Squashed 'third-party/libuv/' content from commit 3c40224

git-subtree-dir: third-party/libuv
git-subtree-split: 3c4022464acd92607f21c6eef69330fb071d0400

1 files changed, 90 insertions, 0 deletions

diff --git a/test/benchmark-loop-count.c b/test/benchmark-loop-count.c
new file mode 100644
index 0000000000..b4ee0ed5ff
--- /dev/null
+++ b/test/benchmark-loop-count.c
@@ -0,0 +1,90 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * 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 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 "task.h"
+#include "uv.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define NUM_TICKS (2 * 1000 * 1000)
+
+static unsigned long ticks;
+static uv_idle_t idle_handle;
+static uv_timer_t timer_handle;
+
+
+static void idle_cb(uv_idle_t* handle, int status) {
+  if (++ticks == NUM_TICKS)
+    uv_idle_stop(handle);
+}
+
+
+static void idle2_cb(uv_idle_t* handle, int status) {
+  ticks++;
+}
+
+
+static void timer_cb(uv_timer_t* handle, int status) {
+  uv_idle_stop(&idle_handle);
+  uv_timer_stop(&timer_handle);
+}
+
+
+BENCHMARK_IMPL(loop_count) {
+  uv_loop_t* loop = uv_default_loop();
+  uint64_t ns;
+
+  uv_idle_init(loop, &idle_handle);
+  uv_idle_start(&idle_handle, idle_cb);
+
+  ns = uv_hrtime();
+  uv_run(loop, UV_RUN_DEFAULT);
+  ns = uv_hrtime() - ns;
+
+  ASSERT(ticks == NUM_TICKS);
+
+  LOGF("loop_count: %d ticks in %.2fs (%.0f/s)\n",
+       NUM_TICKS,
+       ns / 1e9,
+       NUM_TICKS / (ns / 1e9));
+
+  MAKE_VALGRIND_HAPPY();
+  return 0;
+}
+
+
+BENCHMARK_IMPL(loop_count_timed) {
+  uv_loop_t* loop = uv_default_loop();
+
+  uv_idle_init(loop, &idle_handle);
+  uv_idle_start(&idle_handle, idle2_cb);
+
+  uv_timer_init(loop, &timer_handle);
+  uv_timer_start(&timer_handle, timer_cb, 5000, 0);
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  LOGF("loop_count: %lu ticks (%.0f ticks/s)\n", ticks, ticks / 5.0);
+
+  MAKE_VALGRIND_HAPPY();
+  return 0;
+}