2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
26 * Chia-I Wu <olv@lunarg.com>
32 #include "u_current.h"
38 /* dynamic stubs will run out before this array */
39 static const struct mapi_stub
*mapi_stub_map
[MAPI_TABLE_NUM_SLOTS
];
40 static int mapi_num_stubs
;
42 static const struct mapi_stub
*
43 get_stub(const char *name
, const struct mapi_stub
*alias
)
45 const struct mapi_stub
*stub
;
47 stub
= stub_find_public(name
);
49 struct mapi_stub
*dyn
= stub_find_dynamic(name
, 1);
51 stub_fix_dynamic(dyn
, alias
);
60 * Initialize mapi. spec consists of NULL-separated strings. The first string
61 * denotes the version. It is followed by variable numbers of entries. Each
62 * entry can have multiple names. An empty name terminates an entry. An empty
63 * entry terminates the spec. A spec of two entries, Foo and Bar, is as
74 mapi_init(const char *spec
)
76 u_mutex_declare_static(mutex
);
82 /* already initialized */
84 u_mutex_unlock(mutex
);
91 /* parse version string */
94 u_mutex_unlock(mutex
);
100 const struct mapi_stub
*stub
;
102 stub
= get_stub(p
, NULL
);
103 /* out of dynamic entries */
113 mapi_stub_map
[count
++] = stub
;
117 mapi_num_stubs
= count
;
119 u_mutex_unlock(mutex
);
123 * Return the address of an entry. Optionally generate the entry if it does
127 mapi_get_proc_address(const char *name
)
129 const struct mapi_stub
*stub
;
131 stub
= stub_find_public(name
);
133 stub
= stub_find_dynamic(name
, 0);
135 return (stub
) ? (mapi_proc
) stub_get_addr(stub
) : NULL
;
139 * Create a dispatch table.
142 mapi_table_create(void)
144 const struct mapi_table
*noop
= table_get_noop();
145 struct mapi_table
*tbl
;
147 tbl
= malloc(MAPI_TABLE_SIZE
);
149 memcpy(tbl
, noop
, MAPI_TABLE_SIZE
);
155 * Destroy a dispatch table.
158 mapi_table_destroy(struct mapi_table
*tbl
)
164 * Fill a dispatch table. The order of the procs is determined when mapi_init
168 mapi_table_fill(struct mapi_table
*tbl
, const mapi_proc
*procs
)
170 const struct mapi_table
*noop
= table_get_noop();
173 for (i
= 0; i
< mapi_num_stubs
; i
++) {
174 const struct mapi_stub
*stub
= mapi_stub_map
[i
];
175 int slot
= stub_get_slot(stub
);
176 mapi_func func
= (mapi_func
) procs
[i
];
179 func
= table_get_func(noop
, slot
);
180 table_set_func(tbl
, slot
, func
);
185 * Make a dispatch table current.
188 mapi_table_make_current(const struct mapi_table
*tbl
)