tildefriends/deps/libuv/test/benchmark-getaddrinfo.c

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 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
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 *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "uv.h"
#include "task.h"
#include <stdlib.h>

#define CONCURRENT_CALLS 10
#define TOTAL_CALLS 10000

static const char* name = "localhost";

static uv_loop_t* loop;

static uv_getaddrinfo_t handles[CONCURRENT_CALLS];

static int calls_initiated = 0;
static int calls_completed = 0;
static int64_t start_time;
static int64_t end_time;


static void getaddrinfo_initiate(uv_getaddrinfo_t* handle);


static void getaddrinfo_cb(uv_getaddrinfo_t* handle, int status,
    struct addrinfo* res) {
  ASSERT_OK(status);
  calls_completed++;
  if (calls_initiated < TOTAL_CALLS) {
    getaddrinfo_initiate(handle);
  }

  uv_freeaddrinfo(res);
}


static void getaddrinfo_initiate(uv_getaddrinfo_t* handle) {
  int r;

  calls_initiated++;

  r = uv_getaddrinfo(loop, handle, &getaddrinfo_cb, name, NULL, NULL);
  ASSERT_OK(r);
}


BENCHMARK_IMPL(getaddrinfo) {
  int i;

  loop = uv_default_loop();

  uv_update_time(loop);
  start_time = uv_now(loop);

  for (i = 0; i < CONCURRENT_CALLS; i++) {
    getaddrinfo_initiate(&handles[i]);
  }

  uv_run(loop, UV_RUN_DEFAULT);

  uv_update_time(loop);
  end_time = uv_now(loop);

  ASSERT_EQ(calls_initiated, TOTAL_CALLS);
  ASSERT_EQ(calls_completed, TOTAL_CALLS);

  fprintf(stderr, "getaddrinfo: %.0f req/s\n",
          (double) calls_completed / (double) (end_time - start_time) * 1000.0);
  fflush(stderr);

  MAKE_VALGRIND_HAPPY(loop);
  return 0;
}