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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 14:32:36 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 14:32:36 -0700
commit57e8823548ad6e65d33b2153edeb18fb0edc20e6 (patch)
tree8cfc6fea89ec4e90c94b5764233ee2b2ed9cc54d /libc/sysdeps/linux/common/sigsuspend.c
parent9a737ab7a40984cfdfffd014562a220a3736a10f (diff)
cancellation support for a large amount of the required syscalls
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libc/sysdeps/linux/common/sigsuspend.c')
-rw-r--r--libc/sysdeps/linux/common/sigsuspend.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/common/sigsuspend.c b/libc/sysdeps/linux/common/sigsuspend.c
index 3648e76b5..789eeda89 100644
--- a/libc/sysdeps/linux/common/sigsuspend.c
+++ b/libc/sysdeps/linux/common/sigsuspend.c
@@ -11,27 +11,49 @@
#if defined __USE_POSIX
#include <signal.h>
+#undef sigsuspend
-extern __typeof(sigsuspend) __libc_sigsuspend;
+libc_hidden_proto(sigsuspend)
#ifdef __NR_rt_sigsuspend
# define __NR___rt_sigsuspend __NR_rt_sigsuspend
-static __inline__ _syscall2(int, __rt_sigsuspend, const sigset_t *, mask, size_t, size)
-int __libc_sigsuspend(const sigset_t * mask)
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# include <errno.h>
+# include <sysdep-cancel.h>
+
+/* Change the set of blocked signals to SET,
+ wait until a signal arrives, and restore the set of blocked signals. */
+int sigsuspend (const sigset_t *set)
+{
+ if (SINGLE_THREAD_P)
+ return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
+
+ int oldtype = LIBC_CANCEL_ASYNC ();
+
+ int result = INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8);
+
+ LIBC_CANCEL_RESET (oldtype);
+
+ return result;
+}
+# else
+static inline _syscall2(int, __rt_sigsuspend, const sigset_t *, mask, size_t, size);
+
+int sigsuspend(const sigset_t * mask)
{
return __rt_sigsuspend(mask, _NSIG / 8);
}
+# endif
#else
# define __NR___syscall_sigsuspend __NR_sigsuspend
static __inline__ _syscall3(int, __syscall_sigsuspend, int, a, unsigned long int, b,
unsigned long int, c)
-int __libc_sigsuspend(const sigset_t * set)
+int sigsuspend(const sigset_t * set)
{
return __syscall_sigsuspend(0, 0, set->__val[0]);
}
#endif
-weak_alias(__libc_sigsuspend,sigsuspend)
-libc_hidden_weak(sigsuspend)
+libc_hidden_def(sigsuspend)
#endif