init - 初始化项目

3rdparty/libjasper/jas_tmr.c

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+/*
+ * Copyright (c) 2004 Michael David Adams.
+ * All rights reserved.
+ */
+
+/* __START_OF_JASPER_LICENSE__
+ *
+ * JasPer License Version 2.0
+ *
+ * Copyright (c) 2001-2006 Michael David Adams
+ * Copyright (c) 1999-2000 Image Power, Inc.
+ * Copyright (c) 1999-2000 The University of British Columbia
+ *
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person (the
+ * "User") obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * 1.  The above copyright notices and this permission notice (which
+ * includes the disclaimer below) shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * 2.  The name of a copyright holder shall not be used to endorse or
+ * promote products derived from the Software without specific prior
+ * written permission.
+ *
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
+ * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
+ * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
+ * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
+ * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
+ * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
+ * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
+ * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
+ * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
+ * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
+ * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
+ * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
+ * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
+ * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
+ * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
+ * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
+ * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
+ *
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * Timing Routines
+ *
+ * $Id: jas_tmr.c,v 1.1 2008-05-26 09:40:51 vp153 Exp $
+ */
+
+/******************************************************************************\
+* Includes.
+\******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "jasper/jas_tmr.h"
+
+/******************************************************************************\
+* Code.
+\******************************************************************************/
+
+#if defined(HAVE_GETTIMEOFDAY)
+
+void jas_tmr_start(jas_tmr_t *tmr)
+{
+    if (gettimeofday(&tmr->start, 0)) {
+        abort();
+    }
+}
+
+void jas_tmr_stop(jas_tmr_t *tmr)
+{
+    if (gettimeofday(&tmr->stop, 0)) {
+        abort();
+    }
+}
+
+double jas_tmr_get(jas_tmr_t *tmr)
+{
+    double t0;
+    double t1;
+    t0 = ((double) tmr->start.tv_sec) + ((double) tmr->start.tv_usec) / 1e6;
+    t1 = ((double) tmr->stop.tv_sec) + ((double) tmr->stop.tv_usec) / 1e6;
+    return t1 - t0;
+}
+
+#elif defined(HAVE_GETRUSAGE)
+
+void jas_tmr_start(jas_tmr_t *tmr)
+{
+    if (getrusage(RUSAGE_SELF, &tmr->start) < 0) {
+        abort();
+    }
+}
+
+void jas_tmr_stop(jas_tmr_t *tmr)
+{
+    if (getrusage(RUSAGE_SELF, &tmr->stop) < 0) {
+        abort();
+    }
+}
+
+double jas_tmr_get(jas_tmr_t *tmr)
+{
+    double t;
+    t = ((tmr->stop.ru_utime.tv_sec * 1e6 + tmr->stop.ru_utime.tv_usec) -
+      (tmr->start.ru_utime.tv_sec * 1e6 + tmr->start.ru_utime.tv_usec)) / 1e6;
+    t += ((tmr->stop.ru_stime.tv_sec * 1e6 + tmr->stop.ru_stime.tv_usec) -
+      (tmr->start.ru_stime.tv_sec * 1e6 + tmr->start.ru_stime.tv_usec)) / 1e6;
+    return t;
+}
+
+#else
+
+void jas_tmr_start(jas_tmr_t *tmr)
+{
+}
+
+void jas_tmr_stop(jas_tmr_t *tmr)
+{
+}
+
+double jas_tmr_get(jas_tmr_t *tmr)
+{
+    return 0.0;
+}
+
+#endif
+