1 /*
2  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25
26 // -- This file was mechanically generated: Do not edit! -- //
27
28 package java.nio;
29
30 /**
31
32  * A read/write HeapByteBuffer.
33
34
35
36
37
38
39  */
40
41 class HeapByteBuffer
42     extends ByteBuffer
43 {
44     // Cached array base offset
45     private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(byte[].class);
46
47     // Cached array base offset
48     private static final long ARRAY_INDEX_SCALE = UNSAFE.arrayIndexScale(byte[].class);
49
50     // For speed these fields are actually declared in X-Buffer;
51     // these declarations are here as documentation
52     /*
53
54     protected final byte[] hb;
55     protected final int offset;
56
57     */
58
59     HeapByteBuffer(int cap, int lim) {            // package-private
60
61         super(-1, 0, lim, cap, new byte[cap], 0);
62         /*
63         hb = new byte[cap];
64         offset = 0;
65         */
66         this.address = ARRAY_BASE_OFFSET;
67
68
69
70
71     }
72
73     HeapByteBuffer(byte[] buf, int off, int len) { // package-private
74
75         super(-1, off, off + len, buf.length, buf, 0);
76         /*
77         hb = buf;
78         offset = 0;
79         */
80         this.address = ARRAY_BASE_OFFSET;
81
82
83
84
85     }
86
87     protected HeapByteBuffer(byte[] buf,
88                                    int mark, int pos, int lim, int cap,
89                                    int off)
90     {
91
92         super(mark, pos, lim, cap, buf, off);
93         /*
94         hb = buf;
95         offset = off;
96         */
97         this.address = ARRAY_BASE_OFFSET + off * ARRAY_INDEX_SCALE;
98
99
100
101
102     }
103
104     public ByteBuffer slice() {
105         return new HeapByteBuffer(hb,
106                                         -1,
107                                         0,
108                                         this.remaining(),
109                                         this.remaining(),
110                                         this.position() + offset);
111     }
112
113
114     ByteBuffer slice(int pos, int lim) {
115         assert (pos >= 0);
116         assert (pos <= lim);
117         int rem = lim - pos;
118         return new HeapByteBuffer(hb,
119                                         -1,
120                                         0,
121                                         rem,
122                                         rem,
123                                         pos + offset);
124     }
125
126
127     public ByteBuffer duplicate() {
128         return new HeapByteBuffer(hb,
129                                         this.markValue(),
130                                         this.position(),
131                                         this.limit(),
132                                         this.capacity(),
133                                         offset);
134     }
135
136     public ByteBuffer asReadOnlyBuffer() {
137
138         return new HeapByteBufferR(hb,
139                                      this.markValue(),
140                                      this.position(),
141                                      this.limit(),
142                                      this.capacity(),
143                                      offset);
144
145
146
147     }
148
149
150
151     protected int ix(int i) {
152         return i + offset;
153     }
154
155
156     private long byteOffset(long i) {
157         return address + i;
158     }
159
160
161     public byte get() {
162         return hb[ix(nextGetIndex())];
163     }
164
165     public byte get(int i) {
166         return hb[ix(checkIndex(i))];
167     }
168
169
170
171
172
173
174
175     public ByteBuffer get(byte[] dst, int offset, int length) {
176         checkBounds(offset, length, dst.length);
177         if (length > remaining())
178             throw new BufferUnderflowException();
179         System.arraycopy(hb, ix(position()), dst, offset, length);
180         position(position() + length);
181         return this;
182     }
183
184     public boolean isDirect() {
185         return false;
186     }
187
188
189
190     public boolean isReadOnly() {
191         return false;
192     }
193
194     public ByteBuffer put(byte x) {
195
196         hb[ix(nextPutIndex())] = x;
197         return this;
198
199
200
201     }
202
203     public ByteBuffer put(int i, byte x) {
204
205         hb[ix(checkIndex(i))] = x;
206         return this;
207
208
209
210     }
211
212     public ByteBuffer put(byte[] src, int offset, int length) {
213
214         checkBounds(offset, length, src.length);
215         if (length > remaining())
216             throw new BufferOverflowException();
217         System.arraycopy(src, offset, hb, ix(position()), length);
218         position(position() + length);
219         return this;
220
221
222
223     }
224
225     public ByteBuffer put(ByteBuffer src) {
226
227         if (src instanceof HeapByteBuffer) {
228             if (src == this)
229                 throw createSameBufferException();
230             HeapByteBuffer sb = (HeapByteBuffer)src;
231             int n = sb.remaining();
232             if (n > remaining())
233                 throw new BufferOverflowException();
234             System.arraycopy(sb.hb, sb.ix(sb.position()),
235                              hb, ix(position()), n);
236             sb.position(sb.position() + n);
237             position(position() + n);
238         } else if (src.isDirect()) {
239             int n = src.remaining();
240             if (n > remaining())
241                 throw new BufferOverflowException();
242             src.get(hb, ix(position()), n);
243             position(position() + n);
244         } else {
245             super.put(src);
246         }
247         return this;
248
249
250
251     }
252
253     public ByteBuffer compact() {
254
255         System.arraycopy(hb, ix(position()), hb, ix(0), remaining());
256         position(remaining());
257         limit(capacity());
258         discardMark();
259         return this;
260
261
262
263     }
264
265
266
267
268
269     byte _get(int i) {                          // package-private
270         return hb[i];
271     }
272
273     void _put(int i, byte b) {                  // package-private
274
275         hb[i] = b;
276
277
278
279     }
280
281     // char
282
283
284
285     public char getChar() {
286         return UNSAFE.getCharUnaligned(hb, byteOffset(nextGetIndex(2)), bigEndian);
287     }
288
289     public char getChar(int i) {
290         return UNSAFE.getCharUnaligned(hb, byteOffset(checkIndex(i, 2)), bigEndian);
291     }
292
293
294
295     public ByteBuffer putChar(char x) {
296
297         UNSAFE.putCharUnaligned(hb, byteOffset(nextPutIndex(2)), x, bigEndian);
298         return this;
299
300
301
302     }
303
304     public ByteBuffer putChar(int i, char x) {
305
306         UNSAFE.putCharUnaligned(hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
307         return this;
308
309
310
311     }
312
313     public CharBuffer asCharBuffer() {
314         int size = this.remaining() >> 1;
315         long addr = address + position();
316         return (bigEndian
317                 ? (CharBuffer)(new ByteBufferAsCharBufferB(this,
318                                                                -1,
319                                                                0,
320                                                                size,
321                                                                size,
322                                                                addr))
323                 : (CharBuffer)(new ByteBufferAsCharBufferL(this,
324                                                                -1,
325                                                                0,
326                                                                size,
327                                                                size,
328                                                                addr)));
329     }
330
331
332     // short
333
334
335
336     public short getShort() {
337         return UNSAFE.getShortUnaligned(hb, byteOffset(nextGetIndex(2)), bigEndian);
338     }
339
340     public short getShort(int i) {
341         return UNSAFE.getShortUnaligned(hb, byteOffset(checkIndex(i, 2)), bigEndian);
342     }
343
344
345
346     public ByteBuffer putShort(short x) {
347
348         UNSAFE.putShortUnaligned(hb, byteOffset(nextPutIndex(2)), x, bigEndian);
349         return this;
350
351
352
353     }
354
355     public ByteBuffer putShort(int i, short x) {
356
357         UNSAFE.putShortUnaligned(hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
358         return this;
359
360
361
362     }
363
364     public ShortBuffer asShortBuffer() {
365         int size = this.remaining() >> 1;
366         long addr = address + position();
367         return (bigEndian
368                 ? (ShortBuffer)(new ByteBufferAsShortBufferB(this,
369                                                                  -1,
370                                                                  0,
371                                                                  size,
372                                                                  size,
373                                                                  addr))
374                 : (ShortBuffer)(new ByteBufferAsShortBufferL(this,
375                                                                  -1,
376                                                                  0,
377                                                                  size,
378                                                                  size,
379                                                                  addr)));
380     }
381
382
383     // int
384
385
386
387     public int getInt() {
388         return UNSAFE.getIntUnaligned(hb, byteOffset(nextGetIndex(4)), bigEndian);
389     }
390
391     public int getInt(int i) {
392         return UNSAFE.getIntUnaligned(hb, byteOffset(checkIndex(i, 4)), bigEndian);
393     }
394
395
396
397     public ByteBuffer putInt(int x) {
398
399         UNSAFE.putIntUnaligned(hb, byteOffset(nextPutIndex(4)), x, bigEndian);
400         return this;
401
402
403
404     }
405
406     public ByteBuffer putInt(int i, int x) {
407
408         UNSAFE.putIntUnaligned(hb, byteOffset(checkIndex(i, 4)), x, bigEndian);
409         return this;
410
411
412
413     }
414
415     public IntBuffer asIntBuffer() {
416         int size = this.remaining() >> 2;
417         long addr = address + position();
418         return (bigEndian
419                 ? (IntBuffer)(new ByteBufferAsIntBufferB(this,
420                                                              -1,
421                                                              0,
422                                                              size,
423                                                              size,
424                                                              addr))
425                 : (IntBuffer)(new ByteBufferAsIntBufferL(this,
426                                                              -1,
427                                                              0,
428                                                              size,
429                                                              size,
430                                                              addr)));
431     }
432
433
434     // long
435
436
437
438     public long getLong() {
439         return UNSAFE.getLongUnaligned(hb, byteOffset(nextGetIndex(8)), bigEndian);
440     }
441
442     public long getLong(int i) {
443         return UNSAFE.getLongUnaligned(hb, byteOffset(checkIndex(i, 8)), bigEndian);
444     }
445
446
447
448     public ByteBuffer putLong(long x) {
449
450         UNSAFE.putLongUnaligned(hb, byteOffset(nextPutIndex(8)), x, bigEndian);
451         return this;
452
453
454
455     }
456
457     public ByteBuffer putLong(int i, long x) {
458
459         UNSAFE.putLongUnaligned(hb, byteOffset(checkIndex(i, 8)), x, bigEndian);
460         return this;
461
462
463
464     }
465
466     public LongBuffer asLongBuffer() {
467         int size = this.remaining() >> 3;
468         long addr = address + position();
469         return (bigEndian
470                 ? (LongBuffer)(new ByteBufferAsLongBufferB(this,
471                                                                -1,
472                                                                0,
473                                                                size,
474                                                                size,
475                                                                addr))
476                 : (LongBuffer)(new ByteBufferAsLongBufferL(this,
477                                                                -1,
478                                                                0,
479                                                                size,
480                                                                size,
481                                                                addr)));
482     }
483
484
485     // float
486
487
488
489     public float getFloat() {
490         int x = UNSAFE.getIntUnaligned(hb, byteOffset(nextGetIndex(4)), bigEndian);
491         return Float.intBitsToFloat(x);
492     }
493
494     public float getFloat(int i) {
495         int x = UNSAFE.getIntUnaligned(hb, byteOffset(checkIndex(i, 4)), bigEndian);
496         return Float.intBitsToFloat(x);
497     }
498
499
500
501     public ByteBuffer putFloat(float x) {
502
503         int y = Float.floatToRawIntBits(x);
504         UNSAFE.putIntUnaligned(hb, byteOffset(nextPutIndex(4)), y, bigEndian);
505         return this;
506
507
508
509     }
510
511     public ByteBuffer putFloat(int i, float x) {
512
513         int y = Float.floatToRawIntBits(x);
514         UNSAFE.putIntUnaligned(hb, byteOffset(checkIndex(i, 4)), y, bigEndian);
515         return this;
516
517
518
519     }
520
521     public FloatBuffer asFloatBuffer() {
522         int size = this.remaining() >> 2;
523         long addr = address + position();
524         return (bigEndian
525                 ? (FloatBuffer)(new ByteBufferAsFloatBufferB(this,
526                                                                  -1,
527                                                                  0,
528                                                                  size,
529                                                                  size,
530                                                                  addr))
531                 : (FloatBuffer)(new ByteBufferAsFloatBufferL(this,
532                                                                  -1,
533                                                                  0,
534                                                                  size,
535                                                                  size,
536                                                                  addr)));
537     }
538
539
540     // double
541
542
543
544     public double getDouble() {
545         long x = UNSAFE.getLongUnaligned(hb, byteOffset(nextGetIndex(8)), bigEndian);
546         return Double.longBitsToDouble(x);
547     }
548
549     public double getDouble(int i) {
550         long x = UNSAFE.getLongUnaligned(hb, byteOffset(checkIndex(i, 8)), bigEndian);
551         return Double.longBitsToDouble(x);
552     }
553
554
555
556     public ByteBuffer putDouble(double x) {
557
558         long y = Double.doubleToRawLongBits(x);
559         UNSAFE.putLongUnaligned(hb, byteOffset(nextPutIndex(8)), y, bigEndian);
560         return this;
561
562
563
564     }
565
566     public ByteBuffer putDouble(int i, double x) {
567
568         long y = Double.doubleToRawLongBits(x);
569         UNSAFE.putLongUnaligned(hb, byteOffset(checkIndex(i, 8)), y, bigEndian);
570         return this;
571
572
573
574     }
575
576     public DoubleBuffer asDoubleBuffer() {
577         int size = this.remaining() >> 3;
578         long addr = address + position();
579         return (bigEndian
580                 ? (DoubleBuffer)(new ByteBufferAsDoubleBufferB(this,
581                                                                    -1,
582                                                                    0,
583                                                                    size,
584                                                                    size,
585                                                                    addr))
586                 : (DoubleBuffer)(new ByteBufferAsDoubleBufferL(this,
587                                                                    -1,
588                                                                    0,
589                                                                    size,
590                                                                    size,
591                                                                    addr)));
592     }
593
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640 }
641