7 * Mesa 3-D graphics library
9 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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25 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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40 * The hash table data structure.
42 struct _mesa_HashTable
{
43 struct hash_table
*ht
;
44 GLuint MaxKey
; /**< highest key inserted so far */
45 mtx_t Mutex
; /**< mutual exclusion lock */
46 GLboolean InDeleteAll
; /**< Debug check */
47 /** Value that would be in the table for DELETED_KEY_VALUE. */
48 void *deleted_key_data
;
51 extern struct _mesa_HashTable
*_mesa_NewHashTable(void);
53 extern void _mesa_DeleteHashTable(struct _mesa_HashTable
*table
);
55 extern void *_mesa_HashLookup(struct _mesa_HashTable
*table
, GLuint key
);
57 extern void _mesa_HashInsert(struct _mesa_HashTable
*table
, GLuint key
, void *data
);
59 extern void _mesa_HashRemove(struct _mesa_HashTable
*table
, GLuint key
);
62 * Lock the hash table mutex.
64 * This function should be used when multiple objects need
65 * to be looked up in the hash table, to avoid having to lock
66 * and unlock the mutex each time.
68 * \param table the hash table.
71 _mesa_HashLockMutex(struct _mesa_HashTable
*table
)
74 mtx_lock(&table
->Mutex
);
79 * Unlock the hash table mutex.
81 * \param table the hash table.
84 _mesa_HashUnlockMutex(struct _mesa_HashTable
*table
)
87 mtx_unlock(&table
->Mutex
);
90 extern void *_mesa_HashLookupLocked(struct _mesa_HashTable
*table
, GLuint key
);
92 extern void _mesa_HashInsertLocked(struct _mesa_HashTable
*table
,
93 GLuint key
, void *data
);
95 extern void _mesa_HashRemoveLocked(struct _mesa_HashTable
*table
, GLuint key
);
98 _mesa_HashDeleteAll(struct _mesa_HashTable
*table
,
99 void (*callback
)(GLuint key
, void *data
, void *userData
),
103 _mesa_HashWalk(const struct _mesa_HashTable
*table
,
104 void (*callback
)(GLuint key
, void *data
, void *userData
),
108 _mesa_HashWalkLocked(const struct _mesa_HashTable
*table
,
109 void (*callback
)(GLuint key
, void *data
, void *userData
),
112 extern void _mesa_HashPrint(const struct _mesa_HashTable
*table
);
114 extern GLuint
_mesa_HashFindFreeKeyBlock(struct _mesa_HashTable
*table
, GLuint numKeys
);
117 _mesa_HashNumEntries(const struct _mesa_HashTable
*table
);
119 extern void _mesa_test_hash_functions(void);