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annotate src/atomic/linux/SDL_atomic.c @ 3697:f7b03b6838cb

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Fixed bug #926 Updated copyright to LGPL version 2.1 and year 2010
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Jan 2010 21:10:53 +0000
parents 0e000afe3dc0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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f7b03b6838cb Fixed bug #926
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3 Copyright (C) 1997-2010 Sam Lantinga
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21
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22 Contributed by Bob Pendleton, bob@pendleton.com
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23 */
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24
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25 #include "SDL_stdinc.h"
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26 #include "SDL_atomic.h"
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28 #include "SDL_error.h"
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29
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30 /*
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31 This file provides 32, and 64 bit atomic operations. If the
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32 operations are provided by the native hardware and operating system
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33 they are used. If they are not then the operations are emulated
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34 using the SDL spin lock operations. If spin lock can not be
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35 implemented then these functions must fail.
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36 */
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37
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38 /*
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39 LINUX/GCC VERSION.
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40
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41 This version of the code assumes support of the atomic builtins as
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42 documented at gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html This
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43 code should work on any modern x86 or other processor supported by
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44 GCC.
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45
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46 Some processors will only support some of these operations so
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47 #ifdefs will have to be added as incompatibilities are discovered
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48 */
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49
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50 /*
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51 Native spinlock routines.
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52 */
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53
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54 void
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55 SDL_AtomicLock(SDL_SpinLock *lock)
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56 {
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57 while (0 != __sync_lock_test_and_set(lock, 1))
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58 {
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59 }
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60 }
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61
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62 void
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63 SDL_AtomicUnlock(SDL_SpinLock *lock)
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64 {
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65 __sync_lock_test_and_set(lock, 0);
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66 }
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67
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68 /*
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69 Note that platform specific versions can be built from this version
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70 by changing the #undefs to #defines and adding platform specific
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71 code.
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72 */
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73
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74 #define nativeTestThenSet32
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75 #define nativeClear32
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76 #define nativeFetchThenIncrement32
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77 #define nativeFetchThenDecrement32
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78 #define nativeFetchThenAdd32
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79 #define nativeFetchThenSubtract32
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80 #define nativeIncrementThenFetch32
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81 #define nativeDecrementThenFetch32
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82 #define nativeAddThenFetch32
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83 #define nativeSubtractThenFetch32
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84
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85 #ifdef SDL_HAS_64BIT_TYPE
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86 #ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
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87 #define nativeTestThenSet64
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88 #define nativeClear64
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89 #define nativeFetchThenIncrement64
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90 #define nativeFetchThenDecrement64
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91 #define nativeFetchThenAdd64
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92 #define nativeFetchThenSubtract64
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93 #define nativeIncrementThenFetch64
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94 #define nativeDecrementThenFetch64
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95 #define nativeAddThenFetch64
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96 #define nativeSubtractThenFetch64
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97 #else
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98 #undef nativeTestThenSet64
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99 #undef nativeClear64
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100 #undef nativeFetchThenIncrement64
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101 #undef nativeFetchThenDecrement64
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102 #undef nativeFetchThenAdd64
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103 #undef nativeFetchThenSubtract64
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104 #undef nativeIncrementThenFetch64
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105 #undef nativeDecrementThenFetch64
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106 #undef nativeAddThenFetch64
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107 #undef nativeSubtractThenFetch64
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108 #endif /* __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 */
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109 #endif /* SDL_HAS_64BIT_TYPE */
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110
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111 /*
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112 If any of the operations are not provided then we must emulate some
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113 of them. That means we need a nice implementation of spin locks
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114 that avoids the "one big lock" problem. We use a vector of spin
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115 locks and pick which one to use based on the address of the operand
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116 of the function.
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117
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118 To generate the index of the lock we first shift by 3 bits to get
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119 rid on the zero bits that result from 32 and 64 bit allignment of
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120 data. We then mask off all but 5 bits and use those 5 bits as an
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121 index into the table.
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122
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123 Picking the lock this way insures that accesses to the same data at
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124 the same time will go to the same lock. OTOH, accesses to different
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125 data have only a 1/32 chance of hitting the same lock. That should
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126 pretty much eliminate the chances of several atomic operations on
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127 different data from waiting on the same "big lock". If it isn't
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128 then the table of locks can be expanded to a new size so long as
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129 the new size is a power of two.
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130 */
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131
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132 static SDL_SpinLock locks[32] = {
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133 0, 0, 0, 0, 0, 0, 0, 0,
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134 0, 0, 0, 0, 0, 0, 0, 0,
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135 0, 0, 0, 0, 0, 0, 0, 0,
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136 0, 0, 0, 0, 0, 0, 0, 0,
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137 };
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138
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139 static __inline__ void
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140 privateWaitLock(volatile void *ptr)
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141 {
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142 #if SIZEOF_VOIDP == 4
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143 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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144 #elif SIZEOF_VOIDP == 8
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145 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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146 #endif
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147
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148 SDL_AtomicLock(&locks[index]);
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149 }
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150
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151 static __inline__ void
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152 privateUnlock(volatile void *ptr)
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153 {
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154 #if SIZEOF_VOIDP == 4
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155 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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156 #elif SIZEOF_VOIDP == 8
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157 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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158 #endif
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159
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160 SDL_AtomicUnlock(&locks[index]);
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161 }
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162
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163 /* 32 bit atomic operations */
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164
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165 SDL_bool
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166 SDL_AtomicTestThenSet32(volatile Uint32 * ptr)
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167 {
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168 #ifdef nativeTestThenSet32
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169 return 0 == __sync_lock_test_and_set(ptr, 1);
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170 #else
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171 SDL_bool result = SDL_FALSE;
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172
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173 privateWaitLock(ptr);
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174 result = (*ptr == 0);
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175 if (result)
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176 {
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177 *ptr = 1;
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178 }
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179 privateUnlock(ptr);
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180
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181 return result;
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182 #endif
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183 }
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184
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185 void
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186 SDL_AtomicClear32(volatile Uint32 * ptr)
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187 {
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188 #ifdef nativeClear32
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189 __sync_lock_test_and_set(ptr, 0);
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190 return;
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191 #else
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192 privateWaitLock(ptr);
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193 *ptr = 0;
3261
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194 privateUnlock(ptr);
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195
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196 return;
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197 #endif
3199
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198 }
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199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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200 Uint32
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201 SDL_AtomicFetchThenIncrement32(volatile Uint32 * ptr)
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202 {
3202
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203 #ifdef nativeFetchThenIncrement32
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204 return __sync_fetch_and_add(ptr, 1);
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205 #else
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206 Uint32 tmp = 0;
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207
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208 privateWaitLock(ptr);
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209 tmp = *ptr;
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210 (*ptr)+= 1;
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211 privateUnlock(ptr);
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212
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213 return tmp;
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214 #endif
3199
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215 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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216
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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217 Uint32
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218 SDL_AtomicFetchThenDecrement32(volatile Uint32 * ptr)
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219 {
3202
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220 #ifdef nativeFetchThenDecrement32
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221 return __sync_fetch_and_sub(ptr, 1);
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222 #else
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223 Uint32 tmp = 0;
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224
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225 privateWaitLock(ptr);
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226 tmp = *ptr;
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227 (*ptr) -= 1;
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228 privateUnlock(ptr);
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229
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230 return tmp;
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231 #endif
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232 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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233
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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234 Uint32
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235 SDL_AtomicFetchThenAdd32(volatile Uint32 * ptr, Uint32 value)
3199
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236 {
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237 #ifdef nativeFetchThenAdd32
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238 return __sync_fetch_and_add(ptr, value);
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239 #else
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240 Uint32 tmp = 0;
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241
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diff changeset
242 privateWaitLock(ptr);
3202
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parents: 3201
diff changeset
243 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
244 (*ptr)+= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
245 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
246
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
247 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
248 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
249 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
250
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
251 Uint32
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
252 SDL_AtomicFetchThenSubtract32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
253 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
254 #ifdef nativeFetchThenSubtract32
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
255 return __sync_fetch_and_sub(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
256 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
257 Uint32 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
258
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
259 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
260 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
261 (*ptr)-= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
262 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
263
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
264 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
265 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
266 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
267
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
268 Uint32
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
269 SDL_AtomicIncrementThenFetch32(volatile Uint32 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
270 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
271 #ifdef nativeIncrementThenFetch32
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
272 return __sync_add_and_fetch(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
273 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
274 Uint32 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
275
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
276 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
277 (*ptr)+= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
278 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
279 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
280
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
281 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
282 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
283 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
284
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
285 Uint32
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
286 SDL_AtomicDecrementThenFetch32(volatile Uint32 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
287 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
288 #ifdef nativeDecrementThenFetch32
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
289 return __sync_sub_and_fetch(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
290 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
291 Uint32 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
292
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
293 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
294 (*ptr)-= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
295 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
296 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
297
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
298 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
299 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
300 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
301
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
302 Uint32
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
303 SDL_AtomicAddThenFetch32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
304 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
305 #ifdef nativeAddThenFetch32
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
306 return __sync_add_and_fetch(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
307 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
308 Uint32 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
309
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
310 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
311 (*ptr)+= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
312 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
313 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
314
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
315 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
316 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
317 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
318
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
319 Uint32
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
320 SDL_AtomicSubtractThenFetch32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
321 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
322 #ifdef nativeSubtractThenFetch32
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
323 return __sync_sub_and_fetch(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
324 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
325 Uint32 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
326
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
327 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
328 (*ptr)-= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
329 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
330 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
331
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
332 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
333 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
334 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
335
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
336 /* 64 bit atomic operations */
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
337 #ifdef SDL_HAS_64BIT_TYPE
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
338
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
339 SDL_bool
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
340 SDL_AtomicTestThenSet64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
341 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
342 #ifdef nativeTestThenSet64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
343 return 0 == __sync_lock_test_and_set(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
344 #else
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
345 SDL_bool result = SDL_FALSE;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
346
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
347 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
348 result = (*ptr == 0);
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
349 if (result)
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
350 {
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
351 *ptr = 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
352 }
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
353 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
354
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
355 return result;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
356 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
357 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
358
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
359 void
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
360 SDL_AtomicClear64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
361 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
362 #ifdef nativeClear64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
363 __sync_lock_test_and_set(ptr, 0);
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
364 return;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
365 #else
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
366 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
367 *ptr = 0;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
368 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
369
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
370 return;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
371 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
372 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
373
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
374 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
375 SDL_AtomicFetchThenIncrement64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
376 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
377 #ifdef nativeFetchThenIncrement64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
378 return __sync_fetch_and_add(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
379 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
380 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
381
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
382 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
383 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
384 (*ptr)+= 1;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
385 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
386
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
387 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
388 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
389 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
390
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
391 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
392 SDL_AtomicFetchThenDecrement64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
393 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
394 #ifdef nativeFetchThenDecrement64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
395 return __sync_fetch_and_sub(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
396 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
397 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
398
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
399 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
400 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
401 (*ptr) -= 1;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
402 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
403
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
404 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
405 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
406 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
407
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
408 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
409 SDL_AtomicFetchThenAdd64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
410 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
411 #ifdef nativeFetchThenAdd64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
412 return __sync_fetch_and_add(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
413 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
414 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
415
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
416 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
417 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
418 (*ptr)+= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
419 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
420
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
421 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
422 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
423 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
424
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
425 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
426 SDL_AtomicFetchThenSubtract64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
427 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
428 #ifdef nativeFetchThenSubtract64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
429 return __sync_fetch_and_sub(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
430 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
431 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
432
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
433 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
434 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
435 (*ptr)-= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
436 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
437
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
438 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
439 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
440 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
441
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
442 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
443 SDL_AtomicIncrementThenFetch64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
444 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
445 #ifdef nativeIncrementThenFetch64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
446 return __sync_add_and_fetch(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
447 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
448 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
449
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
450 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
451 (*ptr)+= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
452 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
453 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
454
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
455 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
456 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
457 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
458
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
459 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
460 SDL_AtomicDecrementThenFetch64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
461 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
462 #ifdef nativeDecrementThenFetch64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
463 return __sync_sub_and_fetch(ptr, 1);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
464 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
465 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
466
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
467 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
468 (*ptr)-= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
469 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
470 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
471
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
472 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
473 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
474 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
475
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
476 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
477 SDL_AtomicAddThenFetch64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
478 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
479 #ifdef nativeAddThenFetch64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
480 return __sync_add_and_fetch(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
481 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
482 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
483
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
484 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
485 (*ptr)+= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
486 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
487 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
488
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
489 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
490 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
491 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
492
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
493 Uint64
3216
48a80f2a7ff2 volitile... duh, yeah the variable need to be labeled volitile
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
494 SDL_AtomicSubtractThenFetch64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
495 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
496 #ifdef nativeSubtractThenFetch64
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
497 return __sync_sub_and_fetch(ptr, value);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
498 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
499 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
500
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
501 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
502 (*ptr)-= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
503 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
504 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
505
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
506 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
507 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
508 }
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
509
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3216
diff changeset
510 #endif /* SDL_HAS_64BIT_TYPE */