source: UsbWattMeter/trunk/curl-7.47.1/lib/vtls/polarssl_threadlock.c@ 164

Last change on this file since 164 was 164, checked in by coas-nagasima, 6 years ago

TOPPERS/ECNLサンプルアプリ「USB充電器電力計」を追加

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  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc
File size: 4.2 KB
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1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 2013-2015, Daniel Stenberg, <daniel@haxx.se>, et al.
9 * Copyright (C) 2010, 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
10 *
11 * This software is licensed as described in the file COPYING, which
12 * you should have received as part of this distribution. The terms
13 * are also available at https://curl.haxx.se/docs/copyright.html.
14 *
15 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
16 * copies of the Software, and permit persons to whom the Software is
17 * furnished to do so, under the terms of the COPYING file.
18 *
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
21 *
22 ***************************************************************************/
23#include "curl_setup.h"
24
25#if (defined(USE_POLARSSL) || defined(USE_MBEDTLS)) && \
26 (defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32))
27
28#if defined(USE_THREADS_POSIX)
29# ifdef HAVE_PTHREAD_H
30# include <pthread.h>
31# endif
32#elif defined(USE_THREADS_WIN32)
33# ifdef HAVE_PROCESS_H
34# include <process.h>
35# endif
36#endif
37
38#include "polarssl_threadlock.h"
39#include "curl_printf.h"
40#include "curl_memory.h"
41/* The last #include file should be: */
42#include "memdebug.h"
43
44/* number of thread locks */
45#define NUMT 2
46
47/* This array will store all of the mutexes available to PolarSSL. */
48static POLARSSL_MUTEX_T *mutex_buf = NULL;
49
50int Curl_polarsslthreadlock_thread_setup(void)
51{
52 int i;
53 int ret;
54
55 mutex_buf = malloc(NUMT * sizeof(POLARSSL_MUTEX_T));
56 if(!mutex_buf)
57 return 0; /* error, no number of threads defined */
58
59#ifdef HAVE_PTHREAD_H
60 for(i = 0; i < NUMT; i++) {
61 ret = pthread_mutex_init(&mutex_buf[i], NULL);
62 if(ret)
63 return 0; /* pthread_mutex_init failed */
64 }
65#elif defined(HAVE_PROCESS_H)
66 for(i = 0; i < NUMT; i++) {
67 mutex_buf[i] = CreateMutex(0, FALSE, 0);
68 if(mutex_buf[i] == 0)
69 return 0; /* CreateMutex failed */
70 }
71#endif /* HAVE_PTHREAD_H */
72
73 return 1; /* OK */
74}
75
76int Curl_polarsslthreadlock_thread_cleanup(void)
77{
78 int i;
79 int ret;
80
81 if(!mutex_buf)
82 return 0; /* error, no threads locks defined */
83
84#ifdef HAVE_PTHREAD_H
85 for(i = 0; i < NUMT; i++) {
86 ret = pthread_mutex_destroy(&mutex_buf[i]);
87 if(ret)
88 return 0; /* pthread_mutex_destroy failed */
89 }
90#elif defined(HAVE_PROCESS_H)
91 for(i = 0; i < NUMT; i++) {
92 ret = CloseHandle(mutex_buf[i]);
93 if(!ret)
94 return 0; /* CloseHandle failed */
95 }
96#endif /* HAVE_PTHREAD_H */
97 free(mutex_buf);
98 mutex_buf = NULL;
99
100 return 1; /* OK */
101}
102
103int Curl_polarsslthreadlock_lock_function(int n)
104{
105 int ret;
106#ifdef HAVE_PTHREAD_H
107 if(n < NUMT) {
108 ret = pthread_mutex_lock(&mutex_buf[n]);
109 if(ret) {
110 DEBUGF(fprintf(stderr,
111 "Error: polarsslthreadlock_lock_function failed\n"));
112 return 0; /* pthread_mutex_lock failed */
113 }
114 }
115#elif defined(HAVE_PROCESS_H)
116 if(n < NUMT) {
117 ret = (WaitForSingleObject(mutex_buf[n], INFINITE)==WAIT_FAILED?1:0);
118 if(ret) {
119 DEBUGF(fprintf(stderr,
120 "Error: polarsslthreadlock_lock_function failed\n"));
121 return 0; /* pthread_mutex_lock failed */
122 }
123 }
124#endif /* HAVE_PTHREAD_H */
125 return 1; /* OK */
126}
127
128int Curl_polarsslthreadlock_unlock_function(int n)
129{
130 int ret;
131#ifdef HAVE_PTHREAD_H
132 if(n < NUMT) {
133 ret = pthread_mutex_unlock(&mutex_buf[n]);
134 if(ret) {
135 DEBUGF(fprintf(stderr,
136 "Error: polarsslthreadlock_unlock_function failed\n"));
137 return 0; /* pthread_mutex_unlock failed */
138 }
139 }
140#elif defined(HAVE_PROCESS_H)
141 if(n < NUMT) {
142 ret = ReleaseMutex(mutex_buf[n]);
143 if(!ret) {
144 DEBUGF(fprintf(stderr,
145 "Error: polarsslthreadlock_unlock_function failed\n"));
146 return 0; /* pthread_mutex_lock failed */
147 }
148 }
149#endif /* HAVE_PTHREAD_H */
150 return 1; /* OK */
151}
152
153#endif /* USE_POLARSSL || USE_MBEDTLS */
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