1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: multiacc.c
*
* Description:
* This test creates multiple threads that accept on the
* same listening socket.
*/
#include "nspr.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUM_SERVER_THREADS 10
static int num_server_threads = NUM_SERVER_THREADS;
static PRThreadScope thread_scope = PR_GLOBAL_THREAD;
static PRBool exit_flag = PR_FALSE;
static void ServerThreadFunc(void *arg)
{
PRFileDesc *listenSock = (PRFileDesc *) arg;
PRFileDesc *acceptSock;
PRErrorCode err;
PRStatus status;
while (!exit_flag) {
acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
if (NULL == acceptSock) {
err = PR_GetError();
if (PR_PENDING_INTERRUPT_ERROR == err) {
printf("server thread is interrupted\n");
fflush(stdout);
continue;
}
fprintf(stderr, "PR_Accept failed: %d\n", err);
exit(1);
}
status = PR_Close(acceptSock);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
}
int main(int argc, char **argv)
{
PRNetAddr serverAddr;
PRFileDesc *dummySock;
PRFileDesc *listenSock;
PRFileDesc *clientSock;
PRThread *dummyThread;
PRThread **serverThreads;
PRStatus status;
PRUint16 port;
int idx;
PRInt32 nbytes;
char buf[1024];
serverThreads = (PRThread **)
PR_Malloc(num_server_threads * sizeof(PRThread *));
if (NULL == serverThreads) {
fprintf(stderr, "PR_Malloc failed\n");
exit(1);
}
/*
* Create a dummy listening socket and have the first
* (dummy) thread listen on it. This is to ensure that
* the first thread becomes the I/O continuation thread
* in the pthreads implementation (see ptio.c) and remains
* so throughout the test, so that we never have to
* recycle the I/O continuation thread.
*/
dummySock = PR_NewTCPSocket();
if (NULL == dummySock) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
memset(&serverAddr, 0, sizeof(serverAddr));
status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_InitializeNetAddr failed\n");
exit(1);
}
status = PR_Bind(dummySock, &serverAddr);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Bind failed\n");
exit(1);
}
status = PR_Listen(dummySock, 5);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Listen failed\n");
exit(1);
}
listenSock = PR_NewTCPSocket();
if (NULL == listenSock) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
memset(&serverAddr, 0, sizeof(serverAddr));
status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_InitializeNetAddr failed\n");
exit(1);
}
status = PR_Bind(listenSock, &serverAddr);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Bind failed\n");
exit(1);
}
status = PR_GetSockName(listenSock, &serverAddr);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_GetSockName failed\n");
exit(1);
}
port = PR_ntohs(serverAddr.inet.port);
status = PR_Listen(listenSock, 5);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Listen failed\n");
exit(1);
}
printf("creating dummy thread\n");
fflush(stdout);
dummyThread = PR_CreateThread(PR_USER_THREAD,
ServerThreadFunc, dummySock, PR_PRIORITY_NORMAL,
thread_scope, PR_JOINABLE_THREAD, 0);
if (NULL == dummyThread) {
fprintf(stderr, "PR_CreateThread failed\n");
exit(1);
}
printf("sleeping one second before creating server threads\n");
fflush(stdout);
PR_Sleep(PR_SecondsToInterval(1));
for (idx = 0; idx < num_server_threads; idx++) {
serverThreads[idx] = PR_CreateThread(PR_USER_THREAD,
ServerThreadFunc, listenSock, PR_PRIORITY_NORMAL,
thread_scope, PR_JOINABLE_THREAD, 0);
if (NULL == serverThreads[idx]) {
fprintf(stderr, "PR_CreateThread failed\n");
exit(1);
}
}
memset(&serverAddr, 0, sizeof(serverAddr));
PR_InitializeNetAddr(PR_IpAddrLoopback, port, &serverAddr);
clientSock = PR_NewTCPSocket();
if (NULL == clientSock) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
printf("sleeping one second before connecting\n");
fflush(stdout);
PR_Sleep(PR_SecondsToInterval(1));
status = PR_Connect(clientSock, &serverAddr, PR_INTERVAL_NO_TIMEOUT);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Connect failed\n");
exit(1);
}
nbytes = PR_Read(clientSock, buf, sizeof(buf));
if (nbytes != 0) {
fprintf(stderr, "expected 0 bytes but got %d bytes\n", nbytes);
exit(1);
}
status = PR_Close(clientSock);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
printf("sleeping one second before shutting down server threads\n");
fflush(stdout);
PR_Sleep(PR_SecondsToInterval(1));
exit_flag = PR_TRUE;
status = PR_Interrupt(dummyThread);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Interrupt failed\n");
exit(1);
}
status = PR_JoinThread(dummyThread);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_JoinThread failed\n");
exit(1);
}
for (idx = 0; idx < num_server_threads; idx++) {
status = PR_Interrupt(serverThreads[idx]);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Interrupt failed\n");
exit(1);
}
status = PR_JoinThread(serverThreads[idx]);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_JoinThread failed\n");
exit(1);
}
}
PR_Free(serverThreads);
status = PR_Close(dummySock);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
status = PR_Close(listenSock);
if (PR_FAILURE == status) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
printf("PASS\n");
return 0;
}
|
