src/share/vm/code/debugInfo.hpp
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src/share/vm/code/debugInfo.hpp

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   1 /*
   2  * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *


 238 
 239 class DebugInfoReadStream : public CompressedReadStream {
 240  private:
 241   const nmethod* _code;
 242   const nmethod* code() const { return _code; }
 243   GrowableArray<ScopeValue*>* _obj_pool;
 244  public:
 245   DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) :
 246     CompressedReadStream(code->scopes_data_begin(), offset) {
 247     _code = code;
 248     _obj_pool = obj_pool;
 249 
 250   } ;
 251 
 252   oop read_oop() {
 253     return code()->oop_at(read_int());
 254   }
 255   ScopeValue* read_object_value();
 256   ScopeValue* get_cached_object();
 257   // BCI encoding is mostly unsigned, but -1 is a distinguished value
 258   // Decoding based on encoding: bci = InvocationEntryBci + read_int()/2; reexecute = read_int()%2 == 1 ? true : false;
 259   int read_bci_and_reexecute(bool& reexecute) { int i = read_int(); reexecute = (i & 1) ? true : false; return (i >> 1) + InvocationEntryBci; }
 260 };
 261 
 262 // DebugInfoWriteStream specializes CompressedWriteStream for
 263 // writing debugging information. Used by ScopeDescRecorder.
 264 
 265 class DebugInfoWriteStream : public CompressedWriteStream {
 266  private:
 267   DebugInformationRecorder* _recorder;
 268   DebugInformationRecorder* recorder() const { return _recorder; }
 269  public:
 270   DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size);
 271   void write_handle(jobject h);
 272   //Encoding bci and reexecute into one word as (bci - InvocationEntryBci)*2 + reexecute
 273   void write_bci_and_reexecute(int bci, bool reexecute) { write_int(((bci - InvocationEntryBci) << 1) + (reexecute ? 1 : 0)); }
 274 };
   1 /*
   2  * Copyright 1997-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *


 238 
 239 class DebugInfoReadStream : public CompressedReadStream {
 240  private:
 241   const nmethod* _code;
 242   const nmethod* code() const { return _code; }
 243   GrowableArray<ScopeValue*>* _obj_pool;
 244  public:
 245   DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) :
 246     CompressedReadStream(code->scopes_data_begin(), offset) {
 247     _code = code;
 248     _obj_pool = obj_pool;
 249 
 250   } ;
 251 
 252   oop read_oop() {
 253     return code()->oop_at(read_int());
 254   }
 255   ScopeValue* read_object_value();
 256   ScopeValue* get_cached_object();
 257   // BCI encoding is mostly unsigned, but -1 is a distinguished value
 258   int read_bci() { return read_int() + InvocationEntryBci; }

 259 };
 260 
 261 // DebugInfoWriteStream specializes CompressedWriteStream for
 262 // writing debugging information. Used by ScopeDescRecorder.
 263 
 264 class DebugInfoWriteStream : public CompressedWriteStream {
 265  private:
 266   DebugInformationRecorder* _recorder;
 267   DebugInformationRecorder* recorder() const { return _recorder; }
 268  public:
 269   DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size);
 270   void write_handle(jobject h);
 271   void write_bci(int bci) { write_int(bci - InvocationEntryBci); }

 272 };
src/share/vm/code/debugInfo.hpp
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