/** If tracked offsets may be present, get them so they are ready to be written to the log. */
private void getOffsets() {
if (needOffsets) {
long[] offsets = trackedSummary.getObsoleteOffsets();
if (offsets != null) {
int oldSize = obsoleteOffsets.getExtraMemorySize();
obsoleteOffsets.pack(offsets);
int newSize = obsoleteOffsets.getExtraMemorySize();
memBudget.updateTreeMemoryUsage(newSize - oldSize);
}
needOffsets = false;
}
}
/** @see LN#writeToLog */
public void writeToLog(ByteBuffer logBuffer) {
/*
* Add the tracked (live) summary to the base summary before writing it
* to the log, and reset the tracked summary. Do this even when
* deleting the LN, so that the tracked summary is cleared.
*/
if (trackedSummary != null) {
baseSummary.add(trackedSummary);
if (!isDeleted()) {
getOffsets();
}
/* Reset the totals to zero and clear the tracked offsets. */
trackedSummary.reset();
}
super.writeToLog(logBuffer);
if (!isDeleted()) {
baseSummary.writeToLog(logBuffer);
obsoleteOffsets.writeToLog(logBuffer);
}
}
/**
* Dump additional fields. Done this way so the additional info can be within the XML tags
* defining the dumped log entry.
*/
protected void dumpLogAdditional(StringBuffer sb, boolean verbose) {
if (!isDeleted()) {
baseSummary.dumpLog(sb, true);
if (verbose) {
obsoleteOffsets.dumpLog(sb, true);
}
}
}
/**
* This log entry type is configured to perform marshaling (getLogSize and writeToLog) under the
* write log mutex. Otherwise, the size could change in between calls to these two methods as the
* result of utilizaton tracking.
*
* @see LN#getLogSize
*/
public int getLogSize() {
int size = super.getLogSize();
if (!isDeleted()) {
size += baseSummary.getLogSize();
getOffsets();
size += obsoleteOffsets.getLogSize();
}
return size;
}
public String dumpString(int nSpaces, boolean dumpTags) {
StringBuffer sb = new StringBuffer();
sb.append(super.dumpString(nSpaces, dumpTags));
sb.append('\n');
if (!isDeleted()) {
sb.append(baseSummary.toString());
sb.append(obsoleteOffsets.toString());
}
return sb.toString();
}
/** @see LN#readFromLog */
public void readFromLog(ByteBuffer itemBuffer, byte entryVersion) throws LogException {
this.entryVersion = entryVersion;
super.readFromLog(itemBuffer, entryVersion);
if (!isDeleted()) {
baseSummary.readFromLog(itemBuffer, entryVersion);
if (entryVersion > 0) {
obsoleteOffsets.readFromLog(itemBuffer, entryVersion);
}
}
}
/** Overrides this method to add space occupied by this object's fields. */
@Override
public long getMemorySizeIncludedByParent() {
return super.getMemorySizeIncludedByParent()
+ (MemoryBudget.FILESUMMARYLN_OVERHEAD - MemoryBudget.LN_OVERHEAD)
+ obsoleteOffsets.getExtraMemorySize();
}