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/*
* Copyright (c) 2005, Eric Crahen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __ZTATOMICCOUNTIMPL_H__
#define __ZTATOMICCOUNTIMPL_H__
#include <asm/atomic.h>
#include <assert.h>
namespace ZThread {
typedef struct atomic_count_t {
atomic_t count;
atomic_count_t() {
atomic_t init = ATOMIC_INIT(0);
count = init;
}
~atomic_count_t() {
assert(atomic_read(&count) == 0);
}
} ATOMIC_COUNT;
AtomicCount::AtomicCount() {
_value = reinterpret_cast<void*>(new ATOMIC_COUNT);
}
AtomicCount::~AtomicCount() {
delete reinterpret_cast<ATOMIC_COUNT*>(_value);
}
void AtomicCount::increment() {
atomic_inc(&reinterpret_cast<ATOMIC_COUNT*>(_value)->count);
}
bool AtomicCount::decrement() {
return atomic_dec_and_test(&reinterpret_cast<ATOMIC_COUNT*>(_value)->count);
}
};
#endif // __ZTATOMICCOUNTIMPL_H__
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