1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 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.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 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 #include "curl_setup.h"
26
27 #include <curl/curl.h>
28
29 #if defined(USE_THREADS_POSIX)
30 # ifdef HAVE_PTHREAD_H
31 # include <pthread.h>
32 # endif
33 #elif defined(USE_THREADS_WIN32)
34 # include <process.h>
35 #endif
36
37 #include "curl_threads.h"
38 #include "curl_memory.h"
39 /* The last #include file should be: */
40 #include "memdebug.h"
41
42 #if defined(USE_THREADS_POSIX)
43
44 struct Curl_actual_call {
45 unsigned int (*func)(void *);
46 void *arg;
47 };
48
curl_thread_create_thunk(void * arg)49 static void *curl_thread_create_thunk(void *arg)
50 {
51 struct Curl_actual_call *ac = arg;
52 unsigned int (*func)(void *) = ac->func;
53 void *real_arg = ac->arg;
54
55 free(ac);
56
57 (*func)(real_arg);
58
59 return 0;
60 }
61
Curl_thread_create(unsigned int (* func)(void *),void * arg)62 curl_thread_t Curl_thread_create(unsigned int (*func) (void *), void *arg)
63 {
64 curl_thread_t t = malloc(sizeof(pthread_t));
65 struct Curl_actual_call *ac = malloc(sizeof(struct Curl_actual_call));
66 if(!(ac && t))
67 goto err;
68
69 ac->func = func;
70 ac->arg = arg;
71
72 if(pthread_create(t, NULL, curl_thread_create_thunk, ac) != 0)
73 goto err;
74
75 return t;
76
77 err:
78 free(t);
79 free(ac);
80 return curl_thread_t_null;
81 }
82
Curl_thread_destroy(curl_thread_t hnd)83 void Curl_thread_destroy(curl_thread_t hnd)
84 {
85 if(hnd != curl_thread_t_null) {
86 pthread_detach(*hnd);
87 free(hnd);
88 }
89 }
90
Curl_thread_join(curl_thread_t * hnd)91 int Curl_thread_join(curl_thread_t *hnd)
92 {
93 int ret = (pthread_join(**hnd, NULL) == 0);
94
95 free(*hnd);
96 *hnd = curl_thread_t_null;
97
98 return ret;
99 }
100
101 #elif defined(USE_THREADS_WIN32)
102
103 /* !checksrc! disable SPACEBEFOREPAREN 1 */
Curl_thread_create(unsigned int (CURL_STDCALL * func)(void *),void * arg)104 curl_thread_t Curl_thread_create(unsigned int (CURL_STDCALL *func) (void *),
105 void *arg)
106 {
107 #ifdef _WIN32_WCE
108 typedef HANDLE curl_win_thread_handle_t;
109 #else
110 typedef uintptr_t curl_win_thread_handle_t;
111 #endif
112 curl_thread_t t;
113 curl_win_thread_handle_t thread_handle;
114 #ifdef _WIN32_WCE
115 thread_handle = CreateThread(NULL, 0, func, arg, 0, NULL);
116 #else
117 thread_handle = _beginthreadex(NULL, 0, func, arg, 0, NULL);
118 #endif
119 t = (curl_thread_t)thread_handle;
120 if((t == 0) || (t == LongToHandle(-1L))) {
121 #ifdef _WIN32_WCE
122 DWORD gle = GetLastError();
123 errno = ((gle == ERROR_ACCESS_DENIED ||
124 gle == ERROR_NOT_ENOUGH_MEMORY) ?
125 EACCES : EINVAL);
126 #endif
127 return curl_thread_t_null;
128 }
129 return t;
130 }
131
Curl_thread_destroy(curl_thread_t hnd)132 void Curl_thread_destroy(curl_thread_t hnd)
133 {
134 CloseHandle(hnd);
135 }
136
Curl_thread_join(curl_thread_t * hnd)137 int Curl_thread_join(curl_thread_t *hnd)
138 {
139 #if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_VISTA) || \
140 (_WIN32_WINNT < _WIN32_WINNT_VISTA)
141 int ret = (WaitForSingleObject(*hnd, INFINITE) == WAIT_OBJECT_0);
142 #else
143 int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);
144 #endif
145
146 Curl_thread_destroy(*hnd);
147
148 *hnd = curl_thread_t_null;
149
150 return ret;
151 }
152
153 #endif /* USE_THREADS_* */
154
