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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*
* Copyright 2009 - 2010 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.opencl;
import com.jogamp.common.nio.PointerBuffer;
import com.jogamp.common.os.Platform;
import com.jogamp.opencl.util.CLUtil;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import static com.jogamp.common.nio.Buffers.*;
import static com.jogamp.opencl.CLException.*;
/**
* Internal utility for common OpenCL clGetFooInfo calls.
* Threadsafe.
* @author Michael Bien
*/
abstract class CLInfoAccessor {
private static final int BB_SIZE = 512;
protected final static ThreadLocal<ByteBuffer> localBB = new ThreadLocal<ByteBuffer>() {
@Override
protected ByteBuffer initialValue() {
return newDirectByteBuffer(BB_SIZE);
}
};
protected final static ThreadLocal<PointerBuffer> localNSB = new ThreadLocal<PointerBuffer>() {
@Override
protected PointerBuffer initialValue() {
return PointerBuffer.allocateDirect(1);
}
};
public final long getLong(int key) {
ByteBuffer buffer = getBB(8).putLong(0, 0);
int ret = getInfo(key, 8, buffer, null);
checkForError(ret, "error while asking for info value");
return buffer.getLong(0);
}
public final String getString(int key) {
PointerBuffer sizeBuffer = getNSB();
int ret = getInfo(key, 0, null, sizeBuffer);
checkForError(ret, "error while asking for info string");
int clSize = (int)sizeBuffer.get(0);
ByteBuffer buffer = getBB(clSize);
ret = getInfo(key, buffer.capacity(), buffer, null);
checkForError(ret, "error while asking for info string");
byte[] array = new byte[clSize];
buffer.get(array).rewind();
return CLUtil.clString2JavaString(array, clSize);
}
public final int[] getInts(int key, int n) {
ByteBuffer buffer = getBB(n * (Platform.is32Bit()?4:8));
int ret = getInfo(key, buffer.capacity(), buffer, null);
checkForError(ret, "error while asking for info value");
int[] array = new int[n];
for(int i = 0; i < array.length; i++) {
if(Platform.is32Bit()) {
array[i] = buffer.getInt();
}else{
array[i] = (int)buffer.getLong();
}
}
buffer.rewind();
return array;
}
protected ByteBuffer getBB(int minCapacity) {
if(minCapacity > BB_SIZE) {
return newDirectByteBuffer(minCapacity);
}else{
return localBB.get();
}
}
protected PointerBuffer getNSB() {
return localNSB.get();
}
protected abstract int getInfo(int name, long valueSize, Buffer value, PointerBuffer valueSizeRet);
}
|
