1 files changed, 57 insertions, 0 deletions
diff --git a/cpukit/posix/src/timerinserthelper.c b/cpukit/posix/src/timerinserthelper.c
new file mode 100644
index 0000000000..a2ced7a79b
--- /dev/null
+++ b/cpukit/posix/src/timerinserthelper.c
@@ -0,0 +1,57 @@
+/*
+ *  Helper routine for POSIX timers
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <time.h>
+
+#include <rtems/system.h>
+#include <rtems/seterr.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/watchdog.h>
+#include <rtems/posix/timer.h>
+#include <rtems/posix/ptimer.h>
+
+bool _POSIX_Timer_Insert_helper(
+  Watchdog_Control               *timer,
+  Watchdog_Interval               ticks,
+  Objects_Id                      id,
+  Watchdog_Service_routine_entry  TSR,
+  void                           *arg
+)
+{
+  ISR_Level            level;
+
+  (void) _Watchdog_Remove( timer );
+  _ISR_Disable( level );
+
+    /*
+     *  Check to see if the watchdog has just been inserted by a
+     *  higher priority interrupt.  If so, abandon this insert.
+     */
+    if ( timer->state != WATCHDOG_INACTIVE ) {
+      _ISR_Enable( level );
+      return false;
+    }
+
+    /*
+     *  OK.  Now we now the timer was not rescheduled by an interrupt
+     *  so we can atomically initialize it as in use.
+     */
+    _Watchdog_Initialize( timer, TSR, id, arg );
+    _Watchdog_Insert_ticks( timer, ticks );
+  _ISR_Enable( level );
+  return true;
+}