X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fthread%2Fpthread_create.c;h=7cd57d8e8dbaa390d8967ff620cf4a4a51f64f7a;hp=7494a486b2b3a4d4b4fee7c05d64538cb51e9eed;hb=3df3d4f5127a15c1237006d22f948b430f9dbe7e;hpb=29fae65780f4c5ccda3758828da7a83073297ccc

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 7494a486..7cd57d8e 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -1,5 +1,10 @@
 #include "pthread_impl.h"
 
+#ifdef __pthread_unwind_next
+#undef __pthread_unwind_next
+#define __pthread_unwind_next __pthread_unwind_next_3
+#endif
+
 void __pthread_unwind_next(struct __ptcb *cb)
 {
 	int i, j, not_finished;
@@ -8,7 +13,7 @@ void __pthread_unwind_next(struct __ptcb *cb)
 	if (cb->__next) longjmp((void *)cb->__next->__jb, 1);
 
 	self = pthread_self();
-	if (self->cancel) self->result = PTHREAD_CANCELLED;
+	if (self->cancel) self->result = PTHREAD_CANCELED;
 
 	LOCK(&self->exitlock);
 
@@ -32,35 +37,40 @@ void __pthread_unwind_next(struct __ptcb *cb)
 		exit(0);
 
 	if (self->detached && self->map_base) {
-		syscall4(__NR_rt_sigprocmask, SIG_BLOCK, (long)(uint64_t[1]){-1},0,8);
+		syscall(__NR_rt_sigprocmask, SIG_BLOCK, (long)(uint64_t[1]){-1},0,8);
 		__unmapself(self->map_base, self->map_size);
 	}
 
-	__syscall_exit(0);
+	syscall(SYS_exit, 0);
 }
 
 static void docancel(struct pthread *self)
 {
 	struct __ptcb cb = { .__next = self->cancelbuf };
+	self->canceldisable = 1;
+	self->cancelasync = 0;
 	__pthread_unwind_next(&cb);
 }
 
 static void cancel_handler(int sig, siginfo_t *si, void *ctx)
 {
 	struct pthread *self = __pthread_self();
-	if (si->si_code > 0 || si->si_pid != self->pid) return;
-	self->cancel = 1;
-	if (self->canceldisable || (!self->cancelasync && !self->cancelpoint))
+	if (!self->cancel) {
+		if (si->si_code == SI_TIMER && libc.sigtimer)
+			libc.sigtimer(sig, si, ctx);
 		return;
-	docancel(self);
+	}
+	if (self->canceldisable) return;
+	if (self->cancelasync || (self->cancelpoint==1 && PC_AT_SYS(ctx)))
+		docancel(self);
 }
 
 static void cancelpt(int x)
 {
 	struct pthread *self = __pthread_self();
 	if (self->canceldisable) return;
-	self->cancelpoint = x;
-	if (self->cancel) docancel(self);
+	if ((self->cancelpoint+=x)==1 && x>=0 && self->cancel)
+		docancel(self);
 }
 
 /* "rsyscall" is a mechanism by which a thread can synchronously force all
@@ -91,7 +101,7 @@ static void rsyscall_handler(int sig, siginfo_t *si, void *ctx)
 		return;
 	}
 
-	if (syscall6(rs.nr, rs.arg[0], rs.arg[1], rs.arg[2],
+	if (syscall(rs.nr, rs.arg[0], rs.arg[1], rs.arg[2],
 		rs.arg[3], rs.arg[4], rs.arg[5]) < 0 && !rs.err) rs.err=errno;
 
 	a_inc(&rs.cnt);
@@ -140,7 +150,7 @@ static int rsyscall(int nr, long a, long b, long c, long d, long e, long f)
 	while((i=rs.cnt)) __wait(&rs.cnt, 0, i, 1);
 
 	if (rs.err) errno = rs.err, ret = -1;
-	else ret = syscall6(nr, a, b, c, d, e, f);
+	else ret = syscall(nr, a, b, c, d, e, f);
 
 	UNLOCK(&rs.lock);
 	return ret;
@@ -165,6 +175,12 @@ static void init_threads()
 static int start(void *p)
 {
 	struct pthread *self = p;
+	if (self->unblock_cancel) {
+		sigset_t set;
+		sigemptyset(&set);
+		sigaddset(&set, SIGCANCEL);
+		__libc_sigprocmask(SIG_UNBLOCK, &set, 0);
+	}
 	pthread_exit(self->start(self->start_arg));
 	return 0;
 }
@@ -209,6 +225,7 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
 	new->tsd = (void *)tsd;
 	new->detached = attr->_a_detach;
 	new->attr = *attr;
+	new->unblock_cancel = self->cancel;
 	memcpy(new->tlsdesc, self->tlsdesc, sizeof new->tlsdesc);
 	new->tlsdesc[1] = (uintptr_t)new;
 	stack = (void *)((uintptr_t)new-1 & ~(uintptr_t)15);