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1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "task.h"
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23 #include "uv.h"
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27
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28 #define NUM_TICKS (2 * 1000 * 1000)
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29 #define NUM_TICKS2 (2 * 1000 * 1000 * 100)
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30
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31 static unsigned long ticks;
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32 static uv_idle_t idle_handle;
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33 static uv_timer_t timer_handle;
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34
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35
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36 static void idle_cb(uv_idle_t* handle) {
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37 if (++ticks == NUM_TICKS)
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38 uv_idle_stop(handle);
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39 }
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40
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41 static void idle_alive_cb(uv_idle_t* handle) {
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42 int ticks = 0;
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43
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44 while (++ticks < NUM_TICKS2) {
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45 int r = uv_loop_alive(handle->loop);
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46 if (r == 0)
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47 abort();
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48 }
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49
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50 *(int*)handle->data = ticks;
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51 uv_idle_stop(handle);
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52 }
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53
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54
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55 static void idle2_cb(uv_idle_t* handle) {
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56 ticks++;
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57 }
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58
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59
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60 static void timer_cb(uv_timer_t* handle) {
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61 uv_idle_stop(&idle_handle);
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62 uv_timer_stop(&timer_handle);
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63 }
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64
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65
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66 BENCHMARK_IMPL(loop_count) {
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67 uv_loop_t* loop = uv_default_loop();
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68 uint64_t ns;
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69
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70 uv_idle_init(loop, &idle_handle);
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71 uv_idle_start(&idle_handle, idle_cb);
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72
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73 ns = uv_hrtime();
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74 uv_run(loop, UV_RUN_DEFAULT);
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75 ns = uv_hrtime() - ns;
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76
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77 ASSERT_UINT64_EQ(ticks, NUM_TICKS);
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78
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79 fprintf(stderr, "loop_count: %d ticks in %.2fs (%.0f/s)\n",
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80 NUM_TICKS,
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81 ns / 1e9,
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82 NUM_TICKS / (ns / 1e9));
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83 fflush(stderr);
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84
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85 MAKE_VALGRIND_HAPPY(loop);
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86 return 0;
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87 }
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88
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89
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90 BENCHMARK_IMPL(loop_count_timed) {
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91 uv_loop_t* loop = uv_default_loop();
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92
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93 uv_idle_init(loop, &idle_handle);
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94 uv_idle_start(&idle_handle, idle2_cb);
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95
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96 uv_timer_init(loop, &timer_handle);
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97 uv_timer_start(&timer_handle, timer_cb, 5000, 0);
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98
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99 uv_run(loop, UV_RUN_DEFAULT);
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100
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101 fprintf(stderr, "loop_count: %lu ticks (%.0f ticks/s)\n", ticks, ticks / 5.0);
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102 fflush(stderr);
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103
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104 MAKE_VALGRIND_HAPPY(loop);
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105 return 0;
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106 }
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107
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108 /* Measure the performance of running uv_loop_alive(). Adding this so we can get
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109 * some sort of metric for the impact of switching active_reqs.count to use
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110 * atomics. No other code sits in a hot path. */
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111 BENCHMARK_IMPL(loop_alive) {
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112 uv_loop_t* loop = uv_default_loop();
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113 int ticks = 0;
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114 uint64_t ns;
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115
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116 uv_idle_init(loop, &idle_handle);
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117 idle_handle.data = &ticks;
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118 uv_idle_start(&idle_handle, idle_alive_cb);
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119
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120 ns = uv_hrtime();
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121 uv_run(loop, UV_RUN_DEFAULT);
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122 ns = uv_hrtime() - ns;
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123
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124 ASSERT_EQ(ticks, NUM_TICKS2);
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125
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126 fprintf(stderr, "loop_alive: %d ticks in %.2fs (%.0f/s)\n",
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127 NUM_TICKS2,
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128 ns / 1e9,
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129 NUM_TICKS2 / (ns / 1e9));
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130 fflush(stderr);
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131
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132 MAKE_VALGRIND_HAPPY(loop);
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133 return 0;
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134 }
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