htab.c revision b122e50c3eabf157f8b7a3647590a37abd276c5c 
1/**************************************************************************
2 *
3 * Copyright 2010 Younes Manton.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <util/u_handle_table.h>
29#include <os/os_thread.h>
30#include "va_private.h"
31
32#ifdef VL_HANDLES
33static struct handle_table *htab = NULL;
34pipe_static_mutex(htab_lock);
35#endif
36
37boolean vlCreateHTAB(void)
38{
39#ifdef VL_HANDLES
40   boolean ret;
41   /* Make sure handle table handles match VDPAU handles. */
42   assert(sizeof(unsigned) <= sizeof(vlHandle));
43   pipe_mutex_lock(htab_lock);
44   if (!htab)
45      htab = handle_table_create();
46   ret = htab != NULL;
47   pipe_mutex_unlock(htab_lock);
48   return ret;
49#else
50   return TRUE;
51#endif
52}
53
54void vlDestroyHTAB(void)
55{
56#ifdef VL_HANDLES
57   pipe_mutex_lock(htab_lock);
58   if (htab) {
59      handle_table_destroy(htab);
60      htab = NULL;
61   }
62   pipe_mutex_unlock(htab_lock);
63#endif
64}
65
66vlHandle vlAddDataHTAB(void *data)
67{
68   assert(data);
69#ifdef VL_HANDLES
70   vlHandle handle = 0;
71   pipe_mutex_lock(htab_lock);
72   if (htab)
73      handle = handle_table_add(htab, data);
74   pipe_mutex_unlock(htab_lock);
75   return handle;
76#else
77   return (vlHandle)data;
78#endif
79}
80
81void* vlGetDataHTAB(vlHandle handle)
82{
83   assert(handle);
84#ifdef VL_HANDLES
85   void *data = NULL;
86   pipe_mutex_lock(htab_lock);
87   if (htab)
88      data = handle_table_get(htab, handle);
89   pipe_mutex_unlock(htab_lock);
90   return data;
91#else
92   return (void*)handle;
93#endif
94}
95