53 lines
983 B
C++
53 lines
983 B
C++
#pragma once
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// espressif includes
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#include <freertos/FreeRTOS.h>
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#include <freertos/semphr.h>
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// local includes
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#include "esputils.h"
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namespace espcpputils {
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class RecursiveLockHelper
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{
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ESP_DISABLE_COPY_MOVE(RecursiveLockHelper)
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public:
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RecursiveLockHelper(QueueHandle_t _xMutex, TickType_t xTicksToWait=portMAX_DELAY) :
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xMutex{_xMutex}
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{
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locked = xSemaphoreTakeRecursive(xMutex, xTicksToWait);
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}
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~RecursiveLockHelper()
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{
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if (locked)
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xSemaphoreGiveRecursive(xMutex);
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}
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bool lock(TickType_t xTicksToWait=portMAX_DELAY)
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{
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if (locked)
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return false;
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locked = xSemaphoreTakeRecursive(xMutex, xTicksToWait);
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return locked;
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}
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bool unlock()
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{
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if (!locked)
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return false;
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locked = !xSemaphoreGiveRecursive(xMutex);
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return locked;
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}
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private:
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const QueueHandle_t xMutex;
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bool locked;
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};
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} // namespace espcpputils
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