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more synchronization against outOfMemoryError in wordIndex

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git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2381 6c8d7289-2bf4-0310-a012-ef5d649a1542
This commit is contained in:
orbiter 2006-08-11 16:27:56 +00:00
parent 95160d7f2c
commit acdf24877f
1 changed files with 54 additions and 46 deletions
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100
source/de/anomic/plasma/plasmaWordIndex.java
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@ -170,72 +170,78 @@ public final class plasmaWordIndex extends indexAbstractRI implements indexRI {
public void flushControl() {
// check for forced flush
synchronized (this) { ramCache.shiftK2W(); }
flushCache(ramCache.maxURLinWCache() - ramCache.wCacheReferenceLimit);
if (ramCache.wSize() > ramCache.getMaxWordCount()) {
flushCache(ramCache.wSize() + 500 - ramCache.getMaxWordCount());
synchronized (ramCache) {
ramCache.shiftK2W();
flushCache(ramCache.maxURLinWCache() - ramCache.wCacheReferenceLimit);
if (ramCache.wSize() > ramCache.getMaxWordCount()) {
flushCache(ramCache.wSize() + 500 - ramCache.getMaxWordCount());
}
}
}
public indexContainer addEntry(String wordHash, indexEntry entry, long updateTime, boolean dhtCase) {
indexContainer c;
if ((c = ramCache.addEntry(wordHash, entry, updateTime, dhtCase)) == null) {
if (!dhtCase) flushControl();
return null;
synchronized (ramCache) {
if ((c = ramCache.addEntry(wordHash, entry, updateTime, dhtCase)) == null) {
if (!dhtCase) flushControl();
return null;
}
}
return c;
}
public indexContainer addEntries(indexContainer entries, long updateTime, boolean dhtCase) {
indexContainer added = ramCache.addEntries(entries, updateTime, dhtCase);
// force flush
if (!dhtCase) flushControl();
return added;
synchronized (ramCache) {
indexContainer added = ramCache.addEntries(entries, updateTime, dhtCase);
// force flush
if (!dhtCase) flushControl();
return added;
}
}
public void flushCacheSome() {
System.out.println("DEBUG-A"); // some temporary debug lines to identify the outOfMemoryError position
synchronized (this) { ramCache.shiftK2W(); }
System.out.println("DEBUG-B");
int flushCount = ramCache.wSize() / 500;
if (flushCount > 80) flushCount = 80;
if (flushCount < 10) flushCount = Math.min(10, ramCache.wSize());
System.out.println("DEBUG-C");
flushCache(flushCount);
System.out.println("DEBUG-D");
flushCache(flushCount);
}
public void flushCache(int count) {
if (count <= 0) return;
synchronized (ramCache) {
ramCache.shiftK2W();
busyCacheFlush = true;
for (int i = 0; i < count; i++) {
String wordHash;
System.out.println("DEBUG-Started flush of " + count + " entries from RAM to DB");
long start = System.currentTimeMillis();
for (int i = 0; i < count; i++) { // possible position of outOfMemoryError ?
if (ramCache.wSize() == 0) break;
synchronized (this) { flushCache(ramCache.bestFlushWordHash()); }
wordHash = ramCache.bestFlushWordHash();
// flush the wordHash
indexContainer c = ramCache.deleteContainer(wordHash);
if (c != null) {
if (useCollectionIndex) {
indexContainer feedback = collections.addEntries(c, c.updated(), false);
if (feedback != null) {
throw new RuntimeException("indexCollectionRI shall not return feedback entries; feedback = " + feedback.toString());
}
} else {
indexContainer feedback = assortmentCluster.addEntries(c, c.updated(), false);
if (feedback != null) {
backend.addEntries(feedback, System.currentTimeMillis(), true);
}
}
}
// pause to next loop to give other processes a chance to use IO
try {Thread.sleep(8);} catch (InterruptedException e) {}
}
System.out.println("DEBUG-Finished flush of " + count + " entries from RAM to DB in " + (System.currentTimeMillis() - start) + " milliseconds");
busyCacheFlush = false;
}
}
private synchronized void flushCache(String wordHash) {
indexContainer c = ramCache.deleteContainer(wordHash);
if (c != null) {
if (useCollectionIndex) {
indexContainer feedback = collections.addEntries(c, c.updated(), false);
if (feedback != null) {
throw new RuntimeException("indexCollectionRI shall not return feedback entries; feedback = " + feedback.toString());
}
} else {
indexContainer feedback = assortmentCluster.addEntries(c, c.updated(), false);
if (feedback != null) {
backend.addEntries(feedback, System.currentTimeMillis(), true);
}
}
}
}
private static final int hour = 3600000;
private static final int day = 86400000;
@ -289,7 +295,7 @@ public final class plasmaWordIndex extends indexAbstractRI implements indexRI {
// if ((s.length() > 4) && (c > 1)) System.out.println("# " + s + ":" + c);
wordHash = indexEntryAttribute.word2hash(word);
ientry = new indexURLEntry(urlHash,
urlLength, urlComps, (document == null) ? urlLength : document.longTitle.length(),
urlLength, urlComps, (document == null) ? urlLength : document.longTitle.length(),
wprop.count,
condenser.RESULT_SIMI_WORDS,
condenser.RESULT_SIMI_SENTENCES,
@ -412,16 +418,18 @@ public final class plasmaWordIndex extends indexAbstractRI implements indexRI {
}
public synchronized indexContainer deleteContainer(String wordHash) {
indexContainer c = ramCache.deleteContainer(wordHash);
if (c == null) c = new indexRowSetContainer(wordHash);
if (useCollectionIndex) c.add(collections.deleteContainer(wordHash), -1);
c.add(assortmentCluster.deleteContainer(wordHash), -1);
c.add(backend.deleteContainer(wordHash), -1);
return c;
synchronized (ramCache) {
indexContainer c = ramCache.deleteContainer(wordHash);
if (c == null) c = new indexRowSetContainer(wordHash);
if (useCollectionIndex) c.add(collections.deleteContainer(wordHash), -1);
c.add(assortmentCluster.deleteContainer(wordHash), -1);
c.add(backend.deleteContainer(wordHash), -1);
return c;
}
}
public boolean removeEntry(String wordHash, String urlHash, boolean deleteComplete) {
synchronized (this) {
synchronized (ramCache) {
if (ramCache.removeEntry(wordHash, urlHash, deleteComplete)) return true;
if (useCollectionIndex) {if (collections.removeEntry(wordHash, urlHash, deleteComplete)) return true;}
if (assortmentCluster.removeEntry(wordHash, urlHash, deleteComplete)) return true;
@ -431,7 +439,7 @@ public final class plasmaWordIndex extends indexAbstractRI implements indexRI {
public int removeEntries(String wordHash, Set urlHashes, boolean deleteComplete) {
int removed = 0;;
synchronized (this) {
synchronized (ramCache) {
removed += ramCache.removeEntries(wordHash, urlHashes, deleteComplete);
if (removed == urlHashes.size()) return removed;
if (useCollectionIndex) {