HarfBuzz text shaping engine
http://harfbuzz.github.io/
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106 lines
3.3 KiB
106 lines
3.3 KiB
14 years ago
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/*
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* Copyright © 2007 Chris Wilson
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* Copyright © 2009,2010 Red Hat, Inc.
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* Copyright © 2011 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping 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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* Red Hat Author(s): Behdad Esfahbod
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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_MUTEX_PRIVATE_HH
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#define HB_MUTEX_PRIVATE_HH
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#include "hb-private.hh"
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HB_BEGIN_DECLS
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/* mutex */
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/* We need external help for these */
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#ifdef HAVE_GLIB
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#include <glib.h>
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typedef volatile int hb_atomic_int_t;
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#define hb_atomic_int_fetch_and_add(AI, V) g_atomic_int_exchange_and_add (&(AI), V)
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#define hb_atomic_int_get(AI) g_atomic_int_get (&(AI))
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#define hb_atomic_int_set(AI, V) g_atomic_int_set (&(AI), V)
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typedef GStaticMutex hb_mutex_t;
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#define HB_MUTEX_INIT G_STATIC_MUTEX_INIT
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#define hb_mutex_init(M) g_static_mutex_init (&(M))
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#define hb_mutex_lock(M) g_static_mutex_lock (&(M))
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#define hb_mutex_trylock(M) g_static_mutex_trylock (&(M))
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#define hb_mutex_unlock(M) g_static_mutex_unlock (&(M))
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#define hb_mutex_free(M) g_static_mutex_free (&(M))
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#elif defined(_MSC_VER)
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#include <intrin.h>
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typedef long hb_atomic_int_t;
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#define hb_atomic_int_fetch_and_add(AI, V) _InterlockedExchangeAdd (&(AI), V)
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#define hb_atomic_int_get(AI) (_ReadBarrier (), (AI))
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#define hb_atomic_int_set(AI, V) ((void) _InterlockedExchange (&(AI), (V)))
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#include <Windows.h>
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typedef CRITICAL_SECTION hb_mutex_t;
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#define HB_MUTEX_INIT { NULL, 0, 0, NULL, NULL, 0 }
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#define hb_mutex_init(M) InitializeCriticalSection (&(M))
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#define hb_mutex_lock(M) EnterCriticalSection (&(M))
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#define hb_mutex_trylock(M) TryEnterCriticalSection (&(M))
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#define hb_mutex_unlock(M) LeaveCriticalSection (&(M))
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#define hb_mutex_free(M) DeleteCriticalSection (&(M))
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#else
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#warning "Could not find any system to define platform macros, library will NOT be thread-safe"
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typedef volatile int hb_atomic_int_t;
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#define hb_atomic_int_fetch_and_add(AI, V) ((AI) += (V), (AI) - (V))
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#define hb_atomic_int_get(AI) (AI)
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#define hb_atomic_int_set(AI, V) ((void) ((AI) = (V)))
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typedef volatile int hb_mutex_t;
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#define HB_MUTEX_INIT 0
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#define hb_mutex_init(M) ((void) ((M) = 0))
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#define hb_mutex_lock(M) ((void) ((M) = 1))
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#define hb_mutex_trylock(M) ((M) = 1, 1)
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#define hb_mutex_unlock(M) ((void) ((M) = 0))
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#define hb_mutex_free(M) ((void) ((M) = 2))
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#endif
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HB_END_DECLS
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#endif /* HB_MUTEX_PRIVATE_HH */
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