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Diffstat (limited to 'pango/opentype/hb-object-private.h')
-rw-r--r-- | pango/opentype/hb-object-private.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/pango/opentype/hb-object-private.h b/pango/opentype/hb-object-private.h deleted file mode 100644 index 2186e58e..00000000 --- a/pango/opentype/hb-object-private.h +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright (C) 2007 Chris Wilson - * Copyright (C) 2009 Red Hat, Inc. - * - * This is part of HarfBuzz, an OpenType Layout engine library. - * - * Permission is hereby granted, without written agreement and without - * license or royalty fees, to use, copy, modify, and distribute this - * software and its documentation for any purpose, provided that the - * above copyright notice and the following two paragraphs appear in - * all copies of this software. - * - * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN - * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - * - * Contributor(s): - * Chris Wilson <chris@chris-wilson.co.uk> - * Red Hat Author(s): Behdad Esfahbod - */ - -#ifndef HB_REFCOUNT_PRIVATE_H -#define HB_REFCOUNT_PRIVATE_H - - -/* Encapsulate operations on the object's reference count */ -typedef struct { - hb_atomic_int_t ref_count; -} hb_reference_count_t; - -#define hb_reference_count_inc(RC) hb_atomic_int_fetch_and_add ((RC).ref_count, 1) -#define hb_reference_count_dec(RC) hb_atomic_int_fetch_and_add ((RC).ref_count, -1) - -#define HB_REFERENCE_COUNT_INIT(RC, VALUE) ((RC).ref_count = (VALUE)) - -#define HB_REFERENCE_COUNT_GET_VALUE(RC) hb_atomic_int_get ((RC).ref_count) -#define HB_REFERENCE_COUNT_SET_VALUE(RC, VALUE) hb_atomic_int_set ((RC).ref_count, (VALUE)) - -#define HB_REFERENCE_COUNT_INVALID_VALUE ((hb_atomic_int_t) -1) -#define HB_REFERENCE_COUNT_INVALID {HB_REFERENCE_COUNT_INVALID_VALUE} - -#define HB_REFERENCE_COUNT_IS_INVALID(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) == HB_REFERENCE_COUNT_INVALID_VALUE) - -#define HB_REFERENCE_COUNT_HAS_REFERENCE(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) > 0) - - - -/* Helper macros */ - -#define HB_OBJECT_IS_INERT(obj) \ - (HB_UNLIKELY (HB_REFERENCE_COUNT_IS_INVALID ((obj)->ref_count))) - -#define HB_OBJECT_DO_INIT_EXPR(obj) \ - HB_REFERENCE_COUNT_INIT (obj->ref_count, 1) - -#define HB_OBJECT_DO_INIT(obj) \ - HB_STMT_START { \ - HB_OBJECT_DO_INIT_EXPR (obj); \ - } HB_STMT_END - -#define HB_OBJECT_DO_CREATE(Type, obj) \ - HB_LIKELY (( \ - (obj) = (Type *) calloc (1, sizeof (Type)), \ - HB_OBJECT_DO_INIT_EXPR (obj), \ - (obj) \ - )) - -#define HB_OBJECT_DO_REFERENCE(obj) \ - HB_STMT_START { \ - int old_count; \ - if (HB_UNLIKELY (!(obj) || HB_OBJECT_IS_INERT (obj))) \ - return obj; \ - old_count = hb_reference_count_inc (obj->ref_count); \ - assert (old_count > 0); \ - return obj; \ - } HB_STMT_END - -#define HB_OBJECT_DO_GET_REFERENCE_COUNT(obj) \ - HB_STMT_START { \ - if (HB_UNLIKELY (!(obj) || HB_OBJECT_IS_INERT (obj))) \ - return 0; \ - return HB_REFERENCE_COUNT_GET_VALUE (obj->ref_count); \ - } HB_STMT_END - -#define HB_OBJECT_DO_DESTROY(obj) \ - HB_STMT_START { \ - int old_count; \ - if (HB_UNLIKELY (!(obj) || HB_OBJECT_IS_INERT (obj))) \ - return; \ - old_count = hb_reference_count_dec (obj->ref_count); \ - assert (old_count > 0); \ - if (old_count != 1) \ - return; \ - } HB_STMT_END - - -#endif /* HB_REFCOUNT_PRIVATE_H */ |