1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 #include "test.h"
23
24 #include "testutil.h"
25 #include "warnless.h"
26 #include "memdebug.h"
27
28 #ifdef HAVE_PTHREAD_H
29 #include <pthread.h>
30 #include <time.h>
31
32 /* number of threads to fire up in parallel */
33 #define NUM_THREADS 67
34
35 /* for how many seconds each thread will loop */
36 #define RUN_FOR_SECONDS 7
37
38 static pthread_mutex_t connlock;
39
write_db(void * ptr,size_t size,size_t nmemb,void * data)40 static size_t write_db(void *ptr, size_t size, size_t nmemb, void *data)
41 {
42 /* not interested in the downloaded bytes, return the size */
43 (void)ptr; /* unused */
44 (void)data; /* unused */
45 return (size_t)(size * nmemb);
46 }
47
lock_cb(CURL * handle,curl_lock_data data,curl_lock_access access,void * userptr)48 static void lock_cb(CURL *handle, curl_lock_data data,
49 curl_lock_access access, void *userptr)
50 {
51 (void)access; /* unused */
52 (void)userptr; /* unused */
53 (void)handle; /* unused */
54 (void)data; /* unused */
55 pthread_mutex_lock(&connlock);
56 }
57
unlock_cb(CURL * handle,curl_lock_data data,void * userptr)58 static void unlock_cb(CURL *handle, curl_lock_data data,
59 void *userptr)
60 {
61 (void)userptr; /* unused */
62 (void)handle; /* unused */
63 (void)data; /* unused */
64 pthread_mutex_unlock(&connlock);
65 }
66
init_locks(void)67 static void init_locks(void)
68 {
69 pthread_mutex_init(&connlock, NULL);
70 }
71
kill_locks(void)72 static void kill_locks(void)
73 {
74 pthread_mutex_destroy(&connlock);
75 }
76
77 struct initurl {
78 const char *url;
79 CURLSH *share;
80 int threadno;
81 };
82
run_thread(void * ptr)83 static void *run_thread(void *ptr)
84 {
85 struct initurl *u = (struct initurl *)ptr;
86 int i;
87 time_t end = time(NULL) + RUN_FOR_SECONDS;
88
89 for(i = 0; time(NULL) < end; i++) {
90 CURL *curl = curl_easy_init();
91 curl_easy_setopt(curl, CURLOPT_URL, u->url);
92 curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
93 curl_easy_setopt(curl, CURLOPT_SHARE, u->share);
94 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_db);
95 curl_easy_perform(curl); /* ignores error */
96 curl_easy_cleanup(curl);
97 fprintf(stderr, "Thread %d transfer %d\n", u->threadno, i);
98 }
99
100 return NULL;
101 }
102
test(char * URL)103 int test(char *URL)
104 {
105 pthread_t tid[NUM_THREADS];
106 int i;
107 CURLSH *share;
108 struct initurl url[NUM_THREADS];
109
110 /* Must initialize libcurl before any threads are started */
111 curl_global_init(CURL_GLOBAL_ALL);
112
113 share = curl_share_init();
114 curl_share_setopt(share, CURLSHOPT_LOCKFUNC, lock_cb);
115 curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, unlock_cb);
116 curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
117
118 init_locks();
119
120 for(i = 0; i< NUM_THREADS; i++) {
121 int error;
122 url[i].url = URL;
123 url[i].share = share;
124 url[i].threadno = i;
125 error = pthread_create(&tid[i], NULL, run_thread, &url[i]);
126 if(0 != error)
127 fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
128 else
129 fprintf(stderr, "Thread %d, gets %s\n", i, URL);
130 }
131
132 /* now wait for all threads to terminate */
133 for(i = 0; i< NUM_THREADS; i++) {
134 pthread_join(tid[i], NULL);
135 fprintf(stderr, "Thread %d terminated\n", i);
136 }
137
138 kill_locks();
139
140 curl_share_cleanup(share);
141 curl_global_cleanup();
142 return 0;
143 }
144
145 #else /* without pthread, this test doesn't work */
test(char * URL)146 int test(char *URL)
147 {
148 (void)URL;
149 return 0;
150 }
151 #endif
152