diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/timer_create.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/timer_create.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/sysdeps/unix/sysv/linux/timer_create.c b/sysdeps/unix/sysv/linux/timer_create.c deleted file mode 100644 index 48a703c065..0000000000 --- a/sysdeps/unix/sysv/linux/timer_create.c +++ /dev/null @@ -1,176 +0,0 @@ -/* Copyright (C) 2003-2017 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 <pthread.h> -#include <signal.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <sysdep.h> -#include <internaltypes.h> -#include <nptl/pthreadP.h> -#include "kernel-posix-timers.h" -#include "kernel-posix-cpu-timers.h" - - -#ifdef timer_create_alias -# define timer_create timer_create_alias -#endif - - -int -timer_create (clockid_t clock_id, struct sigevent *evp, timer_t *timerid) -{ -#undef timer_create - { - clockid_t syscall_clockid = (clock_id == CLOCK_PROCESS_CPUTIME_ID - ? MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED) - : clock_id == CLOCK_THREAD_CPUTIME_ID - ? MAKE_THREAD_CPUCLOCK (0, CPUCLOCK_SCHED) - : clock_id); - - /* If the user wants notification via a thread we need to handle - this special. */ - if (evp == NULL - || __builtin_expect (evp->sigev_notify != SIGEV_THREAD, 1)) - { - struct sigevent local_evp; - - /* We avoid allocating too much memory by basically - using struct timer as a derived class with the - first two elements being in the superclass. We only - need these two elements here. */ - struct timer *newp = (struct timer *) malloc (offsetof (struct timer, - thrfunc)); - if (newp == NULL) - /* No more memory. */ - return -1; - - if (evp == NULL) - { - /* The kernel has to pass up the timer ID which is a - userlevel object. Therefore we cannot leave it up to - the kernel to determine it. */ - local_evp.sigev_notify = SIGEV_SIGNAL; - local_evp.sigev_signo = SIGALRM; - local_evp.sigev_value.sival_ptr = newp; - - evp = &local_evp; - } - - kernel_timer_t ktimerid; - int retval = INLINE_SYSCALL (timer_create, 3, syscall_clockid, evp, - &ktimerid); - - if (retval != -1) - { - newp->sigev_notify = (evp != NULL - ? evp->sigev_notify : SIGEV_SIGNAL); - newp->ktimerid = ktimerid; - - *timerid = (timer_t) newp; - } - else - { - /* Cannot allocate the timer, fail. */ - free (newp); - retval = -1; - } - - return retval; - } - else - { - /* Create the helper thread. */ - pthread_once (&__helper_once, __start_helper_thread); - if (__helper_tid == 0) - { - /* No resources to start the helper thread. */ - __set_errno (EAGAIN); - return -1; - } - - struct timer *newp; - newp = (struct timer *) malloc (sizeof (struct timer)); - if (newp == NULL) - return -1; - - /* Copy the thread parameters the user provided. */ - newp->sival = evp->sigev_value; - newp->thrfunc = evp->sigev_notify_function; - newp->sigev_notify = SIGEV_THREAD; - - /* We cannot simply copy the thread attributes since the - implementation might keep internal information for - each instance. */ - (void) pthread_attr_init (&newp->attr); - if (evp->sigev_notify_attributes != NULL) - { - struct pthread_attr *nattr; - struct pthread_attr *oattr; - - nattr = (struct pthread_attr *) &newp->attr; - oattr = (struct pthread_attr *) evp->sigev_notify_attributes; - - nattr->schedparam = oattr->schedparam; - nattr->schedpolicy = oattr->schedpolicy; - nattr->flags = oattr->flags; - nattr->guardsize = oattr->guardsize; - nattr->stackaddr = oattr->stackaddr; - nattr->stacksize = oattr->stacksize; - } - - /* In any case set the detach flag. */ - (void) pthread_attr_setdetachstate (&newp->attr, - PTHREAD_CREATE_DETACHED); - - /* Create the event structure for the kernel timer. */ - struct sigevent sev = - { .sigev_value.sival_ptr = newp, - .sigev_signo = SIGTIMER, - .sigev_notify = SIGEV_SIGNAL | SIGEV_THREAD_ID, - ._sigev_un = { ._pad = { [0] = __helper_tid } } }; - - /* Create the timer. */ - INTERNAL_SYSCALL_DECL (err); - int res; - res = INTERNAL_SYSCALL (timer_create, err, 3, - syscall_clockid, &sev, &newp->ktimerid); - if (! INTERNAL_SYSCALL_ERROR_P (res, err)) - { - /* Add to the queue of active timers with thread - delivery. */ - pthread_mutex_lock (&__active_timer_sigev_thread_lock); - newp->next = __active_timer_sigev_thread; - __active_timer_sigev_thread = newp; - pthread_mutex_unlock (&__active_timer_sigev_thread_lock); - - *timerid = (timer_t) newp; - return 0; - } - - /* Free the resources. */ - free (newp); - - __set_errno (INTERNAL_SYSCALL_ERRNO (res, err)); - - return -1; - } - } -} |