mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-05 21:00:05 +00:00
8dd1e49452
1999-10-26 Ulrich Drepper <drepper@cygnus.com> * restart.h (suspend_with_cancellation): Rewrite as a macro. * condvar.c (pthread_cond_timedwait_relative): Don't mark as inline.
59 lines
2.5 KiB
C
59 lines
2.5 KiB
C
/* Linuxthreads - a simple clone()-based implementation of Posix */
|
|
/* threads for Linux. */
|
|
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
|
|
/* */
|
|
/* This program is free software; you can redistribute it and/or */
|
|
/* modify it under the terms of the GNU Library General Public License */
|
|
/* as published by the Free Software Foundation; either version 2 */
|
|
/* of the License, or (at your option) any later version. */
|
|
/* */
|
|
/* This program 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 Library General Public License for more details. */
|
|
|
|
#include <signal.h>
|
|
|
|
/* Primitives for controlling thread execution */
|
|
|
|
static inline void restart(pthread_descr th)
|
|
{
|
|
kill(th->p_pid, __pthread_sig_restart);
|
|
}
|
|
|
|
static inline void suspend(pthread_descr self)
|
|
{
|
|
sigset_t mask;
|
|
|
|
sigprocmask(SIG_SETMASK, NULL, &mask); /* Get current signal mask */
|
|
sigdelset(&mask, __pthread_sig_restart); /* Unblock the restart signal */
|
|
do {
|
|
self->p_signal = 0;
|
|
sigsuspend(&mask); /* Wait for signal */
|
|
} while (self->p_signal !=__pthread_sig_restart );
|
|
}
|
|
|
|
#define suspend_with_cancellation(self) \
|
|
{ \
|
|
sigset_t mask; \
|
|
sigjmp_buf jmpbuf; \
|
|
\
|
|
sigprocmask(SIG_SETMASK, NULL, &mask); /* Get current signal mask */ \
|
|
sigdelset(&mask, __pthread_sig_restart); /* Unblock the restart signal */ \
|
|
/* No need to save the signal mask, we'll restore it ourselves */ \
|
|
if (sigsetjmp(jmpbuf, 0) == 0) { \
|
|
self->p_cancel_jmp = &jmpbuf; \
|
|
if (! (self->p_canceled \
|
|
&& self->p_cancelstate == PTHREAD_CANCEL_ENABLE)) { \
|
|
do { \
|
|
self->p_signal = 0; \
|
|
sigsuspend(&mask); /* Wait for a signal */ \
|
|
} while (self->p_signal != __pthread_sig_restart); \
|
|
} \
|
|
self->p_cancel_jmp = NULL; \
|
|
} else { \
|
|
sigaddset(&mask, __pthread_sig_restart); /* Reblock the restart signal */ \
|
|
sigprocmask(SIG_SETMASK, &mask, NULL); \
|
|
} \
|
|
}
|