Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /** @file rs_atomic.rsh |
| 18 | * \brief Atomic routines |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #ifndef __RS_ATOMIC_RSH__ |
| 24 | #define __RS_ATOMIC_RSH__ |
| 25 | |
Alex Sakhartchouk | 4325387 | 2011-09-28 15:23:18 -0700 | [diff] [blame] | 26 | #if (defined(RS_VERSION) && (RS_VERSION >= 14)) |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 27 | |
| 28 | /** |
| 29 | * Atomic add one to the value at addr. |
| 30 | * Equal to rsAtomicAdd(addr, 1) |
| 31 | * |
| 32 | * @param addr Address of value to increment |
| 33 | * |
| 34 | * @return old value |
| 35 | */ |
| 36 | extern int32_t __attribute__((overloadable)) |
| 37 | rsAtomicInc(volatile int32_t* addr); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 38 | |
| 39 | /** |
| 40 | * Atomic subtract one from the value at addr. Equal to rsAtomicSub(addr, 1) |
| 41 | * |
| 42 | * @param addr Address of value to decrement |
| 43 | * |
| 44 | * @return old value |
| 45 | */ |
| 46 | extern int32_t __attribute__((overloadable)) |
| 47 | rsAtomicDec(volatile int32_t* addr); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 48 | |
| 49 | /** |
| 50 | * Atomic add a value to the value at addr. addr[0] += value |
| 51 | * |
| 52 | * @param addr Address of value to modify |
| 53 | * @param value Amount to add to the value at addr |
| 54 | * |
| 55 | * @return old value |
| 56 | */ |
| 57 | extern int32_t __attribute__((overloadable)) |
| 58 | rsAtomicAdd(volatile int32_t* addr, int32_t value); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 59 | |
| 60 | /** |
| 61 | * Atomic Subtract a value from the value at addr. addr[0] -= value |
| 62 | * |
| 63 | * @param addr Address of value to modify |
| 64 | * @param value Amount to subtract from the value at addr |
| 65 | * |
| 66 | * @return old value |
| 67 | */ |
| 68 | extern int32_t __attribute__((overloadable)) |
| 69 | rsAtomicSub(volatile int32_t* addr, int32_t value); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 70 | |
| 71 | /** |
| 72 | * Atomic Bitwise and a value from the value at addr. addr[0] &= value |
| 73 | * |
| 74 | * @param addr Address of value to modify |
| 75 | * @param value Amount to and with the value at addr |
| 76 | * |
| 77 | * @return old value |
| 78 | */ |
| 79 | extern int32_t __attribute__((overloadable)) |
| 80 | rsAtomicAnd(volatile int32_t* addr, int32_t value); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 81 | |
| 82 | /** |
| 83 | * Atomic Bitwise or a value from the value at addr. addr[0] |= value |
| 84 | * |
| 85 | * @param addr Address of value to modify |
| 86 | * @param value Amount to or with the value at addr |
| 87 | * |
| 88 | * @return old value |
| 89 | */ |
| 90 | extern int32_t __attribute__((overloadable)) |
| 91 | rsAtomicOr(volatile int32_t* addr, int32_t value); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 92 | |
| 93 | /** |
| 94 | * Atomic Bitwise xor a value from the value at addr. addr[0] ^= value |
| 95 | * |
| 96 | * @param addr Address of value to modify |
| 97 | * @param value Amount to xor with the value at addr |
| 98 | * |
| 99 | * @return old value |
| 100 | */ |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 101 | extern int32_t __attribute__((overloadable)) |
| 102 | rsAtomicXor(volatile int32_t* addr, int32_t value); |
| 103 | |
| 104 | /** |
| 105 | * Atomic Set the value at addr to the min of addr and value |
| 106 | * addr[0] = rsMin(addr[0], value) |
| 107 | * |
| 108 | * @param addr Address of value to modify |
| 109 | * @param value comparison value |
| 110 | * |
| 111 | * @return old value |
| 112 | */ |
| 113 | extern uint32_t __attribute__((overloadable)) |
| 114 | rsAtomicMin(volatile uint32_t* addr, uint32_t value); |
| 115 | /** |
| 116 | * Atomic Set the value at addr to the min of addr and value |
| 117 | * addr[0] = rsMin(addr[0], value) |
| 118 | * |
| 119 | * @param addr Address of value to modify |
| 120 | * @param value comparison value |
| 121 | * |
| 122 | * @return old value |
| 123 | */ |
| 124 | extern int32_t __attribute__((overloadable)) |
| 125 | rsAtomicMin(volatile int32_t* addr, int32_t value); |
| 126 | |
| 127 | /** |
| 128 | * Atomic Set the value at addr to the max of addr and value |
| 129 | * addr[0] = rsMax(addr[0], value) |
| 130 | * |
| 131 | * @param addr Address of value to modify |
| 132 | * @param value comparison value |
| 133 | * |
| 134 | * @return old value |
| 135 | */ |
| 136 | extern uint32_t __attribute__((overloadable)) |
| 137 | rsAtomicMax(volatile uint32_t* addr, uint32_t value); |
| 138 | /** |
| 139 | * Atomic Set the value at addr to the max of addr and value |
| 140 | * addr[0] = rsMin(addr[0], value) |
| 141 | * |
| 142 | * @param addr Address of value to modify |
| 143 | * @param value comparison value |
| 144 | * |
| 145 | * @return old value |
| 146 | */ |
| 147 | extern int32_t __attribute__((overloadable)) |
| 148 | rsAtomicMax(volatile int32_t* addr, int32_t value); |
| 149 | |
| 150 | /** |
| 151 | * Compare-and-set operation with a full memory barrier. |
| 152 | * |
| 153 | * If the value at addr matches compareValue then newValue is written. |
| 154 | * |
| 155 | * @param addr The address to compare and replace if the compare passes. |
| 156 | * @param compareValue The value to test addr[0] against. |
| 157 | * @param newValue The value to write if the test passes. |
| 158 | * |
| 159 | * @return old value |
| 160 | */ |
| 161 | extern int32_t __attribute__((overloadable)) |
| 162 | rsAtomicCas(volatile int32_t* addr, int32_t compareValue, int32_t newValue); |
| 163 | |
| 164 | /** |
| 165 | * Compare-and-set operation with a full memory barrier. |
| 166 | * |
| 167 | * If the value at addr matches compareValue then newValue is written. |
| 168 | * |
| 169 | * @param addr The address to compare and replace if the compare passes. |
| 170 | * @param compareValue The value to test addr[0] against. |
| 171 | * @param newValue The value to write if the test passes. |
| 172 | * |
| 173 | * @return old value |
| 174 | */ |
| 175 | extern uint32_t __attribute__((overloadable)) |
Stephen Hines | fa54999 | 2012-01-25 18:17:34 -0800 | [diff] [blame] | 176 | rsAtomicCas(volatile uint32_t* addr, uint32_t compareValue, uint32_t newValue); |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 177 | |
Alex Sakhartchouk | 4325387 | 2011-09-28 15:23:18 -0700 | [diff] [blame] | 178 | #endif //defined(RS_VERSION) && (RS_VERSION >= 14) |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 179 | |
Jason Sams | 8e1f8dc | 2014-03-03 18:15:47 -0800 | [diff] [blame] | 180 | #if (defined(RS_VERSION) && (RS_VERSION >= 21)) |
| 181 | |
| 182 | /** |
| 183 | * Atomic add one to the value at addr. |
| 184 | * Equal to rsAtomicAdd(addr, 1) |
| 185 | * |
| 186 | * @param addr Address of value to increment |
| 187 | * |
| 188 | * @return old value |
| 189 | */ |
| 190 | extern int32_t __attribute__((overloadable)) |
| 191 | rsAtomicInc(volatile uint32_t* addr); |
| 192 | |
| 193 | /** |
| 194 | * Atomic subtract one from the value at addr. Equal to rsAtomicSub(addr, 1) |
| 195 | * |
| 196 | * @param addr Address of value to decrement |
| 197 | * |
| 198 | * @return old value |
| 199 | */ |
| 200 | extern int32_t __attribute__((overloadable)) |
| 201 | rsAtomicDec(volatile uint32_t* addr); |
| 202 | |
| 203 | /** |
| 204 | * Atomic add a value to the value at addr. addr[0] += value |
| 205 | * |
| 206 | * @param addr Address of value to modify |
| 207 | * @param value Amount to add to the value at addr |
| 208 | * |
| 209 | * @return old value |
| 210 | */ |
| 211 | extern int32_t __attribute__((overloadable)) |
| 212 | rsAtomicAdd(volatile uint32_t* addr, uint32_t value); |
| 213 | |
| 214 | /** |
| 215 | * Atomic Subtract a value from the value at addr. addr[0] -= value |
| 216 | * |
| 217 | * @param addr Address of value to modify |
| 218 | * @param value Amount to subtract from the value at addr |
| 219 | * |
| 220 | * @return old value |
| 221 | */ |
| 222 | extern int32_t __attribute__((overloadable)) |
| 223 | rsAtomicSub(volatile uint32_t* addr, uint32_t value); |
| 224 | |
| 225 | /** |
| 226 | * Atomic Bitwise and a value from the value at addr. addr[0] &= value |
| 227 | * |
| 228 | * @param addr Address of value to modify |
| 229 | * @param value Amount to and with the value at addr |
| 230 | * |
| 231 | * @return old value |
| 232 | */ |
| 233 | extern int32_t __attribute__((overloadable)) |
| 234 | rsAtomicAnd(volatile uint32_t* addr, uint32_t value); |
| 235 | |
| 236 | /** |
| 237 | * Atomic Bitwise or a value from the value at addr. addr[0] |= value |
| 238 | * |
| 239 | * @param addr Address of value to modify |
| 240 | * @param value Amount to or with the value at addr |
| 241 | * |
| 242 | * @return old value |
| 243 | */ |
| 244 | extern int32_t __attribute__((overloadable)) |
| 245 | rsAtomicOr(volatile uint32_t* addr, uint32_t value); |
| 246 | |
| 247 | /** |
| 248 | * Atomic Bitwise xor a value from the value at addr. addr[0] ^= value |
| 249 | * |
| 250 | * @param addr Address of value to modify |
| 251 | * @param value Amount to xor with the value at addr |
| 252 | * |
| 253 | * @return old value |
| 254 | */ |
| 255 | extern int32_t __attribute__((overloadable)) |
| 256 | rsAtomicXor(volatile uint32_t* addr, uint32_t value); |
| 257 | |
| 258 | #endif //defined(RS_VERSION) && (RS_VERSION >= 21) |
| 259 | |
Jason Sams | 044e2ee | 2011-08-08 16:52:30 -0700 | [diff] [blame] | 260 | #endif |
| 261 | |