/*-
 * SPDX-License-Identifier: BSD-4-Clause
 *
 * Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
 * Copyright (c) 1995-1998 by John Birrell <jb@cimlogic.com.au>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by Chris Provenzano.
 * 4. The name of Chris Provenzano may not be used to endorse or promote 
 *        products derived from this software without specific prior written
 *        permission.
 *
 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY 
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE.
 */
#ifndef _PTHREAD_H_
#define _PTHREAD_H_

/*
 * Header files.
 */
#include <sys/cdefs.h>
#include <sys/_pthreadtypes.h>
#include <machine/_limits.h>
#include <sys/_types.h>
#include <sys/_sigset.h>
#if __BSD_VISIBLE
#include <sys/_sigval.h>
#endif
#include <sched.h>
#include <time.h>

/*
 * Run-time invariant values:
 */
#define PTHREAD_DESTRUCTOR_ITERATIONS           4
#define PTHREAD_KEYS_MAX                        256
#define PTHREAD_STACK_MIN                       __MINSIGSTKSZ
#define PTHREAD_THREADS_MAX                     __ULONG_MAX
#define PTHREAD_BARRIER_SERIAL_THREAD           -1

/*
 * Flags for threads and thread attributes.
 */
#define PTHREAD_DETACHED                0x1
#define PTHREAD_SCOPE_SYSTEM            0x2
#define PTHREAD_INHERIT_SCHED           0x4
#define PTHREAD_NOFLOAT                 0x8

#define PTHREAD_CREATE_DETACHED         PTHREAD_DETACHED
#define PTHREAD_CREATE_JOINABLE         0
#define PTHREAD_SCOPE_PROCESS           0
#define PTHREAD_EXPLICIT_SCHED          0

/*
 * Values for process shared/private attributes.
 */
#define PTHREAD_PROCESS_PRIVATE         0
#define PTHREAD_PROCESS_SHARED          1

/*
 * Flags for cancelling threads
 */
#define PTHREAD_CANCEL_ENABLE           0
#define PTHREAD_CANCEL_DISABLE          1
#define PTHREAD_CANCEL_DEFERRED         0
#define PTHREAD_CANCEL_ASYNCHRONOUS     2
#define PTHREAD_CANCELED                ((void *) 1)

/*
 * Flags for once initialization.
 */
#define PTHREAD_NEEDS_INIT      0
#define PTHREAD_DONE_INIT       1

/*
 * Static once initialization values.
 */
#define PTHREAD_ONCE_INIT       { PTHREAD_NEEDS_INIT, NULL }

/*
 * Static initialization values.
 */
#define PTHREAD_MUTEX_INITIALIZER       NULL
#define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP   ((pthread_mutex_t)1)
#define PTHREAD_COND_INITIALIZER        NULL
#define PTHREAD_RWLOCK_INITIALIZER      NULL

/*
 * Default attribute arguments (draft 4, deprecated).
 */
#ifndef PTHREAD_KERNEL
#define pthread_condattr_default        NULL
#define pthread_mutexattr_default       NULL
#define pthread_attr_default            NULL
#endif

#define PTHREAD_PRIO_NONE       0
#define PTHREAD_PRIO_INHERIT    1
#define PTHREAD_PRIO_PROTECT    2

/*
 * Mutex types (Single UNIX Specification, Version 2, 1997).
 *
 * Note that a mutex attribute with one of the following types:
 *
 *      PTHREAD_MUTEX_NORMAL
 *      PTHREAD_MUTEX_RECURSIVE
 *
 * will deviate from POSIX specified semantics.
 */
enum pthread_mutextype {
        PTHREAD_MUTEX_ERRORCHECK        = 1,    /* Default POSIX mutex */
        PTHREAD_MUTEX_RECURSIVE         = 2,    /* Recursive mutex */
        PTHREAD_MUTEX_NORMAL            = 3,    /* No error checking */
        PTHREAD_MUTEX_ADAPTIVE_NP       = 4,    /* Adaptive mutex, spins briefly before blocking on lock */
        PTHREAD_MUTEX_TYPE_MAX
};

#define PTHREAD_MUTEX_DEFAULT           PTHREAD_MUTEX_ERRORCHECK

#define PTHREAD_MUTEX_STALLED           0
#define PTHREAD_MUTEX_ROBUST            1

struct _pthread_cleanup_info {
        __uintptr_t     pthread_cleanup_pad[8];
};

/*
 * Thread function prototype definitions:
 */
__BEGIN_DECLS
int             pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
int             pthread_attr_destroy(pthread_attr_t *);
int             pthread_attr_getstack(
                    const pthread_attr_t * __restrict, void ** __restrict,
                    size_t * __restrict);
int             pthread_attr_getstacksize(const pthread_attr_t * __restrict,
                    size_t * __restrict);
int             pthread_attr_getguardsize(const pthread_attr_t * __restrict,
                    size_t * __restrict);
int             pthread_attr_getstackaddr(const pthread_attr_t *, void **);
int             pthread_attr_getdetachstate(const pthread_attr_t *,
                    int *);
int             pthread_attr_init(pthread_attr_t *);
int             pthread_attr_setstacksize(pthread_attr_t *, size_t);
int             pthread_attr_setguardsize(pthread_attr_t *, size_t);
int             pthread_attr_setstack(pthread_attr_t *, void *,
                    size_t);
int             pthread_attr_setstackaddr(pthread_attr_t *, void *);
int             pthread_attr_setdetachstate(pthread_attr_t *, int);
int             pthread_barrier_destroy(pthread_barrier_t *);
int             pthread_barrier_init(pthread_barrier_t * __restrict,
                        const pthread_barrierattr_t * __restrict, unsigned);
int             pthread_barrier_wait(pthread_barrier_t *);
int             pthread_barrierattr_destroy(pthread_barrierattr_t *);
int             pthread_barrierattr_getpshared(
                    const pthread_barrierattr_t * __restrict, int * __restrict);
int             pthread_barrierattr_init(pthread_barrierattr_t *);
int             pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);

#define         pthread_cleanup_push(cleanup_routine, cleanup_arg)              \
                {                                                               \
                        struct _pthread_cleanup_info __cleanup_info__;          \
                        __pthread_cleanup_push_imp(cleanup_routine, cleanup_arg,\
                                &__cleanup_info__);                             \
                        {

#define         pthread_cleanup_pop(execute)                                    \
                                (void)0;                                        \
                        }                                                       \
                        __pthread_cleanup_pop_imp(execute);                     \
                }

int             pthread_condattr_destroy(pthread_condattr_t *);
int             pthread_condattr_getclock(const pthread_condattr_t * __restrict,
                    clockid_t * __restrict);
int             pthread_condattr_getpshared(const pthread_condattr_t *, int *);
int             pthread_condattr_init(pthread_condattr_t *);
int             pthread_condattr_setclock(pthread_condattr_t *, clockid_t);
int             pthread_condattr_setpshared(pthread_condattr_t *, int);
int             pthread_cond_broadcast(pthread_cond_t *);
int             pthread_cond_destroy(pthread_cond_t *);
int             pthread_cond_init(pthread_cond_t * __restrict,
                    const pthread_condattr_t * __restrict);
int             pthread_cond_signal(pthread_cond_t *);
int             pthread_cond_timedwait(pthread_cond_t *,
                    pthread_mutex_t * __mutex,
                    const struct timespec *)
                    __requires_exclusive(*__mutex);
int             pthread_cond_wait(pthread_cond_t * __restrict,
                    pthread_mutex_t * __restrict __mutex)
                    __requires_exclusive(*__mutex);
int             pthread_create(pthread_t * __restrict,
                    const pthread_attr_t * __restrict, void *(*) (void *),
                    void * __restrict);
int             pthread_detach(pthread_t);
int             pthread_equal(pthread_t, pthread_t);
void            pthread_exit(void *) __dead2;
void            *pthread_getspecific(pthread_key_t);
int             pthread_getcpuclockid(pthread_t, clockid_t *);
int             pthread_join(pthread_t, void **);
int             pthread_key_create(pthread_key_t *, void (*) (void *));
int             pthread_key_delete(pthread_key_t);
int             pthread_mutexattr_init(pthread_mutexattr_t *);
int             pthread_mutexattr_destroy(pthread_mutexattr_t *);
int             pthread_mutexattr_getpshared(
                    const pthread_mutexattr_t * __restrict,
                    int * __restrict);
int             pthread_mutexattr_gettype(
                    const pthread_mutexattr_t * __restrict, int * __restrict);
int             pthread_mutexattr_settype(pthread_mutexattr_t *, int);
int             pthread_mutexattr_setpshared(pthread_mutexattr_t *, int);
int             pthread_mutex_consistent(pthread_mutex_t * __mutex)
                    __requires_exclusive(*__mutex);
int             pthread_mutex_destroy(pthread_mutex_t * __mutex)
                    __requires_unlocked(*__mutex);
int             pthread_mutex_init(pthread_mutex_t * __restrict __mutex,
                    const pthread_mutexattr_t * __restrict)
                    __requires_unlocked(*__mutex);
int             pthread_mutex_lock(pthread_mutex_t * __mutex)
                    __locks_exclusive(*__mutex);
int             pthread_mutex_trylock(pthread_mutex_t * __mutex)
                    __trylocks_exclusive(0, *__mutex);
int             pthread_mutex_timedlock(pthread_mutex_t * __restrict __mutex,
                    const struct timespec * __restrict)
                    __trylocks_exclusive(0, *__mutex);
int             pthread_mutex_unlock(pthread_mutex_t * __mutex)
                    __unlocks(*__mutex);
int             pthread_once(pthread_once_t *, void (*) (void));
int             pthread_rwlock_destroy(pthread_rwlock_t * __rwlock)
                    __requires_unlocked(*__rwlock);
int             pthread_rwlock_init(pthread_rwlock_t * __restrict __rwlock,
                    const pthread_rwlockattr_t * __restrict)
                    __requires_unlocked(*__rwlock);
int             pthread_rwlock_rdlock(pthread_rwlock_t * __rwlock)
                    __locks_shared(*__rwlock);
int             pthread_rwlock_timedrdlock(
                    pthread_rwlock_t * __restrict __rwlock,
                    const struct timespec * __restrict)
                    __trylocks_shared(0, *__rwlock);
int             pthread_rwlock_timedwrlock(
                    pthread_rwlock_t * __restrict __rwlock,
                    const struct timespec * __restrict)
                    __trylocks_exclusive(0, *__rwlock);
int             pthread_rwlock_tryrdlock(pthread_rwlock_t * __rwlock)
                    __trylocks_shared(0, *__rwlock);
int             pthread_rwlock_trywrlock(pthread_rwlock_t * __rwlock)
                    __trylocks_exclusive(0, *__rwlock);
int             pthread_rwlock_unlock(pthread_rwlock_t * __rwlock)
                    __unlocks(*__rwlock);
int             pthread_rwlock_wrlock(pthread_rwlock_t * __rwlock)
                    __locks_exclusive(*__rwlock);
int             pthread_rwlockattr_destroy(pthread_rwlockattr_t *);
int             pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *,
                    int *);
int             pthread_rwlockattr_getpshared(
                    const pthread_rwlockattr_t * __restrict,
                    int * __restrict);
int             pthread_rwlockattr_init(pthread_rwlockattr_t *);
int             pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *,
                    int);
int             pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int);
pthread_t       pthread_self(void);
int             pthread_setspecific(pthread_key_t, const void *);

int             pthread_spin_init(pthread_spinlock_t * __spin, int)
                    __requires_unlocked(*__spin);
int             pthread_spin_destroy(pthread_spinlock_t * __spin)
                    __requires_unlocked(*__spin);
int             pthread_spin_lock(pthread_spinlock_t * __spin)
                        __locks_exclusive(*__spin);
int             pthread_spin_trylock(pthread_spinlock_t * __spin)
                        __trylocks_exclusive(0, *__spin);
int             pthread_spin_unlock(pthread_spinlock_t * __spin)
                        __unlocks(*__spin);
int             pthread_cancel(pthread_t);
int             pthread_setcancelstate(int, int *);
int             pthread_setcanceltype(int, int *);
void            pthread_testcancel(void);

#if __BSD_VISIBLE
int             pthread_getprio(pthread_t);
int             pthread_setprio(pthread_t, int);
void            pthread_yield(void);

int             pthread_getname_np(pthread_t, char *, size_t);
int             pthread_setname_np(pthread_t, const char *);

int             pthread_sigqueue(pthread_t thread, int sig,
                    const union sigval value);

#endif

int             pthread_mutexattr_getprioceiling(
                    const pthread_mutexattr_t * __restrict,
                    int * __restrict);
int             pthread_mutexattr_setprioceiling(pthread_mutexattr_t *, int);
int             pthread_mutex_getprioceiling(const pthread_mutex_t * __restrict,
                    int * __restrict);
int             pthread_mutex_setprioceiling(pthread_mutex_t * __restrict, int,
                    int * __restrict);

int             pthread_mutexattr_getprotocol(
                    const pthread_mutexattr_t * __restrict,
                    int * __restrict);
int             pthread_mutexattr_setprotocol(pthread_mutexattr_t *, int);

int             pthread_mutexattr_getrobust(
                    pthread_mutexattr_t * __restrict, int * __restrict);
int             pthread_mutexattr_setrobust(pthread_mutexattr_t *, int);

int             pthread_attr_getinheritsched(const pthread_attr_t * __restrict,
                    int * __restrict);
int             pthread_attr_getschedparam(const pthread_attr_t *,
                    struct sched_param *);
int             pthread_attr_getschedpolicy(const pthread_attr_t * __restrict,
                    int * __restrict);
int             pthread_attr_getscope(const pthread_attr_t * __restrict,
                    int * __restrict);
int             pthread_attr_setinheritsched(pthread_attr_t *, int);
int             pthread_attr_setschedparam(pthread_attr_t *,
                    const struct sched_param *);
int             pthread_attr_setschedpolicy(pthread_attr_t *, int);
int             pthread_attr_setscope(pthread_attr_t *, int);
int             pthread_getschedparam(pthread_t pthread, int * __restrict,
                    struct sched_param * __restrict);
int             pthread_setschedparam(pthread_t, int,
                    const struct sched_param *);
#if __XSI_VISIBLE
int             pthread_getconcurrency(void);
int             pthread_setconcurrency(int);
#endif

void            __pthread_cleanup_push_imp(void (*)(void *), void *,
                        struct _pthread_cleanup_info *);
void            __pthread_cleanup_pop_imp(int);
__END_DECLS

#endif  /* !_PTHREAD_H_ */