@Override
public int toStream(byte[] content, int offset) {
offset = super.toStream(content, offset);
OLongSerializer.INSTANCE.serializeNative(pageIndex, content, offset);
offset += OLongSerializer.LONG_SIZE;
OLongSerializer.INSTANCE.serializeNative(fileId, content, offset);
offset += OLongSerializer.LONG_SIZE;
return offset;
}
@Override
public int toStream(final byte[] content, int offset) {
OIntegerSerializer.INSTANCE.serializeNative(dirtyPages.size(), content, offset);
offset += OIntegerSerializer.INT_SIZE;
for (ODirtyPage dirtyPage : dirtyPages) {
OLongSerializer.INSTANCE.serializeNative(dirtyPage.getPageIndex(), content, offset);
offset += OLongSerializer.LONG_SIZE;
stringSerializer.serializeNativeObject(dirtyPage.getFileName(), content, offset);
offset += stringSerializer.getObjectSize(dirtyPage.getFileName());
OLongSerializer.INSTANCE.serializeNative(dirtyPage.getLsn().getSegment(), content, offset);
offset += OLongSerializer.LONG_SIZE;
OLongSerializer.INSTANCE.serializeNative(dirtyPage.getLsn().getPosition(), content, offset);
offset += OLongSerializer.LONG_SIZE;
}
return offset;
}
@Override
public int toStream(byte[] content, int offset) {
offset = super.toStream(content, offset);
OStringSerializer.INSTANCE.serializeNativeObject(fileName, content, offset);
offset += OStringSerializer.INSTANCE.getObjectSize(fileName);
OLongSerializer.INSTANCE.serializeNative(fileId, content, offset);
offset += OLongSerializer.LONG_SIZE;
return offset;
}
private void flushPage(long fileId, long pageIndex, ODirectMemoryPointer dataPointer)
throws IOException {
if (writeAheadLog != null) {
OLogSequenceNumber lsn = ODurablePage.getLogSequenceNumberFromPage(dataPointer);
OLogSequenceNumber flushedLSN = writeAheadLog.getFlushedLSN();
if (flushedLSN == null || flushedLSN.compareTo(lsn) < 0) writeAheadLog.flush();
}
final byte[] content = dataPointer.get(0, pageSize);
OLongSerializer.INSTANCE.serializeNative(MAGIC_NUMBER, content, 0);
final int crc32 = calculatePageCrc(content);
OIntegerSerializer.INSTANCE.serializeNative(crc32, content, OLongSerializer.LONG_SIZE);
final OFileClassic fileClassic = files.get(fileId);
fileClassic.write(pageIndex * pageSize, content);
if (syncOnPageFlush) fileClassic.synch();
}
