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#pragma once
#include <util/system/defaults.h>
using TAtomicBase = intptr_t;
using TAtomic = volatile TAtomicBase;
#if defined(__GNUC__)
#include "atomic_gcc.h"
#elif defined(_MSC_VER)
#include "atomic_win.h"
#else
#error unsupported platform
#endif
#if !defined(ATOMIC_COMPILER_BARRIER)
#define ATOMIC_COMPILER_BARRIER()
#endif
static inline TAtomicBase AtomicSub(TAtomic& a, TAtomicBase v) {
return AtomicAdd(a, -v);
}
static inline TAtomicBase AtomicGetAndSub(TAtomic& a, TAtomicBase v) {
return AtomicGetAndAdd(a, -v);
}
#if defined(USE_GENERIC_SETGET)
static inline TAtomicBase AtomicGet(const TAtomic& a) {
return a;
}
static inline void AtomicSet(TAtomic& a, TAtomicBase v) {
a = v;
}
#endif
static inline bool AtomicTryLock(TAtomic* a) {
return AtomicCas(a, 1, 0);
}
static inline bool AtomicTryAndTryLock(TAtomic* a) {
return (AtomicGet(*a) == 0) && AtomicTryLock(a);
}
static inline void AtomicUnlock(TAtomic* a) {
ATOMIC_COMPILER_BARRIER();
AtomicSet(*a, 0);
}
#include "atomic_ops.h"
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