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diff --git a/cpukit/include/rtems/posix/timer.h b/cpukit/include/rtems/posix/timer.h
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+/**
+ * @file
+ *
+ * @brief POSIX Timers Internal Support
+ *
+ * This include files defines the internal support for implementation of
+ * POSIX Timers.
+ */
+
+/*
+ * COPYRIGHT (c) 1989-2011.
+ * 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.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_POSIX_TIMER_H
+#define _RTEMS_POSIX_TIMER_H
+
+#include <rtems/score/object.h>
+#include <rtems/score/watchdog.h>
+
+#include <pthread.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup POSIX_INTERNAL_TIMERS POSIX Timer Private Support
+ *
+ * @ingroup POSIXAPI
+ */
+/**@{*/
+
+/*
+ * Data for a timer
+ */
+typedef struct {
+ Objects_Control Object;
+ Watchdog_Control Timer; /* Internal Timer */
+ pthread_t thread_id; /* Thread identifier */
+ char state; /* State of the timer */
+ struct sigevent inf; /* Information associated to the timer */
+ struct itimerspec timer_data; /* Timing data of the timer */
+ uint32_t ticks; /* Number of ticks of the initialization */
+ uint32_t overrun; /* Number of expirations of the timer */
+ struct timespec time; /* Time at which the timer was started */
+} POSIX_Timer_Control;
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */