LCOM1920-T02G10

#ifndef _MTHREAD_H

#define _MTHREAD_H

#include <minix/config.h>        /* MUST be first */

#include <minix/const.h>

#include <sys/types.h>

#include <stdio.h>

#include <ucontext.h>

#include <errno.h>

#include <stdlib.h>

#include <limits.h>

#include <sys/signal.h>

typedef int mthread_thread_t;

typedef int mthread_once_t;

typedef int mthread_key_t;

typedef void * mthread_condattr_t;

typedef void * mthread_mutexattr_t;

struct __mthread_tcb;

typedef struct {

  struct __mthread_tcb *mq_head;

  struct __mthread_tcb *mq_tail;

} mthread_queue_t;

struct __mthread_mutex {

  mthread_queue_t mm_queue;        /* Queue of threads blocked on this mutex */

  mthread_thread_t mm_owner;        /* Thread ID that currently owns mutex */

#ifdef MTHREAD_STRICT

  struct __mthread_mutex *mm_prev;

  struct __mthread_mutex *mm_next;

#endif

  unsigned int mm_magic;

};

typedef struct __mthread_mutex *mthread_mutex_t;

struct __mthread_cond {

  struct __mthread_mutex *mc_mutex;        /* Associate mutex with condition */

#ifdef MTHREAD_STRICT

  struct __mthread_cond *mc_prev;

  struct __mthread_cond *mc_next;

#endif

  unsigned int mc_magic;

};

typedef struct __mthread_cond *mthread_cond_t;

struct __mthread_attr {

  size_t ma_stacksize;

  char *ma_stackaddr;

  int ma_detachstate;

  struct __mthread_attr *ma_prev;

  struct __mthread_attr *ma_next;

}; 

typedef struct __mthread_attr *mthread_attr_t;

typedef struct {

  mthread_mutex_t mutex;

  mthread_cond_t cond;

} mthread_event_t;

typedef struct {

  unsigned int readers;

  mthread_thread_t writer;

  mthread_mutex_t queue;

  mthread_event_t drain;

} mthread_rwlock_t; 

#define MTHREAD_CREATE_JOINABLE 001

#define MTHREAD_CREATE_DETACHED 002

#define MTHREAD_ONCE_INIT 0

#define MTHREAD_STACK_MIN MINSIGSTKSZ

#define MTHREAD_KEYS_MAX 128

__BEGIN_DECLS

/* allocate.c */

int mthread_create(mthread_thread_t *thread, mthread_attr_t *tattr, void

        *(*proc)(void *), void *arg);

int mthread_detach(mthread_thread_t thread);

int mthread_equal(mthread_thread_t l, mthread_thread_t r);

void mthread_exit(void *value);

int mthread_join(mthread_thread_t thread, void **value);

int mthread_once(mthread_once_t *once, void (*proc)(void));

mthread_thread_t mthread_self(void);

/* attribute.c */

int mthread_attr_destroy(mthread_attr_t *tattr);

int mthread_attr_getdetachstate(mthread_attr_t *tattr, int

        *detachstate);

int mthread_attr_getstack(mthread_attr_t *tattr, void **stackaddr,

        size_t *stacksize);

int mthread_attr_getstacksize(mthread_attr_t *tattr, size_t *stacksize);

int mthread_attr_init(mthread_attr_t *tattr);

int mthread_attr_setdetachstate(mthread_attr_t *tattr, int detachstate);

int mthread_attr_setstack(mthread_attr_t *tattr, void *stackaddr, size_t

        stacksize);

int mthread_attr_setstacksize(mthread_attr_t *tattr, size_t stacksize);

/* condition.c */

int mthread_cond_broadcast(mthread_cond_t *cond);

int mthread_cond_destroy(mthread_cond_t *cond);

int mthread_cond_init(mthread_cond_t *cond, mthread_condattr_t *cattr);

int mthread_cond_signal(mthread_cond_t *cond);

int mthread_cond_wait(mthread_cond_t *cond, mthread_mutex_t *mutex);

/* key.c */

int mthread_key_create(mthread_key_t *key, void (*destructor)(void *));

int mthread_key_delete(mthread_key_t key);

void *mthread_getspecific(mthread_key_t key);

int mthread_setspecific(mthread_key_t key, void *value);

/* misc.c */

void mthread_stats(void);

void mthread_verify_f(char *f, int l);

#define mthread_verify() mthread_verify_f(__FILE__, __LINE__)

void mthread_stacktrace(mthread_thread_t t);

void mthread_stacktraces(void);

/* mutex.c */

int mthread_mutex_destroy(mthread_mutex_t *mutex);

int mthread_mutex_init(mthread_mutex_t *mutex, mthread_mutexattr_t

        *mattr);

int mthread_mutex_lock(mthread_mutex_t *mutex);

int mthread_mutex_trylock(mthread_mutex_t *mutex);

int mthread_mutex_unlock(mthread_mutex_t *mutex);

/* event.c */

int mthread_event_destroy(mthread_event_t *event);

int mthread_event_init(mthread_event_t *event);

int mthread_event_wait(mthread_event_t *event);

int mthread_event_fire(mthread_event_t *event);

int mthread_event_fire_all(mthread_event_t *event);

/* rwlock.c */

int mthread_rwlock_destroy(mthread_rwlock_t *rwlock);

int mthread_rwlock_init(mthread_rwlock_t *rwlock);

int mthread_rwlock_rdlock(mthread_rwlock_t *rwlock);

int mthread_rwlock_wrlock(mthread_rwlock_t *rwlock);

int mthread_rwlock_unlock(mthread_rwlock_t *rwlock);

/* schedule.c */

int mthread_yield(void);

void mthread_yield_all(void);

__END_DECLS

#if defined(_MTHREADIFY_PTHREADS)

typedef mthread_thread_t pthread_t;

typedef mthread_once_t pthread_once_t;

typedef mthread_key_t pthread_key_t;

typedef mthread_cond_t pthread_cond_t;

typedef mthread_mutex_t pthread_mutex_t;

typedef mthread_condattr_t pthread_condattr_t;

typedef mthread_mutexattr_t pthread_mutexattr_t;

typedef mthread_attr_t pthread_attr_t;

typedef mthread_event_t pthread_event_t;

typedef mthread_rwlock_t pthread_rwlock_t;

/* LSC: No equivalent, so void* for now. */

typedef void *pthread_rwlockattr_t;

#define PTHREAD_ONCE_INIT 0

#define PTHREAD_MUTEX_INITIALIZER ((pthread_mutex_t) -1)

#define PTHREAD_COND_INITIALIZER ((pthread_cond_t) -1)

__BEGIN_DECLS

/* allocate.c */

int pthread_create(pthread_t *thread, pthread_attr_t *tattr, void

        *(*proc)(void *), void *arg);

int pthread_detach(pthread_t thread);

int pthread_equal(pthread_t l, pthread_t r);

void pthread_exit(void *value);

int pthread_join(pthread_t thread, void **value);

int pthread_once(pthread_once_t *once, void (*proc)(void));

pthread_t pthread_self(void);

/* attribute.c */

int pthread_attr_destroy(pthread_attr_t *tattr);

int pthread_attr_getdetachstate(pthread_attr_t *tattr, int

        *detachstate);

int pthread_attr_getstack(pthread_attr_t *tattr, void **stackaddr,

        size_t *stacksize);

int pthread_attr_getstacksize(pthread_attr_t *tattr, size_t *stacksize);

int pthread_attr_init(pthread_attr_t *tattr);

int pthread_attr_setdetachstate(pthread_attr_t *tattr, int detachstate);

int pthread_attr_setstack(pthread_attr_t *tattr, void *stackaddr, size_t

        stacksize);

int pthread_attr_setstacksize(pthread_attr_t *tattr, size_t stacksize);

/* condition.c */

int pthread_cond_broadcast(pthread_cond_t *cond);

int pthread_cond_destroy(pthread_cond_t *cond);

int pthread_cond_init(pthread_cond_t *cond, pthread_condattr_t *cattr);

int pthread_cond_signal(pthread_cond_t *cond);

int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);

/* key.c */

int pthread_key_create(pthread_key_t *key, void (*destructor)(void *));

int pthread_key_delete(pthread_key_t key);

void *pthread_getspecific(pthread_key_t key);

int pthread_setspecific(pthread_key_t key, void *value);

/* mutex.c */

int pthread_mutex_destroy(pthread_mutex_t *mutex);

int pthread_mutex_init(pthread_mutex_t *mutex, pthread_mutexattr_t

        *mattr);

int pthread_mutex_lock(pthread_mutex_t *mutex);

int pthread_mutex_trylock(pthread_mutex_t *mutex);

int pthread_mutex_unlock(pthread_mutex_t *mutex);

/* event.c */

int pthread_event_destroy(pthread_event_t *event);

int pthread_event_init(pthread_event_t *event);

int pthread_event_wait(pthread_event_t *event);

int pthread_event_fire(pthread_event_t *event);

int pthread_event_fire_all(pthread_event_t *event);

/* rwlock.c */

int pthread_rwlock_destroy(pthread_rwlock_t *rwlock);

int pthread_rwlock_init(pthread_rwlock_t *rwlock,

        pthread_rwlockattr_t *UNUSED(attr));

int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock);

int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);

int pthread_rwlock_unlock(pthread_rwlock_t *rwlock);

/* schedule.c */

int pthread_yield(void);

int sched_yield(void);

void pthread_yield_all(void);

/* LSC: FIXME: Maybe we should really do something with those... */

#define pthread_mutexattr_init(u) (0)

#define pthread_mutexattr_destroy(u) (0)

#define PTHREAD_MUTEX_RECURSIVE 0

#define pthread_mutexattr_settype(x, y) (EINVAL)

__END_DECLS

#endif /* defined(_MTHREADIFY_PTHREADS) */

#endif