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-rw-r--r--linuxthreads/sysdeps/pthread/timer_delete.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/pthread/timer_delete.c b/linuxthreads/sysdeps/pthread/timer_delete.c
new file mode 100644
index 0000000000..9e83ae1ab7
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/timer_delete.c
@@ -0,0 +1,69 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <time.h>
+
+#include "posix-timer.h"
+
+
+/* Delete timer TIMERID.  */
+int
+timer_delete (timerid)
+     timer_t timerid;
+{
+  struct timer_node *timer;
+  int retval = -1;
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  timer = timer_id2ptr (timerid);
+  if (timer == NULL)
+    /* Invalid timer ID or the timer is not in use.  */
+    errno = EINVAL;
+  else
+    {
+      if (timer->armed)
+	{
+	  struct thread_node *thread = timer->thread;
+	  assert (thread != NULL);
+
+	  /* If thread is cancelled while waiting for handler to terminate,
+	     the mutex is unlocked and timer_delete is aborted.  */
+	  pthread_cleanup_push (__timer_mutex_cancel_handler, &__timer_mutex);
+
+	    /* If timer is currently being serviced, wait for it to finish.  */
+	    while (thread->current_timer == timer)
+	      pthread_cond_wait (&thread->cond, &__timer_mutex);
+
+	    pthread_cleanup_pop (0);
+        }
+
+      /* Remove timer from whatever queue it may be on and deallocate it.  */
+      list_unlink (&timer->links);
+      __timer_dealloc (timer);
+      retval = 0;
+    }
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  return retval;
+}