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annotate src/atomic/macosx/SDL_atomic.c @ 3308:0e000afe3dc0

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fixed a spelling error in the documentation.
author Bob Pendleton <bob@pendleton.com>
date Fri, 25 Sep 2009 19:26:21 +0000
parents 72b542f34739
children f7b03b6838cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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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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 DUMMY VERSION.
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40
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41 This version of the code assumes there is no support for atomic
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42 operations. Therefore, every function sets the SDL error
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43 message. Oddly enough, if you only have one thread then this
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44 version actuallys works.
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45 */
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47 /*
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48 Native spinlock routines. Because this is the dummy implementation
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49 these will always call SDL_SetError() and do nothing.
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50 */
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51
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52 void
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53 SDL_AtomicLock(SDL_SpinLock *lock)
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54 {
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55 SDL_SetError("SDL_atomic.c: is not implemented on this platform");
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56 }
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57
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58 void
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59 SDL_AtomicUnlock(SDL_SpinLock *lock)
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60 {
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61 SDL_SetError("SDL_atomic.c: is not implemented on this platform");
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62 }
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63
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64 /*
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65 Note that platform specific versions can be built from this version
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66 by changing the #undefs to #defines and adding platform specific
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67 code.
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68 */
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69
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70 #undef nativeTestThenSet32
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71 #undef nativeClear32
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72 #undef nativeFetchThenIncrement32
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73 #undef nativeFetchThenDecrement32
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74 #undef nativeFetchThenAdd32
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75 #undef nativeFetchThenSubtract32
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76 #undef nativeIncrementThenFetch32
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77 #undef nativeDecrementThenFetch32
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78 #undef nativeAddThenFetch32
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79 #undef nativeSubtractThenFetch32
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81 #undef nativeTestThenSet64
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82 #undef nativeClear64
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83 #undef nativeFetchThenIncrement64
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84 #undef nativeFetchThenDecrement64
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85 #undef nativeFetchThenAdd64
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86 #undef nativeFetchThenSubtract64
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87 #undef nativeIncrementThenFetch64
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88 #undef nativeDecrementThenFetch64
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89 #undef nativeAddThenFetch64
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90 #undef nativeSubtractThenFetch64
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91
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92 /*
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93 If any of the operations are not provided then we must emulate some
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94 of them. That means we need a nice implementation of spin locks
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95 that avoids the "one big lock" problem. We use a vector of spin
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96 locks and pick which one to use based on the address of the operand
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97 of the function.
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98
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99 To generate the index of the lock we first shift by 3 bits to get
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100 rid on the zero bits that result from 32 and 64 bit allignment of
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101 data. We then mask off all but 5 bits and use those 5 bits as an
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102 index into the table.
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103
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104 Picking the lock this way insures that accesses to the same data at
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105 the same time will go to the same lock. OTOH, accesses to different
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106 data have only a 1/32 chance of hitting the same lock. That should
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107 pretty much eliminate the chances of several atomic operations on
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108 different data from waiting on the same "big lock". If it isn't
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109 then the table of locks can be expanded to a new size so long as
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110 the new size is a power of two.
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111 */
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112
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113 static SDL_SpinLock locks[32] = {
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114 0, 0, 0, 0, 0, 0, 0, 0,
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115 0, 0, 0, 0, 0, 0, 0, 0,
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116 0, 0, 0, 0, 0, 0, 0, 0,
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117 0, 0, 0, 0, 0, 0, 0, 0,
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118 };
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119
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120 static __inline__ void
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121 privateWaitLock(volatile void *ptr)
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122 {
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123 #if SIZEOF_VOIDP == 4
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124 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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125 #elif SIZEOF_VOIDP == 8
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126 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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127 #endif
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128
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129 SDL_AtomicLock(&locks[index]);
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130 }
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131
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132 static __inline__ void
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133 privateUnlock(volatile void *ptr)
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134 {
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135 #if SIZEOF_VOIDP == 4
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136 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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137 #elif SIZEOF_VOIDP == 8
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138 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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139 #endif
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140
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141 SDL_AtomicUnlock(&locks[index]);
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142 }
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143
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144 /* 32 bit atomic operations */
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145
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146 SDL_bool
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147 SDL_AtomicTestThenSet32(volatile Uint32 * ptr)
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148 {
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149 #ifdef nativeTestThenSet32
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150 #else
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151 SDL_bool result = SDL_FALSE;
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152
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153 privateWaitLock(ptr);
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154 result = (*ptr == 0);
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155 if (result)
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156 {
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157 *ptr = 1;
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158 }
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159 privateUnlock(ptr);
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160
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161 return result;
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162 #endif
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163 }
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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164
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165 void
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166 SDL_AtomicClear32(volatile Uint32 * ptr)
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167 {
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168 #ifdef nativeClear32
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169 #else
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170 privateWaitLock(ptr);
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171 *ptr = 0;
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172 privateUnlock(ptr);
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173
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174 return;
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175 #endif
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176 }
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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177
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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178 Uint32
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179 SDL_AtomicFetchThenIncrement32(volatile Uint32 * ptr)
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180 {
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181 #ifdef nativeFetchThenIncrement32
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182 #else
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183 Uint32 tmp = 0;
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184
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185 privateWaitLock(ptr);
3202
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186 tmp = *ptr;
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187 (*ptr)+= 1;
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188 privateUnlock(ptr);
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189
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190 return tmp;
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diff changeset
191 #endif
3199
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192 }
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>
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diff changeset
193
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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194 Uint32
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195 SDL_AtomicFetchThenDecrement32(volatile Uint32 * ptr)
3199
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196 {
3202
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197 #ifdef nativeFetchThenDecrement32
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diff changeset
198 #else
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199 Uint32 tmp = 0;
3202
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200
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201 privateWaitLock(ptr);
3202
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202 tmp = *ptr;
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203 (*ptr) -= 1;
3261
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204 privateUnlock(ptr);
3202
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diff changeset
205
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206 return tmp;
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diff changeset
207 #endif
3199
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208 }
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>
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209
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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diff changeset
210 Uint32
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211 SDL_AtomicFetchThenAdd32(volatile Uint32 * ptr, Uint32 value)
3199
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212 {
3202
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diff changeset
213 #ifdef nativeFetchThenAdd32
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214 #else
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215 Uint32 tmp = 0;
3202
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216
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diff changeset
217 privateWaitLock(ptr);
3202
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218 tmp = *ptr;
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219 (*ptr)+= value;
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220 privateUnlock(ptr);
3202
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diff changeset
221
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222 return tmp;
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diff changeset
223 #endif
3199
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224 }
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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225
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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226 Uint32
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227 SDL_AtomicFetchThenSubtract32(volatile Uint32 * ptr, Uint32 value)
3199
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228 {
3202
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229 #ifdef nativeFetchThenSubtract32
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230 #else
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231 Uint32 tmp = 0;
3202
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232
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diff changeset
233 privateWaitLock(ptr);
3202
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diff changeset
234 tmp = *ptr;
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235 (*ptr)-= value;
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diff changeset
236 privateUnlock(ptr);
3202
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diff changeset
237
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diff changeset
238 return tmp;
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diff changeset
239 #endif
3199
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240 }
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
241
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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parents:
diff changeset
242 Uint32
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diff changeset
243 SDL_AtomicIncrementThenFetch32(volatile Uint32 * ptr)
3199
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diff changeset
244 {
3202
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diff changeset
245 #ifdef nativeIncrementThenFetch32
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diff changeset
246 #else
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247 Uint32 tmp = 0;
3202
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248
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diff changeset
249 privateWaitLock(ptr);
3202
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diff changeset
250 (*ptr)+= 1;
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parents: 3199
diff changeset
251 tmp = *ptr;
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diff changeset
252 privateUnlock(ptr);
3202
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diff changeset
253
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
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parents: 3199
diff changeset
254 return tmp;
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parents: 3199
diff changeset
255 #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
256 }
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
257
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
258 Uint32
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Bob Pendleton <bob@pendleton.com>
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259 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.
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parents:
diff changeset
260 {
3202
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diff changeset
261 #ifdef nativeDecrementThenFetch32
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diff changeset
262 #else
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263 Uint32 tmp = 0;
3202
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diff changeset
264
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parents: 3236
diff changeset
265 privateWaitLock(ptr);
3202
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diff changeset
266 (*ptr)-= 1;
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diff changeset
267 tmp = *ptr;
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268 privateUnlock(ptr);
3202
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diff changeset
269
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diff changeset
270 return tmp;
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diff changeset
271 #endif
3199
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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diff changeset
272 }
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
273
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
274 Uint32
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275 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.
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diff changeset
276 {
3202
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diff changeset
277 #ifdef nativeAddThenFetch32
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diff changeset
278 #else
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279 Uint32 tmp = 0;
3202
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280
3261
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281 privateWaitLock(ptr);
3202
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282 (*ptr)+= value;
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diff changeset
283 tmp = *ptr;
3261
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284 privateUnlock(ptr);
3202
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diff changeset
285
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Bob Pendleton <bob@pendleton.com>
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diff changeset
286 return tmp;
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diff changeset
287 #endif
3199
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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diff changeset
288 }
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
289
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
290 Uint32
3236
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291 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.
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parents:
diff changeset
292 {
3202
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diff changeset
293 #ifdef nativeSubtractThenFetch32
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diff changeset
294 #else
3212
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diff changeset
295 Uint32 tmp = 0;
3202
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diff changeset
296
3261
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diff changeset
297 privateWaitLock(ptr);
3202
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diff changeset
298 (*ptr)-= value;
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diff changeset
299 tmp = *ptr;
3261
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Bob Pendleton <bob@pendleton.com>
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diff changeset
300 privateUnlock(ptr);
3202
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diff changeset
301
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: 3199
diff changeset
302 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: 3199
diff changeset
303 #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
304 }
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
305
3202
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diff changeset
306 /* 64 bit atomic operations */
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
307 #ifdef SDL_HAS_64BIT_TYPE
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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parents:
diff changeset
308
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
309 SDL_bool
3236
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diff changeset
310 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
311 {
3202
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diff changeset
312 #ifdef nativeTestThenSet64
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diff changeset
313 #else
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Bob Pendleton <bob@pendleton.com>
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diff changeset
314 SDL_bool result = SDL_FALSE;
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parents: 3199
diff changeset
315
3261
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Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
316 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
317 result = (*ptr == 0);
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Bob Pendleton <bob@pendleton.com>
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diff changeset
318 if (result)
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Bob Pendleton <bob@pendleton.com>
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diff changeset
319 {
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: 3199
diff changeset
320 *ptr = 1;
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diff changeset
321 }
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: 3236
diff changeset
322 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
323
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
324 return result;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
325 #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
326 }
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
327
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
328 void
3236
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Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
329 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
330 {
3202
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diff changeset
331 #ifdef nativeClear64
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Bob Pendleton <bob@pendleton.com>
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diff changeset
332 #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: 3236
diff changeset
333 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
334 *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: 3236
diff changeset
335 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
336
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: 3199
diff changeset
337 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: 3199
diff changeset
338 #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
339 }
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
340
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 Uint64
3236
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Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
342 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
343 {
3202
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diff changeset
344 #ifdef nativeFetchThenIncrement64
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Bob Pendleton <bob@pendleton.com>
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diff changeset
345 #else
3212
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Bob Pendleton <bob@pendleton.com>
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diff changeset
346 Uint64 tmp = 0;
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
347
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: 3236
diff changeset
348 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
349 tmp = *ptr;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
350 (*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: 3236
diff changeset
351 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
352
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: 3199
diff changeset
353 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: 3199
diff changeset
354 #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
355 }
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
356
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 Uint64
3236
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Bob Pendleton <bob@pendleton.com>
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diff changeset
358 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
359 {
3202
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Bob Pendleton <bob@pendleton.com>
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diff changeset
360 #ifdef nativeFetchThenDecrement64
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Bob Pendleton <bob@pendleton.com>
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diff changeset
361 #else
3212
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Bob Pendleton <bob@pendleton.com>
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diff changeset
362 Uint64 tmp = 0;
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
363
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: 3236
diff changeset
364 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
365 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: 3199
diff changeset
366 (*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: 3236
diff changeset
367 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: 3199
diff changeset
368
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: 3199
diff changeset
369 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: 3199
diff changeset
370 #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
371 }
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 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
374 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
375 {
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: 3199
diff changeset
376 #ifdef nativeFetchThenAdd64
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: 3199
diff changeset
377 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
378 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: 3199
diff changeset
379
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: 3236
diff changeset
380 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: 3199
diff changeset
381 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: 3199
diff changeset
382 (*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: 3236
diff changeset
383 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: 3199
diff changeset
384
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: 3199
diff changeset
385 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: 3199
diff changeset
386 #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
387 }
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
388
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 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
390 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
391 {
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: 3199
diff changeset
392 #ifdef nativeFetchThenSubtract64
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: 3199
diff changeset
393 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
394 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: 3199
diff changeset
395
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: 3236
diff changeset
396 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: 3199
diff changeset
397 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: 3199
diff changeset
398 (*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: 3236
diff changeset
399 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: 3199
diff changeset
400
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: 3199
diff changeset
401 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: 3199
diff changeset
402 #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
403 }
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
404
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
405 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
406 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
407 {
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: 3199
diff changeset
408 #ifdef nativeIncrementThenFetch64
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: 3199
diff changeset
409 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
410 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: 3199
diff changeset
411
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: 3236
diff changeset
412 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: 3199
diff changeset
413 (*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: 3199
diff changeset
414 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: 3236
diff changeset
415 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: 3199
diff changeset
416
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: 3199
diff changeset
417 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: 3199
diff changeset
418 #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
419 }
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
420
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
421 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
422 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
423 {
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: 3199
diff changeset
424 #ifdef nativeDecrementThenFetch64
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: 3199
diff changeset
425 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
426 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: 3199
diff changeset
427
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: 3236
diff changeset
428 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: 3199
diff changeset
429 (*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: 3199
diff changeset
430 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: 3236
diff changeset
431 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: 3199
diff changeset
432
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: 3199
diff changeset
433 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: 3199
diff changeset
434 #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
435 }
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
436
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
437 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
438 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
439 {
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: 3199
diff changeset
440 #ifdef nativeAddThenFetch64
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: 3199
diff changeset
441 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
442 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: 3199
diff changeset
443
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: 3236
diff changeset
444 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: 3199
diff changeset
445 (*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: 3199
diff changeset
446 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: 3236
diff changeset
447 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: 3199
diff changeset
448
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: 3199
diff changeset
449 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: 3199
diff changeset
450 #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
451 }
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
452
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
453 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
454 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
455 {
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: 3199
diff changeset
456 #ifdef nativeSubtractThenFetch64
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: 3199
diff changeset
457 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
458 Uint64 tmp = 0;
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
459
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: 3236
diff changeset
460 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: 3199
diff changeset
461 (*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: 3199
diff changeset
462 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: 3236
diff changeset
463 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: 3199
diff changeset
464
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: 3199
diff changeset
465 return tmp;
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
466 #endif
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: 3199
diff changeset
467 }
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
468 #endif
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: 3199
diff changeset
469