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(sigmask) [POSIX_SIGNALS]: Always define our own

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version that returns a sigset_t.
(sigpause) [POSIX_SIGNALS]: Unconditionally define in terms of
sigsuspend.  Don't redefine SIGEMPTYMASK.
(sys_sigpause): Don't declare.
(temp_mask): Don't declare.
This commit is contained in:
Andreas Schwab 1998-02-20 13:01:10 +00:00
parent c639b0e327
commit 47b682b73c
1 changed files with 7 additions and 13 deletions
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20
src/syssignal.h
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@ -30,11 +30,13 @@ Boston, MA 02111-1307, USA. */
#define SIGEMPTYMASK (empty_mask)
#define SIGFULLMASK (full_mask)
extern sigset_t empty_mask, full_mask, temp_mask;
extern sigset_t empty_mask, full_mask;
/* POSIX pretty much destroys any possibility of writing sigmask as a
macro in standard C. */
#ifndef sigmask
macro in standard C. We always define our own version because the
predefined macro in Glibc 2.1 is only provided for compatility for old
programs that use int as signal mask type. */
#undef sigmask
#ifdef __GNUC__
#define sigmask(SIG) \
({ \
@ -49,15 +51,8 @@ extern sigset_t sys_sigmask ();
#endif /* ! defined (__GNUC__) */
#endif
#ifndef sigpause
#define sigpause(SIG) sys_sigpause (SIG)
#else
/* If sigpause is predefined, with POSIX_SIGNALS,
let's assume it needs this kind of argument.
This is true for Glibc 2.1. */
#undef SIGEMPTYMASK
#define SIGEMPTYMASK sigmask (0)
#endif
#undef sigpause
#define sigpause(MASK) sigsuspend (&(MASK))
#define sigblock(SIG) sys_sigblock (SIG)
#define sigunblock(SIG) sys_sigunblock (SIG)
@ -74,7 +69,6 @@ extern sigset_t sys_sigmask ();
typedef RETSIGTYPE (*signal_handler_t) (/*int*/);
signal_handler_t sys_signal (/*int signal_number, signal_handler_t action*/);
int sys_sigpause (/*sigset_t new_mask*/);
sigset_t sys_sigblock (/*sigset_t new_mask*/);
sigset_t sys_sigunblock (/*sigset_t new_mask*/);
sigset_t sys_sigsetmask (/*sigset_t new_mask*/);