Examples with ICachedPage org.apache.hyracks.storage.common.buffercache.ICachedPage used on opensource projects

Example 46 with ICachedPage

use of org.apache.hyracks.storage.common.buffercache.ICachedPage in project asterixdb by apache.

the class LinkedMetaDataPageManager method init.

@Override
public void init(ITreeIndexFrameFactory interiorFrameFactory, ITreeIndexFrameFactory leafFrameFactory) throws HyracksDataException {
    // initialize meta data page
    ITreeIndexMetadataFrame metaFrame = createMetadataFrame();
    int metaPage = getMetadataPageId();
    if (metaPage == IBufferCache.INVALID_PAGEID) {
        throw new HyracksDataException("No valid metadata found in this file.");
    }
    ICachedPage metaNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, getMetadataPageId()), true);
    metaNode.acquireWriteLatch();
    try {
        metaFrame.setPage(metaNode);
        metaFrame.init();
        metaFrame.setRootPageId(1);
        metaFrame.setMaxPage(1);
    } finally {
        metaNode.releaseWriteLatch(true);
        bufferCache.flushDirtyPage(metaNode);
        bufferCache.unpin(metaNode);
    }
    int rootPage = getRootPageId();
    ICachedPage rootNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, rootPage), true);
    rootNode.acquireWriteLatch();
    try {
        ITreeIndexFrame leafFrame = leafFrameFactory.createFrame();
        leafFrame.setPage(rootNode);
        leafFrame.initBuffer((byte) 0);
    } finally {
        rootNode.releaseWriteLatch(true);
        bufferCache.flushDirtyPage(rootNode);
        bufferCache.unpin(rootNode);
    }
}

Example 47 with ICachedPage

use of org.apache.hyracks.storage.common.buffercache.ICachedPage in project asterixdb by apache.

the class LinkedMetaDataPageManager method getMaxPageId.

@Override
public int getMaxPageId(ITreeIndexMetadataFrame metaFrame) throws HyracksDataException {
    ICachedPage metaNode;
    int mdPage = getMetadataPageId();
    if (mdPage < 0) {
        return IBufferCache.INVALID_PAGEID;
    }
    metaNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, mdPage), false);
    metaNode.acquireReadLatch();
    int maxPage = -1;
    try {
        metaFrame.setPage(metaNode);
        maxPage = metaFrame.getMaxPage();
    } finally {
        metaNode.releaseReadLatch();
        bufferCache.unpin(metaNode);
    }
    return maxPage;
}

Example 48 with ICachedPage

use of org.apache.hyracks.storage.common.buffercache.ICachedPage in project asterixdb by apache.

the class LinkedMetaDataPageManager method setRootPageId.

@Override
public void setRootPageId(int rootPage) throws HyracksDataException {
    ICachedPage metaNode = bufferCache.pin(BufferedFileHandle.getDiskPageId(fileId, getMetadataPageId()), false);
    ITreeIndexMetadataFrame metaFrame = frameFactory.createFrame();
    metaNode.acquireWriteLatch();
    try {
        metaFrame.setPage(metaNode);
        metaFrame.setRootPageId(rootPage);
    } finally {
        metaNode.releaseWriteLatch(true);
        bufferCache.unpin(metaNode);
        ready = true;
    }
}

Example 49 with ICachedPage

use of org.apache.hyracks.storage.common.buffercache.ICachedPage in project asterixdb by apache.

the class AppendOnlyLinkedMetadataPageManager method get.

@Override
public void get(ITreeIndexMetadataFrame frame, IValueReference key, IPointable value) throws HyracksDataException {
    ICachedPage page = pinPage();
    page.acquireReadLatch();
    try {
        frame.setPage(page);
        frame.get(key, value);
    } finally {
        page.releaseReadLatch();
        unpinPage(page);
    }
}

Example 50 with ICachedPage

use of org.apache.hyracks.storage.common.buffercache.ICachedPage in project asterixdb by apache.

the class AppendOnlyLinkedMetadataPageManager method getFileOffset.

@Override
public long getFileOffset(ITreeIndexMetadataFrame frame, IValueReference key) throws HyracksDataException {
    int pageId = getMetadataPageId();
    if (pageId != IBufferCache.INVALID_PAGEID) {
        ICachedPage page = pinPage();
        page.acquireReadLatch();
        try {
            frame.setPage(page);
            int inPageOffset = frame.getOffset(key);
            return inPageOffset >= 0 ? ((long) pageId * bufferCache.getPageSizeWithHeader()) + frame.getOffset(key) + IBufferCache.RESERVED_HEADER_BYTES : -1L;
        } finally {
            page.releaseReadLatch();
            unpinPage(page);
        }
    }
    return -1L;
}