Mercurial > hg > truffle
annotate src/share/vm/adlc/filebuff.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 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. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // FILEBUFF.HPP - Definitions for parser file buffering routines | |
229 | 26 #include <iostream> |
0 | 27 |
229 | 28 using namespace std; |
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6778669: Patch from Red Hat -- fixes compilation errors
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29 |
0 | 30 // STRUCTURE FOR HANDLING INPUT AND OUTPUT FILES |
31 typedef struct { | |
32 const char *_name; | |
33 FILE *_fp; | |
34 } BufferedFile; | |
35 | |
36 class ArchDesc; | |
37 | |
38 //------------------------------FileBuff-------------------------------------- | |
39 // This class defines a nicely behaved buffer of text. Entire file of text | |
605 | 40 // is read into buffer at creation, with sentinels at start and end. |
0 | 41 class FileBuff { |
42 friend class FileBuffRegion; | |
43 private: | |
44 long _bufferSize; // Size of text holding buffer. | |
45 long _offset; // Expected filepointer offset. | |
46 long _bufoff; // Start of buffer file offset | |
47 | |
48 char *_buf; // The buffer itself. | |
605 | 49 char *_bigbuf; // The buffer plus sentinels; actual heap area |
50 char *_bufmax; // A pointer to the buffer end sentinel | |
0 | 51 char *_bufeol; // A pointer to the last complete line end |
52 | |
53 int _err; // Error flag for file seek/read operations | |
54 long _filepos; // Current offset from start of file | |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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55 int _linenum; |
0 | 56 |
57 ArchDesc& _AD; // Reference to Architecture Description | |
58 | |
59 // Error reporting function | |
60 void file_error(int flag, int linenum, const char *fmt, ...); | |
61 | |
62 public: | |
63 const BufferedFile *_fp; // File to be buffered | |
64 | |
65 FileBuff(BufferedFile *fp, ArchDesc& archDesc); // Constructor | |
66 ~FileBuff(); // Destructor | |
67 | |
68 // This returns a pointer to the start of the current line in the buffer, | |
69 // and increments bufeol and filepos to point at the end of that line. | |
70 char *get_line(void); | |
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71 int linenum() const { return _linenum; } |
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6771309: debugging AD files is difficult without #line directives in generated code
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72 void set_linenum(int line) { _linenum = line; } |
0 | 73 |
74 // This converts a pointer into the buffer to a file offset. It only works | |
75 // when the pointer is valid (i.e. just obtained from getline()). | |
769 | 76 long getoff(const char* s) { return _bufoff + (long)(s - _buf); } |
0 | 77 }; |
78 | |
79 //------------------------------FileBuffRegion--------------------------------- | |
80 // A buffer region is really a region of some file, specified as a linked list | |
81 // of offsets and lengths. These regions can be merged; overlapping regions | |
82 // will coalesce. | |
83 class FileBuffRegion { | |
84 public: // Workaround dev-studio friend/private bug | |
85 FileBuffRegion *_next; // Linked list of regions sorted by offset. | |
86 private: | |
87 FileBuff *_bfr; // The Buffer of the file | |
88 int _offset, _length; // The file area | |
89 int _sol; // Start of line where the file area starts | |
90 int _line; // First line of region | |
91 | |
92 public: | |
93 FileBuffRegion(FileBuff*, int sol, int line, int offset, int len); | |
94 ~FileBuffRegion(); | |
95 | |
96 FileBuffRegion *copy(); // Deep copy | |
97 FileBuffRegion *merge(FileBuffRegion*); // Merge 2 regions; delete input | |
98 | |
99 void print(ostream&); | |
100 friend ostream& operator<< (ostream&, FileBuffRegion&); | |
101 }; |