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669b0f2d6b
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.
70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
/* GLIB - Library of useful routines for C programming
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*
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* gthreadprivate.h - GLib internal thread system related declarations.
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*
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* Copyright (C) 2003 Sebastian Wilhelmi
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*
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* The Gnome Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Gnome Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the Gnome Library; see the file COPYING.LIB. If not,
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* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __G_THREADPRIVATE_H__
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#define __G_THREADPRIVATE_H__
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G_BEGIN_DECLS
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/* System thread identifier comparision and assignment */
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#if GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P
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# define g_system_thread_equal_simple(thread1, thread2) \
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((thread1).dummy_pointer == (thread2).dummy_pointer)
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# define g_system_thread_assign(dest, src) \
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((dest).dummy_pointer = (src).dummy_pointer)
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#else /* GLIB_SIZEOF_SYSTEM_THREAD != SIZEOF_VOID_P */
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# define g_system_thread_equal_simple(thread1, thread2) \
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(memcmp (&(thread1), &(thread2), GLIB_SIZEOF_SYSTEM_THREAD) == 0)
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# define g_system_thread_assign(dest, src) \
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(memcpy (&(dest), &(src), GLIB_SIZEOF_SYSTEM_THREAD))
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#endif /* GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P */
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#define g_system_thread_equal(thread1, thread2) \
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(g_thread_functions_for_glib_use.thread_equal ? \
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g_thread_functions_for_glib_use.thread_equal (&(thread1), &(thread2)) :\
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g_system_thread_equal_simple((thread1), (thread2)))
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/* Is called from gthread/gthread-impl.c */
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void g_thread_init_glib (void);
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/* base initializers, may only use g_mutex_new(), g_cond_new() */
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G_GNUC_INTERNAL void _g_mem_thread_init_noprivate_nomessage (void);
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/* initializers that may also use g_private_new() */
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G_GNUC_INTERNAL void _g_slice_thread_init_nomessage (void);
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G_GNUC_INTERNAL void _g_messages_thread_init_nomessage (void);
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/* full fledged initializers */
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G_GNUC_INTERNAL void _g_convert_thread_init (void);
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G_GNUC_INTERNAL void _g_rand_thread_init (void);
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G_GNUC_INTERNAL void _g_main_thread_init (void);
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G_GNUC_INTERNAL void _g_atomic_thread_init (void);
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G_GNUC_INTERNAL void _g_utils_thread_init (void);
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G_GNUC_INTERNAL void _g_futex_thread_init (void);
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#ifdef G_OS_WIN32
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G_GNUC_INTERNAL void _g_win32_thread_init (void);
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#endif /* G_OS_WIN32 */
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G_END_DECLS
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#endif /* __G_THREADPRIVATE_H__ */
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