xref: /libuv/test/benchmark-million-timers.c (revision 011a1ac1)
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21 
22 #include "task.h"
23 #include "uv.h"
24 
25 #define NUM_TIMERS (10 * 1000 * 1000)
26 
27 static int timer_cb_called;
28 static int close_cb_called;
29 
30 
timer_cb(uv_timer_t * handle)31 static void timer_cb(uv_timer_t* handle) {
32   timer_cb_called++;
33 }
34 
35 
close_cb(uv_handle_t * handle)36 static void close_cb(uv_handle_t* handle) {
37   close_cb_called++;
38 }
39 
40 
BENCHMARK_IMPL(million_timers)41 BENCHMARK_IMPL(million_timers) {
42   uv_timer_t* timers;
43   uv_loop_t* loop;
44   uint64_t before_all;
45   uint64_t before_run;
46   uint64_t after_run;
47   uint64_t after_all;
48   int timeout;
49   int i;
50 
51   timers = malloc(NUM_TIMERS * sizeof(timers[0]));
52   ASSERT_NOT_NULL(timers);
53 
54   loop = uv_default_loop();
55   timeout = 0;
56 
57   before_all = uv_hrtime();
58   for (i = 0; i < NUM_TIMERS; i++) {
59     if (i % 1000 == 0) timeout++;
60     ASSERT_OK(uv_timer_init(loop, timers + i));
61     ASSERT_OK(uv_timer_start(timers + i, timer_cb, timeout, 0));
62   }
63 
64   before_run = uv_hrtime();
65   ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
66   after_run = uv_hrtime();
67 
68   for (i = 0; i < NUM_TIMERS; i++)
69     uv_close((uv_handle_t*) (timers + i), close_cb);
70 
71   ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
72   after_all = uv_hrtime();
73 
74   ASSERT_EQ(timer_cb_called, NUM_TIMERS);
75   ASSERT_EQ(close_cb_called, NUM_TIMERS);
76   free(timers);
77 
78   fprintf(stderr, "%.2f seconds total\n", (after_all - before_all) / 1e9);
79   fprintf(stderr, "%.2f seconds init\n", (before_run - before_all) / 1e9);
80   fprintf(stderr, "%.2f seconds dispatch\n", (after_run - before_run) / 1e9);
81   fprintf(stderr, "%.2f seconds cleanup\n", (after_all - after_run) / 1e9);
82   fflush(stderr);
83 
84   MAKE_VALGRIND_HAPPY(loop);
85   return 0;
86 }
87