libuv-svace-build

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/* Copyright libuv project 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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#ifdef _WIN32
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TEST_IMPL(iouring_pollhup) {
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  RETURN_SKIP("Not on Windows.");
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}
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#else  /* !_WIN32 */
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#include <unistd.h>  /* close() */
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static uv_pipe_t p1;
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static uv_pipe_t p2;
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static uv_idle_t idle_handle;
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static int iters;
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static int duped_fd;
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static int newpipefds[2];
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static void alloc_buffer(uv_handle_t* handle,
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                         size_t suggested_size,
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                         uv_buf_t* buf) {
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  static char slab[32];
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  *buf = uv_buf_init(slab, sizeof(slab));
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}
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static void read_data2(uv_stream_t* stream,
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                       ssize_t nread,
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                       const uv_buf_t* buf) {
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  if (nread < 0) {
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    ASSERT_EQ(nread, UV_EOF);
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    ASSERT_OK(close(duped_fd));
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    duped_fd = -1;
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    uv_close((uv_handle_t*) &p2, NULL);
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    uv_close((uv_handle_t*) &idle_handle, NULL);
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  } else {
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    /* If nread == 0 is because of POLLHUP received still from pipefds[0] file
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     * description which is still referenced in duped_fd. It should not happen
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     * if close(p1) was called after EPOLL_CTL_DEL.
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     */
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    ASSERT_GT(nread, 0);
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  }
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}
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static void idle_cb(uv_idle_t* handle) {
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  if (++iters == 1) {
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    ASSERT_OK(uv_pipe_open(&p2, newpipefds[0]));
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    ASSERT_OK(uv_read_start((uv_stream_t*) &p2, alloc_buffer, read_data2));
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  } else {
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    ASSERT_OK(uv_idle_stop(handle));
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    ASSERT_OK(close(newpipefds[1]));
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    newpipefds[1] = -1;
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  }
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}
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static void read_data(uv_stream_t* stream,
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                      ssize_t nread,
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                      const uv_buf_t* buf) {
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  ASSERT_EQ(nread, UV_EOF);
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  uv_close((uv_handle_t*) stream, NULL);
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  ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
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}
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TEST_IMPL(iouring_pollhup) {
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  uv_loop_t* loop;
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  int pipefds[2];
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  loop = uv_default_loop();
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  ASSERT_OK(uv_pipe_init(loop, &p1, 0));
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  ASSERT_OK(uv_pipe_init(loop, &p2, 0));
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  ASSERT_OK(uv_idle_init(loop, &idle_handle));
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  ASSERT_OK(pipe(pipefds));
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  ASSERT_OK(pipe(newpipefds));
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  ASSERT_OK(uv_pipe_open(&p1, pipefds[0]));
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  duped_fd = dup(pipefds[0]);
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  ASSERT_NE(duped_fd, -1);
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  ASSERT_OK(uv_read_start((uv_stream_t*) &p1, alloc_buffer, read_data));
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  ASSERT_OK(close(pipefds[1]));  /* Close write end, generate POLLHUP. */
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  pipefds[1] = -1;
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  ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
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  MAKE_VALGRIND_HAPPY(uv_default_loop());
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  return 0;
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}
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#endif  /* !_WIN32 */
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