1 /*

     2  * Copyright (c) 2015, 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.

     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  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_MEMORY_CLASSLISTPARSER_HPP

    26 #define SHARE_VM_MEMORY_CLASSLISTPARSER_HPP

    27 

    28 #include "utilities/exceptions.hpp"

    29 #include "utilities/globalDefinitions.hpp"

    30 

    31 class ClassListParser : public StackObj {

    32   enum {

    33     // Max number of bytes allowed per line in the classlist.

    34     // Theoretically Java class names could be 65535 bytes in length. In reality,

    35     // 4K bytes is more than enough.

    36     _max_allowed_line_len = 4096,

    37     _line_buf_extra       = 10, // for detecting input too long

    38     _line_buf_size        = _max_allowed_line_len + _line_buf_extra

    39   };

    40 

    41   const char* _classlist_file;

    42   FILE* _file;

    43   char  _line[_line_buf_size];  // The buffer that holds the current line.

    44 

    45 public:

    46   ClassListParser(const char* file);

    47   ~ClassListParser();

    48   bool parse_one_line();

    49 

    50   const char* current_class_name() {

    51     return _line;

    52   }

    53 };

    54 

    55 

    56 #endif // SHARE_VM_MEMORY_CLASSLISTPARSER_HPP