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annotate contrib/python-zstandard/zstd/common/threading.h @ 48674:f7086f6173f8 stable

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dirstate-v2: rename the configuration to enable the format The rename of the old experimental name was overlooked before the 6.0 release. We rename everything to use the new name (and keep the released name as an alias for compatibility). Differential Revision: https://phab.mercurial-scm.org/D12129
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Feb 2022 16:36:20 +0100
parents de7838053207
children
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1 /**
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2 * Copyright (c) 2016 Tino Reichardt
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3 * All rights reserved.
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4 *
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5 * This source code is licensed under both the BSD-style license (found in the
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6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
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7 * in the COPYING file in the root directory of this source tree).
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8 *
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9 * You can contact the author at:
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10 * - zstdmt source repository: https://github.com/mcmilk/zstdmt
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11 */
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12
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13 #ifndef THREADING_H_938743
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14 #define THREADING_H_938743
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15
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16 #include "debug.h"
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17
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18 #if defined (__cplusplus)
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19 extern "C" {
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20 #endif
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21
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22 #if defined(ZSTD_MULTITHREAD) && defined(_WIN32)
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23
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24 /**
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25 * Windows minimalist Pthread Wrapper, based on :
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26 * http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
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27 */
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28 #ifdef WINVER
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29 # undef WINVER
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30 #endif
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31 #define WINVER 0x0600
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32
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33 #ifdef _WIN32_WINNT
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34 # undef _WIN32_WINNT
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35 #endif
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36 #define _WIN32_WINNT 0x0600
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37
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38 #ifndef WIN32_LEAN_AND_MEAN
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39 # define WIN32_LEAN_AND_MEAN
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40 #endif
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41
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42 #undef ERROR /* reported already defined on VS 2015 (Rich Geldreich) */
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43 #include <windows.h>
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44 #undef ERROR
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45 #define ERROR(name) ZSTD_ERROR(name)
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46
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47
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48 /* mutex */
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49 #define ZSTD_pthread_mutex_t CRITICAL_SECTION
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50 #define ZSTD_pthread_mutex_init(a, b) ((void)(b), InitializeCriticalSection((a)), 0)
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51 #define ZSTD_pthread_mutex_destroy(a) DeleteCriticalSection((a))
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52 #define ZSTD_pthread_mutex_lock(a) EnterCriticalSection((a))
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53 #define ZSTD_pthread_mutex_unlock(a) LeaveCriticalSection((a))
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54
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55 /* condition variable */
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56 #define ZSTD_pthread_cond_t CONDITION_VARIABLE
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57 #define ZSTD_pthread_cond_init(a, b) ((void)(b), InitializeConditionVariable((a)), 0)
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58 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
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59 #define ZSTD_pthread_cond_wait(a, b) SleepConditionVariableCS((a), (b), INFINITE)
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60 #define ZSTD_pthread_cond_signal(a) WakeConditionVariable((a))
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61 #define ZSTD_pthread_cond_broadcast(a) WakeAllConditionVariable((a))
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62
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63 /* ZSTD_pthread_create() and ZSTD_pthread_join() */
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64 typedef struct {
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65 HANDLE handle;
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66 void* (*start_routine)(void*);
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67 void* arg;
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68 } ZSTD_pthread_t;
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69
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70 int ZSTD_pthread_create(ZSTD_pthread_t* thread, const void* unused,
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71 void* (*start_routine) (void*), void* arg);
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72
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73 int ZSTD_pthread_join(ZSTD_pthread_t thread, void** value_ptr);
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74
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75 /**
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76 * add here more wrappers as required
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77 */
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78
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79
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80 #elif defined(ZSTD_MULTITHREAD) /* posix assumed ; need a better detection method */
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81 /* === POSIX Systems === */
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82 # include <pthread.h>
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83
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84 #if DEBUGLEVEL < 1
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85
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86 #define ZSTD_pthread_mutex_t pthread_mutex_t
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87 #define ZSTD_pthread_mutex_init(a, b) pthread_mutex_init((a), (b))
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88 #define ZSTD_pthread_mutex_destroy(a) pthread_mutex_destroy((a))
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89 #define ZSTD_pthread_mutex_lock(a) pthread_mutex_lock((a))
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90 #define ZSTD_pthread_mutex_unlock(a) pthread_mutex_unlock((a))
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91
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92 #define ZSTD_pthread_cond_t pthread_cond_t
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93 #define ZSTD_pthread_cond_init(a, b) pthread_cond_init((a), (b))
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94 #define ZSTD_pthread_cond_destroy(a) pthread_cond_destroy((a))
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95 #define ZSTD_pthread_cond_wait(a, b) pthread_cond_wait((a), (b))
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96 #define ZSTD_pthread_cond_signal(a) pthread_cond_signal((a))
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97 #define ZSTD_pthread_cond_broadcast(a) pthread_cond_broadcast((a))
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98
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99 #define ZSTD_pthread_t pthread_t
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100 #define ZSTD_pthread_create(a, b, c, d) pthread_create((a), (b), (c), (d))
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101 #define ZSTD_pthread_join(a, b) pthread_join((a),(b))
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102
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103 #else /* DEBUGLEVEL >= 1 */
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104
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105 /* Debug implementation of threading.
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106 * In this implementation we use pointers for mutexes and condition variables.
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107 * This way, if we forget to init/destroy them the program will crash or ASAN
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108 * will report leaks.
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109 */
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110
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111 #define ZSTD_pthread_mutex_t pthread_mutex_t*
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112 int ZSTD_pthread_mutex_init(ZSTD_pthread_mutex_t* mutex, pthread_mutexattr_t const* attr);
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113 int ZSTD_pthread_mutex_destroy(ZSTD_pthread_mutex_t* mutex);
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114 #define ZSTD_pthread_mutex_lock(a) pthread_mutex_lock(*(a))
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115 #define ZSTD_pthread_mutex_unlock(a) pthread_mutex_unlock(*(a))
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116
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117 #define ZSTD_pthread_cond_t pthread_cond_t*
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118 int ZSTD_pthread_cond_init(ZSTD_pthread_cond_t* cond, pthread_condattr_t const* attr);
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119 int ZSTD_pthread_cond_destroy(ZSTD_pthread_cond_t* cond);
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120 #define ZSTD_pthread_cond_wait(a, b) pthread_cond_wait(*(a), *(b))
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121 #define ZSTD_pthread_cond_signal(a) pthread_cond_signal(*(a))
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122 #define ZSTD_pthread_cond_broadcast(a) pthread_cond_broadcast(*(a))
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123
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124 #define ZSTD_pthread_t pthread_t
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125 #define ZSTD_pthread_create(a, b, c, d) pthread_create((a), (b), (c), (d))
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126 #define ZSTD_pthread_join(a, b) pthread_join((a),(b))
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127
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128 #endif
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129
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130 #else /* ZSTD_MULTITHREAD not defined */
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131 /* No multithreading support */
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132
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133 typedef int ZSTD_pthread_mutex_t;
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134 #define ZSTD_pthread_mutex_init(a, b) ((void)(a), (void)(b), 0)
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135 #define ZSTD_pthread_mutex_destroy(a) ((void)(a))
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136 #define ZSTD_pthread_mutex_lock(a) ((void)(a))
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137 #define ZSTD_pthread_mutex_unlock(a) ((void)(a))
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138
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139 typedef int ZSTD_pthread_cond_t;
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140 #define ZSTD_pthread_cond_init(a, b) ((void)(a), (void)(b), 0)
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141 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
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142 #define ZSTD_pthread_cond_wait(a, b) ((void)(a), (void)(b))
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143 #define ZSTD_pthread_cond_signal(a) ((void)(a))
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144 #define ZSTD_pthread_cond_broadcast(a) ((void)(a))
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145
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146 /* do not use ZSTD_pthread_t */
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147
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148 #endif /* ZSTD_MULTITHREAD */
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149
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150 #if defined (__cplusplus)
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151 }
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152 #endif
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153
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154 #endif /* THREADING_H_938743 */