HarfBuzz text shaping engine
http://harfbuzz.github.io/
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54 lines
2.1 KiB
54 lines
2.1 KiB
/* |
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* Copyright © 2007 Chris Wilson |
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* |
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* This is part of HarfBuzz, an OpenType Layout engine library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Contributor(s): |
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* Chris Wilson <chris@chris-wilson.co.uk> |
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*/ |
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#ifndef HB_REFCOUNT_PRIVATE_H |
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#define HB_REFCOUNT_PRIVATE_H |
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typedef int hb_atomic_int_t; |
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/* Encapsulate operations on the object's reference count */ |
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typedef struct { |
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hb_atomic_int_t ref_count; |
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} hb_reference_count_t; |
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/* XXX add real atomic ops */ |
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#define _hb_reference_count_inc(RC) ((RC).ref_count++) |
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#define _hb_reference_count_dec_and_test(RC) ((RC).ref_count-- == 1) |
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#define HB_REFERENCE_COUNT_INIT(RC, VALUE) ((RC).ref_count = (VALUE)) |
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#define HB_REFERENCE_COUNT_GET_VALUE(RC) ((RC).ref_count+0) |
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#define HB_REFERENCE_COUNT_SET_VALUE(RC, VALUE) ((RC).ref_count = (VALUE), 0) |
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#define HB_REFERENCE_COUNT_INVALID_VALUE ((hb_atomic_int_t) -1) |
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#define HB_REFERENCE_COUNT_INVALID {HB_REFERENCE_COUNT_INVALID_VALUE} |
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#define HB_REFERENCE_COUNT_IS_INVALID(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) == HB_REFERENCE_COUNT_INVALID_VALUE) |
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#define HB_REFERENCE_COUNT_HAS_REFERENCE(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) > 0) |
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#endif /* HB_REFCOUNT_PRIVATE_H */
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