Cory McWilliams
79022e1e1f
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3621 ed5197a5-7fde-0310-b194-c3ffbd925b24
697 lines
18 KiB
C
697 lines
18 KiB
C
/* 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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#include <errno.h>
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#ifdef _WIN32
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# include <fcntl.h>
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#else
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# include <sys/socket.h>
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# include <unistd.h>
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#endif
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#include "uv.h"
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#include "task.h"
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#ifdef __linux__
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# include <sys/epoll.h>
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#endif
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#ifdef UV_HAVE_KQUEUE
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# include <sys/types.h>
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# include <sys/event.h>
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# include <sys/time.h>
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#endif
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#define NUM_CLIENTS 5
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#define TRANSFER_BYTES (1 << 16)
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#undef MIN
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#define MIN(a, b) (((a) < (b)) ? (a) : (b));
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typedef enum {
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UNIDIRECTIONAL,
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DUPLEX
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} test_mode_t;
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typedef struct connection_context_s {
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uv_poll_t poll_handle;
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uv_timer_t timer_handle;
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uv_os_sock_t sock;
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size_t read, sent;
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int is_server_connection;
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int open_handles;
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int got_fin, sent_fin, got_disconnect;
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unsigned int events, delayed_events;
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} connection_context_t;
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typedef struct server_context_s {
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uv_poll_t poll_handle;
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uv_os_sock_t sock;
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int connections;
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} server_context_t;
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static void delay_timer_cb(uv_timer_t* timer);
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static test_mode_t test_mode = DUPLEX;
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static int closed_connections = 0;
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static int valid_writable_wakeups = 0;
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static int spurious_writable_wakeups = 0;
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#if !defined(__sun) && !defined(_AIX) && !defined(__MVS__)
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static int disconnects = 0;
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#endif /* !__sun && !_AIX && !__MVS__ */
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static int got_eagain(void) {
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#ifdef _WIN32
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return WSAGetLastError() == WSAEWOULDBLOCK;
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#else
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return errno == EAGAIN
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|| errno == EINPROGRESS
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#ifdef EWOULDBLOCK
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|| errno == EWOULDBLOCK;
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#endif
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;
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#endif
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}
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static uv_os_sock_t create_bound_socket (struct sockaddr_in bind_addr) {
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uv_os_sock_t sock;
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int r;
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sock = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
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#ifdef _WIN32
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ASSERT(sock != INVALID_SOCKET);
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#else
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ASSERT(sock >= 0);
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#endif
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#ifndef _WIN32
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{
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/* Allow reuse of the port. */
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int yes = 1;
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r = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes);
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ASSERT(r == 0);
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}
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#endif
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r = bind(sock, (const struct sockaddr*) &bind_addr, sizeof bind_addr);
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ASSERT(r == 0);
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return sock;
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}
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static void close_socket(uv_os_sock_t sock) {
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int r;
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#ifdef _WIN32
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r = closesocket(sock);
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#else
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r = close(sock);
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#endif
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/* On FreeBSD close() can fail with ECONNRESET if the socket was shutdown by
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* the peer before all pending data was delivered.
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*/
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ASSERT(r == 0 || errno == ECONNRESET);
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}
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static connection_context_t* create_connection_context(
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uv_os_sock_t sock, int is_server_connection) {
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int r;
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connection_context_t* context;
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context = (connection_context_t*) malloc(sizeof *context);
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ASSERT(context != NULL);
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context->sock = sock;
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context->is_server_connection = is_server_connection;
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context->read = 0;
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context->sent = 0;
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context->open_handles = 0;
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context->events = 0;
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context->delayed_events = 0;
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context->got_fin = 0;
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context->sent_fin = 0;
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context->got_disconnect = 0;
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r = uv_poll_init_socket(uv_default_loop(), &context->poll_handle, sock);
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context->open_handles++;
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context->poll_handle.data = context;
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ASSERT(r == 0);
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r = uv_timer_init(uv_default_loop(), &context->timer_handle);
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context->open_handles++;
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context->timer_handle.data = context;
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ASSERT(r == 0);
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return context;
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}
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static void connection_close_cb(uv_handle_t* handle) {
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connection_context_t* context = (connection_context_t*) handle->data;
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if (--context->open_handles == 0) {
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if (test_mode == DUPLEX || context->is_server_connection) {
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ASSERT(context->read == TRANSFER_BYTES);
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} else {
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ASSERT(context->read == 0);
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}
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if (test_mode == DUPLEX || !context->is_server_connection) {
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ASSERT(context->sent == TRANSFER_BYTES);
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} else {
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ASSERT(context->sent == 0);
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}
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closed_connections++;
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free(context);
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}
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}
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static void destroy_connection_context(connection_context_t* context) {
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uv_close((uv_handle_t*) &context->poll_handle, connection_close_cb);
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uv_close((uv_handle_t*) &context->timer_handle, connection_close_cb);
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}
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static void connection_poll_cb(uv_poll_t* handle, int status, int events) {
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connection_context_t* context = (connection_context_t*) handle->data;
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unsigned int new_events;
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int r;
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ASSERT(status == 0);
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ASSERT(events & context->events);
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ASSERT(!(events & ~context->events));
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new_events = context->events;
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if (events & UV_READABLE) {
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int action = rand() % 7;
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switch (action) {
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case 0:
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case 1: {
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/* Read a couple of bytes. */
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static char buffer[74];
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do
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r = recv(context->sock, buffer, sizeof buffer, 0);
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while (r == -1 && errno == EINTR);
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ASSERT(r >= 0);
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if (r > 0) {
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context->read += r;
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} else {
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/* Got FIN. */
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context->got_fin = 1;
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new_events &= ~UV_READABLE;
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}
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break;
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}
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case 2:
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case 3: {
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/* Read until EAGAIN. */
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static char buffer[931];
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for (;;) {
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do
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r = recv(context->sock, buffer, sizeof buffer, 0);
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while (r == -1 && errno == EINTR);
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if (r <= 0)
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break;
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context->read += r;
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}
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if (r == 0) {
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/* Got FIN. */
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context->got_fin = 1;
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new_events &= ~UV_READABLE;
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} else {
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ASSERT(got_eagain());
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}
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break;
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}
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case 4:
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/* Ignore. */
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break;
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case 5:
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/* Stop reading for a while. Restart in timer callback. */
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new_events &= ~UV_READABLE;
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if (!uv_is_active((uv_handle_t*) &context->timer_handle)) {
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context->delayed_events = UV_READABLE;
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uv_timer_start(&context->timer_handle, delay_timer_cb, 10, 0);
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} else {
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context->delayed_events |= UV_READABLE;
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}
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break;
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case 6:
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/* Fudge with the event mask. */
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uv_poll_start(&context->poll_handle, UV_WRITABLE, connection_poll_cb);
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uv_poll_start(&context->poll_handle, UV_READABLE, connection_poll_cb);
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context->events = UV_READABLE;
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break;
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default:
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ASSERT(0);
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}
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}
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if (events & UV_WRITABLE) {
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if (context->sent < TRANSFER_BYTES &&
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!(test_mode == UNIDIRECTIONAL && context->is_server_connection)) {
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/* We have to send more bytes. */
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int action = rand() % 7;
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switch (action) {
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case 0:
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case 1: {
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/* Send a couple of bytes. */
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static char buffer[103];
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int send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer);
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ASSERT(send_bytes > 0);
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do
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r = send(context->sock, buffer, send_bytes, 0);
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while (r == -1 && errno == EINTR);
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if (r < 0) {
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ASSERT(got_eagain());
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spurious_writable_wakeups++;
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break;
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}
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ASSERT(r > 0);
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context->sent += r;
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valid_writable_wakeups++;
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break;
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}
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case 2:
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case 3: {
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/* Send until EAGAIN. */
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static char buffer[1234];
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int send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer);
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ASSERT(send_bytes > 0);
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do
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r = send(context->sock, buffer, send_bytes, 0);
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while (r == -1 && errno == EINTR);
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if (r < 0) {
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ASSERT(got_eagain());
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spurious_writable_wakeups++;
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break;
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}
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ASSERT(r > 0);
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valid_writable_wakeups++;
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context->sent += r;
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while (context->sent < TRANSFER_BYTES) {
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send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer);
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ASSERT(send_bytes > 0);
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do
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r = send(context->sock, buffer, send_bytes, 0);
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while (r == -1 && errno == EINTR);
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ASSERT(r != 0);
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if (r < 0) {
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ASSERT(got_eagain());
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break;
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}
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context->sent += r;
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}
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break;
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}
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case 4:
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/* Ignore. */
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break;
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case 5:
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/* Stop sending for a while. Restart in timer callback. */
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new_events &= ~UV_WRITABLE;
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if (!uv_is_active((uv_handle_t*) &context->timer_handle)) {
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context->delayed_events = UV_WRITABLE;
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uv_timer_start(&context->timer_handle, delay_timer_cb, 100, 0);
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} else {
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context->delayed_events |= UV_WRITABLE;
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}
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break;
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case 6:
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/* Fudge with the event mask. */
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uv_poll_start(&context->poll_handle,
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UV_READABLE,
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connection_poll_cb);
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uv_poll_start(&context->poll_handle,
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UV_WRITABLE,
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connection_poll_cb);
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context->events = UV_WRITABLE;
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break;
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default:
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ASSERT(0);
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}
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} else {
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/* Nothing more to write. Send FIN. */
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int r;
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#ifdef _WIN32
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r = shutdown(context->sock, SD_SEND);
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#else
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r = shutdown(context->sock, SHUT_WR);
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#endif
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ASSERT(r == 0);
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context->sent_fin = 1;
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new_events &= ~UV_WRITABLE;
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}
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}
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#if !defined(__sun) && !defined(_AIX) && !defined(__MVS__)
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if (events & UV_DISCONNECT) {
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context->got_disconnect = 1;
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++disconnects;
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new_events &= ~UV_DISCONNECT;
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}
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if (context->got_fin && context->sent_fin && context->got_disconnect) {
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#else /* __sun && _AIX && __MVS__ */
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if (context->got_fin && context->sent_fin) {
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#endif /* !__sun && !_AIX && !__MVS__ */
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/* Sent and received FIN. Close and destroy context. */
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close_socket(context->sock);
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destroy_connection_context(context);
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context->events = 0;
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} else if (new_events != context->events) {
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/* Poll mask changed. Call uv_poll_start again. */
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context->events = new_events;
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uv_poll_start(handle, new_events, connection_poll_cb);
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}
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/* Assert that uv_is_active works correctly for poll handles. */
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if (context->events != 0) {
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ASSERT(1 == uv_is_active((uv_handle_t*) handle));
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} else {
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ASSERT(0 == uv_is_active((uv_handle_t*) handle));
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}
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}
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static void delay_timer_cb(uv_timer_t* timer) {
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connection_context_t* context = (connection_context_t*) timer->data;
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int r;
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/* Timer should auto stop. */
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ASSERT(0 == uv_is_active((uv_handle_t*) timer));
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/* Add the requested events to the poll mask. */
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ASSERT(context->delayed_events != 0);
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context->events |= context->delayed_events;
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context->delayed_events = 0;
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r = uv_poll_start(&context->poll_handle,
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context->events,
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connection_poll_cb);
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ASSERT(r == 0);
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}
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static server_context_t* create_server_context(
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uv_os_sock_t sock) {
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int r;
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server_context_t* context;
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context = (server_context_t*) malloc(sizeof *context);
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ASSERT(context != NULL);
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context->sock = sock;
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context->connections = 0;
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r = uv_poll_init_socket(uv_default_loop(), &context->poll_handle, sock);
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context->poll_handle.data = context;
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ASSERT(r == 0);
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return context;
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}
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static void server_close_cb(uv_handle_t* handle) {
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server_context_t* context = (server_context_t*) handle->data;
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free(context);
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}
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static void destroy_server_context(server_context_t* context) {
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uv_close((uv_handle_t*) &context->poll_handle, server_close_cb);
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}
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static void server_poll_cb(uv_poll_t* handle, int status, int events) {
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server_context_t* server_context = (server_context_t*)
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handle->data;
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connection_context_t* connection_context;
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struct sockaddr_in addr;
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socklen_t addr_len;
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uv_os_sock_t sock;
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int r;
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addr_len = sizeof addr;
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sock = accept(server_context->sock, (struct sockaddr*) &addr, &addr_len);
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#ifdef _WIN32
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ASSERT(sock != INVALID_SOCKET);
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#else
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ASSERT(sock >= 0);
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#endif
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connection_context = create_connection_context(sock, 1);
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connection_context->events = UV_READABLE | UV_WRITABLE | UV_DISCONNECT;
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r = uv_poll_start(&connection_context->poll_handle,
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UV_READABLE | UV_WRITABLE | UV_DISCONNECT,
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connection_poll_cb);
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ASSERT(r == 0);
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if (++server_context->connections == NUM_CLIENTS) {
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close_socket(server_context->sock);
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destroy_server_context(server_context);
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}
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}
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static void start_server(void) {
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server_context_t* context;
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struct sockaddr_in addr;
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uv_os_sock_t sock;
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int r;
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ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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sock = create_bound_socket(addr);
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context = create_server_context(sock);
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r = listen(sock, 100);
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ASSERT(r == 0);
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r = uv_poll_start(&context->poll_handle, UV_READABLE, server_poll_cb);
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ASSERT(r == 0);
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}
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static void start_client(void) {
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uv_os_sock_t sock;
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connection_context_t* context;
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struct sockaddr_in server_addr;
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struct sockaddr_in addr;
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int r;
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ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
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ASSERT(0 == uv_ip4_addr("0.0.0.0", 0, &addr));
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sock = create_bound_socket(addr);
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context = create_connection_context(sock, 0);
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context->events = UV_READABLE | UV_WRITABLE | UV_DISCONNECT;
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r = uv_poll_start(&context->poll_handle,
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UV_READABLE | UV_WRITABLE | UV_DISCONNECT,
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connection_poll_cb);
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ASSERT(r == 0);
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r = connect(sock, (struct sockaddr*) &server_addr, sizeof server_addr);
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ASSERT(r == 0 || got_eagain());
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}
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static void start_poll_test(void) {
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int i, r;
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#ifdef _WIN32
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{
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struct WSAData wsa_data;
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int r = WSAStartup(MAKEWORD(2, 2), &wsa_data);
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ASSERT(r == 0);
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}
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#endif
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start_server();
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|
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for (i = 0; i < NUM_CLIENTS; i++)
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start_client();
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|
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r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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ASSERT(r == 0);
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|
|
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/* Assert that at most five percent of the writable wakeups was spurious. */
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ASSERT(spurious_writable_wakeups == 0 ||
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(valid_writable_wakeups + spurious_writable_wakeups) /
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spurious_writable_wakeups > 20);
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|
|
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ASSERT(closed_connections == NUM_CLIENTS * 2);
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|
#if !defined(__sun) && !defined(_AIX) && !defined(__MVS__)
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ASSERT(disconnects == NUM_CLIENTS * 2);
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#endif
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MAKE_VALGRIND_HAPPY();
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|
}
|
|
|
|
|
|
/* Issuing a shutdown() on IBM i PASE with parameter SHUT_WR
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|
* also sends a normal close sequence to the partner program.
|
|
* This leads to timing issues and ECONNRESET failures in the
|
|
* test 'poll_duplex' and 'poll_unidirectional'.
|
|
*
|
|
* https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_74/apis/shutdn.htm
|
|
*/
|
|
TEST_IMPL(poll_duplex) {
|
|
#if defined(NO_SELF_CONNECT)
|
|
RETURN_SKIP(NO_SELF_CONNECT);
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|
#elif defined(__PASE__)
|
|
RETURN_SKIP("API shutdown() may lead to timing issue on IBM i PASE");
|
|
#endif
|
|
test_mode = DUPLEX;
|
|
start_poll_test();
|
|
return 0;
|
|
}
|
|
|
|
|
|
TEST_IMPL(poll_unidirectional) {
|
|
#if defined(NO_SELF_CONNECT)
|
|
RETURN_SKIP(NO_SELF_CONNECT);
|
|
#elif defined(__PASE__)
|
|
RETURN_SKIP("API shutdown() may lead to timing issue on IBM i PASE");
|
|
#endif
|
|
test_mode = UNIDIRECTIONAL;
|
|
start_poll_test();
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Windows won't let you open a directory so we open a file instead.
|
|
* OS X lets you poll a file so open the $PWD instead. Both fail
|
|
* on Linux so it doesn't matter which one we pick. Both succeed
|
|
* on FreeBSD, Solaris and AIX so skip the test on those platforms.
|
|
*/
|
|
TEST_IMPL(poll_bad_fdtype) {
|
|
#if !defined(__DragonFly__) && !defined(__FreeBSD__) && !defined(__sun) && \
|
|
!defined(_AIX) && !defined(__MVS__) && !defined(__FreeBSD_kernel__) && \
|
|
!defined(__OpenBSD__) && !defined(__CYGWIN__) && !defined(__MSYS__) && \
|
|
!defined(__NetBSD__)
|
|
uv_poll_t poll_handle;
|
|
int fd;
|
|
|
|
#if defined(_WIN32)
|
|
fd = open("test/fixtures/empty_file", O_RDONLY);
|
|
#else
|
|
fd = open(".", O_RDONLY);
|
|
#endif
|
|
ASSERT(fd != -1);
|
|
ASSERT(0 != uv_poll_init(uv_default_loop(), &poll_handle, fd));
|
|
ASSERT(0 == close(fd));
|
|
#endif
|
|
|
|
MAKE_VALGRIND_HAPPY();
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef __linux__
|
|
TEST_IMPL(poll_nested_epoll) {
|
|
uv_poll_t poll_handle;
|
|
int fd;
|
|
|
|
fd = epoll_create(1);
|
|
ASSERT(fd != -1);
|
|
|
|
ASSERT(0 == uv_poll_init(uv_default_loop(), &poll_handle, fd));
|
|
ASSERT(0 == uv_poll_start(&poll_handle, UV_READABLE, (uv_poll_cb) abort));
|
|
ASSERT(0 != uv_run(uv_default_loop(), UV_RUN_NOWAIT));
|
|
|
|
uv_close((uv_handle_t*) &poll_handle, NULL);
|
|
ASSERT(0 == uv_run(uv_default_loop(), UV_RUN_DEFAULT));
|
|
ASSERT(0 == close(fd));
|
|
|
|
MAKE_VALGRIND_HAPPY();
|
|
return 0;
|
|
}
|
|
#endif /* __linux__ */
|
|
|
|
|
|
#ifdef UV_HAVE_KQUEUE
|
|
TEST_IMPL(poll_nested_kqueue) {
|
|
uv_poll_t poll_handle;
|
|
int fd;
|
|
|
|
fd = kqueue();
|
|
ASSERT(fd != -1);
|
|
|
|
ASSERT(0 == uv_poll_init(uv_default_loop(), &poll_handle, fd));
|
|
ASSERT(0 == uv_poll_start(&poll_handle, UV_READABLE, (uv_poll_cb) abort));
|
|
ASSERT(0 != uv_run(uv_default_loop(), UV_RUN_NOWAIT));
|
|
|
|
uv_close((uv_handle_t*) &poll_handle, NULL);
|
|
ASSERT(0 == uv_run(uv_default_loop(), UV_RUN_DEFAULT));
|
|
ASSERT(0 == close(fd));
|
|
|
|
MAKE_VALGRIND_HAPPY();
|
|
return 0;
|
|
}
|
|
#endif /* UV_HAVE_KQUEUE */
|