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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/** @file rs_atomic.rsh
* \brief Atomic routines
*
*
*/
#ifndef __RS_ATOMIC_RSH__
#define __RS_ATOMIC_RSH__
#if (defined(RS_VERSION) && (RS_VERSION >= 14))
/**
* Atomic add one to the value at addr.
* Equal to rsAtomicAdd(addr, 1)
*
* @param addr Address of value to increment
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicInc(volatile int32_t* addr);
/**
* Atomic add one to the value at addr.
* Equal to rsAtomicAdd(addr, 1)
*
* @param addr Address of value to increment
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicInc(volatile uint32_t* addr);
/**
* Atomic subtract one from the value at addr. Equal to rsAtomicSub(addr, 1)
*
* @param addr Address of value to decrement
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicDec(volatile int32_t* addr);
/**
* Atomic subtract one from the value at addr. Equal to rsAtomicSub(addr, 1)
*
* @param addr Address of value to decrement
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicDec(volatile uint32_t* addr);
/**
* Atomic add a value to the value at addr. addr[0] += value
*
* @param addr Address of value to modify
* @param value Amount to add to the value at addr
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicAdd(volatile int32_t* addr, int32_t value);
/**
* Atomic add a value to the value at addr. addr[0] += value
*
* @param addr Address of value to modify
* @param value Amount to add to the value at addr
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicAdd(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Subtract a value from the value at addr. addr[0] -= value
*
* @param addr Address of value to modify
* @param value Amount to subtract from the value at addr
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicSub(volatile int32_t* addr, int32_t value);
/**
* Atomic Subtract a value from the value at addr. addr[0] -= value
*
* @param addr Address of value to modify
* @param value Amount to subtract from the value at addr
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicSub(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Bitwise and a value from the value at addr. addr[0] &= value
*
* @param addr Address of value to modify
* @param value Amount to and with the value at addr
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicAnd(volatile int32_t* addr, int32_t value);
/**
* Atomic Bitwise and a value from the value at addr. addr[0] &= value
*
* @param addr Address of value to modify
* @param value Amount to and with the value at addr
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicAnd(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Bitwise or a value from the value at addr. addr[0] |= value
*
* @param addr Address of value to modify
* @param value Amount to or with the value at addr
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicOr(volatile int32_t* addr, int32_t value);
/**
* Atomic Bitwise or a value from the value at addr. addr[0] |= value
*
* @param addr Address of value to modify
* @param value Amount to or with the value at addr
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicOr(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Bitwise xor a value from the value at addr. addr[0] ^= value
*
* @param addr Address of value to modify
* @param value Amount to xor with the value at addr
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicXor(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Bitwise xor a value from the value at addr. addr[0] ^= value
*
* @param addr Address of value to modify
* @param value Amount to xor with the value at addr
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicXor(volatile int32_t* addr, int32_t value);
/**
* Atomic Set the value at addr to the min of addr and value
* addr[0] = rsMin(addr[0], value)
*
* @param addr Address of value to modify
* @param value comparison value
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicMin(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Set the value at addr to the min of addr and value
* addr[0] = rsMin(addr[0], value)
*
* @param addr Address of value to modify
* @param value comparison value
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicMin(volatile int32_t* addr, int32_t value);
/**
* Atomic Set the value at addr to the max of addr and value
* addr[0] = rsMax(addr[0], value)
*
* @param addr Address of value to modify
* @param value comparison value
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicMax(volatile uint32_t* addr, uint32_t value);
/**
* Atomic Set the value at addr to the max of addr and value
* addr[0] = rsMin(addr[0], value)
*
* @param addr Address of value to modify
* @param value comparison value
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicMax(volatile int32_t* addr, int32_t value);
/**
* Compare-and-set operation with a full memory barrier.
*
* If the value at addr matches compareValue then newValue is written.
*
* @param addr The address to compare and replace if the compare passes.
* @param compareValue The value to test addr[0] against.
* @param newValue The value to write if the test passes.
*
* @return old value
*/
extern int32_t __attribute__((overloadable))
rsAtomicCas(volatile int32_t* addr, int32_t compareValue, int32_t newValue);
/**
* Compare-and-set operation with a full memory barrier.
*
* If the value at addr matches compareValue then newValue is written.
*
* @param addr The address to compare and replace if the compare passes.
* @param compareValue The value to test addr[0] against.
* @param newValue The value to write if the test passes.
*
* @return old value
*/
extern uint32_t __attribute__((overloadable))
rsAtomicCas(volatile uint32_t* addr, uint32_t compareValue, uint32_t newValue);
#endif //defined(RS_VERSION) && (RS_VERSION >= 14)
#endif
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