libuv-svace-build

1
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2
 *
3
 * Permission is hereby granted, free of charge, to any person obtaining a copy
4
 * of this software and associated documentation files (the "Software"), to
5
 * deal in the Software without restriction, including without limitation the
6
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7
 * sell copies of the Software, and to permit persons to whom the Software is
8
 * furnished to do so, subject to the following conditions:
9
 *
10
 * The above copyright notice and this permission notice shall be included in
11
 * all copies or substantial portions of the Software.
12
 *
13
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19
 * IN THE SOFTWARE.
20
 */
21

22
#include "task.h"
23
#include "uv.h"
24

25
#include <stdio.h>
26
#include <stdlib.h>
27

28
#define NUM_TICKS (2 * 1000 * 1000)
29
#define NUM_TICKS2 (2 * 1000 * 1000 * 100)
30

31
static unsigned long ticks;
32
static uv_idle_t idle_handle;
33
static uv_timer_t timer_handle;
34

35

36
static void idle_cb(uv_idle_t* handle) {
37
  if (++ticks == NUM_TICKS)
38
    uv_idle_stop(handle);
39
}
40

41
static void idle_alive_cb(uv_idle_t* handle) {
42
  int ticks = 0;
43

44
  while (++ticks < NUM_TICKS2) {
45
    int r = uv_loop_alive(handle->loop);
46
    if (r == 0)
47
      abort();
48
  }
49

50
  *(int*)handle->data = ticks;
51
  uv_idle_stop(handle);
52
}
53

54

55
static void idle2_cb(uv_idle_t* handle) {
56
  ticks++;
57
}
58

59

60
static void timer_cb(uv_timer_t* handle) {
61
  uv_idle_stop(&idle_handle);
62
  uv_timer_stop(&timer_handle);
63
}
64

65

66
BENCHMARK_IMPL(loop_count) {
67
  uv_loop_t* loop = uv_default_loop();
68
  uint64_t ns;
69

70
  uv_idle_init(loop, &idle_handle);
71
  uv_idle_start(&idle_handle, idle_cb);
72

73
  ns = uv_hrtime();
74
  uv_run(loop, UV_RUN_DEFAULT);
75
  ns = uv_hrtime() - ns;
76

77
  ASSERT_UINT64_EQ(ticks, NUM_TICKS);
78

79
  fprintf(stderr, "loop_count: %d ticks in %.2fs (%.0f/s)\n",
80
          NUM_TICKS,
81
          ns / 1e9,
82
          NUM_TICKS / (ns / 1e9));
83
  fflush(stderr);
84

85
  MAKE_VALGRIND_HAPPY(loop);
86
  return 0;
87
}
88

89

90
BENCHMARK_IMPL(loop_count_timed) {
91
  uv_loop_t* loop = uv_default_loop();
92

93
  uv_idle_init(loop, &idle_handle);
94
  uv_idle_start(&idle_handle, idle2_cb);
95

96
  uv_timer_init(loop, &timer_handle);
97
  uv_timer_start(&timer_handle, timer_cb, 5000, 0);
98

99
  uv_run(loop, UV_RUN_DEFAULT);
100

101
  fprintf(stderr, "loop_count: %lu ticks (%.0f ticks/s)\n", ticks, ticks / 5.0);
102
  fflush(stderr);
103

104
  MAKE_VALGRIND_HAPPY(loop);
105
  return 0;
106
}
107

108
/* Measure the performance of running uv_loop_alive(). Adding this so we can get
109
 * some sort of metric for the impact of switching active_reqs.count to use
110
 * atomics. No other code sits in a hot path. */
111
BENCHMARK_IMPL(loop_alive) {
112
  uv_loop_t* loop = uv_default_loop();
113
  int ticks = 0;
114
  uint64_t ns;
115

116
  uv_idle_init(loop, &idle_handle);
117
  idle_handle.data = &ticks;
118
  uv_idle_start(&idle_handle, idle_alive_cb);
119

120
  ns = uv_hrtime();
121
  uv_run(loop, UV_RUN_DEFAULT);
122
  ns = uv_hrtime() - ns;
123

124
  ASSERT_EQ(ticks, NUM_TICKS2);
125

126
  fprintf(stderr, "loop_alive: %d ticks in %.2fs (%.0f/s)\n",
127
          NUM_TICKS2,
128
          ns / 1e9,
129
          NUM_TICKS2 / (ns / 1e9));
130
  fflush(stderr);
131

132
  MAKE_VALGRIND_HAPPY(loop);
133
  return 0;
134
}
135