142 lines
3.5 KiB
C++
142 lines
3.5 KiB
C++
/*
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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 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 <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 struct { volatile int m; } hb_mutex_t;
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#define HB_MUTEX_INIT 0
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#define hb_mutex_init(M) ((void) ((M)->m = 0))
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#define hb_mutex_lock(M) ((void) ((M)->m = 1))
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#define hb_mutex_trylock(M) ((M)->m = 1, 1)
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#define hb_mutex_unlock(M) ((void) ((M)->m = 0))
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#define hb_mutex_free(M) ((void) ((M)-M = 2))
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#endif
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struct hb_static_mutex_t : hb_mutex_t
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{
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hb_static_mutex_t (void) {
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hb_mutex_init (this);
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}
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inline void lock (void) { hb_mutex_lock (this); }
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inline void unlock (void) { hb_mutex_unlock (this); }
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};
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HB_END_DECLS
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template <typename item_t>
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struct hb_static_threadsafe_set_t
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{
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hb_lockable_set_t <item_t, hb_static_mutex_t> set;
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hb_static_mutex_t lock;
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template <typename T>
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inline item_t *replace_or_insert (T v)
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{
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return set.replace_or_insert (v, lock);
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}
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template <typename T>
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inline void remove (T v)
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{
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set.remove (v, lock);
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}
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template <typename T>
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inline bool find (T v, item_t *i)
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{
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return set.find (v, i, lock);
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}
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template <typename T>
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inline item_t *find_or_insert (T v)
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{
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return set.find_or_insert (v, lock);
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}
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void finish (void)
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{
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set.finish (lock);
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}
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};
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HB_BEGIN_DECLS
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HB_END_DECLS
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#endif /* HB_MUTEX_PRIVATE_HH */
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