Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/entry/SleeveCache.java @ 32:243c74d599bf
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author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:41:47 +0100 |
parents | b7e52953b7a6 |
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0
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1 package org.dancres.blitz.entry; |
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2 |
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3 import java.io.IOException; |
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4 |
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5 import java.util.ArrayList; |
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6 |
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7 import java.util.logging.*; |
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8 |
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9 import net.jini.core.transaction.TransactionException; |
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10 import net.jini.config.ConfigurationException; |
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11 |
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12 import org.dancres.blitz.mangler.MangledEntry; |
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13 |
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14 import org.dancres.blitz.Logging; |
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15 import org.dancres.blitz.stats.StatGenerator; |
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16 import org.dancres.blitz.stats.Stat; |
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17 import org.dancres.blitz.stats.StoreStat; |
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18 import org.dancres.blitz.stats.StatsBoard; |
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19 |
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20 import org.dancres.blitz.oid.OID; |
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21 |
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22 import org.dancres.blitz.arc.ArcCache; |
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23 import org.dancres.blitz.arc.CacheBlockDescriptor; |
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24 import org.dancres.blitz.arc.RecoverySummary; |
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25 |
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26 import org.dancres.blitz.txn.TxnManager; |
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27 |
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28 import org.dancres.blitz.entry.ci.CacheIndexer; |
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29 |
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30 import org.dancres.blitz.config.CacheSize; |
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31 import org.dancres.blitz.config.Fifo; |
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32 import org.dancres.blitz.config.EntryConstraints; |
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33 |
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34 import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicLong; |
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35 import org.dancres.blitz.config.ConfigurationFactory; |
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36 |
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37 /** |
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38 The organization of the space implementation can be viewed as being |
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39 similar to a memory hierarchy with EntryReposImpl/SpaceImpl being where |
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40 central processing happens. SleeveCache can be viewed as level 1 cache |
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41 whilst storage is main memory. Thus all "traffic" goes through SleeveCache |
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42 which interacts appropriately with Storage when it cannot satisfy the |
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43 demand itself. <P> |
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44 |
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45 Is responsible for indexing and caching of unpacked EntrySleeveImpls. |
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46 Implemented using an ArcCache.<P> |
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47 |
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48 @see org.dancres.blitz.arc.ArcCache |
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49 |
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50 @todo One way to split caches down further in the face of concurrency |
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51 demands would be to start maintaining multiple caches scoped or hashed on |
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52 the zone id or even the uid itself. |
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53 */ |
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54 class SleeveCache implements StatGenerator { |
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55 static Logger theLogger = |
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56 Logging.newLogger("org.dancres.blitz.disk.SleeveCache"); |
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57 |
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58 private static int DESIRED_ENTRIES_PER_PARTITION = 0; |
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59 |
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60 static { |
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61 try { |
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62 DESIRED_ENTRIES_PER_PARTITION = |
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63 ((Integer) ConfigurationFactory.getEntry("cacheEntriesPerPartition", int.class, |
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64 new Integer(128))).intValue(); |
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65 |
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66 theLogger.log(Level.SEVERE, "Loaded config: " + |
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67 ((Integer) ConfigurationFactory.getEntry("cacheEntriesPerPartition", int.class, |
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68 new Integer(32))).intValue()); |
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69 |
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70 } catch (ConfigurationException aCE) { |
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71 theLogger.log(Level.SEVERE, "Failed to source partition setup", aCE); |
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72 } |
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73 } |
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74 |
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75 private final ArcCache[] theStoreCaches; |
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76 private final CacheSize theCacheSize; |
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77 private final int theNumPartitions; |
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78 private final int thePartitionsMask; |
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79 |
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80 private Storage theStore; |
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81 private CountersImpl theCounters; |
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82 private EntryConstraints theConstraints; |
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83 private CacheIndexer theIndexer; |
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84 |
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85 private long theId = StatGenerator.UNSET_ID; |
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86 |
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87 private static class OfferTracker { |
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88 private String theType; |
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89 private AtomicLong theMissed = new AtomicLong(); |
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90 private AtomicLong theDeld = new AtomicLong(); |
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91 |
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92 OfferTracker(String aType) { |
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93 theType = aType; |
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94 } |
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95 |
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96 void incMissed() { |
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97 theMissed.incrementAndGet(); |
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98 } |
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99 |
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100 void incDeld() { |
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101 theDeld.incrementAndGet(); |
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102 } |
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103 |
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104 public String getTitle() { |
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105 return theType; |
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106 } |
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107 |
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108 public long getMisses() { |
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109 return theMissed.get(); |
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110 } |
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111 |
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112 public long getDeld() { |
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113 return theDeld.get(); |
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114 } |
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115 } |
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116 |
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117 private static final int CACHED_TRACKER = 0; |
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118 private static final int DIRTY_TRACKER = 1; |
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119 private static final int STORAGE_TRACKER = 2; |
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120 |
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121 private OfferTracker[] theTrackers = new OfferTracker[] { |
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122 new OfferTracker("Cached"), new OfferTracker("Dirty"), |
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123 new OfferTracker("Storage") |
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124 }; |
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125 |
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126 SleeveCache(Storage aStore) throws IOException { |
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127 theStore = aStore; |
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128 |
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129 try { |
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130 theConstraints = |
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131 EntryConstraints.getConstraints(theStore.getType()); |
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132 } catch (ConfigurationException aCE) { |
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133 thePartitionsMask = 0; |
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134 theNumPartitions = 0; |
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135 theStoreCaches = new ArcCache[0]; |
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136 theLogger.log(Level.SEVERE, |
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137 "Couldn't load constraints for type " + |
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138 theStore.getType(), aCE); |
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139 IOException myIOE = |
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140 new IOException("Couldn't load constraints for type " + |
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141 theStore.getType()); |
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142 myIOE.initCause(aCE); |
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143 throw myIOE; |
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144 } |
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145 |
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146 theCacheSize = (CacheSize) theConstraints.get(CacheSize.class); |
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147 |
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148 int myNumPartitions; |
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149 int myEntriesPerCache; |
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150 |
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151 if (DESIRED_ENTRIES_PER_PARTITION == -1) { |
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152 myNumPartitions = 1; |
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153 myEntriesPerCache = theCacheSize.getSize(); |
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154 } else { |
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155 myNumPartitions = (theCacheSize.getSize() / DESIRED_ENTRIES_PER_PARTITION); |
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156 myEntriesPerCache = DESIRED_ENTRIES_PER_PARTITION; |
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157 } |
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158 |
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159 // Find nearest power of 2 > or = |
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160 // |
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161 int myPower; |
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162 for (myPower = 1; myPower < myNumPartitions; myPower = myPower << 1); |
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163 theNumPartitions = myPower; |
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164 |
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165 thePartitionsMask = theNumPartitions - 1; |
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166 |
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167 theLogger.log(Level.INFO, aStore.getType() + " cache size = " |
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168 + theCacheSize.getSize() + " partitions = " + theNumPartitions + |
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169 " mask = " + Integer.toHexString(thePartitionsMask) + " partition size = " + myEntriesPerCache); |
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170 |
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171 theStoreCaches = new ArcCache[theNumPartitions]; |
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172 |
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173 for (int i = 0; i < theNumPartitions; i++) { |
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174 theStoreCaches[i] = new ArcCache(aStore, myEntriesPerCache); |
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175 |
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176 theIndexer = CacheIndexer.getIndexer(theStore.getType()); |
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177 |
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178 theStoreCaches[i].add(new CacheListenerImpl(theIndexer)); |
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179 } |
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180 |
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181 try { |
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182 theCounters = new CountersImpl(theStore.getType(), |
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183 theStore.getNumEntries()); |
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184 } catch (IOException anIOE) { |
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185 theLogger.log(Level.SEVERE, |
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186 "Couldn't read instance count from storage: " + |
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187 theStore.getType() + |
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188 " statistics will be inaccurate", anIOE); |
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189 |
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190 theCounters = new CountersImpl(theStore.getType(), 0); |
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191 } |
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192 |
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193 StatsBoard.get().add(this); |
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194 } |
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195 |
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196 public void setId(long anId) { |
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197 theId = anId; |
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198 } |
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199 |
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200 public long getId() { |
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201 return theId; |
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202 } |
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203 |
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204 public Stat generate() { |
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205 String[] myTitles = new String[theTrackers.length]; |
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206 long[] myMisses = new long[theTrackers.length]; |
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207 long[] myDeld = new long[theTrackers.length]; |
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208 |
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209 for (int i = 0; i < theTrackers.length; i++) { |
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210 myTitles[i] = theTrackers[i].getTitle(); |
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211 myMisses[i] = theTrackers[i].getMisses(); |
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212 myDeld[i] = theTrackers[i].getDeld(); |
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213 } |
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214 |
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215 int myActiveCache = 0; |
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216 |
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217 for (int i = 0; i < theStoreCaches.length; i++) |
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218 myActiveCache += theStoreCaches[i].getActiveSize(); |
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219 |
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220 return new StoreStat(theId, theStore.getType(), myTitles, |
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221 myMisses, myDeld, myActiveCache, theCacheSize.getSize()); |
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222 } |
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223 |
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224 private int getPartition(CacheBlockDescriptor aCBD) { |
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225 OID myOID = (OID) aCBD.getId(); |
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226 |
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227 return getPartition(myOID); |
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228 } |
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229 |
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230 private int getPartition(OID anOID) { |
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231 return anOID.hashCode() & thePartitionsMask; |
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232 } |
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233 |
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234 private int getPartition(EntrySleeveImpl aSleeve) { |
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235 return getPartition(aSleeve.getOID()); |
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236 } |
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237 |
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238 void forceSync(CacheBlockDescriptor aCBD) throws IOException { |
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239 theStoreCaches[getPartition(aCBD)].forceSync(aCBD); |
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240 } |
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241 |
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242 CacheBlockDescriptor load(OID aOID) throws IOException { |
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243 return theStoreCaches[getPartition(aOID)].find(aOID); |
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244 } |
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245 |
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246 CacheBlockDescriptor add(EntrySleeveImpl aSleeve) throws IOException { |
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247 return theStoreCaches[getPartition(aSleeve)].insert(aSleeve); |
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248 } |
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249 |
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250 RecoverySummary recover(EntrySleeveImpl aSleeve) |
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251 throws IOException { |
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252 return theStoreCaches[getPartition(aSleeve)].recover(aSleeve); |
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253 } |
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254 |
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255 boolean renew(OID aOID, long anExpiry) throws IOException { |
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256 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(aOID)].find(aOID); |
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257 |
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258 if (myCBD == null) { |
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259 return false; |
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260 } |
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261 |
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262 EntrySleeveImpl mySleeve = (EntrySleeveImpl) myCBD.getContent(); |
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263 |
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264 if (!mySleeve.hasExpired(System.currentTimeMillis()) && |
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265 !mySleeve.getState().test(SleeveState.DELETED)) { |
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266 |
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267 if (anExpiry == 0) { |
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268 // Don't reset expiry - it's useful to storage to know |
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269 // what the lease was last |
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270 mySleeve.getState().set(SleeveState.DELETED); |
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271 |
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272 // Update stats |
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273 theCounters.didPurge(); |
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274 } else { |
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275 mySleeve.setExpiry(anExpiry); |
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276 } |
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277 |
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278 mySleeve.markDirty(); |
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279 myCBD.release(); |
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280 |
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281 return true; |
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282 } |
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283 |
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284 myCBD.release(); |
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285 |
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286 return false; |
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287 } |
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288 |
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289 boolean cancel(OID aOID) throws IOException { |
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290 return renew(aOID, 0); |
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291 } |
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292 |
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293 void sync() throws IOException { |
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294 for (int i = 0; i < theNumPartitions; i++) { |
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295 theStoreCaches[i].sync(); |
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296 } |
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297 } |
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298 |
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299 Counters getCounters() { |
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300 return theCounters; |
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301 } |
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302 |
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303 void close() { |
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304 // Nothing to do here - we could destroy the counters but we put that |
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305 // in deleteAll which makes more sense as close doesn't mean deletion |
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306 // theStoreCache.dump(); |
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307 } |
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308 |
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309 void write(MangledEntry anEntry, long anExpiry, WriteEscort anEscort) |
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310 throws IOException { |
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311 |
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312 |
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313 OID myID = theStore.getNextId(); |
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314 EntrySleeveImpl mySleeve = null; |
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315 |
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316 if (theLogger.isLoggable(Level.FINE)) |
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317 theLogger.log(Level.FINE, "Written: " + myID + ", " + |
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318 anExpiry + ", " + |
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319 (anExpiry - System.currentTimeMillis())); |
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320 |
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321 mySleeve = new EntrySleeveImpl(myID, anEntry, anExpiry); |
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322 |
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323 // Ready to write but tell the escort first |
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324 OpInfo myInfo = new WriteEntryOpInfo(mySleeve); |
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325 |
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326 if (!anEscort.writing(myInfo)) |
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327 return; |
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328 |
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329 // Now make it visible |
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330 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(mySleeve)].insert(mySleeve); |
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331 myCBD.release(); |
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332 |
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333 if (theLogger.isLoggable(Level.FINE)) |
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334 theLogger.log(Level.FINE, "Unwritten: " + mySleeve.getOID()); |
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335 } |
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336 |
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337 void find(MangledEntry anEntry, SearchVisitor aVisitor) |
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338 throws IOException { |
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339 |
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340 if (theConstraints.get(Fifo.class) != null) |
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341 fifoFind(anEntry, aVisitor); |
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342 else |
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343 fastFind(anEntry, aVisitor); |
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344 } |
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345 |
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346 /** |
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347 <p>If we're in FIFO mode, we know that each TupleLocator is sorted into |
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348 FIFO order. Thus we can merge across all locators on the fly |
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349 and obtain a fully ordered, non-duplicate set of tuple id's for |
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350 matching using a simply algorithm.</p> |
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351 |
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352 <p>By sorting across all locators and applying global FIFO order |
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353 we can maximize use of the cache and avoid excessive disk hits if |
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354 we have sufficient of the FIFO ordering in cache. Thus we get |
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355 graceful degradation rather than consulting disk for the definitive |
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356 ordering regardless.</p> |
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357 */ |
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358 private void fifoFind(MangledEntry anEntry, SearchVisitor aVisitor) |
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359 throws IOException { |
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360 |
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361 long mySearchStart = System.currentTimeMillis(); |
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362 |
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363 ArrayList myLocators = new ArrayList(); |
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364 |
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365 TupleLocator myLocator = theStore.find(anEntry); |
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366 |
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367 if (myLocator != null) |
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368 myLocators.add(myLocator); |
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369 |
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370 myLocator = theStore.findCached(anEntry); |
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371 |
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372 if (myLocator != null) |
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373 myLocators.add(myLocator); |
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374 |
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375 myLocator = theIndexer.find(anEntry); |
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376 |
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377 if (myLocator != null) |
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378 myLocators.add(myLocator); |
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379 |
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380 if (myLocators.size() == 0) |
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381 return; |
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382 |
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383 TupleLocator[] mySortedSources = new TupleLocator[myLocators.size()]; |
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384 |
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385 mySortedSources = (TupleLocator[]) myLocators.toArray(mySortedSources); |
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386 |
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387 myLocator = new SortingLocator(mySortedSources); |
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388 |
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389 offerAndReleaseLocator(myLocator, aVisitor, mySearchStart, |
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390 theTrackers[CACHED_TRACKER]); |
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391 } |
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392 |
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393 private void fastFind(MangledEntry anEntry, SearchVisitor aVisitor) |
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394 throws IOException { |
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395 |
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396 long mySearchStart = System.currentTimeMillis(); |
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397 |
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398 /* |
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399 Basic approach is to send the template to the CacheIndexer and |
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400 ask it to return suitable IDs which we will then pin and try. |
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401 Note we should set a flag which boycotts a load from disk so that |
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402 flushed or deleted entries are not loaded more than once. |
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403 |
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404 If we cannot satisfy the Visitor that way, we repeat the exercise |
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405 with storage which returns OID/byte[] pairs which we can then |
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406 pin. |
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407 |
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408 Storage and CacheIndexer are now free to plan searches as they |
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409 see fit based on template. |
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410 */ |
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411 |
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412 TupleLocator myLocator = theIndexer.find(anEntry); |
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413 |
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414 if (theLogger.isLoggable(Level.FINE)) |
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415 theLogger.log(Level.FINE, "Searching[cache]: " + myLocator); |
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416 |
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417 if (myLocator != null) { |
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418 if (offerAndReleaseLocator(myLocator, aVisitor, mySearchStart, |
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419 theTrackers[CACHED_TRACKER])) { |
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420 /* |
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421 System.err.println("Cache search time: " + |
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422 (System.currentTimeMillis() - |
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423 mySearchStart)); |
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424 */ |
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425 return; |
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426 } |
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427 } |
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428 |
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429 if (theLogger.isLoggable(Level.FINE)) |
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430 theLogger.log(Level.FINE, "Searching[StoreCache]: " + myLocator); |
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431 |
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432 myLocator = theStore.findCached(anEntry); |
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433 |
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434 if (myLocator != null) { |
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435 if (offerAndReleaseLocator(myLocator, aVisitor, mySearchStart, |
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436 theTrackers[DIRTY_TRACKER])) |
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437 return; |
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438 } |
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parents:
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439 |
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440 myLocator = theStore.find(anEntry); |
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441 |
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442 if (myLocator == null) { |
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443 if (theLogger.isLoggable(Level.FINE)) |
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444 theLogger.log(Level.FINE, "Got no matches on disk"); |
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445 return; |
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446 } |
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447 |
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448 offerAndReleaseLocator(myLocator, aVisitor, mySearchStart, |
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449 theTrackers[STORAGE_TRACKER]); |
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450 } |
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451 |
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452 LongtermOffer getOffer(OID anOID) throws IOException { |
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|
453 |
17
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Add support for cache partitioning to improve concurrency.
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454 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(anOID)].find(anOID); |
0
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455 |
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456 if (myCBD != null) { |
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457 return new LongtermOfferImpl(myCBD); |
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458 } else |
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459 return null; |
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parents:
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460 } |
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parents:
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461 |
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462 boolean find(SearchVisitor aVisitor, OID aOID, MangledEntry aPreload) |
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463 throws IOException { |
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parents:
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|
464 |
17
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Add support for cache partitioning to improve concurrency.
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parents:
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465 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(aOID)].find(aOID); |
0
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|
466 |
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467 long myStartTime = System.currentTimeMillis(); |
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468 |
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469 boolean offered = false; |
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parents:
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470 |
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parents:
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471 if (myCBD != null) { |
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472 try { |
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473 EntrySleeveImpl mySleeve = |
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474 (EntrySleeveImpl) myCBD.getContent(); |
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parents:
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|
475 |
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parents:
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|
476 /* |
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parents:
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477 If the JS specification is changed to cope with the issues |
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478 discussed in http://archives.java.sun.com/cgi-bin/wa?A2=ind0311&L=javaspaces-users&F=&S=&P=4599 and http://archives.java.sun.com/cgi-bin/wa?A2=ind0311&L=javaspaces-users&F=&S=&P=3590 then we need to do two things: |
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479 |
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480 (1) Allow the SearchVisitor to see Sleeve's even if they've |
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481 expired. |
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482 (2) Having "shown" it to the SearchVisitor we'd need to |
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483 query the ReapFilters and if they don't boycott, mark the |
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484 item deleted. |
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485 |
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486 These two steps have the effect of allowing a *ifExists to |
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487 conflict on lease-expired entries that have been locked |
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488 by a transaction and ensures we only delete such entries |
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489 when no transactions have posession of them anymore. Of |
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490 course, this is somewhat slower and less efficient as |
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491 there's never a circumstance under which we can be assured |
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492 that a SearchVisitor *never* sees a particular entry again. |
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493 |
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494 If we must implement the strategy of flunking a transaction |
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495 owing to a lock on a lease expired object, this would be |
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496 best dealt with by having TxnOp's check expiries at prepare |
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497 or commit time. However this is much less appealing as what |
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498 is basically a pessimistic transaction API becomes |
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499 optimistic in this case and only in this case. |
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500 |
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501 All this applies to the similar statement in offer() below. |
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502 */ |
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503 if (! mySleeve.getState().test(SleeveState.DELETED)) { |
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504 |
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505 // If it's expired, mark it deleted, subject to filters |
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506 // |
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507 if (mySleeve.hasExpired(myStartTime)) { |
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508 |
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509 if (! EntryRepositoryFactory.getReaper().filter(mySleeve)) { |
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510 mySleeve.getState().set(SleeveState.DELETED); |
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511 mySleeve.markDirty(); |
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512 |
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513 // Update stats |
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514 theCounters.didPurge(); |
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515 } |
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516 } else { |
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517 OpInfo myInfo = |
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518 new FindEntryOpInfo(theStore.getType(), |
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519 mySleeve.getOID(), |
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520 aVisitor.isDeleter()); |
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521 |
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522 SearchOffer myOffer; |
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523 |
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524 if (aPreload != null) { |
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525 myOffer = new SearchOfferImpl(aPreload, myInfo); |
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526 } else { |
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527 theLogger.log(Level.FINE, "NOT using preload"); |
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528 |
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529 myOffer = new SearchOfferImpl(mySleeve.getEntry(), |
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530 myInfo); |
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531 } |
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532 |
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533 aVisitor.offer(myOffer); |
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534 |
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535 offered = true; |
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536 } |
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537 } else { |
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538 theTrackers[CACHED_TRACKER].incDeld(); |
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539 } |
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540 } finally { |
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541 myCBD.release(); |
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542 } |
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543 } else { |
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parents:
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544 theTrackers[CACHED_TRACKER].incMissed(); |
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Dan Creswell <dan.creswell@gmail.com>
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545 } |
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546 |
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547 return offered; |
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|
548 } |
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|
549 |
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550 private boolean offerAndReleaseLocator(TupleLocator aLocator, |
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551 SearchVisitor aVisitor, |
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552 long aStartTime, |
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parents:
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553 OfferTracker aTracker) |
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parents:
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|
554 throws IOException { |
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parents:
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|
555 |
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556 try { |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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557 return offer(aLocator, aVisitor, aStartTime, aTracker); |
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parents:
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558 } finally { |
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parents:
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|
559 aLocator.release(); |
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parents:
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|
560 } |
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parents:
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|
561 } |
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parents:
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|
562 |
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parents:
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|
563 /** |
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parents:
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564 @return <code>true</code> means offering can stop for better or worse. |
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565 <code>false</code> indicates that the search should continue if there |
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parents:
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566 are other sources of offers. |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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|
567 */ |
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568 private boolean offer(TupleLocator aLocator, SearchVisitor aVisitor, |
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parents:
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|
569 long aStartTime, OfferTracker aTracker) |
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570 throws IOException { |
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571 |
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parents:
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572 int myVisitorResponse = SearchVisitor.TRY_AGAIN; |
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573 |
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574 OID myId = null; |
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575 EntrySleeveImpl mySleeve = null; |
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|
576 String myType = theStore.getType(); |
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577 boolean isDeletion = aVisitor.isDeleter(); |
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578 |
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579 // long myStart = System.currentTimeMillis(); |
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|
580 |
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parents:
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|
581 while (aLocator.fetchNext()) { |
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parents:
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|
582 |
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583 myId = aLocator.getOID(); |
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584 |
17
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585 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(myId)].find(myId); |
0
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|
586 |
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|
587 if (myCBD != null) { |
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|
588 mySleeve = (EntrySleeveImpl) myCBD.getContent(); |
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|
589 |
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|
590 if (! mySleeve.getState().test(SleeveState.DELETED)) { |
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parents:
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changeset
|
591 |
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parents:
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changeset
|
592 // If it's expired, mark it deleted, subject to filters |
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parents:
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changeset
|
593 // |
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|
594 if (mySleeve.hasExpired(aStartTime)) { |
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595 if (! EntryRepositoryFactory.getReaper().filter(mySleeve)) { |
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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
|
596 mySleeve.getState().set(SleeveState.DELETED); |
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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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|
597 mySleeve.markDirty(); |
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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
|
598 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
599 // Update stats |
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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
|
600 theCounters.didPurge(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
601 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
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|
602 } else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
603 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
604 OpInfo myInfo = |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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|
605 new FindEntryOpInfo(myType, mySleeve.getOID(), |
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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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|
606 isDeletion); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
607 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
608 SearchOfferImpl myOffer = |
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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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|
609 new SearchOfferImpl(mySleeve.getEntry(), myInfo); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
610 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
611 myVisitorResponse = |
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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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|
612 aVisitor.offer(myOffer); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
613 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
614 } else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
615 aTracker.incDeld();; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
616 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
617 |
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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
|
618 myCBD.release(); |
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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
|
619 |
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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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|
620 if ((myVisitorResponse == SearchVisitor.STOP) || |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
621 (myVisitorResponse == SearchVisitor.ACCEPTED)) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
622 break; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
623 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
624 } else { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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changeset
|
625 aTracker.incMissed(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
626 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
627 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
628 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
629 /* |
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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
|
630 System.out.println("Time to offer: " + |
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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
|
631 (System.currentTimeMillis() - |
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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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|
632 myStart)); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
633 */ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
634 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
635 if (myVisitorResponse != SearchVisitor.TRY_AGAIN) |
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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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|
636 return true; |
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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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|
637 else |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
638 return false; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
639 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
640 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
641 void deleteAll() throws IOException { |
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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
|
642 theCounters.destroy(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
643 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
644 /* |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
645 Basic approach is to send the template to the CacheIndexer and |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
646 ask it to return suitable IDs which we will then pin and try. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
647 Note we should set a flag which boycotts a load from disk so that |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
648 flushed or deleted entries are not loaded more than once. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
649 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
650 If we cannot satisfy the Visitor that way, we repeat the exercise |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
651 with storage which returns OID/byte[] pairs which we can then |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
652 pin. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
653 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
654 Storage and CacheIndexer are now free to plan searches as they |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
655 see fit based on template. |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
656 */ |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
657 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
658 TupleLocator myLocator = theIndexer.find(MangledEntry.NULL_TEMPLATE); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
659 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
660 if (theLogger.isLoggable(Level.FINE)) |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
661 theLogger.log(Level.FINE, "Searching[cache]: " + myLocator); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
662 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
663 if (myLocator != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
664 delete(myLocator); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
665 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
666 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
667 if (theLogger.isLoggable(Level.FINE)) |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
668 theLogger.log(Level.FINE, "Searching[StoreCache]: " + myLocator); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
669 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
670 myLocator = theStore.findCached(MangledEntry.NULL_TEMPLATE); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
671 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
672 if (myLocator != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
673 delete(myLocator); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
674 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
675 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
676 myLocator = theStore.find(MangledEntry.NULL_TEMPLATE); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
677 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
678 if (myLocator == null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
679 if (theLogger.isLoggable(Level.FINE)) |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
680 theLogger.log(Level.FINE, "Got no matches on disk"); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
681 return; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
682 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
683 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
684 delete(myLocator); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
685 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
686 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
687 private void delete(TupleLocator aLocator) throws IOException { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
688 try { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
689 while (aLocator.fetchNext()) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
690 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
691 OID myId = aLocator.getOID(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
692 |
17
46ac1a45718a
Add support for cache partitioning to improve concurrency.
Dan Creswell <dan.creswell@gmail.com>
parents:
0
diff
changeset
|
693 CacheBlockDescriptor myCBD = theStoreCaches[getPartition(myId)].find(myId); |
0
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
694 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
695 OpInfo myInfo = null; |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
696 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
697 if (myCBD != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
698 EntrySleeveImpl mySleeve = |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
699 (EntrySleeveImpl) myCBD.getContent(); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
700 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
701 if (! mySleeve.getState().test(SleeveState.DELETED)) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
702 mySleeve.getState().set(SleeveState.DELETED); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
703 mySleeve.markDirty(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
704 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
705 myInfo = |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
706 new FindEntryOpInfo(theStore.getType(), |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
707 mySleeve.getOID(), |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
diff
changeset
|
708 true); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
709 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
710 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
711 myCBD.release(); |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
712 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
713 if (myInfo != null) { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
714 try { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
715 TxnManager.get().log(new ForcedCommit(myInfo)); |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
diff
changeset
|
716 } catch (TransactionException aTE) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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717 IOException myIOE = new IOException("Eeek failed to delete Entry"); |
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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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718 myIOE.initCause(aTE); |
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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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719 throw myIOE; |
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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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720 } |
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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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721 } |
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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722 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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723 } |
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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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724 } finally { |
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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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725 aLocator.release(); |
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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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726 } |
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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727 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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728 |
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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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729 public String toString() { |
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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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730 return "SC: " + theStore.getType(); |
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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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731 } |
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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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732 } |