libuv-svace-build

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

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

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

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

92
static void pinger_write_cb(uv_write_t* req, int status) {
93
  ASSERT_OK(status);
94

95
  free(req);
96
}
97

98

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

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

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

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

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

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