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-rw-r--r--sysdeps/unix/sysv/linux/timer_delete.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/timer_delete.c b/sysdeps/unix/sysv/linux/timer_delete.c
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+++ b/sysdeps/unix/sysv/linux/timer_delete.c
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+/* 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 <stdlib.h>
+#include <time.h>
+#include <sysdep.h>
+#include "kernel-posix-timers.h"
+
+
+#ifdef timer_delete_alias
+# define timer_delete timer_delete_alias
+#endif
+
+
+int
+timer_delete (timerid)
+     timer_t timerid;
+{
+#undef timer_delete
+  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);
+	}
+
+      /* Free the memory.  */
+      (void) free (kt);
+
+      return 0;
+    }
+
+  /* The kernel timer is not known or something else bad happened.
+     Return the error.  */
+  return -1;
+}