libuv-svace-build

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/* Copyright libuv contributors. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include "task.h"
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#include "uv.h"
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static int done = 0;
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static unsigned events = 0;
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static unsigned result;
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static unsigned fastrand(void) {
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  static unsigned g = 0;
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  g = g * 214013 + 2531011;
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  return g;
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}
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static void work_cb(uv_work_t* req) {
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  req->data = &result;
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  *(unsigned*)req->data = fastrand();
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}
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static void after_work_cb(uv_work_t* req, int status) {
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  events++;
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  if (!done)
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    ASSERT_OK(uv_queue_work(req->loop, req, work_cb, after_work_cb));
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}
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static void timer_cb(uv_timer_t* handle) { done = 1; }
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BENCHMARK_IMPL(queue_work) {
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  char fmtbuf[2][32];
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  uv_timer_t timer_handle;
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  uv_work_t work;
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  uv_loop_t* loop;
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  int timeout;
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  loop = uv_default_loop();
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  timeout = 5000;
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  ASSERT_OK(uv_timer_init(loop, &timer_handle));
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  ASSERT_OK(uv_timer_start(&timer_handle, timer_cb, timeout, 0));
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  ASSERT_OK(uv_queue_work(loop, &work, work_cb, after_work_cb));
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  ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
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  printf("%s async jobs in %.1f seconds (%s/s)\n",
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         fmt(&fmtbuf[0], events),
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         timeout / 1000.,
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         fmt(&fmtbuf[1], events / (timeout / 1000.)));
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  MAKE_VALGRIND_HAPPY(loop);
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  return 0;
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}
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