X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fthread%2Fpthread_create.c;h=48290d35b38afbd9ee3de844c84040be121870e1;hb=1dd6eee692be09f04398f378446afec96bc112f2;hp=0189f02844f1e7af23f25e273b6ff321fdbceb57;hpb=3f39c9b3130cd6c142d358159879b799370a6663;p=musl

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 0189f028..48290d35 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -8,14 +8,18 @@ weak_alias(dummy_0, __synccall_lock);
 weak_alias(dummy_0, __synccall_unlock);
 weak_alias(dummy_0, __pthread_tsd_run_dtors);
 
-void __pthread_do_unwind(struct __ptcb *cb)
+void pthread_exit(void *result)
 {
 	pthread_t self = pthread_self();
 	int n;
 
-	if (cb->__next) {
-		self->cancelbuf = cb->__next->__next;
-		longjmp((void *)cb->__next->__jb, 1);
+	self->result = result;
+
+	while (self->cancelbuf) {
+		void (*f)(void *) = self->cancelbuf->__f;
+		void *x = self->cancelbuf->__x;
+		self->cancelbuf = self->cancelbuf->__next;
+		f(x);
 	}
 
 	__pthread_tsd_run_dtors();
@@ -39,17 +43,16 @@ void __pthread_do_unwind(struct __ptcb *cb)
 	__syscall(SYS_exit, 0);
 }
 
-void __pthread_do_register(struct __ptcb *cb)
+void __do_cleanup_push(struct __ptcb *cb)
 {
 	struct pthread *self = pthread_self();
 	cb->__next = self->cancelbuf;
 	self->cancelbuf = cb;
 }
 
-void __pthread_do_unregister(struct __ptcb *cb)
+void __do_cleanup_pop(struct __ptcb *cb)
 {
-	struct pthread *self = __pthread_self();
-	self->cancelbuf = self->cancelbuf->__next;
+	__pthread_self()->cancelbuf = cb->__next;
 }
 
 static int start(void *p)
@@ -92,20 +95,23 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
 		init_file_lock(__stdin_used);
 		init_file_lock(__stdout_used);
 		init_file_lock(__stderr_used);
-		__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, 8);
 		libc.threaded = 1;
 	}
 
-	if (attr) {
-		guard = ROUND(attr->_a_guardsize + DEFAULT_GUARD_SIZE);
-		size = guard + ROUND(attr->_a_stacksize + DEFAULT_STACK_SIZE);
+	if (attr && attr->_a_stackaddr) {
+		map = 0;
+		tsd = (void *)(attr->_a_stackaddr-__pthread_tsd_size & -16);
+	} else {
+		if (attr) {
+			guard = ROUND(attr->_a_guardsize + DEFAULT_GUARD_SIZE);
+			size = guard + ROUND(attr->_a_stacksize + DEFAULT_STACK_SIZE);
+		}
+		size += __pthread_tsd_size;
+		map = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+		if (map == MAP_FAILED) return EAGAIN;
+		if (guard) mprotect(map, guard, PROT_NONE);
+		tsd = map + size - __pthread_tsd_size;
 	}
-	size += __pthread_tsd_size;
-	map = mmap(0, size, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON, -1, 0);
-	if (map == MAP_FAILED) return EAGAIN;
-	if (guard) mprotect(map, guard, PROT_NONE);
-
-	tsd = map + size - __pthread_tsd_size;
 	new = (void *)(tsd - sizeof *new - PAGE_SIZE%sizeof *new);
 	new->map_base = map;
 	new->map_size = size;
@@ -117,6 +123,7 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
 	new->tsd = (void *)tsd;
 	if (attr) new->detached = attr->_a_detach;
 	new->unblock_cancel = self->cancel;
+	new->canary = self->canary ^ (uintptr_t)&new;
 	stack = (void *)new;
 
 	__synccall_lock();
@@ -134,11 +141,3 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
 	*res = new;
 	return 0;
 }
-
-void pthread_exit(void *result)
-{
-	struct pthread *self = pthread_self();
-	struct __ptcb cb = { .__next = self->cancelbuf };
-	self->result = result;
-	__pthread_do_unwind(&cb);
-}