1 files changed, 108 insertions, 0 deletions
diff --git a/bench/bench.c b/bench/bench.c
new file mode 100644
index 0000000..c28ac65
--- /dev/null
+++ b/bench/bench.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright © 2015 Kazunobu Kuriyama <kazunobu.kuriyama@nifty.com>
+ *                  Ran Benita <ran234@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person 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, sublicense,
+ * 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:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "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.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "bench.h"
+#include "../src/utils.h"
+
+#ifndef _MSC_VER
+#include <sys/time.h>
+#else
+#include <windows.h>
+#include <stdint.h>
+
+struct timeval {
+    long tv_sec, tv_usec;
+};
+
+static int
+gettimeofday(struct timeval *tv, void *unused)
+{
+    static const uint64_t EPOCH = ((uint64_t) 116444736000000000ULL);
+
+    SYSTEMTIME system_time;
+    FILETIME file_time;
+    uint64_t t;
+
+    GetSystemTime(&system_time);
+    SystemTimeToFileTime(&system_time, &file_time);
+    t = (uint64_t) file_time.dwLowDateTime;
+    t += ((uint64_t) file_time.dwHighDateTime) << 32;
+
+    tv->tv_sec  = (long) ((t - EPOCH) / 10000000L);
+    tv->tv_usec = (long) (system_time.wMilliseconds * 1000);
+    return 0;
+}
+#endif
+
+void
+bench_start(struct bench *bench)
+{
+    struct timeval val;
+    (void) gettimeofday(&val, NULL);
+    bench->start = (struct bench_time) {
+        .seconds = val.tv_sec,
+        .microseconds = val.tv_usec,
+    };
+}
+
+void
+bench_stop(struct bench *bench)
+{
+    struct timeval val;
+    (void) gettimeofday(&val, NULL);
+    bench->stop = (struct bench_time) {
+        .seconds = val.tv_sec,
+        .microseconds = val.tv_usec,
+    };
+}
+
+void
+bench_elapsed(const struct bench *bench, struct bench_time *result)
+{
+    result->seconds = bench->stop.seconds - bench->start.seconds;
+    result->microseconds = bench->stop.microseconds - bench->start.microseconds;
+    if (result->microseconds < 0) {
+        result->microseconds += 1000000;
+        result->seconds--;
+    }
+}
+
+char *
+bench_elapsed_str(const struct bench *bench)
+{
+    struct bench_time elapsed;
+    char *buf;
+    int ret;
+
+    bench_elapsed(bench, &elapsed);
+    ret = asprintf(&buf, "%ld.%06ld", elapsed.seconds, elapsed.microseconds);
+    assert(ret >= 0);
+
+    return buf;
+}