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https://github.com/brl/mutter.git
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218 lines
12 KiB
C
218 lines
12 KiB
C
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/*
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* Copyright © 2011 Ryan Lortie
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*
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* This library is free software; you can redistribute it and/or modify
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* 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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* licence, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*
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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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#ifndef __G_ATOMIC_H__
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#define __G_ATOMIC_H__
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#include <glib/gtypes.h>
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G_BEGIN_DECLS
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gint g_atomic_int_get (volatile gint *atomic);
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void g_atomic_int_set (volatile gint *atomic,
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gint newval);
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void g_atomic_int_inc (volatile gint *atomic);
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gboolean g_atomic_int_dec_and_test (volatile gint *atomic);
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gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic,
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gint oldval,
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gint newval);
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gint g_atomic_int_add (volatile gint *atomic,
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gint val);
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guint g_atomic_int_and (volatile guint *atomic,
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guint val);
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guint g_atomic_int_or (volatile guint *atomic,
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guint val);
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guint g_atomic_int_xor (volatile guint *atomic,
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guint val);
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gpointer g_atomic_pointer_get (volatile void *atomic);
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void g_atomic_pointer_set (volatile void *atomic,
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gpointer newval);
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gboolean g_atomic_pointer_compare_and_exchange (volatile void *atomic,
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gpointer oldval,
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gpointer newval);
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gssize g_atomic_pointer_add (volatile void *atomic,
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gssize val);
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gsize g_atomic_pointer_and (volatile void *atomic,
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gsize val);
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gsize g_atomic_pointer_or (volatile void *atomic,
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gsize val);
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gsize g_atomic_pointer_xor (volatile void *atomic,
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gsize val);
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#ifndef G_DISABLE_DEPRECATED
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gint g_atomic_int_exchange_and_add (volatile gint *atomic,
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gint val);
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#endif
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G_END_DECLS
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#if defined(__GNUC__) && defined(G_ATOMIC_OP_USE_GCC_BUILTINS)
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#define g_atomic_int_get(atomic) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ *(atomic) : 0); \
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__sync_synchronize (); \
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(gint) *(atomic); \
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}))
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#define g_atomic_int_set(atomic, newval) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (newval) : 0); \
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*(atomic) = (newval); \
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__sync_synchronize (); \
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}))
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#define g_atomic_int_inc(atomic) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ *(atomic) : 0); \
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(void) __sync_fetch_and_add ((atomic), 1); \
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}))
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#define g_atomic_int_dec_and_test(atomic) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ *(atomic) : 0); \
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__sync_fetch_and_sub ((atomic), 1) == 1; \
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}))
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#define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 0); \
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(gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
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}))
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#define g_atomic_int_add(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (val) : 0); \
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(gint) __sync_fetch_and_add ((atomic), (val)); \
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}))
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#define g_atomic_int_and(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (val) : 0); \
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(guint) __sync_fetch_and_and ((atomic), (val)); \
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}))
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#define g_atomic_int_or(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (val) : 0); \
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(guint) __sync_fetch_and_or ((atomic), (val)); \
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}))
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#define g_atomic_int_xor(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
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(void) (0 ? *(atomic) ^ (val) : 0); \
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(guint) __sync_fetch_and_xor ((atomic), (val)); \
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}))
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#define g_atomic_pointer_get(atomic) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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__sync_synchronize (); \
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(gpointer) *(atomic); \
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}))
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#define g_atomic_pointer_set(atomic, newval) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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*(atomic) = (__typeof__ (*(atomic))) (gsize) (newval); \
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__sync_synchronize (); \
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}))
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#define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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(gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
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}))
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#define g_atomic_pointer_add(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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(void) (0 ? (val) ^ (val) : 0); \
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(gssize) __sync_fetch_and_add ((atomic), (val)); \
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}))
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#define g_atomic_pointer_and(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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(void) (0 ? (val) ^ (val) : 0); \
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(gsize) __sync_fetch_and_and ((atomic), (val)); \
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}))
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#define g_atomic_pointer_or(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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(void) (0 ? (val) ^ (val) : 0); \
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(gsize) __sync_fetch_and_or ((atomic), (val)); \
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}))
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#define g_atomic_pointer_xor(atomic, val) \
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(G_GNUC_EXTENSION ({ \
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G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
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(void) (0 ? (gpointer) *(atomic) : 0); \
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(void) (0 ? (val) ^ (val) : 0); \
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(gsize) __sync_fetch_and_xor ((atomic), (val)); \
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}))
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#else /* defined(__GNUC__) && defined(G_ATOMIC_OP_USE_GCC_BUILTINS) */
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#define g_atomic_int_get(atomic) \
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(g_atomic_int_get ((gint *) (atomic)))
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#define g_atomic_int_set(atomic, newval) \
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(g_atomic_int_set ((gint *) (atomic), (gint) (newval)))
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#define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
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(g_atomic_int_compare_and_exchange ((gint *) (atomic), (oldval), (newval)))
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#define g_atomic_int_add(atomic, val) \
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(g_atomic_int_add ((gint *) (atomic), (val)))
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#define g_atomic_int_and(atomic, val) \
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(g_atomic_int_and ((gint *) (atomic), (val)))
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#define g_atomic_int_or(atomic, val) \
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(g_atomic_int_or ((gint *) (atomic), (val)))
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#define g_atomic_int_xor(atomic, val) \
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(g_atomic_int_xor ((gint *) (atomic), (val)))
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#define g_atomic_int_inc(atomic) \
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(g_atomic_int_inc ((gint *) (atomic)))
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#define g_atomic_int_dec_and_test(atomic) \
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(g_atomic_int_dec_and_test ((gint *) (atomic)))
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#define g_atomic_pointer_get(atomic) \
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(g_atomic_pointer_get (atomic))
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#define g_atomic_pointer_set(atomic, newval) \
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(g_atomic_pointer_set ((atomic), (gpointer) (newval)))
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#define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
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(g_atomic_pointer_compare_and_exchange ((atomic), (gpointer) (oldval), (gpointer) (newval)))
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#define g_atomic_pointer_add(atomic, val) \
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(g_atomic_pointer_add ((atomic), (gssize) (val)))
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#define g_atomic_pointer_and(atomic, val) \
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(g_atomic_pointer_and ((atomic), (gsize) (val)))
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#define g_atomic_pointer_or(atomic, val) \
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(g_atomic_pointer_or ((atomic), (gsize) (val)))
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#define g_atomic_pointer_xor(atomic, val) \
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(g_atomic_pointer_xor ((atomic), (gsize) (val)))
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#endif /* defined(__GNUC__) && defined(G_ATOMIC_OP_USE_GCC_BUILTINS) */
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#endif /* __G_ATOMIC_H__ */
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