Examples with CursorContext org.neo4j.io.pagecache.context.CursorContext used on opensource projects

Example 96 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class PageCacheByteArray method setByte.

@Override
public void setByte(long index, int offset, byte value) {
    long pageId = pageId(index);
    offset += offset(index);
    try (CursorContext cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(PAGE_CACHE_BYTE_ARRAY_WORKER_TAG));
        PageCursor cursor = pagedFile.io(pageId, PF_SHARED_WRITE_LOCK | PF_NO_GROW, cursorContext)) {
        cursor.next();
        cursor.putByte(offset, value);
        checkBounds(cursor);
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

Example 97 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class PageCacheByteArray method set6ByteLong.

@Override
public void set6ByteLong(long index, int offset, long value) {
    long pageId = pageId(index);
    offset += offset(index);
    try (CursorContext cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(PAGE_CACHE_BYTE_ARRAY_WORKER_TAG));
        PageCursor cursor = pagedFile.io(pageId, PF_SHARED_WRITE_LOCK | PF_NO_GROW, cursorContext)) {
        cursor.next();
        cursor.putInt(offset, (int) value);
        cursor.putShort(offset + Integer.BYTES, (short) (value >>> Integer.SIZE));
        checkBounds(cursor);
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

Example 98 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class PageCacheByteArray method getByte.

@Override
public byte getByte(long index, int offset) {
    long pageId = pageId(index);
    offset += offset(index);
    try (CursorContext cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(PAGE_CACHE_BYTE_ARRAY_WORKER_TAG));
        PageCursor cursor = pagedFile.io(pageId, PF_SHARED_READ_LOCK, cursorContext)) {
        cursor.next();
        byte result;
        do {
            result = cursor.getByte(offset);
        } while (cursor.shouldRetry());
        checkBounds(cursor);
        return result;
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

Example 99 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class PageCacheByteArray method get6ByteLong.

@Override
public long get6ByteLong(long index, int offset) {
    long pageId = pageId(index);
    offset += offset(index);
    try (CursorContext cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(PAGE_CACHE_BYTE_ARRAY_WORKER_TAG));
        PageCursor cursor = pagedFile.io(pageId, PF_SHARED_READ_LOCK, cursorContext)) {
        cursor.next();
        long result;
        do {
            long low4b = cursor.getInt(offset) & 0xFFFFFFFFL;
            long high2b = cursor.getShort(offset + Integer.BYTES) & 0xFFFF;
            result = low4b | (high2b << Integer.SIZE);
        } while (cursor.shouldRetry());
        checkBounds(cursor);
        return result == 0xFFFFFFFFFFFFL ? -1 : result;
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

Example 100 with CursorContext

use of org.neo4j.io.pagecache.context.CursorContext in project neo4j by neo4j.

the class PageCacheByteArray method swap.

@Override
public void swap(long fromIndex, long toIndex) {
    long fromPageId = pageId(fromIndex);
    int fromOffset = offset(fromIndex);
    long toPageId = pageId(toIndex);
    int toOffset = offset(toIndex);
    try (CursorContext cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer(PAGE_CACHE_BYTE_ARRAY_WORKER_TAG));
        PageCursor fromCursor = pagedFile.io(fromPageId, PF_SHARED_WRITE_LOCK, cursorContext);
        PageCursor toCursor = pagedFile.io(toPageId, PF_SHARED_WRITE_LOCK, cursorContext)) {
        fromCursor.next();
        toCursor.next();
        for (int i = 0; i < entrySize; i++, fromOffset++, toOffset++) {
            byte intermediary = fromCursor.getByte(fromOffset);
            fromCursor.putByte(fromOffset, toCursor.getByte(toOffset));
            toCursor.putByte(toOffset, intermediary);
        }
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}