diff options
Diffstat (limited to 'src/glibext/objhole.h')
| -rw-r--r-- | src/glibext/objhole.h | 75 |
1 files changed, 62 insertions, 13 deletions
diff --git a/src/glibext/objhole.h b/src/glibext/objhole.h index cf9fc28..38f4bd5 100644 --- a/src/glibext/objhole.h +++ b/src/glibext/objhole.h @@ -25,6 +25,7 @@ #define _GLIBEXT_OBJHOLE_H +#include <glib.h> #include <glib-object.h> @@ -42,22 +43,33 @@ * GData *qdata; * }; * - * L'espace entre les deux derniers champs est exploité ici. + * En revanche, le fichier "glib/gobject/gobject.c" précise la définition + * réelle de la structure selon l'environnement : + * + * #if SIZEOF_INT == 4 && GLIB_SIZEOF_VOID_P == 8 + * #define HAVE_OPTIONAL_FLAGS + * #endif + * + * typedef struct + * { + * GTypeInstance g_type_instance; + * guint ref_count; + * #ifdef HAVE_OPTIONAL_FLAGS + * guint optional_flags; + * #endif + * GData *qdata; + * } GObjectReal; + * + * G_STATIC_ASSERT(sizeof(GObject) == sizeof(GObjectReal)); + * G_STATIC_ASSERT(G_STRUCT_OFFSET(GObject, ref_count) == G_STRUCT_OFFSET(GObjectReal, ref_count)); + * G_STATIC_ASSERT(G_STRUCT_OFFSET(GObject, qdata) == G_STRUCT_OFFSET(GObjectReal, qdata)); + * + * L'espace entre les deux derniers champs ne peut donc être pleinement exploité deux fois. */ +#if 0 -#define INIT_GOBJECT_EXTRA(obj) \ - do \ - { \ - guint *___space; \ - ___space = (((guint *)&obj->ref_count) + 1); \ - BUILD_BUG_ON((___space + 1) == (guint *)&obj->qdata); \ - *___space = 0; \ - } \ - while (0) - - -#define GET_GOBJECT_EXTRA(obj, tp) \ +# define GET_GOBJECT_EXTRA(obj, tp) \ ({ \ BUILD_BUG_ON(sizeof(tp) > sizeof(guint)); \ tp *___result; \ @@ -66,6 +78,7 @@ ___result; \ }) +#endif /** @@ -90,5 +103,41 @@ #endif +/* Verrou d'accès pour une encapsulation */ +typedef struct _lockable_obj_extra_t +{ + gint lock; /* Gestion d'accès aux fanions */ + +} lockable_obj_extra_t; + + +#define INIT_GOBJECT_EXTRA_LOCK(xtr) \ + do \ + { \ + lockable_obj_extra_t *__lockable; \ + __lockable = (lockable_obj_extra_t *)xtr; \ + __lockable->lock = 0; \ + } \ + while (0) + +#define LOCK_GOBJECT_EXTRA(xtr) \ + do \ + { \ + lockable_obj_extra_t *__lockable; \ + __lockable = (lockable_obj_extra_t *)xtr; \ + g_bit_lock(&__lockable->lock, HOLE_LOCK_BIT); \ + } \ + while (0) + +#define UNLOCK_GOBJECT_EXTRA(xtr) \ + do \ + { \ + lockable_obj_extra_t *__lockable; \ + __lockable = (lockable_obj_extra_t *)xtr; \ + g_bit_unlock(&__lockable->lock, HOLE_LOCK_BIT); \ + } \ + while (0) + + #endif /* _GLIBEXT_OBJHOLE_H */ |