2 * Copyright © 2007 Chris Wilson
3 * Copyright © 2009,2010 Red Hat, Inc.
4 * Copyright © 2011 Google, Inc.
6 * This is part of HarfBuzz, a text shaping library.
8 * Permission is hereby granted, without written agreement and without
9 * license or royalty fees, to use, copy, modify, and distribute this
10 * software and its documentation for any purpose, provided that the
11 * above copyright notice and the following two paragraphs appear in
12 * all copies of this software.
14 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
15 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
17 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
20 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
21 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
22 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
24 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
27 * Chris Wilson <chris@chris-wilson.co.uk>
28 * Red Hat Author(s): Behdad Esfahbod
29 * Google Author(s): Behdad Esfahbod
32 #ifndef HB_MUTEX_PRIVATE_HH
33 #define HB_MUTEX_PRIVATE_HH
35 #include "hb-private.hh"
42 /* We need external help for these */
48 typedef GStaticMutex hb_mutex_t;
49 #define HB_MUTEX_INIT G_STATIC_MUTEX_INIT
50 #define hb_mutex_init(M) g_static_mutex_init (M)
51 #define hb_mutex_lock(M) g_static_mutex_lock (M)
52 #define hb_mutex_trylock(M) g_static_mutex_trylock (M)
53 #define hb_mutex_unlock(M) g_static_mutex_unlock (M)
54 #define hb_mutex_free(M) g_static_mutex_free (M)
57 #elif defined(_MSC_VER)
61 typedef CRITICAL_SECTION hb_mutex_t;
62 #define HB_MUTEX_INIT { NULL, 0, 0, NULL, NULL, 0 }
63 #define hb_mutex_init(M) InitializeCriticalSection (M)
64 #define hb_mutex_lock(M) EnterCriticalSection (M)
65 #define hb_mutex_trylock(M) TryEnterCriticalSection (M)
66 #define hb_mutex_unlock(M) LeaveCriticalSection (M)
67 #define hb_mutex_free(M) DeleteCriticalSection (M)
72 #warning "Could not find any system to define platform macros, library will NOT be thread-safe"
74 typedef struct { volatile int m; } hb_mutex_t;
75 #define HB_MUTEX_INIT 0
76 #define hb_mutex_init(M) ((void) ((M)->m = 0))
77 #define hb_mutex_lock(M) ((void) ((M)->m = 1))
78 #define hb_mutex_trylock(M) ((M)->m = 1, 1)
79 #define hb_mutex_unlock(M) ((void) ((M)->m = 0))
80 #define hb_mutex_free(M) ((void) ((M)-M = 2))
86 struct hb_static_mutex_t : hb_mutex_t
88 hb_static_mutex_t (void) {
92 inline void lock (void) { hb_mutex_lock (this); }
93 inline void unlock (void) { hb_mutex_unlock (this); }
100 template <typename item_t>
101 struct hb_static_threadsafe_set_t
103 hb_lockable_set_t <item_t, hb_static_mutex_t> set;
104 hb_static_mutex_t lock;
106 template <typename T>
107 inline item_t *replace_or_insert (T v)
109 return set.replace_or_insert (v, lock);
112 template <typename T>
113 inline void remove (T v)
115 set.remove (v, lock);
118 template <typename T>
119 inline bool find (T v, item_t *i)
121 return set.find (v, i, lock);
124 template <typename T>
125 inline item_t *find_or_insert (T v)
127 return set.find_or_insert (v, lock);
141 #endif /* HB_MUTEX_PRIVATE_HH */