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authorRoland McGrath <roland@hack.frob.com>2014-07-07 09:28:38 -0700
committerRoland McGrath <roland@hack.frob.com>2014-07-07 09:28:38 -0700
commit08192659bbeae149e7cb1f4c43547257f7099bb0 (patch)
tree9f602a4e9f0aefdb06bc15a76be46e958e91a58f /nptl/sysdeps/unix/sysv/linux/timer_routines.c
parent96baf6ffc57b811bbc424a1fc72ef77dd56d7a18 (diff)
downloadglibc-08192659bbeae149e7cb1f4c43547257f7099bb0.tar.gz
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Get rid of nptl/sysdeps/ entirely!
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/timer_routines.c')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/timer_routines.c196
1 files changed, 0 insertions, 196 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/timer_routines.c b/nptl/sysdeps/unix/sysv/linux/timer_routines.c
deleted file mode 100644
index 4ac9bbe896..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/timer_routines.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/* Copyright (C) 2003-2014 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 <setjmp.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <sysdep.h>
-#include <nptl/pthreadP.h>
-#include "kernel-posix-timers.h"
-
-
-/* List of active SIGEV_THREAD timers.  */
-struct timer *__active_timer_sigev_thread;
-/* Lock for the __active_timer_sigev_thread.  */
-pthread_mutex_t __active_timer_sigev_thread_lock = PTHREAD_MUTEX_INITIALIZER;
-
-
-struct thread_start_data
-{
-  void (*thrfunc) (sigval_t);
-  sigval_t sival;
-};
-
-
-/* Helper thread to call the user-provided function.  */
-static void *
-timer_sigev_thread (void *arg)
-{
-  /* The parent thread has all signals blocked.  This is a bit
-     surprising for user code, although valid.  We unblock all
-     signals.  */
-  sigset_t ss;
-  sigemptyset (&ss);
-  INTERNAL_SYSCALL_DECL (err);
-  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8);
-
-  struct thread_start_data *td = (struct thread_start_data *) arg;
-
-  void (*thrfunc) (sigval_t) = td->thrfunc;
-  sigval_t sival = td->sival;
-
-  /* The TD object was allocated in timer_helper_thread.  */
-  free (td);
-
-  /* Call the user-provided function.  */
-  thrfunc (sival);
-
-  return NULL;
-}
-
-
-/* Helper function to support starting threads for SIGEV_THREAD.  */
-static void *
-timer_helper_thread (void *arg)
-{
-  /* Wait for the SIGTIMER signal, allowing the setXid signal, and
-     none else.  */
-  sigset_t ss;
-  sigemptyset (&ss);
-  __sigaddset (&ss, SIGTIMER);
-
-  /* Endless loop of waiting for signals.  The loop is only ended when
-     the thread is canceled.  */
-  while (1)
-    {
-      siginfo_t si;
-
-      /* sigwaitinfo cannot be used here, since it deletes
-	 SIGCANCEL == SIGTIMER from the set.  */
-
-      int oldtype = LIBC_CANCEL_ASYNC ();
-
-      /* XXX The size argument hopefully will have to be changed to the
-	 real size of the user-level sigset_t.  */
-      int result = INLINE_SYSCALL (rt_sigtimedwait, 4, &ss, &si, NULL,
-				   _NSIG / 8);
-
-      LIBC_CANCEL_RESET (oldtype);
-
-      if (result > 0)
-	{
-	  if (si.si_code == SI_TIMER)
-	    {
-	      struct timer *tk = (struct timer *) si.si_ptr;
-
-	      /* Check the timer is still used and will not go away
-		 while we are reading the values here.  */
-	      pthread_mutex_lock (&__active_timer_sigev_thread_lock);
-
-	      struct timer *runp = __active_timer_sigev_thread;
-	      while (runp != NULL)
-		if (runp == tk)
-		  break;
-		else
-		  runp = runp->next;
-
-	      if (runp != NULL)
-		{
-		  struct thread_start_data *td = malloc (sizeof (*td));
-
-		  /* There is not much we can do if the allocation fails.  */
-		  if (td != NULL)
-		    {
-		      /* This is the signal we are waiting for.  */
-		      td->thrfunc = tk->thrfunc;
-		      td->sival = tk->sival;
-
-		      pthread_t th;
-		      (void) pthread_create (&th, &tk->attr,
-					     timer_sigev_thread, td);
-		    }
-		}
-
-	      pthread_mutex_unlock (&__active_timer_sigev_thread_lock);
-	    }
-	  else if (si.si_code == SI_TKILL)
-	    /* The thread is canceled.  */
-	    pthread_exit (NULL);
-	}
-    }
-}
-
-
-/* Control variable for helper thread creation.  */
-pthread_once_t __helper_once attribute_hidden;
-
-
-/* TID of the helper thread.  */
-pid_t __helper_tid attribute_hidden;
-
-
-/* Reset variables so that after a fork a new helper thread gets started.  */
-static void
-reset_helper_control (void)
-{
-  __helper_once = PTHREAD_ONCE_INIT;
-  __helper_tid = 0;
-}
-
-
-void
-attribute_hidden
-__start_helper_thread (void)
-{
-  /* The helper thread needs only very little resources
-     and should go away automatically when canceled.  */
-  pthread_attr_t attr;
-  (void) pthread_attr_init (&attr);
-  (void) pthread_attr_setstacksize (&attr, __pthread_get_minstack (&attr));
-
-  /* Block all signals in the helper thread but SIGSETXID.  To do this
-     thoroughly we temporarily have to block all signals here.  The
-     helper can lose wakeups if SIGCANCEL is not blocked throughout,
-     but sigfillset omits it SIGSETXID.  So, we add SIGCANCEL back
-     explicitly here.  */
-  sigset_t ss;
-  sigset_t oss;
-  sigfillset (&ss);
-  __sigaddset (&ss, SIGCANCEL);
-  INTERNAL_SYSCALL_DECL (err);
-  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8);
-
-  /* Create the helper thread for this timer.  */
-  pthread_t th;
-  int res = pthread_create (&th, &attr, timer_helper_thread, NULL);
-  if (res == 0)
-    /* We managed to start the helper thread.  */
-    __helper_tid = ((struct pthread *) th)->tid;
-
-  /* Restore the signal mask.  */
-  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL,
-		    _NSIG / 8);
-
-  /* No need for the attribute anymore.  */
-  (void) pthread_attr_destroy (&attr);
-
-  /* We have to make sure that after fork()ing a new helper thread can
-     be created.  */
-  pthread_atfork (NULL, NULL, reset_helper_control);
-}