Examples with OCacheEntry com.orientechnologies.orient.core.storage.cache.OCacheEntry used on opensource projects

Example 36 with OCacheEntry

use of com.orientechnologies.orient.core.storage.cache.OCacheEntry in project orientdb by orientechnologies.

the class OClusterPositionMap method allocate.

public long allocate() throws IOException {
    startOperation();
    try {
        OAtomicOperation atomicOperation = startAtomicOperation(true);
        acquireExclusiveLock();
        try {
            long lastPage = getFilledUpTo(atomicOperation, fileId) - 1;
            OCacheEntry cacheEntry;
            if (lastPage < 0)
                cacheEntry = addPage(atomicOperation, fileId);
            else
                cacheEntry = loadPage(atomicOperation, fileId, lastPage, false, 1);
            Exception exception = null;
            cacheEntry.acquireExclusiveLock();
            try {
                OClusterPositionMapBucket bucket = new OClusterPositionMapBucket(cacheEntry, getChanges(atomicOperation, cacheEntry));
                if (bucket.isFull()) {
                    cacheEntry.releaseExclusiveLock();
                    releasePage(atomicOperation, cacheEntry);
                    cacheEntry = addPage(atomicOperation, fileId);
                    cacheEntry.acquireExclusiveLock();
                    bucket = new OClusterPositionMapBucket(cacheEntry, getChanges(atomicOperation, cacheEntry));
                }
                final long index = bucket.allocate();
                return index + cacheEntry.getPageIndex() * OClusterPositionMapBucket.MAX_ENTRIES;
            } catch (Exception e) {
                exception = e;
                throw OException.wrapException(new OClusterPositionMapException("Error during creation of mapping between logical and physical record position", this), e);
            } finally {
                try {
                    cacheEntry.releaseExclusiveLock();
                    releasePage(atomicOperation, cacheEntry);
                } finally {
                    endAtomicOperation(exception != null, exception);
                }
            }
        } finally {
            releaseExclusiveLock();
        }
    } finally {
        completeOperation();
    }
}

Example 37 with OCacheEntry

use of com.orientechnologies.orient.core.storage.cache.OCacheEntry in project orientdb by orientechnologies.

the class OClusterPositionMap method getFirstPosition.

public long getFirstPosition() throws IOException {
    startOperation();
    try {
        atomicOperationsManager.acquireReadLock(this);
        try {
            acquireSharedLock();
            try {
                OAtomicOperation atomicOperation = atomicOperationsManager.getCurrentOperation();
                final long filledUpTo = getFilledUpTo(atomicOperation, fileId);
                for (long pageIndex = 0; pageIndex < filledUpTo; pageIndex++) {
                    OCacheEntry cacheEntry = loadPage(atomicOperation, fileId, pageIndex, false, 1);
                    cacheEntry.acquireSharedLock();
                    try {
                        OClusterPositionMapBucket bucket = new OClusterPositionMapBucket(cacheEntry, getChanges(atomicOperation, cacheEntry));
                        int bucketSize = bucket.getSize();
                        for (int index = 0; index < bucketSize; index++) {
                            if (bucket.exists(index))
                                return pageIndex * OClusterPositionMapBucket.MAX_ENTRIES + index;
                        }
                    } finally {
                        cacheEntry.releaseSharedLock();
                        releasePage(atomicOperation, cacheEntry);
                    }
                }
                return ORID.CLUSTER_POS_INVALID;
            } finally {
                releaseSharedLock();
            }
        } finally {
            atomicOperationsManager.releaseReadLock(this);
        }
    } finally {
        completeOperation();
    }
}

Example 38 with OCacheEntry

use of com.orientechnologies.orient.core.storage.cache.OCacheEntry in project orientdb by orientechnologies.

the class OClusterPositionMap method remove.

public OClusterPositionMapBucket.PositionEntry remove(final long clusterPosition) throws IOException {
    startOperation();
    try {
        OAtomicOperation atomicOperation = startAtomicOperation(true);
        acquireExclusiveLock();
        try {
            long pageIndex = clusterPosition / OClusterPositionMapBucket.MAX_ENTRIES;
            int index = (int) (clusterPosition % OClusterPositionMapBucket.MAX_ENTRIES);
            Exception exception = null;
            final OCacheEntry cacheEntry = loadPage(atomicOperation, fileId, pageIndex, false, 1);
            cacheEntry.acquireExclusiveLock();
            try {
                final OClusterPositionMapBucket bucket = new OClusterPositionMapBucket(cacheEntry, getChanges(atomicOperation, cacheEntry));
                return bucket.remove(index);
            } catch (Exception e) {
                exception = e;
                throw OException.wrapException(new OClusterPositionMapException("Error during removal of mapping between logical and physical record position", this), e);
            } finally {
                try {
                    cacheEntry.releaseExclusiveLock();
                    releasePage(atomicOperation, cacheEntry);
                } finally {
                    endAtomicOperation(exception != null, exception);
                }
            }
        } finally {
            releaseExclusiveLock();
        }
    } finally {
        completeOperation();
    }
}

Example 39 with OCacheEntry

use of com.orientechnologies.orient.core.storage.cache.OCacheEntry in project orientdb by orientechnologies.

the class OClusterPositionMap method update.

public void update(final long clusterPosition, final OClusterPositionMapBucket.PositionEntry entry) throws IOException {
    startOperation();
    try {
        OAtomicOperation atomicOperation = startAtomicOperation(true);
        acquireExclusiveLock();
        try {
            final long pageIndex = clusterPosition / OClusterPositionMapBucket.MAX_ENTRIES;
            final int index = (int) (clusterPosition % OClusterPositionMapBucket.MAX_ENTRIES);
            if (pageIndex >= getFilledUpTo(atomicOperation, fileId))
                throw new OClusterPositionMapException("Passed in cluster position " + clusterPosition + " is outside of range of cluster-position map", this);
            final OCacheEntry cacheEntry = loadPage(atomicOperation, fileId, pageIndex, false, 1);
            cacheEntry.acquireExclusiveLock();
            try {
                final OClusterPositionMapBucket bucket = new OClusterPositionMapBucket(cacheEntry, getChanges(atomicOperation, cacheEntry));
                bucket.set(index, entry);
            } finally {
                cacheEntry.releaseExclusiveLock();
                releasePage(atomicOperation, cacheEntry);
            }
            endAtomicOperation(false, null);
        } catch (IOException e) {
            endAtomicOperation(true, e);
            throw OException.wrapException(new OClusterPositionMapException("Error of update of mapping between logical and physical record position", this), e);
        } catch (RuntimeException e) {
            endAtomicOperation(true, e);
            throw OException.wrapException(new OClusterPositionMapException("Error of update of mapping between logical and physical record position", this), e);
        } finally {
            releaseExclusiveLock();
        }
    } finally {
        completeOperation();
    }
}

Example 40 with OCacheEntry

use of com.orientechnologies.orient.core.storage.cache.OCacheEntry in project orientdb by orientechnologies.

the class LRUListTest method testAddOneRemoveLRU.

@Test
public void testAddOneRemoveLRU() {
    final OByteBufferPool bufferPool = new OByteBufferPool(1);
    ByteBuffer buffer = bufferPool.acquireDirect(true);
    OCachePointer cachePointerOne = new OCachePointer(buffer, bufferPool, new OLogSequenceNumber(0, 0), 0, 0);
    lruList.putToMRU(new OCacheEntry(1, 10, cachePointerOne, false));
    lruList.removeLRU();
    Assert.assertEquals(lruList.size(), 0);
    Iterator<OCacheEntry> entryIterator = lruList.iterator();
    Assert.assertFalse(entryIterator.hasNext());
}