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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (c) 2010, Michael Bien
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Michael Bien nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 Michael Bien 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.
*/
/*
* Created on Saturday, March 27 2010 11:55
*/
package com.jogamp.gluegen.runtime;
import java.nio.ByteBuffer;
/**
* Hardware independent container for native pointer arrays.
*
* The native values (NIO direct ByteBuffer) might be 32bit or 64bit wide,
* depending of the CPU pointer width.
*
* @author Michael Bien
* @author Sven Gothel
*/
public abstract class PointerBuffer {
protected final ByteBuffer bb;
protected int capacity;
protected int position;
protected long[] backup;
protected PointerBuffer(ByteBuffer bb) {
this.bb = bb;
}
public static PointerBuffer allocate(int size) {
if (Platform.isJavaSE()) {
return new PointerBufferSE(ByteBuffer.wrap(new byte[elementSize() * size]));
} else {
return new PointerBufferME_CDC_FP(ByteBuffer.wrap(new byte[elementSize() * size]));
}
}
public static PointerBuffer allocateDirect(int size) {
if (Platform.isJavaSE()) {
return new PointerBufferSE(Buffers.newDirectByteBuffer(elementSize() * size));
} else {
return new PointerBufferME_CDC_FP(Buffers.newDirectByteBuffer(elementSize() * size));
}
}
public static PointerBuffer wrap(ByteBuffer src) {
PointerBuffer res;
if (Platform.isJavaSE()) {
res = new PointerBufferSE(src);
} else {
res = new PointerBufferME_CDC_FP(src);
}
res.updateBackup();
return res;
}
void updateBackup() {
for (int i = 0; i < capacity; i++) {
backup[i] = get(i);
}
}
int arrayOffset() {
return 0;
}
public static int elementSize() {
return Platform.is32Bit() ? Buffers.SIZEOF_INT : Buffers.SIZEOF_LONG;
}
public int limit() {
return capacity;
}
public int capacity() {
return capacity;
}
public int position() {
return position;
}
public PointerBuffer position(int newPos) {
if (0 > newPos || newPos >= capacity) {
throw new IndexOutOfBoundsException("Sorry to interrupt, but the position "+newPos+" was out of bounds. " +
"My capacity is "+capacity()+".");
}
position = newPos;
return this;
}
public int remaining() {
return capacity - position;
}
public boolean hasRemaining() {
return position < capacity;
}
public PointerBuffer rewind() {
position = 0;
return this;
}
boolean hasArray() {
return true;
}
public long[] array() {
return backup;
}
public ByteBuffer getBuffer() {
return bb;
}
public boolean isDirect() {
return bb.isDirect();
}
public long get() {
long r = get(position);
position++;
return r;
}
public abstract long get(int idx);
public abstract PointerBuffer put(int index, long value);
public abstract PointerBuffer put(long value);
}
|
