/*

 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

 * questions.

 *

 */

#ifndef SHARE_VM_COMPILER_COMPILELOG_HPP

#define SHARE_VM_COMPILER_COMPILELOG_HPP

#include "utilities/xmlstream.hpp"

class ciBaseObject;

class ciObject;

class ciMetadata;

class ciSymbol;

// CompileLog

//

// An open stream for logging information about activities in a

// compiler thread.  There is exactly one per CompilerThread,

// if the +LogCompilation switch is enabled.

class CompileLog : public xmlStream {

 private:

  const char*   _file;           // name of file where XML goes

  julong        _file_end;       // last good end of file

  intx          _thread_id;      // which compile thread

  stringStream  _context;        // optional, killable context marker

  char          _context_buffer[100];

  char*         _identities;     // array of boolean

  int           _identities_limit;

  int           _identities_capacity;

  CompileLog*   _next;           // static chain of all logs

  static CompileLog* _first;     // head of static chain

  void va_tag(bool push, const char* format, va_list ap);

 public:

  ~CompileLog();

  intx          thread_id()                      { return _thread_id; }

  const char*   file()                           { return _file; }

  // Optional context marker, to help place actions that occur during

  // parsing. If there is no log output until the next context string

  // or reset, context string will be silently ignored

  stringStream* context()                        { return &_context; }

  void    clear_context()                        { context()->reset(); }

  void      set_context(const char* format, ...);

  void          name(ciSymbol* s);               // name='s'

  void          name(Symbol* s)                  { xmlStream::name(s); }

  // Output an object description, return obj->ident().

  int           identify(ciBaseObject* obj);

  void          clear_identities();

  void inline_fail   (const char* reason);

  void inline_success(const char* reason);

  // virtuals

  virtual void see_tag(const char* tag, bool push);

  virtual void pop_tag(const char* tag);

  // make a provisional end of log mark

  void mark_file_end() { _file_end = out()->count(); }

  // Print code cache statistics

  void code_cache_state();

  // copy all logs to the given stream

  static void finish_log(outputStream* out);

  static void finish_log_on_error(outputStream* out, char *buf, int buflen);

};

#endif // SHARE_VM_COMPILER_COMPILELOG_HPP