/* SPDX-License-Identifier: GPL-3.0-only */
#ifndef _PLATFORM_H_
#define _PLATFORM_H_

#include <pthread.h>
#include <semaphore.h>
#include <stdint.h>

int nr_cpus(void);
int set_thread_affinity(pthread_t tid, int core);
int setutimes(const char *path, struct timespec atime, struct timespec mtime);

/*
 * 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);

#ifdef HAVE_HTONLL
#include <arpa/inet.h> /* Apple has htonll and ntohll in arpa/inet.h */
#endif

/* copied from libssh: libssh/include/libssh/priv.h*/
#ifndef HAVE_HTONLL
#ifdef WORDS_BIGENDIAN
#define htonll(x) (x)
#else
#define htonll(x) (((uint64_t)htonl((x)&0xFFFFFFFF) << 32) | htonl((x) >> 32))
#endif
#endif

#ifndef HAVE_NTOHLL
#ifdef WORDS_BIGENDIAN
#define ntohll(x) (x)
#else
#define ntohll(x) (((uint64_t)ntohl((x)&0xFFFFFFFF) << 32) | ntohl((x) >> 32))
#endif
#endif

#endif /* _PLATFORM_H_ */