projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 09402f5b UD |
1 | /* Copyright (C) 2003 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public License as | |
| 7 | published by the Free Software Foundation; either version 2.1 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 18 | Boston, MA 02111-1307, USA. */ | |
| 19 | ||
| 20 | #include <setjmp.h> | |
| 21 | #include <signal.h> | |
| 22 | #include <stdbool.h> | |
| 23 | #include <sysdep.h> | |
| 24 | #include <kernel-features.h> | |
| 25 | #include "kernel-posix-timers.h" | |
| 26 | ||
| 27 | ||
| 28 | #ifdef __NR_timer_create | |
| 29 | /* Helper thread to call the user-provided function. */ | |
| 30 | static void * | |
| 31 | timer_sigev_thread (void *arg) | |
| 32 | { | |
| 33 | struct timer *tk = (struct timer *) arg; | |
| 34 | ||
| 35 | /* Call the user-provided function. */ | |
| 36 | tk->thrfunc (tk->sival); | |
| 37 | ||
| 38 | return NULL; | |
| 39 | } | |
| 40 | ||
| 41 | ||
| 42 | /* Helper function to support starting threads for SIGEV_THREAD. */ | |
| 43 | void * | |
| 44 | attribute_hidden | |
| 45 | __timer_helper_thread (void *arg) | |
| 46 | { | |
| 47 | /* Block all signals. */ | |
| 48 | sigset_t ss; | |
| 49 | ||
| 50 | sigfillset (&ss); | |
| 51 | (void) pthread_sigmask (SIG_BLOCK, &ss, NULL); | |
| 52 | ||
| 53 | struct timer *tk = (struct timer *) arg; | |
| 54 | ||
| 55 | /* Synchronize with the parent. */ | |
| 56 | (void) pthread_barrier_wait (&tk->bar); | |
| 57 | ||
| 58 | /* We will only wait for the signal the kernel will send. */ | |
| 59 | sigemptyset (&ss); | |
| 60 | sigaddset (&ss, TIMER_SIG); | |
| 61 | ||
| 62 | /* Endless loop of waiting for signals. The loop is only ended when | |
| 63 | the thread is canceled. */ | |
| 64 | while (1) | |
| 65 | { | |
| 66 | siginfo_t si; | |
| 67 | ||
| 68 | if (sigwaitinfo (&ss, &si) > 0 && si.si_timerid == tk->ktimerid) | |
| 69 | { | |
| 70 | /* That the signal we are waiting for. */ | |
| 71 | pthread_t th; | |
| 72 | (void) pthread_create (&th, &tk->attr, timer_sigev_thread, arg); | |
| 73 | } | |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | #endif | |
| 78 | ||
| 79 | #ifndef __ASSUME_POSIX_TIMERS | |
| 80 | # include <nptl/sysdeps/pthread/timer_routines.c> | |
| 81 | #endif |