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// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
/**
* Wrappers for POSIX threading APIs.
*/
#ifndef BFS_THREAD_H
#define BFS_THREAD_H
#include "prelude.h"
#include <pthread.h>
#if __STDC_VERSION__ < C23 && !defined(thread_local)
# if BFS_USE_THREADS_H
# include <threads.h>
# else
# define thread_local _Thread_local
# endif
#endif
/** Thread entry point type. */
typedef void *thread_fn(void *arg);
/**
* Wrapper for pthread_create().
*
* @return
* 0 on success, -1 on error.
*/
int thread_create(pthread_t *thread, const pthread_attr_t *attr, thread_fn *fn, void *arg);
/**
* Wrapper for pthread_join().
*/
void thread_join(pthread_t thread, void **ret);
/**
* Wrapper for pthread_mutex_init().
*/
int mutex_init(pthread_mutex_t *mutex, pthread_mutexattr_t *attr);
/**
* Wrapper for pthread_mutex_lock().
*/
void mutex_lock(pthread_mutex_t *mutex);
/**
* Wrapper for pthread_mutex_trylock().
*
* @return
* Whether the mutex was locked.
*/
bool mutex_trylock(pthread_mutex_t *mutex);
/**
* Wrapper for pthread_mutex_unlock().
*/
void mutex_unlock(pthread_mutex_t *mutex);
/**
* Wrapper for pthread_mutex_destroy().
*/
void mutex_destroy(pthread_mutex_t *mutex);
/**
* Wrapper for pthread_cond_init().
*/
int cond_init(pthread_cond_t *cond, pthread_condattr_t *attr);
/**
* Wrapper for pthread_cond_wait().
*/
void cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
/**
* Wrapper for pthread_cond_signal().
*/
void cond_signal(pthread_cond_t *cond);
/**
* Wrapper for pthread_cond_broadcast().
*/
void cond_broadcast(pthread_cond_t *cond);
/**
* Wrapper for pthread_cond_destroy().
*/
void cond_destroy(pthread_cond_t *cond);
/** pthread_once() callback type. */
typedef void once_fn(void);
/**
* Wrapper for pthread_once().
*/
void invoke_once(pthread_once_t *once, once_fn *fn);
#endif // BFS_THREAD_H
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