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121 lines
4.0 KiB
121 lines
4.0 KiB
/* Copyright Joyent, Inc. and other Node 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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#if !defined(_WIN32) |
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#include "uv.h" |
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#include "task.h" |
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#include <errno.h> |
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#include <sys/resource.h> |
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#include <unistd.h> |
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static void connection_cb(uv_stream_t* server_handle, int status); |
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static void connect_cb(uv_connect_t* req, int status); |
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static const int maxfd = 31; |
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static unsigned connect_cb_called; |
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static uv_tcp_t server_handle; |
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static uv_tcp_t client_handle; |
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TEST_IMPL(emfile) { |
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struct sockaddr_in addr; |
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struct rlimit limits; |
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uv_connect_t connect_req; |
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uv_loop_t* loop; |
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int first_fd; |
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#if defined(_AIX) || defined(__MVS__) |
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/* On AIX, if a 'accept' call fails ECONNRESET is set on the socket |
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* which causes uv__emfile_trick to not work as intended and this test |
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* to fail. |
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*/ |
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RETURN_SKIP("uv__emfile_trick does not work on this OS"); |
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#endif |
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/* Lower the file descriptor limit and use up all fds save one. */ |
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limits.rlim_cur = limits.rlim_max = maxfd + 1; |
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if (setrlimit(RLIMIT_NOFILE, &limits)) { |
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ASSERT(errno == EPERM); /* Valgrind blocks the setrlimit() call. */ |
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RETURN_SKIP("setrlimit(RLIMIT_NOFILE) failed, running under valgrind?"); |
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} |
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loop = uv_default_loop(); |
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ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); |
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ASSERT(0 == uv_tcp_init(loop, &server_handle)); |
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ASSERT(0 == uv_tcp_init(loop, &client_handle)); |
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ASSERT(0 == uv_tcp_bind(&server_handle, (const struct sockaddr*) &addr, 0)); |
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ASSERT(0 == uv_listen((uv_stream_t*) &server_handle, 8, connection_cb)); |
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/* Remember the first one so we can clean up afterwards. */ |
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do |
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first_fd = dup(0); |
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while (first_fd == -1 && errno == EINTR); |
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ASSERT(first_fd > 0); |
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while (dup(0) != -1 || errno == EINTR); |
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ASSERT(errno == EMFILE); |
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close(maxfd); |
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/* Now connect and use up the last available file descriptor. The EMFILE |
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* handling logic in src/unix/stream.c should ensure that connect_cb() runs |
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* whereas connection_cb() should *not* run. |
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*/ |
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ASSERT(0 == uv_tcp_connect(&connect_req, |
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&client_handle, |
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(const struct sockaddr*) &addr, |
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connect_cb)); |
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ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT)); |
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ASSERT(1 == connect_cb_called); |
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/* Close the dups again. Ignore errors in the unlikely event that the |
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* file descriptors were not contiguous. |
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*/ |
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while (first_fd < maxfd) { |
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close(first_fd); |
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first_fd += 1; |
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} |
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MAKE_VALGRIND_HAPPY(); |
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return 0; |
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} |
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static void connection_cb(uv_stream_t* server_handle, int status) { |
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ASSERT(0 && "connection_cb should not be called."); |
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} |
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static void connect_cb(uv_connect_t* req, int status) { |
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/* |status| should equal 0 because the connection should have been accepted, |
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* it's just that the server immediately closes it again. |
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*/ |
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ASSERT(0 == status); |
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connect_cb_called += 1; |
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uv_close((uv_handle_t*) &server_handle, NULL); |
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uv_close((uv_handle_t*) &client_handle, NULL); |
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} |
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#else |
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typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */ |
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#endif /* !_WIN32 */
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