Changeset 25616 in vbox for trunk/include/iprt/semaphore.h

Timestamp:

Jan 2, 2010 12:13:19 AM (15 years ago)

Author:

vboxsync

Message:

iprt/semrw-*: Added RTSemRWGetReadCount. Adjusted writer fairness a little bit in semrw-generic.cpp.

File:

• trunk/include/iprt/semaphore.h (modified) (1 diff)

trunk/include/iprt/semaphore.h

@@ -594 +594 @@
  */
 RTDECL(uint32_t) RTSemRWGetWriterReadRecursion(RTSEMRW RWSem);
+
+/**
+ * Gets the current number of reads.
+ *
+ * This includes all read recursions, so it might be higher than the number of
+ * read owners.  It does not include reads done by the current writer.
+ *
+ * @returns The read count (0 if bad semaphore handle).
+ * @param   RWSem       The Read/Write semaphore in question.
+ */
+RTDECL(uint32_t) RTSemRWGetReadCount(RTSEMRW RWSem);
 
 /** @} */