1 /* Creating and controlling threads (native Windows implementation).
2    Copyright (C) 2005-2020 Free Software Foundation, Inc.
3 
4    This program is free software; you can redistribute it and/or modify
5    it under the terms of the GNU General Public License as published by
6    the Free Software Foundation; either version 3, or (at your option)
7    any later version.
8 
9    This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU General Public License for more details.
13 
14    You should have received a copy of the GNU General Public License
15    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
16 
17 /* Written by Bruno Haible <bruno@clisp.org>, 2005.
18    Based on GCC's gthr-win32.h.  */
19 
20 #ifndef _WINDOWS_THREAD_H
21 #define _WINDOWS_THREAD_H
22 
23 #define WIN32_LEAN_AND_MEAN  /* avoid including junk */
24 #include <windows.h>
25 
26 /* The glwthread_thread_t is a pointer to a structure in memory.
27    Why not the thread handle?  If it were the thread handle, it would be hard
28    to implement glwthread_thread_self() (since GetCurrentThread () returns a
29    pseudo-handle, DuplicateHandle (GetCurrentThread ()) returns a handle that
30    must be closed afterwards, and there is no function for quickly retrieving
31    a thread handle from its id).
32    Why not the thread id?  I tried it.  It did not work: Sometimes ids appeared
33    that did not belong to running threads, and glthread_join failed with ESRCH.
34  */
35 typedef struct glwthread_thread_struct *glwthread_thread_t;
36 
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40 
41 /* attr is a bit mask, consisting of the following bits: */
42 #define GLWTHREAD_ATTR_DETACHED 1
43 extern int glwthread_thread_create (glwthread_thread_t *threadp,
44                                     unsigned int attr,
45                                     void * (*func) (void *), void *arg);
46 extern int glwthread_thread_join (glwthread_thread_t thread, void **retvalp);
47 extern int glwthread_thread_detach (glwthread_thread_t thread);
48 extern glwthread_thread_t glwthread_thread_self (void);
49 extern _Noreturn void glwthread_thread_exit (void *retval);
50 
51 #ifdef __cplusplus
52 }
53 #endif
54 
55 #endif /* _WINDOWS_THREAD_H */
56