mikemccand commented on a change in pull request #1397: LUCENE-9304: Refactor
DWPTPool to pool DWPT directly
URL: https://github.com/apache/lucene-solr/pull/1397#discussion_r403703730
##########
File path:
lucene/core/src/java/org/apache/lucene/index/DocumentsWriterPerThread.java
##########
@@ -600,5 +608,81 @@ public String toString() {
+ ", segment=" + (segmentInfo != null ? segmentInfo.name : "null") + ",
aborted=" + aborted + ", numDocsInRAM="
+ numDocsInRAM + ", deleteQueue=" + deleteQueue + "]";
}
-
+
+
+ /**
+ * Returns true iff this DWPT is marked as flush pending
+ */
+ boolean isFlushPending() {
+ return flushPending.get() == Boolean.TRUE;
+ }
+
+ /**
+ * Sets this DWPT as flush pending. This can only be set once.
+ */
+ void setFlushPending() {
+ flushPending.set(Boolean.TRUE);
+ }
+
+
+ /**
+ * Returns the last committed bytes for this DWPT. This method can be called
+ * without acquiring the DWPTs lock.
+ */
+ long getLastCommittedBytesUsed() {
+ return lastCommittedBytesUsed;
+ }
+
+ /**
+ * Commits the current {@link #bytesUsed()} and stores it's value for later
reuse.
+ * The last committed bytes used can be retrieved via {@link
#getLastCommittedBytesUsed()}
+ * @return the delta between the current {@link #bytesUsed()} and the
current {@link #getLastCommittedBytesUsed()}
+ */
+ long commitLastBytesUsed() {
+ assert isHeldByCurrentThread();
+ long delta = bytesUsed() - lastCommittedBytesUsed;
+ lastCommittedBytesUsed += delta;
+ return delta;
+ }
+
+ /**
+ * Locks this DWPT for exclusive access.
+ * @see ReentrantLock#lock()
+ */
+ void lock() {
+ lock.lock();
+ }
+
+ /**
+ * Acquires the DWPTs lock only if it is not held by another thread at the
time
+ * of invocation.
+ * @return true if the lock was acquired.
+ * @see ReentrantLock#tryLock()
+ */
+ boolean tryLock() {
+ return lock.tryLock();
+ }
+
+ /**
+ * Returns true if the DWPTs lock is held by the current thread
+ * @see ReentrantLock#isHeldByCurrentThread()
+ */
+ boolean isHeldByCurrentThread() {
+ return lock.isHeldByCurrentThread();
+ }
+
+ /**
+ * Unlocks the DWPTs lock
Review comment:
Here too.
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