Cross Reference: /illumos-gate/usr/src/lib/libc/port/threads/rwlock.c

Lines Matching refs:readers
38 #define	ASSERT_CONSISTENT_STATE(readers)		\
39 	ASSERT(!((readers) & URW_WRITE_LOCKED) ||	\
40 		((readers) & ~URW_HAS_WAITERS) == URW_WRITE_LOCKED)
139 	uint32_t readers;
147 	readers = *rwstate;
148 	ASSERT_CONSISTENT_STATE(readers);
149 	if (!(readers & URW_WRITE_LOCKED) &&
150 	    (readers & URW_READERS_MASK) != 0) {
182 	uint32_t readers;
188 	readers = *rwstate;
189 	ASSERT_CONSISTENT_STATE(readers);
190 	rval = ((readers & URW_WRITE_LOCKED) &&
279  * Attempt to acquire a readers lock.  Return true on success.
287 	uint32_t readers;
291 	while (((readers = *rwstate) & mask) == 0) {
292 		if (atomic_cas_32(rwstate, readers, readers + 1) == readers) {
308 	uint32_t readers;
312 	while (((readers = *rwstate) & URW_HAS_WAITERS) == 0) {
313 		if (atomic_cas_32(rwstate, readers, readers - 1) == readers) {
333 	uint32_t readers;
336 	while (((readers = *rwstate) & mask) == 0) {
337 		if (atomic_cas_32(rwstate, readers, readers | URW_WRITE_LOCKED)
338 		    == readers) {
354 	uint32_t readers;
358 	while (((readers = *rwstate) & URW_HAS_WAITERS) == 0) {
359 		if (atomic_cas_32(rwstate, readers, 0) == readers) {
377 	uint32_t readers;
394 	readers = *rwstate;
395 	ASSERT_CONSISTENT_STATE(readers);
396 	if (readers & URW_WRITE_LOCKED)	/* drop the writer lock */
398 	else				/* drop the readers lock */
400 	if (!(readers & URW_HAS_WAITERS)) {	/* no waiters */
412 	readers = *rwstate;		/* must fetch the value again */
413 	ASSERT_CONSISTENT_STATE(readers);
414 	ASSERT(readers & URW_HAS_WAITERS);
415 	readers &= URW_READERS_MASK;	/* count of current readers */
420 	 * to wake up as many readers as we encounter before encountering
440 			if (writer != 0 || readers != 0)
448 			readers++;
507 	uint32_t readers;
538 		readers = *rwstate;
539 		ASSERT_CONSISTENT_STATE(readers);
579 	uint32_t readers;
609 		readers = *rwstate;
610 		ASSERT_CONSISTENT_STATE(readers);
611 		if ((readers & URW_WRITE_LOCKED) ||
613 		    (readers & URW_READERS_MASK) != 0))
663 		 * Enqueue writers ahead of readers.
716 	 * If we already hold a readers lock on this rwlock,
820 	 * If we hold a readers lock on this rwlock, bail out.
825 			    "calling thread owns the readers lock");
924 	 * If we already hold a readers lock on this rwlock,
1011 	uint32_t readers;
1017 	readers = *rwstate;
1018 	ASSERT_CONSISTENT_STATE(readers);
1019 	if (readers & URW_WRITE_LOCKED) {
1021 		readers = 0;
1024 		readers &= URW_READERS_MASK;
1047 	} else if (readers > 0) {
1049 		 * A readers lock is held; if we don't hold one, bail out.
1059 				    "readers lock held, "
1064 		 * If we hold more than one readers lock on this rwlock,