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+/*
+ Copyright (c) 2007-2010 iMatix Corporation
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ 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
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <assert.h>
+#include <stdlib.h>
+#ifdef _WIN32
+# include <windows.h>
+#else
+# include <sys/time.h>
+# include <unistd.h>
+#endif
+#include "../src/stdint.hpp"
+
+#ifdef _WIN32
+
+static uint64_t now ()
+{
+ // Get the high resolution counter's accuracy.
+ LARGE_INTEGER ticksPerSecond;
+ QueryPerformanceFrequency (&ticksPerSecond);
+
+ // What time is it?
+ LARGE_INTEGER tick;
+ QueryPerformanceCounter (&tick);
+
+ // Convert the tick number into the number of seconds
+ // since the system was started.
+ double ticks_div = (double) (ticksPerSecond.QuadPart / 1000000);
+ return (uint64_t) (tick.QuadPart / ticks_div);
+}
+
+void perf_sleep (int seconds_)
+{
+ Sleep (seconds_ * 1000);
+}
+
+#else /* not _WIN32 */
+
+static uint64_t now ()
+{
+ struct timeval tv;
+ int rc;
+
+ rc = gettimeofday (&tv, NULL);
+ assert (rc == 0);
+ return (tv.tv_sec * (uint64_t) 1000000 + tv.tv_usec);
+}
+
+void perf_sleep (int seconds_)
+{
+ sleep (seconds_);
+}
+
+#endif /* _WIN32 */
+
+void *stopwatch_start ()
+{
+ uint64_t *watch = (uint64_t*) malloc (sizeof (uint64_t));
+ assert (watch);
+ *watch = now ();
+ return (void*) watch;
+}
+
+unsigned long stopwatch_stop (void *watch_)
+{
+ uint64_t end = now ();
+ uint64_t start = *(uint64_t*) watch_;
+ free (watch_);
+ return (unsigned long) (end - start);
+}