/* Copyright Bert Belder, and other libuv contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include <errno.h>

#include <stdio.h>

#include "uv.h"

#include "task.h"

#ifdef _MSC_VER  /* msvc */

# define NO_INLINE __declspec(noinline)

#else  /* gcc */

# define NO_INLINE __attribute__ ((noinline))

#endif

#ifdef _WIN32

static uv_os_sock_t sock;

static uv_poll_t handle;

static int close_cb_called = 0;

static void close_cb(uv_handle_t* h) {

  close_cb_called++;

}

static void poll_cb(uv_poll_t* h, int status, int events) {

  ASSERT(0 && "should never get here");

}

static void NO_INLINE close_socket_and_verify_stack(void) {

  const uint32_t MARKER = 0xDEADBEEF;

  const int VERIFY_AFTER = 10; /* ms */

  int r;

  volatile uint32_t data[65536];

  size_t i;

  for (i = 0; i < ARRAY_SIZE(data); i++)

    data[i] = MARKER;

  r = closesocket(sock);

  ASSERT(r == 0);

  uv_sleep(VERIFY_AFTER);

  for (i = 0; i < ARRAY_SIZE(data); i++)

    ASSERT(data[i] == MARKER);

}

#endif

TEST_IMPL(poll_close_doesnt_corrupt_stack) {

#ifndef _WIN32

  RETURN_SKIP("Test only relevant on Windows");

#else

  struct WSAData wsa_data;

  int r;

  unsigned long on;

  struct sockaddr_in addr;

  r = WSAStartup(MAKEWORD(2, 2), &wsa_data);

  ASSERT(r == 0);

  sock = socket(AF_INET, SOCK_STREAM, 0);

  ASSERT(sock != INVALID_SOCKET);

  on = 1;

  r = ioctlsocket(sock, FIONBIO, &on;;

  ASSERT(r == 0);

  r = uv_ip4_addr("127.0.0.1", TEST_PORT, &addr);

  ASSERT(r == 0);

  r = connect(sock, (const struct sockaddr*) &addr, sizeof addr);

  ASSERT(r != 0);

  ASSERT(WSAGetLastError() == WSAEWOULDBLOCK);

  r = uv_poll_init_socket(uv_default_loop(), &handle, sock);

  ASSERT(r == 0);

  r = uv_poll_start(&handle, UV_READABLE | UV_WRITABLE, poll_cb);

  ASSERT(r == 0);

  uv_close((uv_handle_t*) &handle, close_cb);

  close_socket_and_verify_stack();

  r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);

  ASSERT(r == 0);

  ASSERT(close_cb_called == 1);

  MAKE_VALGRIND_HAPPY();

  return 0;

#endif

}