summaryrefslogtreecommitdiff
path: root/linuxthreads/sysdeps/unix/sysv/linux/sigwait.c
diff options
context:
space:
mode:
Diffstat (limited to 'linuxthreads/sysdeps/unix/sysv/linux/sigwait.c')
-rw-r--r--linuxthreads/sysdeps/unix/sysv/linux/sigwait.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/sigwait.c b/linuxthreads/sysdeps/unix/sysv/linux/sigwait.c
new file mode 100644
index 0000000000..fdec09455a
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/sigwait.c
@@ -0,0 +1,88 @@
+/* Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <signal.h>
+#define __need_NULL
+#include <stddef.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+#include <bits/libc-lock.h>
+
+extern int __syscall_rt_sigtimedwait (const sigset_t *__unbounded, siginfo_t *__unbounded,
+ const struct timespec *__unbounded, size_t);
+
+
+/* Return any pending signal or wait for one for the given time. */
+static inline int
+do_sigwait (const sigset_t *set, int *sig)
+{
+ int ret;
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+#ifdef INTERNAL_SYSCALL
+ INTERNAL_SYSCALL_DECL (err);
+ ret = INTERNAL_SYSCALL (rt_sigtimedwait, err, 4, CHECK_SIGSET (set),
+ NULL, NULL, _NSIG / 8);
+ if (! INTERNAL_SYSCALL_ERROR_P (ret, err))
+ {
+ *sig = ret;
+ ret = 0;
+ }
+ else
+ ret = INTERNAL_SYSCALL_ERRNO (ret, err);
+#else
+ ret = INLINE_SYSCALL (rt_sigtimedwait, 4, CHECK_SIGSET (set),
+ NULL, NULL, _NSIG / 8);
+ if (ret != -1)
+ {
+ *sig = ret;
+ ret = 0;
+ }
+ else
+ ret = errno;
+#endif
+
+ return ret;
+}
+
+#ifndef SHARED
+weak_extern (__pthread_sigwait)
+#endif
+
+int
+__sigwait (set, sig)
+ const sigset_t *set;
+ int *sig;
+{
+#ifndef NOT_IN_libc
+ return __libc_maybe_call2 (pthread_sigwait, (set, sig),
+ do_sigwait (set, sig));
+#else
+ return do_sigwait (set, sig);
+#endif
+}
+libc_hidden_def (__sigwait)
+weak_alias (__sigwait, sigwait)
+strong_alias (__sigwait, __libc_sigwait)
+
+/* Cancellation is handled in __pthread_sigwait. */
+LIBC_CANCEL_HANDLED ();