mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 02:40:08 +00:00
ddbf7fef45
1998-07-29 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/dl-sysdep.c (__lseek): New function. (__getpid): New function. (abort): New function. * nis/nis_cache2_xdr.c: Removed.
58 lines
2.2 KiB
C
58 lines
2.2 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 );
|
|
}
|
|
|
|
static inline void suspend_with_cancellation(pthread_descr 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);
|
|
}
|
|
}
|