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authorRoland McGrath <roland@hack.frob.com>2014-06-12 13:48:47 -0700
committerRoland McGrath <roland@hack.frob.com>2014-06-12 13:48:47 -0700
commit463dc947b4f9bc4137c9919ee72b896403926474 (patch)
treeaaade6746cade247ea83c99c3057f6f08e1eb6a9 /sysdeps/pthread/timer_gettime.c
parente876b09076d859836f948691dee5a1e3b956256e (diff)
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Get rid of nptl/sysdeps/pthread/ subdirectory
Diffstat (limited to 'sysdeps/pthread/timer_gettime.c')
-rw-r--r--sysdeps/pthread/timer_gettime.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/sysdeps/pthread/timer_gettime.c b/sysdeps/pthread/timer_gettime.c
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+++ b/sysdeps/pthread/timer_gettime.c
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+/* Copyright (C) 2000-2014 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 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 <time.h>
+
+#include "posix-timer.h"
+
+
+/* Get current value of timer TIMERID and store it in VLAUE.  */
+int
+timer_gettime (timerid, value)
+     timer_t timerid;
+     struct itimerspec *value;
+{
+  struct timer_node *timer;
+  struct timespec now, expiry;
+  int retval = -1, armed = 0, valid;
+  clock_t clock = 0;
+
+  pthread_mutex_lock (&__timer_mutex);
+
+  timer = timer_id2ptr (timerid);
+  valid = timer_valid (timer);
+
+  if (valid) {
+    armed = timer->armed;
+    expiry = timer->expirytime;
+    clock = timer->clock;
+    value->it_interval = timer->value.it_interval;
+  }
+
+  pthread_mutex_unlock (&__timer_mutex);
+
+  if (valid)
+    {
+      if (armed)
+	{
+	  clock_gettime (clock, &now);
+	  if (timespec_compare (&now, &expiry) < 0)
+	    timespec_sub (&value->it_value, &expiry, &now);
+	  else
+	    {
+	      value->it_value.tv_sec = 0;
+	      value->it_value.tv_nsec = 0;
+	    }
+	}
+      else
+	{
+	  value->it_value.tv_sec = 0;
+	  value->it_value.tv_nsec = 0;
+	}
+
+      retval = 0;
+    }
+  else
+    __set_errno (EINVAL);
+
+  return retval;
+}