libuv-svace-build

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/* Copyright The libuv project and contributors. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include "uv.h"
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#include "task.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define CHECK_OBJECT(handle, type, parent) \
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  ASSERT_PTR_EQ((type*)(handle), &(parent))
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static uv_udp_t client;
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static uv_idle_t idle_handle;
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static uv_udp_send_t send_req;
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static uv_buf_t buf;
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static struct sockaddr_in addr;
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static char send_data[1024];
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static int loop_hang_called;
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static void send_cb(uv_udp_send_t* req, int status);
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static void idle_cb(uv_idle_t* handle) {
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  int r;
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  ASSERT_NULL(send_req.handle);
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  CHECK_OBJECT(handle, uv_idle_t, idle_handle);
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  ASSERT_OK(uv_idle_stop(handle));
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  /* It probably would have stalled by now if it's going to stall at all. */
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  if (++loop_hang_called > 1000) {
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    uv_close((uv_handle_t*) &client, NULL);
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    uv_close((uv_handle_t*) &idle_handle, NULL);
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    return;
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  }
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  r = uv_udp_send(&send_req,
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                  &client,
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                  &buf,
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                  1,
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                  (const struct sockaddr*) &addr,
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                  send_cb);
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  ASSERT_OK(r);
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}
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static void send_cb(uv_udp_send_t* req, int status) {
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  ASSERT_NOT_NULL(req);
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  ASSERT(status == 0 || status == UV_ENETUNREACH);
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  CHECK_OBJECT(req->handle, uv_udp_t, client);
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  CHECK_OBJECT(req, uv_udp_send_t, send_req);
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  req->handle = NULL;
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  ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
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}
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TEST_IMPL(udp_send_hang_loop) {
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  ASSERT_OK(uv_idle_init(uv_default_loop(), &idle_handle));
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  /* 192.0.2.0/24 is "TEST-NET" and reserved for documentation.
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   * Good for us, though. Since we want to have something unreachable.
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   */
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  ASSERT_OK(uv_ip4_addr("192.0.2.3", TEST_PORT, &addr));
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  ASSERT_OK(uv_udp_init(uv_default_loop(), &client));
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  buf = uv_buf_init(send_data, sizeof(send_data));
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  ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
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  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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  ASSERT_GT(loop_hang_called, 1000);
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  MAKE_VALGRIND_HAPPY(uv_default_loop());
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  return 0;
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}
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