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Diffstat (limited to 'test/bench_cascade.c')
| -rw-r--r-- | test/bench_cascade.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/test/bench_cascade.c b/test/bench_cascade.c deleted file mode 100644 index 2d85cc1..0000000 --- a/test/bench_cascade.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * Copyright 2007-2012 Niels Provos and Nick Mathewson - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "event2/event-config.h" - -#include <sys/types.h> -#include <sys/stat.h> -#ifdef EVENT__HAVE_SYS_TIME_H -#include <sys/time.h> -#endif -#ifdef _WIN32 -#define WIN32_LEAN_AND_MEAN -#include <windows.h> -#else -#include <sys/socket.h> -#include <sys/resource.h> -#endif -#include <signal.h> -#include <fcntl.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#ifdef EVENT__HAVE_UNISTD_H -#include <unistd.h> -#endif -#include <errno.h> -#include <getopt.h> -#include <event.h> -#include <evutil.h> - -/* - * This benchmark tests how quickly we can propagate a write down a chain - * of socket pairs. We start by writing to the first socket pair and all - * events will fire subsequently until the last socket pair has been reached - * and the benchmark terminates. - */ - -static int fired; -static evutil_socket_t *pipes; -static struct event *events; - -static void -read_cb(evutil_socket_t fd, short which, void *arg) -{ - char ch; - evutil_socket_t sock = (evutil_socket_t)(ev_intptr_t)arg; - - (void) recv(fd, &ch, sizeof(ch), 0); - if (sock >= 0) { - if (send(sock, "e", 1, 0) < 0) - perror("send"); - } - fired++; -} - -static struct timeval * -run_once(int num_pipes) -{ - int i; - evutil_socket_t *cp; - static struct timeval ts, te, tv_timeout; - - events = (struct event *)calloc(num_pipes, sizeof(struct event)); - pipes = (evutil_socket_t *)calloc(num_pipes * 2, sizeof(evutil_socket_t)); - - if (events == NULL || pipes == NULL) { - perror("malloc"); - exit(1); - } - - for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) { - if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, cp) == -1) { - perror("socketpair"); - exit(1); - } - } - - /* measurements includes event setup */ - evutil_gettimeofday(&ts, NULL); - - /* provide a default timeout for events */ - evutil_timerclear(&tv_timeout); - tv_timeout.tv_sec = 60; - - for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) { - evutil_socket_t fd = i < num_pipes - 1 ? cp[3] : -1; - event_set(&events[i], cp[0], EV_READ, read_cb, - (void *)(ev_intptr_t)fd); - event_add(&events[i], &tv_timeout); - } - - fired = 0; - - /* kick everything off with a single write */ - if (send(pipes[1], "e", 1, 0) < 0) - perror("send"); - - event_dispatch(); - - evutil_gettimeofday(&te, NULL); - evutil_timersub(&te, &ts, &te); - - for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) { - event_del(&events[i]); - evutil_closesocket(cp[0]); - evutil_closesocket(cp[1]); - } - - free(pipes); - free(events); - - return (&te); -} - -int -main(int argc, char **argv) -{ -#ifdef HAVE_SETRLIMIT - struct rlimit rl; -#endif - int i, c; - struct timeval *tv; - - int num_pipes = 100; -#ifdef _WIN32 - WSADATA WSAData; - WSAStartup(0x101, &WSAData); -#endif - - while ((c = getopt(argc, argv, "n:")) != -1) { - switch (c) { - case 'n': - num_pipes = atoi(optarg); - break; - default: - fprintf(stderr, "Illegal argument \"%c\"\n", c); - exit(1); - } - } - -#ifdef HAVE_SETRLIMIT - rl.rlim_cur = rl.rlim_max = num_pipes * 2 + 50; - if (setrlimit(RLIMIT_NOFILE, &rl) == -1) { - perror("setrlimit"); - exit(1); - } -#endif - - event_init(); - - for (i = 0; i < 25; i++) { - tv = run_once(num_pipes); - if (tv == NULL) - exit(1); - fprintf(stdout, "%ld\n", - tv->tv_sec * 1000000L + tv->tv_usec); - } - -#ifdef _WIN32 - WSACleanup(); -#endif - - exit(0); -} |