/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2003, Jeffrey Roberson <jeff@freebsd.org>
 * 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 unmodified, 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 _SYS_THR_H_
#define _SYS_THR_H_

#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/sched.h>

#ifndef _SIZE_T_DECLARED
typedef __size_t        size_t;
#define _SIZE_T_DECLARED
#endif

/* Create the thread in the suspended state. */
#define THR_SUSPENDED           0x0001
/* Create the system scope thread. */
#define THR_SYSTEM_SCOPE        0x0002
#define THR_C_RUNTIME           0x0004

struct thr_param {
    void        (*start_func)(void *);  /* thread entry function. */
    void        *arg;                   /* argument for entry function. */
    char        *stack_base;            /* stack base address. */
    size_t      stack_size;             /* stack size. */
    char        *tls_base;              /* tls base address. */
    size_t      tls_size;               /* tls size. */
    long        *child_tid;             /* address to store new TID. */
    long        *parent_tid;            /* parent accesses the new TID here. */
    int         flags;                  /* thread flags. */
    struct rtprio       *rtp;           /* Real-time scheduling priority */
    void        *spare[3];              /* TODO: cpu affinity mask etc. */
};

/* 
 * See pthread_*
 */
#ifndef _KERNEL
#include <sys/ucontext.h>

#ifndef _PID_T_DECLARED
typedef __pid_t         pid_t;
#define _PID_T_DECLARED
#endif

__BEGIN_DECLS
int thr_create(ucontext_t *ctx, long *id, int flags);
int thr_new(struct thr_param *param, int param_size);
int thr_self(long *id);
void thr_exit(long *state);
int thr_kill(long id, int sig);
int thr_kill2(pid_t pid, long id, int sig);
int thr_suspend(const struct timespec *timeout);
int thr_wake(long id);
int thr_set_name(long id, const char *name);
__END_DECLS
#endif /* !_KERNEL */

#endif /* ! _SYS_THR_H_ */