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/* 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.
*/
#include "uv.h"
#include "task.h"
#include <stdlib.h>
#include <stdio.h>
/* Run the benchmark for this many ms */
#define TIME 5000
typedef struct {
int pongs;
int state;
uv_tcp_t tcp;
uv_connect_t connect_req;
uv_shutdown_t shutdown_req;
} pinger_t;
typedef struct buf_s {
uv_buf_t uv_buf_t;
struct buf_s* next;
} buf_t;
static char PING[] = "PING\n";
static uv_loop_t* loop;
static buf_t* buf_freelist = NULL;
static int pinger_shutdown_cb_called;
static int completed_pingers = 0;
static int64_t start_time;
static void buf_alloc(uv_handle_t* tcp, size_t size, uv_buf_t* buf) {
buf_t* ab;
ab = buf_freelist;
if (ab != NULL)
buf_freelist = ab->next;
else {
ab = malloc(size + sizeof(*ab));
ab->uv_buf_t.len = size;
ab->uv_buf_t.base = (char*) (ab + 1);
}
*buf = ab->uv_buf_t;
}
static void buf_free(const uv_buf_t* buf) {
buf_t* ab = (buf_t*) buf->base - 1;
ab->next = buf_freelist;
buf_freelist = ab;
}
static void pinger_close_cb(uv_handle_t* handle) {
pinger_t* pinger;
pinger = (pinger_t*)handle->data;
LOGF("ping_pongs: %d roundtrips/s\n", (1000 * pinger->pongs) / TIME);
free(pinger);
completed_pingers++;
}
static void pinger_write_cb(uv_write_t* req, int status) {
ASSERT(status == 0);
free(req);
}
static void pinger_write_ping(pinger_t* pinger) {
uv_write_t* req;
uv_buf_t buf;
buf = uv_buf_init(PING, sizeof(PING) - 1);
req = malloc(sizeof *req);
if (uv_write(req, (uv_stream_t*) &pinger->tcp, &buf, 1, pinger_write_cb)) {
FATAL("uv_write failed");
}
}
static void pinger_shutdown_cb(uv_shutdown_t* req, int status) {
ASSERT(status == 0);
pinger_shutdown_cb_called++;
/*
* The close callback has not been triggered yet. We must wait for EOF
* until we close the connection.
*/
ASSERT(completed_pingers == 0);
}
static void pinger_read_cb(uv_stream_t* tcp,
ssize_t nread,
const uv_buf_t* buf) {
ssize_t i;
pinger_t* pinger;
pinger = (pinger_t*)tcp->data;
if (nread < 0) {
ASSERT(nread == UV_EOF);
if (buf->base) {
buf_free(buf);
}
ASSERT(pinger_shutdown_cb_called == 1);
uv_close((uv_handle_t*)tcp, pinger_close_cb);
return;
}
/* Now we count the pings */
for (i = 0; i < nread; i++) {
ASSERT(buf->base[i] == PING[pinger->state]);
pinger->state = (pinger->state + 1) % (sizeof(PING) - 1);
if (pinger->state == 0) {
pinger->pongs++;
if (uv_now(loop) - start_time > TIME) {
uv_shutdown(&pinger->shutdown_req,
(uv_stream_t*) tcp,
pinger_shutdown_cb);
break;
} else {
pinger_write_ping(pinger);
}
}
}
buf_free(buf);
}
static void pinger_connect_cb(uv_connect_t* req, int status) {
pinger_t *pinger = (pinger_t*)req->handle->data;
ASSERT(status == 0);
pinger_write_ping(pinger);
if (uv_read_start(req->handle, buf_alloc, pinger_read_cb)) {
FATAL("uv_read_start failed");
}
}
static void pinger_new(void) {
struct sockaddr_in client_addr;
struct sockaddr_in server_addr;
pinger_t *pinger;
int r;
ASSERT(0 == uv_ip4_addr("0.0.0.0", 0, &client_addr));
ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
pinger = malloc(sizeof(*pinger));
pinger->state = 0;
pinger->pongs = 0;
/* Try to connect to the server and do NUM_PINGS ping-pongs. */
r = uv_tcp_init(loop, &pinger->tcp);
ASSERT(!r);
pinger->tcp.data = pinger;
ASSERT(0 == uv_tcp_bind(&pinger->tcp,
(const struct sockaddr*) &client_addr,
0));
r = uv_tcp_connect(&pinger->connect_req,
&pinger->tcp,
(const struct sockaddr*) &server_addr,
pinger_connect_cb);
ASSERT(!r);
}
BENCHMARK_IMPL(ping_pongs) {
loop = uv_default_loop();
start_time = uv_now(loop);
pinger_new();
uv_run(loop, UV_RUN_DEFAULT);
ASSERT(completed_pingers == 1);
MAKE_VALGRIND_HAPPY();
return 0;
}