grpc1.45.2/third_party/libuv/test/test-loop-stop.c

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#include "uv.h"
#include "task.h"

static uv_prepare_t prepare_handle;
static uv_timer_t timer_handle;
static int prepare_called = 0;
static int timer_called = 0;
static int num_ticks = 10;


static void prepare_cb(uv_prepare_t* handle) {
  ASSERT(handle == &prepare_handle);
  prepare_called++;
  if (prepare_called == num_ticks)
    uv_prepare_stop(handle);
}


static void timer_cb(uv_timer_t* handle) {
  ASSERT(handle == &timer_handle);
  timer_called++;
  if (timer_called == 1)
    uv_stop(uv_default_loop());
  else if (timer_called == num_ticks)
    uv_timer_stop(handle);
}


TEST_IMPL(loop_stop) {
  int r;
  uv_prepare_init(uv_default_loop(), &prepare_handle);
  uv_prepare_start(&prepare_handle, prepare_cb);
  uv_timer_init(uv_default_loop(), &timer_handle);
  uv_timer_start(&timer_handle, timer_cb, 100, 100);

  r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);
  ASSERT(r != 0);
  ASSERT(timer_called == 1);

  r = uv_run(uv_default_loop(), UV_RUN_NOWAIT);
  ASSERT(r != 0);
  ASSERT(prepare_called > 1);

  r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);
  ASSERT(r == 0);
  ASSERT(timer_called == 10);
  ASSERT(prepare_called == 10);

  return 0;
}