GNU libmicrohttpd 1.0.0
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mhd_locks.h
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1/*
2 This file is part of libmicrohttpd
3 Copyright (C) 2016-2022 Karlson2k (Evgeny Grin)
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
19*/
20
36
37#ifndef MHD_LOCKS_H
38#define MHD_LOCKS_H 1
39
40#include "mhd_options.h"
41
42#ifdef MHD_USE_THREADS
43
44#if defined(MHD_USE_W32_THREADS)
45# define MHD_W32_MUTEX_ 1
46# ifndef WIN32_LEAN_AND_MEAN
47# define WIN32_LEAN_AND_MEAN 1
48# endif /* !WIN32_LEAN_AND_MEAN */
49# include <windows.h>
50#elif defined(HAVE_PTHREAD_H) && defined(MHD_USE_POSIX_THREADS)
51# define MHD_PTHREAD_MUTEX_ 1
52# undef HAVE_CONFIG_H
53# include <pthread.h>
54# define HAVE_CONFIG_H 1
55#else
56# error No base mutex API is available.
57#endif
58
59#ifndef MHD_PANIC
60# include <stdio.h>
61# ifdef HAVE_STDLIB_H
62# include <stdlib.h>
63# endif /* HAVE_STDLIB_H */
64/* Simple implementation of MHD_PANIC, to be used outside lib */
65# define MHD_PANIC(msg) \
66 do { fprintf (stderr, \
67 "Abnormal termination at %d line in file %s: %s\n", \
68 (int) __LINE__, __FILE__, msg); abort (); \
69 } while (0)
70#endif /* ! MHD_PANIC */
71
72#if defined(MHD_PTHREAD_MUTEX_)
73typedef pthread_mutex_t MHD_mutex_;
74#elif defined(MHD_W32_MUTEX_)
75typedef CRITICAL_SECTION MHD_mutex_;
76#endif
77
78#if defined(MHD_PTHREAD_MUTEX_)
84#define MHD_mutex_init_(pmutex) (! (pthread_mutex_init ((pmutex), NULL)))
85#elif defined(MHD_W32_MUTEX_)
91#define MHD_mutex_init_(pmutex) \
92 (InitializeCriticalSectionAndSpinCount ((pmutex),16))
93#endif
94
95#if defined(MHD_PTHREAD_MUTEX_)
96# if defined(PTHREAD_MUTEX_INITIALIZER)
100# define MHD_MUTEX_STATIC_DEFN_INIT_(m) \
101 static MHD_mutex_ m = PTHREAD_MUTEX_INITIALIZER
102# endif /* PTHREAD_MUTEX_INITIALIZER */
103#endif
104
105#if defined(MHD_PTHREAD_MUTEX_)
111#define MHD_mutex_destroy_(pmutex) (! (pthread_mutex_destroy ((pmutex))))
112#elif defined(MHD_W32_MUTEX_)
118#define MHD_mutex_destroy_(pmutex) (DeleteCriticalSection ((pmutex)), ! 0)
119#endif
120
126#define MHD_mutex_destroy_chk_(pmutex) do { \
127 if (! MHD_mutex_destroy_ (pmutex)) \
128 MHD_PANIC (_ ("Failed to destroy mutex.\n")); \
129 } while (0)
130
131
132#if defined(MHD_PTHREAD_MUTEX_)
140#define MHD_mutex_lock_(pmutex) (! (pthread_mutex_lock ((pmutex))))
141#elif defined(MHD_W32_MUTEX_)
149#define MHD_mutex_lock_(pmutex) (EnterCriticalSection ((pmutex)), ! 0)
150#endif
151
159#define MHD_mutex_lock_chk_(pmutex) do { \
160 if (! MHD_mutex_lock_ (pmutex)) \
161 MHD_PANIC (_ ("Failed to lock mutex.\n")); \
162} while (0)
163
164#if defined(MHD_PTHREAD_MUTEX_)
170#define MHD_mutex_unlock_(pmutex) (! (pthread_mutex_unlock ((pmutex))))
171#elif defined(MHD_W32_MUTEX_)
177#define MHD_mutex_unlock_(pmutex) (LeaveCriticalSection ((pmutex)), ! 0)
178#endif
179
185#define MHD_mutex_unlock_chk_(pmutex) do { \
186 if (! MHD_mutex_unlock_ (pmutex)) \
187 MHD_PANIC (_ ("Failed to unlock mutex.\n")); \
188} while (0)
189
190#else /* ! MHD_USE_THREADS */
191
192#define MHD_mutex_init_(ignore) (! 0)
193#define MHD_mutex_destroy_(ignore) (! 0)
194#define MHD_mutex_destroy_chk_(ignore) (void)0
195#define MHD_mutex_lock_(ignore) (! 0)
196#define MHD_mutex_lock_chk_(ignore) (void)0
197#define MHD_mutex_unlock_(ignore) (! 0)
198#define MHD_mutex_unlock_chk_(ignore) (void)0
199
200#endif /* ! MHD_USE_THREADS */
201
202#endif /* ! MHD_LOCKS_H */
additional automatic macros for MHD_config.h