| 1 | /* |
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| 2 | * Copyright © 2008 Ryan Lortie |
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| 3 | * Copyright © 2010 Codethink Limited |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU Lesser General Public |
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| 7 | * License as published by the Free Software Foundation; either |
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| 8 | * version 2.1 of the License, or (at your option) any later version. |
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| 9 | * |
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| 10 | * This library is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Lesser General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Lesser General Public |
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| 16 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
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| 17 | * |
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| 18 | * Author: Ryan Lortie <desrt@desrt.ca> |
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| 19 | */ |
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| 20 | |
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| 21 | #ifndef __G_BITLOCK_H__ |
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| 22 | #define __G_BITLOCK_H__ |
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| 23 | |
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| 24 | #include <glib/gtypes.h> |
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| 25 | |
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| 26 | #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
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| 27 | #error "Only <glib.h> can be included directly." |
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| 28 | #endif |
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| 29 | |
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| 30 | G_BEGIN_DECLS |
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| 31 | |
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| 32 | GLIB_AVAILABLE_IN_ALL |
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| 33 | void g_bit_lock (volatile gint *address, |
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| 34 | gint lock_bit); |
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| 35 | GLIB_AVAILABLE_IN_ALL |
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| 36 | gboolean g_bit_trylock (volatile gint *address, |
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| 37 | gint lock_bit); |
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| 38 | GLIB_AVAILABLE_IN_ALL |
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| 39 | void g_bit_unlock (volatile gint *address, |
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| 40 | gint lock_bit); |
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| 41 | |
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| 42 | GLIB_AVAILABLE_IN_ALL |
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| 43 | void g_pointer_bit_lock (volatile void *address, |
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| 44 | gint lock_bit); |
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| 45 | GLIB_AVAILABLE_IN_ALL |
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| 46 | gboolean g_pointer_bit_trylock (volatile void *address, |
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| 47 | gint lock_bit); |
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| 48 | GLIB_AVAILABLE_IN_ALL |
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| 49 | void g_pointer_bit_unlock (volatile void *address, |
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| 50 | gint lock_bit); |
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| 51 | |
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| 52 | #ifdef __GNUC__ |
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| 53 | |
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| 54 | #define g_pointer_bit_lock(address, lock_bit) \ |
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| 55 | (G_GNUC_EXTENSION ({ \ |
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| 56 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
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| 57 | g_pointer_bit_lock ((address), (lock_bit)); \ |
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| 58 | })) |
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| 59 | |
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| 60 | #define g_pointer_bit_trylock(address, lock_bit) \ |
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| 61 | (G_GNUC_EXTENSION ({ \ |
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| 62 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
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| 63 | g_pointer_bit_trylock ((address), (lock_bit)); \ |
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| 64 | })) |
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| 65 | |
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| 66 | #define g_pointer_bit_unlock(address, lock_bit) \ |
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| 67 | (G_GNUC_EXTENSION ({ \ |
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| 68 | G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer)); \ |
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| 69 | g_pointer_bit_unlock ((address), (lock_bit)); \ |
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| 70 | })) |
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| 71 | |
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| 72 | #endif |
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| 73 | |
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| 74 | G_END_DECLS |
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| 75 | |
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| 76 | #endif /* __G_BITLOCK_H_ */ |
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| 77 | |
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