mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-20 21:31:32 +03:00
f8a73b2625
git-subtree-dir: outside/libuv git-subtree-mainline: 8284e3540e0cd1f056386d61084a7e643b762afc git-subtree-split: d778dc588507588b12b9f9d2905078db542ed751
109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/* Copyright Joyent, Inc. and other Node 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.
|
|
*/
|
|
|
|
#if !defined(_WIN32)
|
|
|
|
#include "uv.h"
|
|
#include "task.h"
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <sys/resource.h>
|
|
#include <unistd.h>
|
|
|
|
static void connection_cb(uv_stream_t* server_handle, int status);
|
|
static void connect_cb(uv_connect_t* req, int status);
|
|
|
|
static const int maxfd = 31;
|
|
static unsigned connect_cb_called;
|
|
static uv_tcp_t server_handle;
|
|
static uv_tcp_t client_handle;
|
|
|
|
|
|
TEST_IMPL(emfile) {
|
|
struct sockaddr_in addr;
|
|
struct rlimit limits;
|
|
uv_connect_t connect_req;
|
|
uv_loop_t* loop;
|
|
int first_fd;
|
|
|
|
loop = uv_default_loop();
|
|
addr = uv_ip4_addr("127.0.0.1", TEST_PORT);
|
|
ASSERT(0 == uv_tcp_init(loop, &server_handle));
|
|
ASSERT(0 == uv_tcp_init(loop, &client_handle));
|
|
ASSERT(0 == uv_tcp_bind(&server_handle, addr));
|
|
ASSERT(0 == uv_listen((uv_stream_t*) &server_handle, 8, connection_cb));
|
|
|
|
/* Lower the file descriptor limit and use up all fds save one. */
|
|
limits.rlim_cur = limits.rlim_max = maxfd + 1;
|
|
if (setrlimit(RLIMIT_NOFILE, &limits)) {
|
|
perror("setrlimit(RLIMIT_NOFILE)");
|
|
ASSERT(0);
|
|
}
|
|
|
|
/* Remember the first one so we can clean up afterwards. */
|
|
do
|
|
first_fd = dup(0);
|
|
while (first_fd == -1 && errno == EINTR);
|
|
ASSERT(first_fd > 0);
|
|
|
|
while (dup(0) != -1 || errno == EINTR);
|
|
ASSERT(errno == EMFILE);
|
|
close(maxfd);
|
|
|
|
/* Now connect and use up the last available file descriptor. The EMFILE
|
|
* handling logic in src/unix/stream.c should ensure that connect_cb() runs
|
|
* whereas connection_cb() should *not* run.
|
|
*/
|
|
ASSERT(0 == uv_tcp_connect(&connect_req, &client_handle, addr, connect_cb));
|
|
ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));
|
|
ASSERT(1 == connect_cb_called);
|
|
|
|
/* Close the dups again. Ignore errors in the unlikely event that the
|
|
* file descriptors were not contiguous.
|
|
*/
|
|
while (first_fd < maxfd) {
|
|
close(first_fd);
|
|
first_fd += 1;
|
|
}
|
|
|
|
MAKE_VALGRIND_HAPPY();
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void connection_cb(uv_stream_t* server_handle, int status) {
|
|
ASSERT(0 && "connection_cb should not be called.");
|
|
}
|
|
|
|
|
|
static void connect_cb(uv_connect_t* req, int status) {
|
|
/* |status| should equal 0 because the connection should have been accepted,
|
|
* it's just that the server immediately closes it again.
|
|
*/
|
|
ASSERT(0 == status);
|
|
connect_cb_called += 1;
|
|
uv_close((uv_handle_t*) &server_handle, NULL);
|
|
uv_close((uv_handle_t*) &client_handle, NULL);
|
|
}
|
|
|
|
#endif /* !defined(_WIN32) */
|