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#ifndef _PLATFORM_H_
#define _PLATFORM_H_
#include <pthread.h>
#include <semaphore.h>
int nr_cpus(void);
int set_thread_affinity(pthread_t tid, int core);
/*
* macOS does not support sem_init(). macOS (seems to) releases the
* named semaphore when associated mscp process finished. In linux,
* program (seems to) need to release named semaphore in /dev/shm by
* sem_unlink() explicitly. So, using sem_init() (unnamed semaphore)
* in linux and using sem_open() (named semaphore) in macOS without
* sem_unlink() are reasonable (?).
*/
sem_t *sem_create(int value);
int sem_release(sem_t *sem);
#endif /* _PLATFORM_H_ */
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