ardupilot/libraries/AP_HAL_Linux/Semaphores.h


#ifndef __AP_HAL_LINUX_SEMAPHORE_H__
#define __AP_HAL_LINUX_SEMAPHORE_H__

#include <AP_HAL/AP_HAL_Boards.h>

#if CONFIG_HAL_BOARD == HAL_BOARD_LINUX
#include "AP_HAL_Linux.h"
#include <pthread.h>

class Linux::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

#endif // __AP_HAL_LINUX_SEMAPHORE_H__
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00
			`#ifndef __AP_HAL_LINUX_SEMAPHORE_H__`
			`#define __AP_HAL_LINUX_SEMAPHORE_H__`

AP_HAL_Linux: standardize inclusion of libaries headers This commit changes the way libraries headers are included in source files: - If the header is in the same directory the source belongs to, so the notation '#include ""' is used with the path relative to the directory containing the source. - If the header is outside the directory containing the source, then we use the notation '#include <>' with the path relative to libraries folder. Some of the advantages of such approach: - Only one search path for libraries headers. - OSs like Windows may have a better lookup time. 2015-08-11 03:28:43 -03:00			`#include <AP_HAL/AP_HAL_Boards.h>`
AP_HAL_Linux: fixed APM2 build 2013-09-29 01:24:55 -03:00
HAL_Linux: use board subtypes 2014-07-06 23:03:26 -03:00			`#if CONFIG_HAL_BOARD == HAL_BOARD_LINUX`
AP_HAL_Linux: standardize inclusion of libaries headers This commit changes the way libraries headers are included in source files: - If the header is in the same directory the source belongs to, so the notation '#include ""' is used with the path relative to the directory containing the source. - If the header is outside the directory containing the source, then we use the notation '#include <>' with the path relative to libraries folder. Some of the advantages of such approach: - Only one search path for libraries headers. - OSs like Windows may have a better lookup time. 2015-08-11 03:28:43 -03:00			`#include "AP_HAL_Linux.h"`
HAL_Linux: use pthread mutexes for semaphores 2013-09-28 18:49:30 -03:00			`#include <pthread.h>`
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00
AP_HAL_Linux: remove prefix from AP_HAL_Linux classes We have already a Linux namespace, so there's no need to prefix Linux on all names. 2015-10-20 18:13:25 -03:00			`class Linux::Semaphore : public AP_HAL::Semaphore {`
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00			`public:`
AP_HAL_Linux: remove prefix from AP_HAL_Linux classes We have already a Linux namespace, so there's no need to prefix Linux on all names. 2015-10-20 18:13:25 -03:00			`Semaphore() {`
HAL_Linux: use pthread mutexes for semaphores 2013-09-28 18:49:30 -03:00			`pthread_mutex_init(&_lock, NULL);`
			`}`
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00			`bool give();`
			`bool take(uint32_t timeout_ms);`
			`bool take_nonblocking();`
			`private:`
HAL_Linux: use pthread mutexes for semaphores 2013-09-28 18:49:30 -03:00			`pthread_mutex_t _lock;`
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00			`};`
AP_HAL_Linux: fixed APM2 build 2013-09-29 01:24:55 -03:00			`#endif // CONFIG_HAL_BOARD`
AP_HAL_Linux: initial Linux AP_HAL 2013-09-22 03:01:24 -03:00
			`#endif // __AP_HAL_LINUX_SEMAPHORE_H__`