1808 	sigqhdr_t *sqh;  in sigqsend()  local
1810 	sqh = (sigqhdr_t *)sigqp->sq_backptr;  in sigqsend()
1811 	ASSERT(sqh);  in sigqsend()
1813 	mutex_enter(&sqh->sqb_lock);  in sigqsend()
1814 	sqh->sqb_sent++;  in sigqsend()
1815 	mutex_exit(&sqh->sqb_lock);  in sigqsend()
2384 	sigqhdr_t *sqh;  in sigqhdralloc()  local
2394 	sqh = kmem_alloc(i, KM_SLEEP);  in sigqhdralloc()
2395 	sqh->sqb_count = maxcount;  in sigqhdralloc()
2396 	sqh->sqb_maxcount = maxcount;  in sigqhdralloc()
2397 	sqh->sqb_size = i;  in sigqhdralloc()
2398 	sqh->sqb_pexited = 0;  in sigqhdralloc()
2399 	sqh->sqb_sent = 0;  in sigqhdralloc()
2400 	sqh->sqb_free = sq = (sigqueue_t *)(sqh + 1);  in sigqhdralloc()
2407 	cv_init(&sqh->sqb_cv, NULL, CV_DEFAULT, NULL);  in sigqhdralloc()
2408 	mutex_init(&sqh->sqb_lock, NULL, MUTEX_DEFAULT, NULL);  in sigqhdralloc()
2409 	return (sqh);  in sigqhdralloc()
2420 sigqalloc(sigqhdr_t *sqh)  in sigqalloc()  argument
2426 	if (sqh != NULL) {  in sigqalloc()
2427 		mutex_enter(&sqh->sqb_lock);  in sigqalloc()
2428 		if (sqh->sqb_count > 0) {  in sigqalloc()
2429 			sqh->sqb_count--;  in sigqalloc()
2430 			if (sqh->sqb_free == NULL) {  in sigqalloc()
2437 				sq = sqh->sqb_free;  in sigqalloc()
2439 				sqh->sqb_free = sq->sq_next;  in sigqalloc()
2441 			mutex_exit(&sqh->sqb_lock);  in sigqalloc()
2443 			sq->sq_backptr = sqh;  in sigqalloc()
2447 			mutex_exit(&sqh->sqb_lock);  in sigqalloc()
2459 	sigqhdr_t *sqh;  in sigqrel()  local
2463 	sqh = (sigqhdr_t *)sq->sq_backptr;  in sigqrel()
2464 	mutex_enter(&sqh->sqb_lock);  in sigqrel()
2465 	if (sqh->sqb_pexited && sqh->sqb_sent == 1) {  in sigqrel()
2466 		mutex_exit(&sqh->sqb_lock);  in sigqrel()
2467 		cv_destroy(&sqh->sqb_cv);  in sigqrel()
2468 		mutex_destroy(&sqh->sqb_lock);  in sigqrel()
2469 		kmem_free(sqh, sqh->sqb_size);  in sigqrel()
2471 		sqh->sqb_count++;  in sigqrel()
2472 		sqh->sqb_sent--;  in sigqrel()
2473 		sq->sq_next = sqh->sqb_free;  in sigqrel()
2475 		sqh->sqb_free = sq;  in sigqrel()
2476 		cv_signal(&sqh->sqb_cv);  in sigqrel()
2477 		mutex_exit(&sqh->sqb_lock);  in sigqrel()
2505 sigqhdrfree(sigqhdr_t *sqh)  in sigqhdrfree()  argument
2507 	mutex_enter(&sqh->sqb_lock);  in sigqhdrfree()
2508 	if (sqh->sqb_sent == 0) {  in sigqhdrfree()
2509 		mutex_exit(&sqh->sqb_lock);  in sigqhdrfree()
2510 		cv_destroy(&sqh->sqb_cv);  in sigqhdrfree()
2511 		mutex_destroy(&sqh->sqb_lock);  in sigqhdrfree()
2512 		kmem_free(sqh, sqh->sqb_size);  in sigqhdrfree()
2514 		sqh->sqb_pexited = 1;  in sigqhdrfree()
2515 		mutex_exit(&sqh->sqb_lock);  in sigqhdrfree()