39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
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#pragma once
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#include "../Atomic.h"
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namespace baselib
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{
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BASELIB_CPP_INTERFACE
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{
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namespace detail
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{
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struct ConditionVariableData
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{
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atomic<int32_t> waiters;
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atomic<int32_t> wakeups;
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ConditionVariableData() : waiters(0), wakeups(0) {}
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inline bool HasWaiters() const
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{
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return waiters.load(memory_order_acquire) > 0;
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}
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inline bool TryConsumeWakeup()
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{
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int32_t previousCount = wakeups.load(memory_order_relaxed);
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while (previousCount > 0)
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{
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if (wakeups.compare_exchange_weak(previousCount, previousCount - 1, memory_order_acquire, memory_order_relaxed))
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{
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return true;
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}
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}
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return false;
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}
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};
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}
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}
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}
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