ardupilot/libraries/AP_HAL_QURT/Semaphores.h

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#pragma once
#include <AP_HAL/AP_HAL_Boards.h>
#if CONFIG_HAL_BOARD == HAL_BOARD_QURT
#include "AP_HAL_QURT.h"
#include <pthread.h>
class QURT::Semaphore : public AP_HAL::Semaphore {
public:
Semaphore() {
pthread_mutex_init(&_lock, NULL);
}
bool give();
bool take(uint32_t timeout_ms);
bool take_nonblocking();
private:
pthread_mutex_t _lock;
};
#endif // CONFIG_HAL_BOARD