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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | /* Copyright (C) 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; see the file COPYING.LIB. If not, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <stdlib.h> #include <time.h> #include <sysdep.h> #include <bits/kernel-features.h> #include "kernel-posix-timers.h" #ifdef __NR_timer_delete # ifndef __ASSUME_POSIX_TIMERS static int compat_timer_delete (timer_t timerid); # define timer_delete static compat_timer_delete # include <nptl/sysdeps/pthread/timer_delete.c> # undef timer_delete # endif # ifdef timer_delete_alias # define timer_delete timer_delete_alias # endif int timer_delete ( timer_t timerid) { # undef timer_delete # ifndef __ASSUME_POSIX_TIMERS if (__no_posix_timers >= 0) # endif { struct timer *kt = (struct timer *) timerid; /* Delete the kernel timer object. */ int res = INLINE_SYSCALL (timer_delete, 1, kt->ktimerid); if (res == 0) { if (kt->sigev_notify == SIGEV_THREAD) { /* Remove the timer from the list. */ pthread_mutex_lock (&__active_timer_sigev_thread_lock); if (__active_timer_sigev_thread == kt) __active_timer_sigev_thread = kt->next; else { struct timer *prevp = __active_timer_sigev_thread; while (prevp->next != NULL) if (prevp->next == kt) { prevp->next = kt->next; break; } else prevp = prevp->next; } pthread_mutex_unlock (&__active_timer_sigev_thread_lock); } # ifndef __ASSUME_POSIX_TIMERS /* We know the syscall support is available. */ __no_posix_timers = 1; # endif /* Free the memory. */ (void) free (kt); return 0; } /* The kernel timer is not known or something else bad happened. Return the error. */ # ifndef __ASSUME_POSIX_TIMERS if (errno != ENOSYS) { __no_posix_timers = 1; # endif return -1; # ifndef __ASSUME_POSIX_TIMERS } __no_posix_timers = -1; # endif } # ifndef __ASSUME_POSIX_TIMERS return compat_timer_delete (timerid); # endif } #else # ifdef timer_delete_alias # define timer_delete timer_delete_alias # endif /* The new system calls are not available. Use the userlevel implementation. */ # include <nptl/sysdeps/pthread/timer_delete.c> #endif |