urbit/outside/libuv/test/test-idle.c

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


static uv_timer_t timer_handle;
static uv_idle_t idle_handle;

static int idle_cb_called = 0;
static int timer_cb_called = 0;
static int close_cb_called = 0;


static void close_cb(uv_handle_t* handle) {
  close_cb_called++;
}


static void timer_cb(uv_timer_t* handle, int status) {
  ASSERT(handle == &timer_handle);
  ASSERT(status == 0);

  uv_close((uv_handle_t*) &idle_handle, close_cb);
  uv_close((uv_handle_t*) &timer_handle, close_cb);

  timer_cb_called++;
  LOGF("timer_cb %d\n", timer_cb_called);
}


static void idle_cb(uv_idle_t* handle, int status) {
  ASSERT(handle == &idle_handle);
  ASSERT(status == 0);

  idle_cb_called++;
  LOGF("idle_cb %d\n", idle_cb_called);
}


TEST_IMPL(idle_starvation) {
  int r;

  r = uv_idle_init(uv_default_loop(), &idle_handle);
  ASSERT(r == 0);
  r = uv_idle_start(&idle_handle, idle_cb);
  ASSERT(r == 0);

  r = uv_timer_init(uv_default_loop(), &timer_handle);
  ASSERT(r == 0);
  r = uv_timer_start(&timer_handle, timer_cb, 50, 0);
  ASSERT(r == 0);

  r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);
  ASSERT(r == 0);

  ASSERT(idle_cb_called > 0);
  ASSERT(timer_cb_called == 1);
  ASSERT(close_cb_called == 2);

  MAKE_VALGRIND_HAPPY();
  return 0;
}