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-rw-r--r--signal/signal.h39
1 files changed, 26 insertions, 13 deletions
diff --git a/signal/signal.h b/signal/signal.h
index f0cd50e8e3..8263d3a84f 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -142,8 +142,11 @@ extern void psignal (int __sig, __const char *__s) __THROW;
BSD definition defines the argument as a mask of the signal, while
the more modern interface in X/Open defines it as the signal
number. We go with the BSD version unless the user explicitly
- selects the X/Open version. */
-extern int __sigpause (int __sig_or_mask, int __is_sig) __THROW;
+ selects the X/Open version.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int __sigpause (int __sig_or_mask, int __is_sig);
#ifdef __USE_BSD
/* Set the mask of blocked signals to MASK,
@@ -153,7 +156,7 @@ extern int sigpause (int __mask) __THROW;
#else
# ifdef __USE_XOPEN
# ifdef __GNUC__
-extern int sigpause (int __sig) __THROW __asm__ ("__xpg_sigpause");
+extern int sigpause (int __sig) __asm__ ("__xpg_sigpause");
# endif
/* Remove a signal from the signal mask and suspend the process. */
# define sigpause(sig) __sigpause ((sig), 1)
@@ -242,8 +245,11 @@ extern int sigprocmask (int __how, __const sigset_t *__restrict __set,
sigset_t *__restrict __oset) __THROW;
/* Change the set of blocked signals to SET,
- wait until a signal arrives, and restore the set of blocked signals. */
-extern int sigsuspend (__const sigset_t *__set) __THROW;
+ wait until a signal arrives, and restore the set of blocked signals.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int sigsuspend (__const sigset_t *__set);
/* Get and/or set the action for signal SIG. */
extern int sigaction (int __sig, __const struct sigaction *__restrict __act,
@@ -253,21 +259,28 @@ extern int sigaction (int __sig, __const struct sigaction *__restrict __act,
extern int sigpending (sigset_t *__set) __THROW;
-/* Select any of pending signals from SET or wait for any to arrive. */
-extern int sigwait (__const sigset_t *__restrict __set, int *__restrict __sig)
- __THROW;
+/* Select any of pending signals from SET or wait for any to arrive.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int sigwait (__const sigset_t *__restrict __set, int *__restrict __sig);
# ifdef __USE_POSIX199309
-/* Select any of pending signals from SET and place information in INFO. */
+/* Select any of pending signals from SET and place information in INFO.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
extern int sigwaitinfo (__const sigset_t *__restrict __set,
- siginfo_t *__restrict __info) __THROW;
+ siginfo_t *__restrict __info);
/* Select any of pending signals from SET and place information in INFO.
- Wait the time specified by TIMEOUT if no signal is pending. */
+ Wait the time specified by TIMEOUT if no signal is pending.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
extern int sigtimedwait (__const sigset_t *__restrict __set,
siginfo_t *__restrict __info,
- __const struct timespec *__restrict __timeout)
- __THROW;
+ __const struct timespec *__restrict __timeout);
/* Send signal SIG to the process PID. Associate data in VAL with the
signal. */