#ifndef __pthread_h__#define __pthread_h__ typedef struct pthread_t pthread_t;typedef struct pthread_cond_t pthread_cond_t;typedef struct pthread_once_t pthread_once_t;typedef struct pthread_mutex_t pthread_mutex_t; struct pthread_cond_t {    Rendez;    QLock lock;}; struct pthread_once_t {	QLock;	int done;}; struct pthread_mutex_t {	QLock;}; #define PTHREAD_ONCE_INIT {0} struct pthread_t {    void *waitchan;    void *(*func)(void*);    void *arg;    int pid;}; typedef struct {    unsigned stack_size;} pthread_attr_t; void dav1d_set_thread_name(const char *const name);int dav1d_pthread_join(pthread_t *thread, void **res);#define pthread_join(thread, res) dav1d_pthread_join(&(thread), res) static int pthread_attr_init(pthread_attr_t *const attr) {    attr->stack_size = 0;    return 0;} static int pthread_attr_destroy(pthread_attr_t *const attr) {	USED(attr);    return 0;} static int pthread_attr_setstacksize(pthread_attr_t *const attr,                                     const int stack_size){    attr->stack_size = stack_size;    return 0;} static intpthread_mutex_trylock(pthread_mutex_t *const mutex){    return canqlock(mutex) ? 0 : -1;} int pthread_mutex_init(pthread_mutex_t *const mutex, const void *const attr);int pthread_mutex_destroy(pthread_mutex_t *const mutex);int pthread_mutex_lock(pthread_mutex_t *const mutex);int pthread_mutex_unlock(pthread_mutex_t *const mutex);int pthread_cond_init(pthread_cond_t *const cond, const void *const attr);int pthread_cond_destroy(pthread_cond_t *const cond);int pthread_cond_wait(pthread_cond_t *const cond, pthread_mutex_t *const mutex);int pthread_cond_signal(pthread_cond_t *const cond);int pthread_cond_broadcast(pthread_cond_t *const cond);int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*func)(void*), void *arg);int pthread_once(pthread_once_t *once_control, void (*init_routine)(void)); #endif