1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2020, 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 ***************************************************************************/
22
23#include "curl_setup.h"
24
25#include <curl/curl.h>
26
27#if defined(USE_THREADS_POSIX)
28# ifdef HAVE_PTHREAD_H
29# include <pthread.h>
30# endif
31#elif defined(USE_THREADS_WIN32)
32# ifdef HAVE_PROCESS_H
33# include <process.h>
34# endif
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
44struct Curl_actual_call {
45 unsigned int (*func)(void *);
46 void *arg;
47};
48
49static 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
62curl_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
77err:
78 free(t);
79 free(ac);
80 return curl_thread_t_null;
81}
82
83void 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
91int 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 */
104curl_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#elif defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
110 typedef unsigned long curl_win_thread_handle_t;
111#else
112 typedef uintptr_t curl_win_thread_handle_t;
113#endif
114 curl_thread_t t;
115 curl_win_thread_handle_t thread_handle;
116#ifdef _WIN32_WCE
117 thread_handle = CreateThread(NULL, 0, func, arg, 0, NULL);
118#else
119 thread_handle = _beginthreadex(NULL, 0, func, arg, 0, NULL);
120#endif
121 t = (curl_thread_t)thread_handle;
122 if((t == 0) || (t == LongToHandle(-1L))) {
123#ifdef _WIN32_WCE
124 DWORD gle = GetLastError();
125 errno = ((gle == ERROR_ACCESS_DENIED ||
126 gle == ERROR_NOT_ENOUGH_MEMORY) ?
127 EACCES : EINVAL);
128#endif
129 return curl_thread_t_null;
130 }
131 return t;
132}
133
134void Curl_thread_destroy(curl_thread_t hnd)
135{
136 CloseHandle(hnd);
137}
138
139int Curl_thread_join(curl_thread_t *hnd)
140{
141#if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_VISTA) || \
142 (_WIN32_WINNT < _WIN32_WINNT_VISTA)
143 int ret = (WaitForSingleObject(*hnd, INFINITE) == WAIT_OBJECT_0);
144#else
145 int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);
146#endif
147
148 Curl_thread_destroy(*hnd);
149
150 *hnd = curl_thread_t_null;
151
152 return ret;
153}
154
155#endif /* USE_THREADS_* */
156