Mercurial > hg > graal-compiler
view src/share/vm/adlc/filebuff.hpp @ 124:b130b98db9cf
6689060: Escape Analysis does not work with Compressed Oops
Summary: 64-bits VM crashes with -XX:+AggresiveOpts (Escape Analysis + Compressed Oops)
Reviewed-by: never, sgoldman
author | kvn |
---|---|
date | Wed, 23 Apr 2008 11:20:36 -0700 |
parents | a61af66fc99e |
children | 3e82d72933d0 |
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/* * Copyright 1997-2004 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // FILEBUFF.HPP - Definitions for parser file buffering routines #if _MSC_VER >= 1300 // Visual C++ 7.0 or later #include <iostream> #else #include <iostream.h> #endif // STRUCTURE FOR HANDLING INPUT AND OUTPUT FILES typedef struct { const char *_name; FILE *_fp; } BufferedFile; class ArchDesc; //------------------------------FileBuff-------------------------------------- // This class defines a nicely behaved buffer of text. Entire file of text // is read into buffer at creation, with sentinals at start and end. class FileBuff { friend class FileBuffRegion; private: long _bufferSize; // Size of text holding buffer. long _offset; // Expected filepointer offset. long _bufoff; // Start of buffer file offset char *_buf; // The buffer itself. char *_bigbuf; // The buffer plus sentinals; actual heap area char *_bufmax; // A pointer to the buffer end sentinal char *_bufeol; // A pointer to the last complete line end int _err; // Error flag for file seek/read operations long _filepos; // Current offset from start of file ArchDesc& _AD; // Reference to Architecture Description // Error reporting function void file_error(int flag, int linenum, const char *fmt, ...); public: const BufferedFile *_fp; // File to be buffered FileBuff(BufferedFile *fp, ArchDesc& archDesc); // Constructor ~FileBuff(); // Destructor // This returns a pointer to the start of the current line in the buffer, // and increments bufeol and filepos to point at the end of that line. char *get_line(void); // This converts a pointer into the buffer to a file offset. It only works // when the pointer is valid (i.e. just obtained from getline()). int getoff(const char *s) { return _bufoff+(int)(s-_buf); } }; //------------------------------FileBuffRegion--------------------------------- // A buffer region is really a region of some file, specified as a linked list // of offsets and lengths. These regions can be merged; overlapping regions // will coalesce. class FileBuffRegion { public: // Workaround dev-studio friend/private bug FileBuffRegion *_next; // Linked list of regions sorted by offset. private: FileBuff *_bfr; // The Buffer of the file int _offset, _length; // The file area int _sol; // Start of line where the file area starts int _line; // First line of region public: FileBuffRegion(FileBuff*, int sol, int line, int offset, int len); ~FileBuffRegion(); FileBuffRegion *copy(); // Deep copy FileBuffRegion *merge(FileBuffRegion*); // Merge 2 regions; delete input // void print(std::ostream&); // friend std::ostream& operator<< (std::ostream&, FileBuffRegion&); void print(ostream&); friend ostream& operator<< (ostream&, FileBuffRegion&); };