Mercurial > hg > blitz_stable
annotate src/EDU/oswego/cs/dl/util/concurrent/FJTaskRunner.java @ 8:fa7203ea1622
Remove some dead code (Dave Brosius)
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 23 May 2009 11:27:41 +0100 |
parents | 3dc0c5604566 |
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1 /* |
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2 File: FJTaskRunner.java |
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3 |
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4 Originally written by Doug Lea and released into the public domain. |
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5 This may be used for any purposes whatsoever without acknowledgment. |
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6 Thanks for the assistance and support of Sun Microsystems Labs, |
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7 and everyone contributing, testing, and using this code. |
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8 |
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9 History: |
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10 Date Who What |
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11 7Jan1999 dl First public release |
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12 13Jan1999 dl correct a stat counter update; |
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13 ensure inactive status on run termination; |
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14 misc minor cleaup |
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15 14Jan1999 dl Use random starting point in scan; |
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16 variable renamings. |
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17 18Jan1999 dl Runloop allowed to die on task exception; |
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18 remove useless timed join |
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19 22Jan1999 dl Rework scan to allow use of priorities. |
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20 6Feb1999 dl Documentation updates. |
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21 7Mar1999 dl Add array-based coInvoke |
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22 31Mar1999 dl Revise scan to remove need for NullTasks |
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23 27Apr1999 dl Renamed |
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24 23oct1999 dl Earlier detect of interrupt in scanWhileIdling |
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25 24nov1999 dl Now works on JVMs that do not properly |
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26 implement read-after-write of 2 volatiles. |
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27 */ |
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28 |
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29 package EDU.oswego.cs.dl.util.concurrent; |
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30 |
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31 import java.util.Random; |
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32 |
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33 /** |
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34 * Specialized Thread subclass for running FJTasks. |
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35 * <p> |
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36 * Each FJTaskRunner keeps FJTasks in a double-ended queue (DEQ). |
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37 * Double-ended queues support stack-based operations |
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38 * push and pop, as well as queue-based operations put and take. |
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39 * Normally, threads run their own tasks. But they |
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40 * may also steal tasks from each others DEQs. |
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41 * <p> |
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42 * The algorithms are minor variants of those used |
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43 * in <A href="http://supertech.lcs.mit.edu/cilk/"> Cilk</A> and |
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44 * <A href="http://www.cs.utexas.edu/users/hood/"> Hood</A>, and |
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45 * to a lesser extent |
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46 * <A href="http://www.cs.uga.edu/~dkl/filaments/dist.html"> Filaments</A>, |
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47 * but are adapted to work in Java. |
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48 * <p> |
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49 * The two most important capabilities are: |
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50 * <ul> |
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51 * <li> Fork a FJTask: |
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52 * <pre> |
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53 * Push task onto DEQ |
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54 * </pre> |
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55 * <li> Get a task to run (for example within taskYield) |
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56 * <pre> |
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57 * If DEQ is not empty, |
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58 * Pop a task and run it. |
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59 * Else if any other DEQ is not empty, |
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60 * Take ("steal") a task from it and run it. |
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61 * Else if the entry queue for our group is not empty, |
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62 * Take a task from it and run it. |
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63 * Else if current thread is otherwise idling |
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64 * If all threads are idling |
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65 * Wait for a task to be put on group entry queue |
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66 * Else |
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67 * Yield or Sleep for a while, and then retry |
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68 * </pre> |
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69 * </ul> |
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70 * The push, pop, and put are designed to only ever called by the |
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71 * current thread, and take (steal) is only ever called by |
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72 * other threads. |
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73 * All other operations are composites and variants of these, |
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74 * plus a few miscellaneous bookkeeping methods. |
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75 * <p> |
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76 * Implementations of the underlying representations and operations |
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77 * are geared for use on JVMs operating on multiple CPUs (although |
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78 * they should of course work fine on single CPUs as well). |
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79 * <p> |
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80 * A possible snapshot of a FJTaskRunner's DEQ is: |
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81 * <pre> |
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82 * 0 1 2 3 4 5 6 ... |
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83 * +-----+-----+-----+-----+-----+-----+-----+-- |
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84 * | | t | t | t | t | | | ... deq array |
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85 * +-----+-----+-----+-----+-----+-----+-----+-- |
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86 * ^ ^ |
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87 * base top |
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88 * (incremented (incremented |
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89 * on take, on push |
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90 * decremented decremented |
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91 * on put) on pop) |
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92 * </pre> |
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93 * <p> |
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94 * FJTasks are held in elements of the DEQ. |
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95 * They are maintained in a bounded array that |
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96 * works similarly to a circular bounded buffer. To ensure |
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97 * visibility of stolen FJTasks across threads, the array elements |
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98 * must be <code>volatile</code>. |
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99 * Using volatile rather than synchronizing suffices here since |
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100 * each task accessed by a thread is either one that it |
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101 * created or one that has never seen before. Thus we cannot |
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102 * encounter any staleness problems executing run methods, |
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103 * although FJTask programmers must be still sure to either synch or use |
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104 * volatile for shared data within their run methods. |
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105 * <p> |
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106 * However, since there is no way |
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107 * to declare an array of volatiles in Java, the DEQ elements actually |
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108 * hold VolatileTaskRef objects, each of which in turn holds a |
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109 * volatile reference to a FJTask. |
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110 * Even with the double-indirection overhead of |
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111 * volatile refs, using an array for the DEQ works out |
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112 * better than linking them since fewer shared |
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113 * memory locations need to be |
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114 * touched or modified by the threads while using the DEQ. |
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115 * Further, the double indirection may alleviate cache-line |
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116 * sharing effects (which cannot otherwise be directly dealt with in Java). |
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117 * <p> |
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118 * The indices for the <code>base</code> and <code>top</code> of the DEQ |
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119 * are declared as volatile. The main contention point with |
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120 * multiple FJTaskRunner threads occurs when one thread is trying |
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121 * to pop its own stack while another is trying to steal from it. |
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122 * This is handled via a specialization of Dekker's algorithm, |
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123 * in which the popping thread pre-decrements <code>top</code>, |
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124 * and then checks it against <code>base</code>. |
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125 * To be conservative in the face of JVMs that only partially |
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126 * honor the specification for volatile, the pop proceeds |
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127 * without synchronization only if there are apparently enough |
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128 * items for both a simultaneous pop and take to succeed. |
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129 * It otherwise enters a |
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130 * synchronized lock to check if the DEQ is actually empty, |
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131 * if so failing. The stealing thread |
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132 * does almost the opposite, but is set up to be less likely |
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133 * to win in cases of contention: Steals always run under synchronized |
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134 * locks in order to avoid conflicts with other ongoing steals. |
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135 * They pre-increment <code>base</code>, and then check against |
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136 * <code>top</code>. They back out (resetting the base index |
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137 * and failing to steal) if the |
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138 * DEQ is empty or is about to become empty by an ongoing pop. |
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139 * <p> |
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140 * A push operation can normally run concurrently with a steal. |
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141 * A push enters a synch lock only if the DEQ appears full so must |
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142 * either be resized or have indices adjusted due to wrap-around |
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143 * of the bounded DEQ. The put operation always requires synchronization. |
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144 * <p> |
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145 * When a FJTaskRunner thread has no tasks of its own to run, |
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146 * it tries to be a good citizen. |
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147 * Threads run at lower priority while scanning for work. |
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148 * <p> |
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149 * If the task is currently waiting |
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150 * via yield, the thread alternates scans (starting at a randomly |
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151 * chosen victim) with Thread.yields. This is |
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152 * well-behaved so long as the JVM handles Thread.yield in a |
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153 * sensible fashion. (It need not. Thread.yield is so underspecified |
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154 * that it is legal for a JVM to treat it as a no-op.) This also |
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155 * keeps things well-behaved even if we are running on a uniprocessor |
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156 * JVM using a simple cooperative threading model. |
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157 * <p> |
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158 * If a thread needing work is |
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159 * is otherwise idle (which occurs only in the main runloop), and |
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160 * there are no available tasks to steal or poll, it |
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161 * instead enters into a sleep-based (actually timed wait(msec)) |
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162 * phase in which it progressively sleeps for longer durations |
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163 * (up to a maximum of FJTaskRunnerGroup.MAX_SLEEP_TIME, |
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164 * currently 100ms) between scans. |
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165 * If all threads in the group |
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166 * are idling, they further progress to a hard wait phase, suspending |
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167 * until a new task is entered into the FJTaskRunnerGroup entry queue. |
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168 * A sleeping FJTaskRunner thread may be awakened by a new |
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169 * task being put into the group entry queue or by another FJTaskRunner |
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170 * becoming active, but not merely by some DEQ becoming non-empty. |
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171 * Thus the MAX_SLEEP_TIME provides a bound for sleep durations |
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172 * in cases where all but one worker thread start sleeping |
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173 * even though there will eventually be work produced |
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174 * by a thread that is taking a long time to place tasks in DEQ. |
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175 * These sleep mechanics are handled in the FJTaskRunnerGroup class. |
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176 * <p> |
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177 * Composite operations such as taskJoin include heavy |
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178 * manual inlining of the most time-critical operations |
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179 * (mainly FJTask.invoke). |
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180 * This opens up a few opportunities for further hand-optimizations. |
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181 * Until Java compilers get a lot smarter, these tweaks |
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182 * improve performance significantly enough for task-intensive |
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183 * programs to be worth the poorer maintainability and code duplication. |
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184 * <p> |
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185 * Because they are so fragile and performance-sensitive, nearly |
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186 * all methods are declared as final. However, nearly all fields |
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187 * and methods are also declared as protected, so it is possible, |
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188 * with much care, to extend functionality in subclasses. (Normally |
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189 * you would also need to subclass FJTaskRunnerGroup.) |
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190 * <p> |
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191 * None of the normal java.lang.Thread class methods should ever be called |
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192 * on FJTaskRunners. For this reason, it might have been nicer to |
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193 * declare FJTaskRunner as a Runnable to run within a Thread. However, |
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194 * this would have complicated many minor logistics. And since |
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195 * no FJTaskRunner methods should normally be called from outside the |
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196 * FJTask and FJTaskRunnerGroup classes either, this decision doesn't impact |
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197 * usage. |
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198 * <p> |
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199 * You might think that layering this kind of framework on top of |
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200 * Java threads, which are already several levels removed from raw CPU |
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201 * scheduling on most systems, would lead to very poor performance. |
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202 * But on the platforms |
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203 * tested, the performance is quite good. |
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204 * <p>[<a href="http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html"> Introduction to this package. </a>] |
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205 * @see FJTask |
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206 * @see FJTaskRunnerGroup |
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207 **/ |
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208 |
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209 public class FJTaskRunner extends Thread { |
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210 |
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211 /** The group of which this FJTaskRunner is a member **/ |
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212 protected final FJTaskRunnerGroup group; |
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213 |
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214 /** |
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215 * Constructor called only during FJTaskRunnerGroup initialization |
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216 **/ |
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217 |
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218 protected FJTaskRunner(FJTaskRunnerGroup g) { |
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219 group = g; |
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220 victimRNG = new Random(System.identityHashCode(this)); |
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221 runPriority = getPriority(); |
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222 setDaemon(true); |
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223 } |
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224 |
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225 /** |
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226 * Return the FJTaskRunnerGroup of which this thread is a member |
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227 **/ |
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228 |
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229 protected final FJTaskRunnerGroup getGroup() { return group; } |
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230 |
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231 |
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232 /* ------------ DEQ Representation ------------------- */ |
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233 |
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234 |
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235 /** |
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236 * FJTasks are held in an array-based DEQ with INITIAL_CAPACITY |
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237 * elements. The DEQ is grown if necessary, but default value is |
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238 * normally much more than sufficient unless there are |
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239 * user programming errors or questionable operations generating |
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240 * large numbers of Tasks without running them. |
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241 * Capacities must be a power of two. |
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242 **/ |
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243 |
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244 protected static final int INITIAL_CAPACITY = 4096; |
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245 |
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246 /** |
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247 * The maximum supported DEQ capacity. |
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248 * When exceeded, FJTaskRunner operations throw Errors |
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249 **/ |
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250 |
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251 protected static final int MAX_CAPACITY = 1 << 30; |
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252 |
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253 /** |
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254 * An object holding a single volatile reference to a FJTask. |
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255 **/ |
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256 |
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257 protected final static class VolatileTaskRef { |
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258 /** The reference **/ |
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259 protected volatile FJTask ref; |
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260 |
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261 /** Set the reference **/ |
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262 protected final void put(FJTask r) { ref = r; } |
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263 /** Return the reference **/ |
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264 protected final FJTask get() { return ref; } |
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265 /** Return the reference and clear it **/ |
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266 protected final FJTask take() { FJTask r = ref; ref = null; return r; } |
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267 |
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268 /** |
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269 * Initialization utility for constructing arrays. |
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270 * Make an array of given capacity and fill it with |
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271 * VolatileTaskRefs. |
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272 **/ |
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273 protected static VolatileTaskRef[] newArray(int cap) { |
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274 VolatileTaskRef[] a = new VolatileTaskRef[cap]; |
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275 for (int k = 0; k < cap; k++) a[k] = new VolatileTaskRef(); |
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276 return a; |
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277 } |
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278 |
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279 } |
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280 |
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281 /** |
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282 * The DEQ array. |
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283 **/ |
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284 |
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285 protected VolatileTaskRef[] deq = VolatileTaskRef.newArray(INITIAL_CAPACITY); |
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286 |
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287 /** Current size of the task DEQ **/ |
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288 protected int deqSize() { return deq.length; } |
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289 |
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290 /** |
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291 * Current top of DEQ. Generally acts just like a stack pointer in an |
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292 * array-based stack, except that it circularly wraps around the |
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293 * array, as in an array-based queue. The value is NOT |
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294 * always kept within <code>0 ... deq.length</code> though. |
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295 * The current top element is always at <code>top & (deq.length-1)</code>. |
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296 * To avoid integer overflow, top is reset down |
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297 * within bounds whenever it is noticed to be out out bounds; |
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298 * at worst when it is at <code>2 * deq.length</code>. |
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299 **/ |
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300 protected volatile int top = 0; |
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301 |
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302 |
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303 /** |
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304 * Current base of DEQ. Acts like a take-pointer in an |
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305 * array-based bounded queue. Same bounds and usage as top. |
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306 **/ |
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307 |
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308 protected volatile int base = 0; |
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309 |
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310 |
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311 /** |
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312 * An extra object to synchronize on in order to |
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313 * achieve a memory barrier. |
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314 **/ |
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315 |
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316 protected final Object barrier = new Object(); |
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317 |
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318 /* ------------ Other BookKeeping ------------------- */ |
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319 |
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320 /** |
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321 * Record whether current thread may be processing a task |
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322 * (i.e., has been started and is not in an idle wait). |
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323 * Accessed, under synch, ONLY by FJTaskRunnerGroup, but the field is |
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324 * stored here for simplicity. |
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325 **/ |
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326 |
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327 protected boolean active = false; |
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328 |
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329 /** Random starting point generator for scan() **/ |
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330 protected final Random victimRNG; |
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331 |
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332 |
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333 /** Priority to use while scanning for work **/ |
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334 protected int scanPriority = FJTaskRunnerGroup.DEFAULT_SCAN_PRIORITY; |
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335 |
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336 /** Priority to use while running tasks **/ |
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337 protected int runPriority; |
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338 |
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339 /** |
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340 * Set the priority to use while scanning. |
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341 * We do not bother synchronizing access, since |
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342 * by the time the value is needed, both this FJTaskRunner |
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343 * and its FJTaskRunnerGroup will |
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344 * necessarily have performed enough synchronization |
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345 * to avoid staleness problems of any consequence. |
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346 **/ |
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347 protected void setScanPriority(int pri) { scanPriority = pri; } |
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348 |
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349 |
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350 /** |
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351 * Set the priority to use while running tasks. |
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352 * Same usage and rationale as setScanPriority. |
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353 **/ |
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354 protected void setRunPriority(int pri) { runPriority = pri; } |
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355 |
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356 /** |
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357 * Compile-time constant for statistics gathering. |
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358 * Even when set, reported values may not be accurate |
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359 * since all are read and written without synchronization. |
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360 **/ |
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361 |
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362 |
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363 |
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364 static final boolean COLLECT_STATS = true; |
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365 // static final boolean COLLECT_STATS = false; |
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366 |
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367 |
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368 // for stat collection |
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369 |
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370 /** Total number of tasks run **/ |
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371 protected int runs = 0; |
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372 |
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373 /** Total number of queues scanned for work **/ |
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374 protected int scans = 0; |
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375 |
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376 /** Total number of tasks obtained via scan **/ |
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377 protected int steals = 0; |
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378 |
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379 |
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380 |
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381 |
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382 /* ------------ DEQ operations ------------------- */ |
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383 |
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384 |
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385 /** |
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386 * Push a task onto DEQ. |
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387 * Called ONLY by current thread. |
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388 **/ |
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389 |
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390 protected final void push(final FJTask r) { |
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391 int t = top; |
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392 |
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393 /* |
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394 This test catches both overflows and index wraps. It doesn't |
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395 really matter if base value is in the midst of changing in take. |
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396 As long as deq length is < 2^30, we are guaranteed to catch wrap in |
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397 time since base can only be incremented at most length times |
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398 between pushes (or puts). |
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399 */ |
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400 |
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401 if (t < (base & (deq.length-1)) + deq.length) { |
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402 |
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403 deq[t & (deq.length-1)].put(r); |
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404 top = t + 1; |
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405 } |
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406 |
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407 else // isolate slow case to increase chances push is inlined |
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408 slowPush(r); // check overflow and retry |
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409 } |
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410 |
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411 |
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412 /** |
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413 * Handle slow case for push |
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414 **/ |
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415 |
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416 protected synchronized void slowPush(final FJTask r) { |
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417 checkOverflow(); |
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418 push(r); // just recurse -- this one is sure to succeed. |
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419 } |
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420 |
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421 |
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422 /** |
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423 * Enqueue task at base of DEQ. |
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424 * Called ONLY by current thread. |
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425 * This method is currently not called from class FJTask. It could be used |
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426 * as a faster way to do FJTask.start, but most users would |
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427 * find the semantics too confusing and unpredictable. |
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428 **/ |
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429 |
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430 protected final synchronized void put(final FJTask r) { |
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431 for (;;) { |
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432 int b = base - 1; |
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433 if (top < b + deq.length) { |
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434 |
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435 int newBase = b & (deq.length-1); |
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436 deq[newBase].put(r); |
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437 base = newBase; |
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438 |
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439 if (b != newBase) { // Adjust for index underflow |
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440 int newTop = top & (deq.length-1); |
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441 if (newTop < newBase) newTop += deq.length; |
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442 top = newTop; |
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443 } |
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444 return; |
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445 } |
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446 else { |
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447 checkOverflow(); |
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448 // ... and retry |
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449 } |
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450 } |
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451 } |
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452 |
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453 /** |
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454 * Return a popped task, or null if DEQ is empty. |
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455 * Called ONLY by current thread. |
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456 * <p> |
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457 * This is not usually called directly but is |
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458 * instead inlined in callers. This version differs from the |
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459 * cilk algorithm in that pop does not fully back down and |
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460 * retry in the case of potential conflict with take. It simply |
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461 * rechecks under synch lock. This gives a preference |
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462 * for threads to run their own tasks, which seems to |
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463 * reduce flailing a bit when there are few tasks to run. |
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464 **/ |
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465 |
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466 protected final FJTask pop() { |
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467 /* |
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468 Decrement top, to force a contending take to back down. |
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469 */ |
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470 |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
471 int t = --top; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
472 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
473 /* |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
474 To avoid problems with JVMs that do not properly implement |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
475 read-after-write of a pair of volatiles, we conservatively |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
476 grab without lock only if the DEQ appears to have at least two |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
477 elements, thus guaranteeing that both a pop and take will succeed, |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
478 even if the pre-increment in take is not seen by current thread. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
479 Otherwise we recheck under synch. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
480 */ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
481 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
482 if (base + 1 < t) |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
483 return deq[t & (deq.length-1)].take(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
484 else |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
485 return confirmPop(t); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
486 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
487 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
488 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
489 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
490 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
491 * Check under synch lock if DEQ is really empty when doing pop. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
492 * Return task if not empty, else null. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
493 **/ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
494 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
495 protected final synchronized FJTask confirmPop(int provisionalTop) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
496 if (base <= provisionalTop) |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
497 return deq[provisionalTop & (deq.length-1)].take(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
498 else { // was empty |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
499 /* |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
500 Reset DEQ indices to zero whenever it is empty. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
501 This both avoids unnecessary calls to checkOverflow |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
502 in push, and helps keep the DEQ from accumulating garbage |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
503 */ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
504 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
505 top = base = 0; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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|
506 return null; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
507 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
508 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
509 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
510 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
511 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
512 * Take a task from the base of the DEQ. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
513 * Always called by other threads via scan() |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
514 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
515 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
516 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
517 protected final synchronized FJTask take() { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
518 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
519 /* |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
520 Increment base in order to suppress a contending pop |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
521 */ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
522 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
523 int b = base++; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
524 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
525 if (b < top) |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
526 return confirmTake(b); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
527 else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
528 // back out |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
529 base = b; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
530 return null; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
531 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
532 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
533 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
534 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
535 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
536 * double-check a potential take |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
537 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
538 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
539 protected FJTask confirmTake(int oldBase) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
540 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
541 /* |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
542 Use a second (guaranteed uncontended) synch |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
543 to serve as a barrier in case JVM does not |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
544 properly process read-after-write of 2 volatiles |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
545 */ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
546 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
547 synchronized(barrier) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
548 if (oldBase < top) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
549 /* |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
550 We cannot call deq[oldBase].take here because of possible races when |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
551 nulling out versus concurrent push operations. Resulting |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
552 accumulated garbage is swept out periodically in |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
553 checkOverflow, or more typically, just by keeping indices |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
554 zero-based when found to be empty in pop, which keeps active |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
555 region small and constantly overwritten. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
556 */ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
557 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
558 return deq[oldBase & (deq.length-1)].get(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
559 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
560 else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
561 base = oldBase; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
562 return null; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
563 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
564 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
565 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
566 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
567 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
568 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
569 * Adjust top and base, and grow DEQ if necessary. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
570 * Called only while DEQ synch lock being held. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
571 * We don't expect this to be called very often. In most |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
572 * programs using FJTasks, it is never called. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
573 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
574 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
575 protected void checkOverflow() { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
576 int t = top; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
577 int b = base; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
578 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
579 if (t - b < deq.length-1) { // check if just need an index reset |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
580 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
581 int newBase = b & (deq.length-1); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
582 int newTop = top & (deq.length-1); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
583 if (newTop < newBase) newTop += deq.length; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
584 top = newTop; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
585 base = newBase; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
586 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
587 /* |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
588 Null out refs to stolen tasks. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
589 This is the only time we can safely do it. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
590 */ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
591 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
592 int i = newBase; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
593 while (i != newTop && deq[i].ref != null) { |
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594 deq[i].ref = null; |
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595 i = (i - 1) & (deq.length-1); |
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parents:
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596 } |
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parents:
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597 |
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|
598 } |
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parents:
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|
599 else { // grow by doubling array |
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|
600 |
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601 int newTop = t - b; |
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602 int oldcap = deq.length; |
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603 int newcap = oldcap * 2; |
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|
604 |
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parents:
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605 if (newcap >= MAX_CAPACITY) |
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606 throw new Error("FJTask queue maximum capacity exceeded"); |
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parents:
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|
607 |
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parents:
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608 VolatileTaskRef[] newdeq = new VolatileTaskRef[newcap]; |
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parents:
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|
609 |
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parents:
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610 // copy in bottom half of new deq with refs from old deq |
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parents:
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611 for (int j = 0; j < oldcap; ++j) newdeq[j] = deq[b++ & (oldcap-1)]; |
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parents:
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|
612 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
613 // fill top half of new deq with new refs |
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parents:
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|
614 for (int j = oldcap; j < newcap; ++j) newdeq[j] = new VolatileTaskRef(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
615 |
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parents:
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616 deq = newdeq; |
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617 base = 0; |
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parents:
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618 top = newTop; |
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parents:
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619 } |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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|
620 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
621 |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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|
622 |
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parents:
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|
623 /* ------------ Scheduling ------------------- */ |
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parents:
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|
624 |
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parents:
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625 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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626 /** |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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627 * Do all but the pop() part of yield or join, by |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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628 * traversing all DEQs in our group looking for a task to |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
629 * steal. If none, it checks the entry queue. |
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parents:
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|
630 * <p> |
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631 * Since there are no good, portable alternatives, |
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parents:
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632 * we rely here on a mixture of Thread.yield and priorities |
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parents:
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633 * to reduce wasted spinning, even though these are |
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parents:
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634 * not well defined. We are hoping here that the JVM |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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635 * does something sensible. |
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parents:
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636 * @param waitingFor if non-null, the current task being joined |
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parents:
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637 **/ |
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parents:
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|
638 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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639 protected void scan(final FJTask waitingFor) { |
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parents:
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|
640 |
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parents:
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641 FJTask task = null; |
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parents:
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|
642 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
643 // to delay lowering priority until first failure to steal |
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parents:
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644 boolean lowered = false; |
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parents:
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645 |
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parents:
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|
646 /* |
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parents:
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647 Circularly traverse from a random start index. |
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parents:
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|
648 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
649 This differs slightly from cilk version that uses a random index |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
650 for each attempted steal. |
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parents:
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|
651 Exhaustive scanning might impede analytic tractablity of |
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parents:
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652 the scheduling policy, but makes it much easier to deal with |
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parents:
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653 startup and shutdown. |
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parents:
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654 */ |
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parents:
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|
655 |
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parents:
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|
656 FJTaskRunner[] ts = group.getArray(); |
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657 int idx = victimRNG.nextInt(ts.length); |
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parents:
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|
658 |
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parents:
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|
659 for (int i = 0; i < ts.length; ++i) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
660 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
661 FJTaskRunner t = ts[idx]; |
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parents:
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662 if (++idx >= ts.length) idx = 0; // circularly traverse |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
663 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
664 if (t != null && t != this) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
665 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
666 if (waitingFor != null && waitingFor.isDone()) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
667 break; |
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parents:
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|
668 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
669 else { |
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parents:
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|
670 if (COLLECT_STATS) ++scans; |
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671 task = t.take(); |
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parents:
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|
672 if (task != null) { |
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parents:
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|
673 if (COLLECT_STATS) ++steals; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
674 break; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
675 } |
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parents:
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|
676 else if (isInterrupted()) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
677 break; |
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parents:
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changeset
|
678 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
679 else if (!lowered) { // if this is first fail, lower priority |
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parents:
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|
680 lowered = true; |
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681 setPriority(scanPriority); |
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parents:
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|
682 } |
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parents:
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|
683 else { // otherwise we are at low priority; just yield |
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684 yield(); |
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parents:
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|
685 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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|
686 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
687 } |
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parents:
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changeset
|
688 |
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parents:
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changeset
|
689 } |
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parents:
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changeset
|
690 |
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parents:
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changeset
|
691 if (task == null) { |
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parents:
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changeset
|
692 if (COLLECT_STATS) ++scans; |
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|
693 task = group.pollEntryQueue(); |
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parents:
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changeset
|
694 if (COLLECT_STATS) if (task != null) ++steals; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
695 } |
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parents:
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changeset
|
696 |
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parents:
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changeset
|
697 if (lowered) setPriority(runPriority); |
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parents:
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changeset
|
698 |
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parents:
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changeset
|
699 if (task != null && !task.isDone()) { |
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parents:
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changeset
|
700 if (COLLECT_STATS) ++runs; |
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changeset
|
701 task.run(); |
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|
702 task.setDone(); |
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parents:
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|
703 } |
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parents:
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changeset
|
704 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
705 } |
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parents:
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changeset
|
706 |
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parents:
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changeset
|
707 /** |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
708 * Same as scan, but called when current thread is idling. |
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parents:
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changeset
|
709 * It repeatedly scans other threads for tasks, |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
710 * sleeping while none are available. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
711 * <p> |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
712 * This differs from scan mainly in that |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
713 * since there is no reason to return to recheck any |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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changeset
|
714 * condition, we iterate until a task is found, backing |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
715 * off via sleeps if necessary. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
716 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
717 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
718 protected void scanWhileIdling() { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
719 FJTask task = null; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
720 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
721 boolean lowered = false; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
722 long iters = 0; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
723 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
724 FJTaskRunner[] ts = group.getArray(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
725 int idx = victimRNG.nextInt(ts.length); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
726 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
727 do { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
728 for (int i = 0; i < ts.length; ++i) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
729 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
730 FJTaskRunner t = ts[idx]; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
731 if (++idx >= ts.length) idx = 0; // circularly traverse |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
732 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
733 if (t != null && t != this) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
734 if (COLLECT_STATS) ++scans; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
735 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
736 task = t.take(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
737 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
738 if (COLLECT_STATS) ++steals; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
739 if (lowered) setPriority(runPriority); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
740 group.setActive(this); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
741 break; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
742 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
743 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
744 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
745 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
746 if (task == null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
747 if (isInterrupted()) |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
748 return; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
749 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
750 if (COLLECT_STATS) ++scans; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
751 task = group.pollEntryQueue(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
752 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
753 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
754 if (COLLECT_STATS) ++steals; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
755 if (lowered) setPriority(runPriority); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
756 group.setActive(this); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
757 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
758 else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
759 ++iters; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
760 // Check here for yield vs sleep to avoid entering group synch lock |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
761 if (iters >= group.SCANS_PER_SLEEP) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
762 group.checkActive(this, iters); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
763 if (isInterrupted()) |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
764 return; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
765 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
766 else if (!lowered) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
767 lowered = true; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
768 setPriority(scanPriority); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
769 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
770 else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
771 yield(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
772 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
773 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
774 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
775 } while (task == null); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
776 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
777 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
778 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
779 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
780 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
781 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
782 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
783 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
784 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
785 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
786 /* ------------ composite operations ------------------- */ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
787 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
788 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
789 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
790 * Main runloop |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
791 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
792 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
793 public void run() { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
794 try{ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
795 while (!interrupted()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
796 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
797 FJTask task = pop(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
798 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
799 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
800 // inline FJTask.invoke |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
801 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
802 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
803 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
804 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
805 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
806 else |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
807 scanWhileIdling(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
808 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
809 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
810 finally { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
811 group.setInactive(this); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
812 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
813 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
814 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
815 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
816 * Execute a task in this thread. Generally called when current task |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
817 * cannot otherwise continue. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
818 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
819 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
820 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
821 protected final void taskYield() { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
822 FJTask task = pop(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
823 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
824 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
825 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
826 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
827 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
828 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
829 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
830 else |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
831 scan(null); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
832 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
833 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
834 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
835 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
836 * Process tasks until w is done. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
837 * Equivalent to <code>while(!w.isDone()) taskYield(); </code> |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
838 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
839 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
840 protected final void taskJoin(final FJTask w) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
841 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
842 while (!w.isDone()) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
843 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
844 FJTask task = pop(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
845 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
846 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
847 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
848 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
849 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
850 if (task == w) return; // fast exit if we just ran w |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
851 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
852 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
853 else |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
854 scan(w); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
855 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
856 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
857 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
858 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
859 * A specialized expansion of |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
860 * <code> w.fork(); invoke(v); w.join(); </code> |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
861 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
862 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
863 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
864 protected final void coInvoke(final FJTask w, final FJTask v) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
865 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
866 // inline push |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
867 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
868 int t = top; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
869 if (t < (base & (deq.length-1)) + deq.length) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
870 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
871 deq[t & (deq.length-1)].put(w); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
872 top = t + 1; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
873 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
874 // inline invoke |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
875 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
876 if (!v.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
877 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
878 v.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
879 v.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
880 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
881 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
882 // inline taskJoin |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
883 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
884 while (!w.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
885 FJTask task = pop(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
886 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
887 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
888 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
889 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
890 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
891 if (task == w) return; // fast exit if we just ran w |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
892 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
893 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
894 else |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
895 scan(w); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
896 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
897 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
898 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
899 else // handle non-inlinable cases |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
900 slowCoInvoke(w, v); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
901 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
902 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
903 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
904 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
905 * Backup to handle noninlinable cases of coInvoke |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
906 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
907 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
908 protected void slowCoInvoke(final FJTask w, final FJTask v) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
909 push(w); // let push deal with overflow |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
910 FJTask.invoke(v); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
911 taskJoin(w); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
912 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
913 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
914 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
915 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
916 * Array-based version of coInvoke |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
917 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
918 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
919 protected final void coInvoke(FJTask[] tasks) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
920 int nforks = tasks.length - 1; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
921 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
922 // inline bulk push of all but one task |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
923 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
924 int t = top; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
925 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
926 if (nforks >= 0 && t + nforks < (base & (deq.length-1)) + deq.length) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
927 for (int i = 0; i < nforks; ++i) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
928 deq[t++ & (deq.length-1)].put(tasks[i]); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
929 top = t; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
930 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
931 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
932 // inline invoke of one task |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
933 FJTask v = tasks[nforks]; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
934 if (!v.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
935 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
936 v.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
937 v.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
938 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
939 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
940 // inline taskJoins |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
941 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
942 for (int i = 0; i < nforks; ++i) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
943 FJTask w = tasks[i]; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
944 while (!w.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
945 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
946 FJTask task = pop(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
947 if (task != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
948 if (!task.isDone()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
949 if (COLLECT_STATS) ++runs; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
950 task.run(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
951 task.setDone(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
952 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
953 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
954 else |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
955 scan(w); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
956 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
957 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
958 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
959 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
960 else // handle non-inlinable cases |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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961 slowCoInvoke(tasks); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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962 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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963 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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964 /** |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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965 * Backup to handle atypical or noninlinable cases of coInvoke |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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966 **/ |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
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967 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
968 protected void slowCoInvoke(FJTask[] tasks) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
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969 for (int i = 0; i < tasks.length; ++i) push(tasks[i]); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
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970 for (int i = 0; i < tasks.length; ++i) taskJoin(tasks[i]); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
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971 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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972 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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973 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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974 |