X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=glib%2Fgatomic.h;h=41df1dbd70e932b95e6ca029db6b96e8a4c9df7f;hb=03766a1a38407fbbbf8c30874e6f8d46e2b0da43;hp=ab8c2d982053645d9b0c1fd779ffc5f78306270b;hpb=3e847a090cfd8495add631d43388c461b1a85716;p=platform%2Fupstream%2Fglib.git diff --git a/glib/gatomic.h b/glib/gatomic.h index ab8c2d9..41df1db 100644 --- a/glib/gatomic.h +++ b/glib/gatomic.h @@ -1,62 +1,216 @@ -/* GLIB - Library of useful routines for C programming - * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald - * - * g_atomic_*: atomic operations. - * Copyright (C) 2003 Sebastian Wilhelmi +/* + * Copyright © 2011 Ryan Lortie * - * This 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. + * This 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 + * licence, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of + * This 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 this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -/* - * Modified by the GLib Team and others 1997-2000. See the AUTHORS - * file for a list of people on the GLib Team. See the ChangeLog - * files for a list of changes. These files are distributed with - * GLib at ftp://ftp.gtk.org/pub/gtk/. + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + * USA. + * + * Author: Ryan Lortie */ - + +#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) +#error "Only can be included directly." +#endif + #ifndef __G_ATOMIC_H__ #define __G_ATOMIC_H__ - + #include G_BEGIN_DECLS - -gint g_atomic_int_exchange_and_add (volatile gint *atomic, - gint val); -void g_atomic_int_add (volatile gint *atomic, - gint val); -gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic, - gint oldval, - gint newval); -gboolean g_atomic_pointer_compare_and_exchange (volatile gpointer *atomic, - gpointer oldval, - gpointer newval); - -gint g_atomic_int_get (volatile gint *atomic); -gpointer g_atomic_pointer_get (volatile gpointer *atomic); - -#ifndef G_ATOMIC_OP_MEMORY_BARRIER_NEEDED -# define g_atomic_int_get(atomic) (*(atomic)) -# define g_atomic_pointer_get(atomic) (*(atomic)) -#endif /* G_ATOMIC_OP_MEMORY_BARRIER_NEEDED */ - -#define g_atomic_int_inc(atomic) (g_atomic_int_add ((atomic), 1)) -#define g_atomic_int_dec_and_test(atomic) \ - (g_atomic_int_exchange_and_add ((atomic), -1) == 1) + +gint g_atomic_int_get (volatile gint *atomic); +void g_atomic_int_set (volatile gint *atomic, + gint newval); +void g_atomic_int_inc (volatile gint *atomic); +gboolean g_atomic_int_dec_and_test (volatile gint *atomic); +gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic, + gint oldval, + gint newval); +gint g_atomic_int_add (volatile gint *atomic, + gint val); +guint g_atomic_int_and (volatile guint *atomic, + guint val); +guint g_atomic_int_or (volatile guint *atomic, + guint val); +guint g_atomic_int_xor (volatile guint *atomic, + guint val); + +gpointer g_atomic_pointer_get (volatile void *atomic); +void g_atomic_pointer_set (volatile void *atomic, + gpointer newval); +gboolean g_atomic_pointer_compare_and_exchange (volatile void *atomic, + gpointer oldval, + gpointer newval); +gssize g_atomic_pointer_add (volatile void *atomic, + gssize val); +gsize g_atomic_pointer_and (volatile void *atomic, + gsize val); +gsize g_atomic_pointer_or (volatile void *atomic, + gsize val); +gsize g_atomic_pointer_xor (volatile void *atomic, + gsize val); + +GLIB_DEPRECATED_FOR(g_atomic_add) +gint g_atomic_int_exchange_and_add (volatile gint *atomic, + gint val); G_END_DECLS - + +#if defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) + +#define g_atomic_int_get(atomic) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ *(atomic) : 0); \ + __sync_synchronize (); \ + (gint) *(atomic); \ + })) +#define g_atomic_int_set(atomic, newval) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (newval) : 0); \ + *(atomic) = (newval); \ + __sync_synchronize (); \ + })) +#define g_atomic_int_inc(atomic) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ *(atomic) : 0); \ + (void) __sync_fetch_and_add ((atomic), 1); \ + })) +#define g_atomic_int_dec_and_test(atomic) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ *(atomic) : 0); \ + __sync_fetch_and_sub ((atomic), 1) == 1; \ + })) +#define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 0); \ + (gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \ + })) +#define g_atomic_int_add(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (val) : 0); \ + (gint) __sync_fetch_and_add ((atomic), (val)); \ + })) +#define g_atomic_int_and(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (val) : 0); \ + (guint) __sync_fetch_and_and ((atomic), (val)); \ + })) +#define g_atomic_int_or(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (val) : 0); \ + (guint) __sync_fetch_and_or ((atomic), (val)); \ + })) +#define g_atomic_int_xor(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \ + (void) (0 ? *(atomic) ^ (val) : 0); \ + (guint) __sync_fetch_and_xor ((atomic), (val)); \ + })) + +#define g_atomic_pointer_get(atomic) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + __sync_synchronize (); \ + (gpointer) *(atomic); \ + })) +#define g_atomic_pointer_set(atomic, newval) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + *(atomic) = (__typeof__ (*(atomic))) (gsize) (newval); \ + __sync_synchronize (); \ + })) +#define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + (gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \ + })) +#define g_atomic_pointer_add(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + (void) (0 ? (val) ^ (val) : 0); \ + (gssize) __sync_fetch_and_add ((atomic), (val)); \ + })) +#define g_atomic_pointer_and(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + (void) (0 ? (val) ^ (val) : 0); \ + (gsize) __sync_fetch_and_and ((atomic), (val)); \ + })) +#define g_atomic_pointer_or(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + (void) (0 ? (val) ^ (val) : 0); \ + (gsize) __sync_fetch_and_or ((atomic), (val)); \ + })) +#define g_atomic_pointer_xor(atomic, val) \ + (G_GNUC_EXTENSION ({ \ + G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \ + (void) (0 ? (gpointer) *(atomic) : 0); \ + (void) (0 ? (val) ^ (val) : 0); \ + (gsize) __sync_fetch_and_xor ((atomic), (val)); \ + })) + +#else /* defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) */ + +#define g_atomic_int_get(atomic) \ + (g_atomic_int_get ((gint *) (atomic))) +#define g_atomic_int_set(atomic, newval) \ + (g_atomic_int_set ((gint *) (atomic), (gint) (newval))) +#define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \ + (g_atomic_int_compare_and_exchange ((gint *) (atomic), (oldval), (newval))) +#define g_atomic_int_add(atomic, val) \ + (g_atomic_int_add ((gint *) (atomic), (val))) +#define g_atomic_int_and(atomic, val) \ + (g_atomic_int_and ((guint *) (atomic), (val))) +#define g_atomic_int_or(atomic, val) \ + (g_atomic_int_or ((guint *) (atomic), (val))) +#define g_atomic_int_xor(atomic, val) \ + (g_atomic_int_xor ((guint *) (atomic), (val))) +#define g_atomic_int_inc(atomic) \ + (g_atomic_int_inc ((gint *) (atomic))) +#define g_atomic_int_dec_and_test(atomic) \ + (g_atomic_int_dec_and_test ((gint *) (atomic))) + +#define g_atomic_pointer_get(atomic) \ + (g_atomic_pointer_get (atomic)) +#define g_atomic_pointer_set(atomic, newval) \ + (g_atomic_pointer_set ((atomic), (gpointer) (newval))) +#define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \ + (g_atomic_pointer_compare_and_exchange ((atomic), (gpointer) (oldval), (gpointer) (newval))) +#define g_atomic_pointer_add(atomic, val) \ + (g_atomic_pointer_add ((atomic), (gssize) (val))) +#define g_atomic_pointer_and(atomic, val) \ + (g_atomic_pointer_and ((atomic), (gsize) (val))) +#define g_atomic_pointer_or(atomic, val) \ + (g_atomic_pointer_or ((atomic), (gsize) (val))) +#define g_atomic_pointer_xor(atomic, val) \ + (g_atomic_pointer_xor ((atomic), (gsize) (val))) + +#endif /* defined(__GNUC__) && defined(G_ATOMIC_OP_USE_GCC_BUILTINS) */ + #endif /* __G_ATOMIC_H__ */