64 lines
1.2 KiB
C++
64 lines
1.2 KiB
C++
/**
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* @file mutex.h
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* Mutex
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*/
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#pragma once
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#include "Check.h"
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#include "Lock.h"
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#include "RtosCompatSemaphore.h"
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#include "Thread.h"
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#include "kernel/Kernel.h"
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#include <memory>
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namespace tt {
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/**
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* Wrapper for FreeRTOS xSemaphoreCreateMutex and xSemaphoreCreateRecursiveMutex
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* Cannot be used in IRQ mode (within ISR context)
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*/
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class Mutex final : public Lock {
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public:
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enum class Type {
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Normal,
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Recursive,
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};
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private:
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struct SemaphoreHandleDeleter {
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void operator()(QueueHandle_t handleToDelete) {
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assert(!kernel::isIsr());
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vSemaphoreDelete(handleToDelete);
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}
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};
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std::unique_ptr<std::remove_pointer_t<QueueHandle_t>, SemaphoreHandleDeleter> handle;
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Type type;
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public:
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using Lock::lock;
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explicit Mutex(Type type = Type::Normal);
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~Mutex() final = default;
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/** Attempt to lock the mutex. Blocks until timeout passes or lock is acquired.
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* @param[in] timeout
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* @return success result
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*/
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bool lock(TickType_t timeout) const final;
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/** Attempt to unlock the mutex.
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* @return success result
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*/
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bool unlock() const final;
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/** @return the owner of the thread */
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ThreadId getOwner() const;
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};
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} // namespace
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