Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/adlc/filebuff.hpp
src/share/vm/adlc/filebuff.hpp
- changeset 9816
- acd345f4f9e5
- parent 4161
- d336b3173277
- child 9852
- 70aa912cebe5
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| 9815:127e100fb80e | 9816:acd345f4f9e5 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 44 | 44 |
| 45 //------------------------------FileBuff-------------------------------------- | 45 //------------------------------FileBuff-------------------------------------- |
| 46 // This class defines a nicely behaved buffer of text. Entire file of text | 46 // This class defines a nicely behaved buffer of text. Entire file of text |
| 47 // is read into buffer at creation, with sentinels at start and end. | 47 // is read into buffer at creation, with sentinels at start and end. |
| 48 class FileBuff { | 48 class FileBuff { |
| 49 friend class FileBuffRegion; | |
| 50 private: | 49 private: |
| 51 long _bufferSize; // Size of text holding buffer. | 50 long _bufferSize; // Size of text holding buffer. |
| 52 long _offset; // Expected filepointer offset. | 51 long _offset; // Expected filepointer offset. |
| 53 long _bufoff; // Start of buffer file offset | 52 long _bufoff; // Start of buffer file offset |
| 54 | 53 |
| 80 | 79 |
| 81 // This converts a pointer into the buffer to a file offset. It only works | 80 // This converts a pointer into the buffer to a file offset. It only works |
| 82 // when the pointer is valid (i.e. just obtained from getline()). | 81 // when the pointer is valid (i.e. just obtained from getline()). |
| 83 long getoff(const char* s) { return _bufoff + (long)(s - _buf); } | 82 long getoff(const char* s) { return _bufoff + (long)(s - _buf); } |
| 84 }; | 83 }; |
| 85 | |
| 86 //------------------------------FileBuffRegion--------------------------------- | |
| 87 // A buffer region is really a region of some file, specified as a linked list | |
| 88 // of offsets and lengths. These regions can be merged; overlapping regions | |
| 89 // will coalesce. | |
| 90 class FileBuffRegion { | |
| 91 public: // Workaround dev-studio friend/private bug | |
| 92 FileBuffRegion *_next; // Linked list of regions sorted by offset. | |
| 93 private: | |
| 94 FileBuff *_bfr; // The Buffer of the file | |
| 95 int _offset, _length; // The file area | |
| 96 int _sol; // Start of line where the file area starts | |
| 97 int _line; // First line of region | |
| 98 | |
| 99 public: | |
| 100 FileBuffRegion(FileBuff*, int sol, int line, int offset, int len); | |
| 101 ~FileBuffRegion(); | |
| 102 | |
| 103 FileBuffRegion *copy(); // Deep copy | |
| 104 FileBuffRegion *merge(FileBuffRegion*); // Merge 2 regions; delete input | |
| 105 | |
| 106 void print(ostream&); | |
| 107 friend ostream& operator<< (ostream&, FileBuffRegion&); | |
| 108 }; | |
| 109 | |
| 110 #endif // SHARE_VM_ADLC_FILEBUFF_HPP | 84 #endif // SHARE_VM_ADLC_FILEBUFF_HPP |
