/* Creating and controlling threads (native Windows implementation).

   Copyright (C) 2005-2020 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3, or (at your option)

   any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see <https://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2005.

   Based on GCC's gthr-win32.h.  */

#ifndef _WINDOWS_THREAD_H

#define _WINDOWS_THREAD_H

#define WIN32_LEAN_AND_MEAN  /* avoid including junk */

#include <windows.h>

/* The glwthread_thread_t is a pointer to a structure in memory.

   Why not the thread handle?  If it were the thread handle, it would be hard

   to implement glwthread_thread_self() (since GetCurrentThread () returns a

   pseudo-handle, DuplicateHandle (GetCurrentThread ()) returns a handle that

   must be closed afterwards, and there is no function for quickly retrieving

   a thread handle from its id).

   Why not the thread id?  I tried it.  It did not work: Sometimes ids appeared

   that did not belong to running threads, and glthread_join failed with ESRCH.

 */

typedef struct glwthread_thread_struct *glwthread_thread_t;

#ifdef __cplusplus

extern "C" {

#endif

/* attr is a bit mask, consisting of the following bits: */

#define GLWTHREAD_ATTR_DETACHED 1

extern int glwthread_thread_create (glwthread_thread_t *threadp,

                                    unsigned int attr,

                                    void * (*func) (void *), void *arg);

extern int glwthread_thread_join (glwthread_thread_t thread, void **retvalp);

extern int glwthread_thread_detach (glwthread_thread_t thread);

extern glwthread_thread_t glwthread_thread_self (void);

extern int glwthread_thread_exit (void *retval);

#ifdef __cplusplus

}

#endif

#endif /* _WINDOWS_THREAD_H */