1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/**
* Copyright 2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.openal;
import com.jogamp.common.util.HashUtil;
/**
* Implementing {@link #equals(Object)} based on the native address
* and {@link #hashCode()} on the {@link HashUtil#getAddrHash32_EqualDist(long)} with same native address.
* <p>
* Both, the native address and its hash code values are cached.
* </p>
*/
public class ALContextKey {
static final ALC alc = ALFactory.getALC();
private final ALCcontext alCtx;
private final long nativeAddress;
private final int hashCodeValue;
/** Creates an instance using the current context as key. */
public ALContextKey( final ALCcontext context ) {
if( null == context ) {
throw new IllegalArgumentException("null context");
}
// alCtx = alc.alcGetCurrentContext();
alCtx = context;
if( null != alCtx ) {
nativeAddress = alCtx.getDirectBufferAddress();
hashCodeValue = HashUtil.getAddrHash32_EqualDist(nativeAddress);
} else {
nativeAddress = 0;
hashCodeValue = 0;
}
}
public ALCcontext getContext() { return alCtx; }
@Override
public boolean equals(final Object o) {
if( this == o ) {
return true;
}
if( !(o instanceof ALContextKey) ) {
return false;
}
final ALContextKey o2 = (ALContextKey)o;
return nativeAddress == o2.nativeAddress;
}
@Override
public int hashCode() {
return hashCodeValue;
}
@Override
public String toString() {
return "ALContextKey[alCtx hash 0x"+Integer.toHexString(System.identityHashCode(alCtx))+
", native[ptr 0x"+Long.toHexString(nativeAddress)+", hash 0x"+Integer.toHexString(hashCodeValue)+"]]";
}
}
|
