1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 #include "uv.h"
23 #include "task.h"
24
25 #include <stdlib.h>
26 #include <stdio.h>
27
28 /* Run the benchmark for this many ms */
29 #define TIME 5000
30
31
32 typedef struct {
33 int pongs;
34 int state;
35 uv_tcp_t tcp;
36 uv_connect_t connect_req;
37 uv_shutdown_t shutdown_req;
38 } pinger_t;
39
40 typedef struct buf_s {
41 uv_buf_t uv_buf_t;
42 struct buf_s* next;
43 } buf_t;
44
45
46 static char PING[] = "PING\n";
47
48 static uv_loop_t* loop;
49
50 static buf_t* buf_freelist = NULL;
51 static int pinger_shutdown_cb_called;
52 static int completed_pingers = 0;
53 static int64_t start_time;
54
55
buf_alloc(uv_handle_t * tcp,size_t size,uv_buf_t * buf)56 static void buf_alloc(uv_handle_t* tcp, size_t size, uv_buf_t* buf) {
57 buf_t* ab;
58
59 ab = buf_freelist;
60 if (ab != NULL)
61 buf_freelist = ab->next;
62 else {
63 ab = malloc(size + sizeof(*ab));
64 ab->uv_buf_t.len = size;
65 ab->uv_buf_t.base = (char*) (ab + 1);
66 }
67
68 *buf = ab->uv_buf_t;
69 }
70
71
buf_free(const uv_buf_t * buf)72 static void buf_free(const uv_buf_t* buf) {
73 buf_t* ab = (buf_t*) buf->base - 1;
74 ab->next = buf_freelist;
75 buf_freelist = ab;
76 }
77
78
pinger_close_cb(uv_handle_t * handle)79 static void pinger_close_cb(uv_handle_t* handle) {
80 pinger_t* pinger;
81
82 pinger = (pinger_t*)handle->data;
83 fprintf(stderr, "ping_pongs: %d roundtrips/s\n", (1000 * pinger->pongs) / TIME);
84 fflush(stderr);
85
86 free(pinger);
87
88 completed_pingers++;
89 }
90
91
pinger_write_cb(uv_write_t * req,int status)92 static void pinger_write_cb(uv_write_t* req, int status) {
93 ASSERT_OK(status);
94
95 free(req);
96 }
97
98
pinger_write_ping(pinger_t * pinger)99 static void pinger_write_ping(pinger_t* pinger) {
100 uv_write_t* req;
101 uv_buf_t buf;
102
103 buf = uv_buf_init(PING, sizeof(PING) - 1);
104
105 req = malloc(sizeof *req);
106 if (uv_write(req, (uv_stream_t*) &pinger->tcp, &buf, 1, pinger_write_cb)) {
107 FATAL("uv_write failed");
108 }
109 }
110
111
pinger_shutdown_cb(uv_shutdown_t * req,int status)112 static void pinger_shutdown_cb(uv_shutdown_t* req, int status) {
113 ASSERT_OK(status);
114 pinger_shutdown_cb_called++;
115
116 /*
117 * The close callback has not been triggered yet. We must wait for EOF
118 * until we close the connection.
119 */
120 ASSERT_OK(completed_pingers);
121 }
122
123
pinger_read_cb(uv_stream_t * tcp,ssize_t nread,const uv_buf_t * buf)124 static void pinger_read_cb(uv_stream_t* tcp,
125 ssize_t nread,
126 const uv_buf_t* buf) {
127 ssize_t i;
128 pinger_t* pinger;
129
130 pinger = (pinger_t*)tcp->data;
131
132 if (nread < 0) {
133 ASSERT_EQ(nread, UV_EOF);
134
135 if (buf->base) {
136 buf_free(buf);
137 }
138
139 ASSERT_EQ(1, pinger_shutdown_cb_called);
140 uv_close((uv_handle_t*)tcp, pinger_close_cb);
141
142 return;
143 }
144
145 /* Now we count the pings */
146 for (i = 0; i < nread; i++) {
147 ASSERT_EQ(buf->base[i], PING[pinger->state]);
148 pinger->state = (pinger->state + 1) % (sizeof(PING) - 1);
149 if (pinger->state == 0) {
150 pinger->pongs++;
151 if (uv_now(loop) - start_time > TIME) {
152 uv_shutdown(&pinger->shutdown_req,
153 (uv_stream_t*) tcp,
154 pinger_shutdown_cb);
155 break;
156 } else {
157 pinger_write_ping(pinger);
158 }
159 }
160 }
161
162 buf_free(buf);
163 }
164
165
pinger_connect_cb(uv_connect_t * req,int status)166 static void pinger_connect_cb(uv_connect_t* req, int status) {
167 pinger_t *pinger = (pinger_t*)req->handle->data;
168
169 ASSERT_OK(status);
170
171 pinger_write_ping(pinger);
172
173 if (uv_read_start(req->handle, buf_alloc, pinger_read_cb)) {
174 FATAL("uv_read_start failed");
175 }
176 }
177
178
pinger_new(void)179 static void pinger_new(void) {
180 struct sockaddr_in client_addr;
181 struct sockaddr_in server_addr;
182 pinger_t *pinger;
183 int r;
184
185 ASSERT_OK(uv_ip4_addr("0.0.0.0", 0, &client_addr));
186 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
187 pinger = malloc(sizeof(*pinger));
188 pinger->state = 0;
189 pinger->pongs = 0;
190
191 /* Try to connect to the server and do NUM_PINGS ping-pongs. */
192 r = uv_tcp_init(loop, &pinger->tcp);
193 ASSERT(!r);
194
195 pinger->tcp.data = pinger;
196
197 ASSERT_OK(uv_tcp_bind(&pinger->tcp,
198 (const struct sockaddr*) &client_addr,
199 0));
200
201 r = uv_tcp_connect(&pinger->connect_req,
202 &pinger->tcp,
203 (const struct sockaddr*) &server_addr,
204 pinger_connect_cb);
205 ASSERT(!r);
206 }
207
208
BENCHMARK_IMPL(ping_pongs)209 BENCHMARK_IMPL(ping_pongs) {
210 loop = uv_default_loop();
211
212 start_time = uv_now(loop);
213
214 pinger_new();
215 uv_run(loop, UV_RUN_DEFAULT);
216
217 ASSERT_EQ(1, completed_pingers);
218
219 MAKE_VALGRIND_HAPPY(loop);
220 return 0;
221 }
222
