glib/glib/gthreadprivate.h
Ryan Lortie 669b0f2d6b Bug 548967 - 1 bit mutex lock
Add support for a mutex lock that consumes only one bit of storage
inside of an integer on systems that support futexes.  Futex is emulated
(at a higher cost) on systems that don't have it -- but only in the
contended case.
2010-01-28 12:40:46 -05:00

70 lines
2.8 KiB
C

/* GLIB - Library of useful routines for C programming
*
* gthreadprivate.h - GLib internal thread system related declarations.
*
* Copyright (C) 2003 Sebastian Wilhelmi
*
* The Gnome Library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* The Gnome Library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the Gnome Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __G_THREADPRIVATE_H__
#define __G_THREADPRIVATE_H__
G_BEGIN_DECLS
/* System thread identifier comparision and assignment */
#if GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P
# define g_system_thread_equal_simple(thread1, thread2) \
((thread1).dummy_pointer == (thread2).dummy_pointer)
# define g_system_thread_assign(dest, src) \
((dest).dummy_pointer = (src).dummy_pointer)
#else /* GLIB_SIZEOF_SYSTEM_THREAD != SIZEOF_VOID_P */
# define g_system_thread_equal_simple(thread1, thread2) \
(memcmp (&(thread1), &(thread2), GLIB_SIZEOF_SYSTEM_THREAD) == 0)
# define g_system_thread_assign(dest, src) \
(memcpy (&(dest), &(src), GLIB_SIZEOF_SYSTEM_THREAD))
#endif /* GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P */
#define g_system_thread_equal(thread1, thread2) \
(g_thread_functions_for_glib_use.thread_equal ? \
g_thread_functions_for_glib_use.thread_equal (&(thread1), &(thread2)) :\
g_system_thread_equal_simple((thread1), (thread2)))
/* Is called from gthread/gthread-impl.c */
void g_thread_init_glib (void);
/* base initializers, may only use g_mutex_new(), g_cond_new() */
G_GNUC_INTERNAL void _g_mem_thread_init_noprivate_nomessage (void);
/* initializers that may also use g_private_new() */
G_GNUC_INTERNAL void _g_slice_thread_init_nomessage (void);
G_GNUC_INTERNAL void _g_messages_thread_init_nomessage (void);
/* full fledged initializers */
G_GNUC_INTERNAL void _g_convert_thread_init (void);
G_GNUC_INTERNAL void _g_rand_thread_init (void);
G_GNUC_INTERNAL void _g_main_thread_init (void);
G_GNUC_INTERNAL void _g_atomic_thread_init (void);
G_GNUC_INTERNAL void _g_utils_thread_init (void);
G_GNUC_INTERNAL void _g_futex_thread_init (void);
#ifdef G_OS_WIN32
G_GNUC_INTERNAL void _g_win32_thread_init (void);
#endif /* G_OS_WIN32 */
G_END_DECLS
#endif /* __G_THREADPRIVATE_H__ */