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android/tools/android-osx/build-tools/19.1.0/renderscript/include/rs_atomic.rsh

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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
+