74 static void thr_destroy(struct pthread *curthread, struct pthread *thread);
119 		 * XXX we don't free initial thread, because there might  in _thr_gc()
120 		 * have some code referencing initial thread.  in _thr_gc()
123 			DBG_MSG("Initial thread won't be freed\n");  in _thr_gc()
134 	struct pthread	*thread = NULL;  in _thr_alloc()  local
142 			if ((thread = TAILQ_FIRST(&free_threadq)) != NULL) {  in _thr_alloc()
143 				TAILQ_REMOVE(&free_threadq, thread, tle);  in _thr_alloc()
149 	if (thread == NULL) {  in _thr_alloc()
153 		thread = __thr_aligned_alloc_offset(_Alignof(struct pthread),  in _thr_alloc()
155 		if (thread == NULL) {  in _thr_alloc()
159 		memset(thread, 0, sizeof(*thread));  in _thr_alloc()
160 		if ((thread->sleepqueue = _sleepq_alloc()) == NULL ||  in _thr_alloc()
161 		    (thread->wake_addr = _thr_alloc_wake_addr()) == NULL) {  in _thr_alloc()
162 			thr_destroy(curthread, thread);  in _thr_alloc()
167 		bzero(&thread->_pthread_startzero,   in _thr_alloc()
172 		tcb = _tcb_ctor(thread, 0 /* not initial tls */);  in _thr_alloc()
175 		tcb = _tcb_ctor(thread, 1 /* initial tls */);  in _thr_alloc()
178 		thread->tcb = tcb;  in _thr_alloc()
180 		thr_destroy(curthread, thread);  in _thr_alloc()
182 		thread = NULL;  in _thr_alloc()
184 	return (thread);  in _thr_alloc()
188 _thr_free(struct pthread *curthread, struct pthread *thread)  in _thr_free()  argument
190 	DBG_MSG("Freeing thread %p\n", thread);  in _thr_free()
199 		_tcb_dtor(thread->tcb);  in _thr_free()
202 		_tcb_dtor(thread->tcb);  in _thr_free()
204 	thread->tcb = NULL;  in _thr_free()
206 		thr_destroy(curthread, thread);  in _thr_free()
210 		 * Add the thread to the free thread list, this also avoids  in _thr_free()
214 		TAILQ_INSERT_TAIL(&free_threadq, thread, tle);  in _thr_free()
221 thr_destroy(struct pthread *curthread __unused, struct pthread *thread)  in thr_destroy()  argument
223 	if (thread->sleepqueue != NULL)  in thr_destroy()
224 		_sleepq_free(thread->sleepqueue);  in thr_destroy()
225 	if (thread->wake_addr != NULL)  in thr_destroy()
226 		_thr_release_wake_addr(thread->wake_addr);  in thr_destroy()
227 	__thr_free(thread);  in thr_destroy()
231  * Add the thread to the list of all threads and increment
235 _thr_link(struct pthread *curthread, struct pthread *thread)  in _thr_link()  argument
238 	THR_LIST_ADD(thread);  in _thr_link()
244  * Remove an active thread.
247 _thr_unlink(struct pthread *curthread, struct pthread *thread)  in _thr_unlink()  argument
250 	THR_LIST_REMOVE(thread);  in _thr_unlink()
256 _thr_hash_add(struct pthread *thread)  in _thr_hash_add()  argument
260 	head = &thr_hashtable[THREAD_HASH(thread)];  in _thr_hash_add()
261 	LIST_INSERT_HEAD(head, thread, hle);  in _thr_hash_add()
265 _thr_hash_remove(struct pthread *thread)  in _thr_hash_remove()  argument
267 	LIST_REMOVE(thread, hle);  in _thr_hash_remove()
271 _thr_hash_find(struct pthread *thread)  in _thr_hash_find()  argument
276 	head = &thr_hashtable[THREAD_HASH(thread)];  in _thr_hash_find()
278 		if (td == thread)  in _thr_hash_find()
279 			return (thread);  in _thr_hash_find()
285  * Find a thread in the linked list of active threads and add a reference
290 _thr_ref_add(struct pthread *curthread, struct pthread *thread,  in _thr_ref_add()  argument
295 	if (thread == NULL)  in _thr_ref_add()
296 		/* Invalid thread: */  in _thr_ref_add()
299 	if ((ret = _thr_find_thread(curthread, thread, include_dead)) == 0) {  in _thr_ref_add()
300 		thread->refcount++;  in _thr_ref_add()
302 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_ref_add()
305 	/* Return zero if the thread exists: */  in _thr_ref_add()
310 _thr_ref_delete(struct pthread *curthread, struct pthread *thread)  in _thr_ref_delete()  argument
312 	THR_THREAD_LOCK(curthread, thread);  in _thr_ref_delete()
313 	thread->refcount--;  in _thr_ref_delete()
314 	_thr_try_gc(curthread, thread);  in _thr_ref_delete()
318 /* entered with thread lock held, exit with thread lock released */
320 _thr_try_gc(struct pthread *curthread, struct pthread *thread)  in _thr_try_gc()  argument
322 	if (THR_SHOULD_GC(thread)) {  in _thr_try_gc()
323 		THR_REF_ADD(curthread, thread);  in _thr_try_gc()
324 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
326 		THR_THREAD_LOCK(curthread, thread);  in _thr_try_gc()
327 		THR_REF_DEL(curthread, thread);  in _thr_try_gc()
328 		if (THR_SHOULD_GC(thread)) {  in _thr_try_gc()
329 			THR_LIST_REMOVE(thread);  in _thr_try_gc()
330 			THR_GCLIST_ADD(thread);  in _thr_try_gc()
332 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
335 		THR_THREAD_UNLOCK(curthread, thread);  in _thr_try_gc()
339 /* return with thread lock held if thread is found */
341 _thr_find_thread(struct pthread *curthread, struct pthread *thread,  in _thr_find_thread()  argument
347 	if (thread == NULL)  in _thr_find_thread()
352 	pthread = _thr_hash_find(thread);  in _thr_find_thread()