1 /*
   2  * Copyright (c) 2002, 2004, 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 class ciObject;
  26 class ciSymbol;
  27 
  28 // CompileLog
  29 //
  30 // An open stream for logging information about activities in a
  31 // compiler thread.  There is exactly one per CompilerThread,
  32 // if the +LogCompilation switch is enabled.
  33 class CompileLog : public xmlStream {
  34  private:
  35   const char*   _file;           // name of file where XML goes
  36   julong        _file_end;       // last good end of file
  37   intx          _thread_id;      // which compile thread
  38 
  39   stringStream  _context;        // optional, killable context marker
  40   char          _context_buffer[100];
  41 
  42   char*         _identities;     // array of boolean
  43   int           _identities_limit;
  44   int           _identities_capacity;
  45 
  46   CompileLog*   _next;           // static chain of all logs
  47 
  48   static CompileLog* _first;     // head of static chain
  49 
  50   void va_tag(bool push, const char* format, va_list ap);
  51 
  52  public:
  53   CompileLog(const char* file, FILE* fp, intx thread_id);
  54   ~CompileLog();
  55 
  56   intx          thread_id()                      { return _thread_id; }
  57   const char*   file()                           { return _file; }
  58   stringStream* context()                        { return &_context; }
  59 
  60   void          name(ciSymbol* s);               // name='s'
  61   void          name(symbolHandle s)             { xmlStream::name(s); }
  62 
  63   // Output an object description, return obj->ident().
  64   int           identify(ciObject* obj);
  65   void          clear_identities();
  66 
  67   // virtuals
  68   virtual void see_tag(const char* tag, bool push);
  69   virtual void pop_tag(const char* tag);
  70 
  71   // make a provisional end of log mark
  72   void mark_file_end() { _file_end = out()->count(); }
  73 
  74   // copy all logs to the given stream
  75   static void finish_log(outputStream* out);
  76   static void finish_log_on_error(outputStream* out, char *buf, int buflen);
  77 };