1 /* Copyright libuv project 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 typedef struct {
32 int pongs;
33 int state;
34 uv_udp_t udp;
35 struct sockaddr_in server_addr;
36 } pinger_t;
37
38 typedef struct buf_s {
39 uv_buf_t uv_buf_t;
40 struct buf_s* next;
41 } buf_t;
42
43 static char PING[] = "PING\n";
44
45 static uv_loop_t* loop;
46
47 static int completed_pingers;
48 static unsigned long completed_pings;
49 static int64_t start_time;
50
51
buf_alloc(uv_handle_t * tcp,size_t size,uv_buf_t * buf)52 static void buf_alloc(uv_handle_t* tcp, size_t size, uv_buf_t* buf) {
53 static char slab[64 * 1024];
54 buf->base = slab;
55 buf->len = sizeof(slab);
56 }
57
58
buf_free(const uv_buf_t * buf)59 static void buf_free(const uv_buf_t* buf) {
60 }
61
62
pinger_close_cb(uv_handle_t * handle)63 static void pinger_close_cb(uv_handle_t* handle) {
64 pinger_t* pinger;
65
66 pinger = (pinger_t*)handle->data;
67 #if DEBUG
68 fprintf(stderr, "ping_pongs: %d roundtrips/s\n",
69 pinger->pongs / (TIME / 1000));
70 #endif
71
72 completed_pings += pinger->pongs;
73 completed_pingers++;
74 free(pinger);
75 }
76
pinger_write_ping(pinger_t * pinger)77 static void pinger_write_ping(pinger_t* pinger) {
78 uv_buf_t buf;
79 int r;
80
81 buf = uv_buf_init(PING, sizeof(PING) - 1);
82 r = uv_udp_try_send(&pinger->udp, &buf, 1,
83 (const struct sockaddr*) &pinger->server_addr);
84 if (r < 0)
85 FATAL("uv_udp_send failed");
86 }
87
pinger_read_cb(uv_udp_t * udp,ssize_t nread,const uv_buf_t * buf,const struct sockaddr * addr,unsigned flags)88 static void pinger_read_cb(uv_udp_t* udp,
89 ssize_t nread,
90 const uv_buf_t* buf,
91 const struct sockaddr* addr,
92 unsigned flags) {
93 ssize_t i;
94 pinger_t* pinger;
95 pinger = (pinger_t*)udp->data;
96
97 /* No data here means something went wrong */
98 ASSERT_GT(nread, 0);
99
100 /* Now we count the pings */
101 for (i = 0; i < nread; i++) {
102 ASSERT_EQ(buf->base[i], PING[pinger->state]);
103 pinger->state = (pinger->state + 1) % (sizeof(PING) - 1);
104 if (pinger->state == 0) {
105 pinger->pongs++;
106 if (uv_now(loop) - start_time > TIME) {
107 uv_close((uv_handle_t*)udp, pinger_close_cb);
108 break;
109 }
110 pinger_write_ping(pinger);
111 }
112 }
113
114 if (buf && !(flags & UV_UDP_MMSG_CHUNK))
115 buf_free(buf);
116 }
117
udp_pinger_new(void)118 static void udp_pinger_new(void) {
119 pinger_t* pinger = malloc(sizeof(*pinger));
120 int r;
121
122 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &pinger->server_addr));
123 pinger->state = 0;
124 pinger->pongs = 0;
125
126 /* Try to do NUM_PINGS ping-pongs (connection-less). */
127 r = uv_udp_init(loop, &pinger->udp);
128 ASSERT_OK(r);
129 r = uv_udp_bind(&pinger->udp, (const struct sockaddr*) &pinger->server_addr, 0);
130 ASSERT_OK(r);
131
132 pinger->udp.data = pinger;
133
134 /* Start pinging */
135 if (0 != uv_udp_recv_start(&pinger->udp, buf_alloc, pinger_read_cb)) {
136 FATAL("uv_udp_read_start failed");
137 }
138 pinger_write_ping(pinger);
139 }
140
ping_udp(unsigned pingers)141 static int ping_udp(unsigned pingers) {
142 unsigned i;
143
144 loop = uv_default_loop();
145 start_time = uv_now(loop);
146
147 for (i = 0; i < pingers; ++i) {
148 udp_pinger_new();
149 }
150 uv_run(loop, UV_RUN_DEFAULT);
151 ASSERT_GE(completed_pingers, 1);
152
153 fprintf(stderr, "ping_pongs: %d pingers, ~ %lu roundtrips/s\n",
154 completed_pingers, completed_pings / (TIME/1000));
155
156 MAKE_VALGRIND_HAPPY(loop);
157 return 0;
158 }
159
160 #define X(PINGERS) \
161 BENCHMARK_IMPL(ping_udp##PINGERS) {\
162 return ping_udp(PINGERS); \
163 }
164
165 X(1)
166 X(10)
167 X(100)
168
169 #undef X
170
