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diff --git a/perform/sio_timer.h b/perform/sio_timer.h
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef SIO_TIMER__
+#define SIO_TIMER__
+
+#include "hdf5.h"
+
+#if defined(H5_TIME_WITH_SYS_TIME)
+#   include <sys/time.h>
+#   include <time.h>
+#elif defined(H5_HAVE_SYS_TIME_H)
+#   include <sys/time.h>
+#else
+#   include <time.h>
+#endif
+
+/* The different types of timers we can have */
+typedef enum timer_type_ {
+    HDF5_FILE_OPENCLOSE,
+    HDF5_DATASET_CREATE,
+    HDF5_MPI_WRITE,
+    HDF5_MPI_READ,
+    HDF5_FILE_READ_OPEN,
+    HDF5_FILE_READ_CLOSE,
+    HDF5_FILE_WRITE_OPEN,
+    HDF5_FILE_WRITE_CLOSE,
+    HDF5_FINE_WRITE_FIXED_DIMS,
+    HDF5_FINE_READ_FIXED_DIMS,
+    HDF5_GROSS_WRITE_FIXED_DIMS,
+    HDF5_GROSS_READ_FIXED_DIMS,
+    HDF5_RAW_WRITE_FIXED_DIMS,
+    HDF5_RAW_READ_FIXED_DIMS,
+    NUM_TIMERS
+} timer_type;
+
+
+/* Miscellaneous identifiers */
+enum {
+    START,          /* Start a specified timer              */
+    STOP            /* Stop a specified timer               */
+};
+
+/* The performance time structure */
+typedef struct sio_time_ {
+    double total_time[NUM_TIMERS];
+    struct timeval sys_timer[NUM_TIMERS];
+} sio_time;
+
+/* External function declarations */
+#ifdef __cplusplus
+extern "C" {
+#endif  /* __cplusplus */
+extern sio_time    *sio_time_new(void);
+extern void         sio_time_destroy(sio_time *pt);
+extern void         set_timer_type(sio_time *pt);
+extern sio_time    *set_time(sio_time *pt, timer_type t, int start_stop);
+extern double       get_time(sio_time *pt, timer_type t);
+#ifdef __cplusplus
+}
+#endif  /* __cplusplus */
+
+#endif  /* SIO_TIMER__ */