grpc1.45.2/third_party/libuv/test/test-async-null-cb.c

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 *
 * The above copyright notice and this permission notice shall be included in
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "uv.h"
#include "task.h"
#include <string.h>

static uv_async_t async_handle;
static uv_check_t check_handle;
static int check_cb_called;
static uv_thread_t thread;


static void thread_cb(void* dummy) {
  (void) &dummy;
  uv_async_send(&async_handle);
}


static void check_cb(uv_check_t* handle) {
  ASSERT(check_cb_called == 0);
  uv_close((uv_handle_t*) &async_handle, NULL);
  uv_close((uv_handle_t*) &check_handle, NULL);
  check_cb_called++;
}


TEST_IMPL(async_null_cb) {
  /*
   * Fill async_handle with garbage values.
   * uv_async_init() should properly initialize struct fields regardless of
   * initial values.
   * This is added to verify paddings between fields do not affect behavior.
   */
  memset(&async_handle, 0xff, sizeof(async_handle));

  ASSERT(0 == uv_async_init(uv_default_loop(), &async_handle, NULL));
  ASSERT(0 == uv_check_init(uv_default_loop(), &check_handle));
  ASSERT(0 == uv_check_start(&check_handle, check_cb));
  ASSERT(0 == uv_thread_create(&thread, thread_cb, NULL));
  ASSERT(0 == uv_run(uv_default_loop(), UV_RUN_DEFAULT));
  ASSERT(0 == uv_thread_join(&thread));
  ASSERT(1 == check_cb_called);
  MAKE_VALGRIND_HAPPY();
  return 0;
}