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#pragma once
#include "defaults.h"
#include <util/generic/ptr.h>
// named sempahore
class TSemaphore {
public:
TSemaphore(const char* name, ui32 maxFreeCount);
~TSemaphore();
// Increase the semaphore counter.
void Release() noexcept;
// Keep a thread held while the semaphore counter is equal 0.
void Acquire() noexcept;
// Try to enter the semaphore gate. A non-blocking variant of Acquire.
// Returns 'true' if the semaphore counter decreased
bool TryAcquire() noexcept;
private:
class TImpl;
THolder<TImpl> Impl_;
};
// unnamed semaphore, faster, than previous
class TFastSemaphore {
public:
TFastSemaphore(ui32 maxFreeCount);
~TFastSemaphore();
void Release() noexcept;
void Acquire() noexcept;
bool TryAcquire() noexcept;
private:
class TImpl;
THolder<TImpl> Impl_;
};
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