75 static void thr_destroy(struct pthread *curthread, struct pthread *thread);
120 		 * XXX we don't free initial thread, because there might  in _thr_gc()
121 		 * have some code referencing initial thread.  in _thr_gc()
124 			DBG_MSG("Initial thread won't be freed\n");  in _thr_gc()
135 	struct pthread	*thread = NULL;  in _thr_alloc()  local
143 			if ((thread = TAILQ_FIRST(&free_threadq)) != NULL) {  in _thr_alloc()
144 				TAILQ_REMOVE(&free_threadq, thread, tle);  in _thr_alloc()
150 	if (thread == NULL) {  in _thr_alloc()
154 		thread = __thr_aligned_alloc_offset(_Alignof(struct pthread),  in _thr_alloc()
156 		if (thread == NULL) {  in _thr_alloc()
160 		memset(thread, 0, sizeof(*thread));  in _thr_alloc()
161 		if ((thread->sleepqueue = _sleepq_alloc()) == NULL ||  in _thr_alloc()
162 		    (thread->wake_addr = _thr_alloc_wake_addr()) == NULL) {  in _thr_alloc()
163 			thr_destroy(curthread, thread);  in _thr_alloc()
168 		bzero(&thread->_pthread_startzero,   in _thr_alloc()
173 		tcb = _tcb_ctor(thread, 0 /* not initial tls */);  in _thr_alloc()
176 		tcb = _tcb_ctor(thread, 1 /* initial tls */);  in _thr_alloc()
179 		thread->tcb = tcb;  in _thr_alloc()
181 		thr_destroy(curthread, thread);  in _thr_alloc()
183 		thread = NULL;  in _thr_alloc()
185 	return (thread);  in _thr_alloc()
189 _thr_free(struct pthread *curthread, struct pthread *thread)  in _thr_free()  argument
191 	DBG_MSG("Freeing thread %p\n", thread);  in _thr_free()
200 		_tcb_dtor(thread->tcb);  in _thr_free()
203 		_tcb_dtor(thread->tcb);  in _thr_free()
205 	thread->tcb = NULL;  in _thr_free()
207 		thr_destroy(curthread, thread);  in _thr_free()
211 		 * Add the thread to the free thread list, this also avoids  in _thr_free()
215 		TAILQ_INSERT_TAIL(&free_threadq, thread, tle);  in _thr_free()
222 thr_destroy(struct pthread *curthread __unused, struct pthread *thread)  in thr_destroy()  argument
224 	if (thread->sleepqueue != NULL)  in thr_destroy()
225 		_sleepq_free(thread->sleepqueue);  in thr_destroy()
226 	if (thread->wake_addr != NULL)  in thr_destroy()
227 		_thr_release_wake_addr(thread->wake_addr);  in thr_destroy()
228 	__thr_free(thread);  in thr_destroy()
232  * Add the thread to the list of all threads and increment
236 _thr_link(struct pthread *curthread, struct pthread *thread)  in _thr_link()  argument
239 	THR_LIST_ADD(thread);  in _thr_link()
245  * Remove an active thread.
248 _thr_unlink(struct pthread *curthread, struct pthread *thread)  in _thr_unlink()  argument
251 	THR_LIST_REMOVE(thread);  in _thr_unlink()
257 _thr_hash_add(struct pthread *thread)  in _thr_hash_add()  argument
261 	head = &thr_hashtable[THREAD_HASH(thread)];  in _thr_hash_add()
262 	LIST_INSERT_HEAD(head, thread, hle);  in _thr_hash_add()
266 _thr_hash_remove(struct pthread *thread)  in _thr_hash_remove()  argument
268 	LIST_REMOVE(thread, hle);  in _thr_hash_remove()
272 _thr_hash_find(struct pthread *thread)  in _thr_hash_find()  argument
277 	head = &thr_hashtable[THREAD_HASH(thread)];  in _thr_hash_find()
279 		if (td == thread)  in _thr_hash_find()
280 			return (thread);  in _thr_hash_find()
286  * Find a thread in the linked list of active threads and add a reference
291 _thr_ref_add(struct pthread *curthread, struct pthread *thread,  in _thr_ref_add()  argument
296 	if (thread == NULL)  in _thr_ref_add()
297 		/* Invalid thread: */  in _thr_ref_add()
300 	if ((ret = _thr_find_thread(curthread, thread, include_dead)) == 0) {  in _thr_ref_add()
301 		thread->refcount++;  in _thr_ref_add()
303 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_ref_add()
306 	/* Return zero if the thread exists: */  in _thr_ref_add()
311 _thr_ref_delete(struct pthread *curthread, struct pthread *thread)  in _thr_ref_delete()  argument
313 	THR_THREAD_LOCK(curthread, thread);  in _thr_ref_delete()
314 	thread->refcount--;  in _thr_ref_delete()
315 	_thr_try_gc(curthread, thread);  in _thr_ref_delete()
319 /* entered with thread lock held, exit with thread lock released */
321 _thr_try_gc(struct pthread *curthread, struct pthread *thread)  in _thr_try_gc()  argument
323 	if (THR_SHOULD_GC(thread)) {  in _thr_try_gc()
324 		THR_REF_ADD(curthread, thread);  in _thr_try_gc()
325 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
327 		THR_THREAD_LOCK(curthread, thread);  in _thr_try_gc()
328 		THR_REF_DEL(curthread, thread);  in _thr_try_gc()
329 		if (THR_SHOULD_GC(thread)) {  in _thr_try_gc()
330 			THR_LIST_REMOVE(thread);  in _thr_try_gc()
331 			THR_GCLIST_ADD(thread);  in _thr_try_gc()
333 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
336 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
340 /* return with thread lock held if thread is found */
342 _thr_find_thread(struct pthread *curthread, struct pthread *thread,  in _thr_find_thread()  argument
348 	if (thread == NULL)  in _thr_find_thread()
353 	pthread = _thr_hash_find(thread);  in _thr_find_thread()