src/share/vm/code/scopeDesc.cpp
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src/share/vm/code/scopeDesc.cpp

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  29 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset) {
  30   _code          = code;
  31   _decode_offset = decode_offset;
  32   _objects       = decode_object_values(obj_decode_offset);
  33   decode_body();
  34 }
  35 
  36 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset) {
  37   _code          = code;
  38   _decode_offset = decode_offset;
  39   _objects       = decode_object_values(DebugInformationRecorder::serialized_null);
  40   decode_body();
  41 }
  42 
  43 
  44 ScopeDesc::ScopeDesc(const ScopeDesc* parent) {
  45   _code          = parent->_code;
  46   _decode_offset = parent->_sender_decode_offset;
  47   _objects       = parent->_objects;
  48   decode_body();

  49 }
  50 
  51 
  52 void ScopeDesc::decode_body() {
  53   if (decode_offset() == DebugInformationRecorder::serialized_null) {
  54     // This is a sentinel record, which is only relevant to
  55     // approximate queries.  Decode a reasonable frame.
  56     _sender_decode_offset = DebugInformationRecorder::serialized_null;
  57     _method = methodHandle(_code->method());
  58     _bci = InvocationEntryBci;

  59     _locals_decode_offset = DebugInformationRecorder::serialized_null;
  60     _expressions_decode_offset = DebugInformationRecorder::serialized_null;
  61     _monitors_decode_offset = DebugInformationRecorder::serialized_null;
  62   } else {
  63     // decode header
  64     DebugInfoReadStream* stream  = stream_at(decode_offset());
  65 
  66     _sender_decode_offset = stream->read_int();
  67     _method = methodHandle((methodOop) stream->read_oop());
  68     _bci    = stream->read_bci();

  69     // decode offsets for body and sender
  70     _locals_decode_offset      = stream->read_int();
  71     _expressions_decode_offset = stream->read_int();
  72     _monitors_decode_offset    = stream->read_int();
  73   }
  74 }
  75 
  76 
  77 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) {
  78   if (decode_offset == DebugInformationRecorder::serialized_null) return NULL;
  79   DebugInfoReadStream* stream = stream_at(decode_offset);
  80   int length = stream->read_int();
  81   GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length);
  82   for (int index = 0; index < length; index++) {
  83     result->push(ScopeValue::read_from(stream));
  84   }
  85   return result;
  86 }
  87 
  88 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) {


 153     st->print_cr("@%d", bci());
 154   }
 155 }
 156 
 157 void ScopeDesc::print_on(outputStream* st) const {
 158   print_on(st, NULL);
 159 }
 160 
 161 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const {
 162   // header
 163   if (pd != NULL) {
 164     tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset());
 165   }
 166 
 167   print_value_on(st);
 168   // decode offsets
 169   if (WizardMode) {
 170     st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin());
 171     st->print_cr(" offset:     %d",    _decode_offset);
 172     st->print_cr(" bci:        %d",    bci());

 173     st->print_cr(" locals:     %d",    _locals_decode_offset);
 174     st->print_cr(" stack:      %d",    _expressions_decode_offset);
 175     st->print_cr(" monitor:    %d",    _monitors_decode_offset);
 176     st->print_cr(" sender:     %d",    _sender_decode_offset);
 177   }
 178   // locals
 179   { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals();
 180     if (l != NULL) {
 181       tty->print_cr("   Locals");
 182       for (int index = 0; index < l->length(); index++) {
 183         st->print("    - l%d: ", index);
 184         l->at(index)->print_on(st);
 185         st->cr();
 186       }
 187     }
 188   }
 189   // expressions
 190   { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions();
 191     if (l != NULL) {
 192       st->print_cr("   Expression stack");




  29 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset) {
  30   _code          = code;
  31   _decode_offset = decode_offset;
  32   _objects       = decode_object_values(obj_decode_offset);
  33   decode_body();
  34 }
  35 
  36 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset) {
  37   _code          = code;
  38   _decode_offset = decode_offset;
  39   _objects       = decode_object_values(DebugInformationRecorder::serialized_null);
  40   decode_body();
  41 }
  42 
  43 
  44 ScopeDesc::ScopeDesc(const ScopeDesc* parent) {
  45   _code          = parent->_code;
  46   _decode_offset = parent->_sender_decode_offset;
  47   _objects       = parent->_objects;
  48   decode_body();
  49   assert(_reexecute == false, "reexecute not allowed");
  50 }
  51 
  52 
  53 void ScopeDesc::decode_body() {
  54   if (decode_offset() == DebugInformationRecorder::serialized_null) {
  55     // This is a sentinel record, which is only relevant to
  56     // approximate queries.  Decode a reasonable frame.
  57     _sender_decode_offset = DebugInformationRecorder::serialized_null;
  58     _method = methodHandle(_code->method());
  59     _bci = InvocationEntryBci;
  60     _reexecute = false;
  61     _locals_decode_offset = DebugInformationRecorder::serialized_null;
  62     _expressions_decode_offset = DebugInformationRecorder::serialized_null;
  63     _monitors_decode_offset = DebugInformationRecorder::serialized_null;
  64   } else {
  65     // decode header
  66     DebugInfoReadStream* stream  = stream_at(decode_offset());
  67 
  68     _sender_decode_offset = stream->read_int();
  69     _method = methodHandle((methodOop) stream->read_oop());
  70     _bci    = stream->read_bci_and_reexecute(_reexecute);
  71 
  72     // decode offsets for body and sender
  73     _locals_decode_offset      = stream->read_int();
  74     _expressions_decode_offset = stream->read_int();
  75     _monitors_decode_offset    = stream->read_int();
  76   }
  77 }
  78 
  79 
  80 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) {
  81   if (decode_offset == DebugInformationRecorder::serialized_null) return NULL;
  82   DebugInfoReadStream* stream = stream_at(decode_offset);
  83   int length = stream->read_int();
  84   GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length);
  85   for (int index = 0; index < length; index++) {
  86     result->push(ScopeValue::read_from(stream));
  87   }
  88   return result;
  89 }
  90 
  91 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) {


 156     st->print_cr("@%d", bci());
 157   }
 158 }
 159 
 160 void ScopeDesc::print_on(outputStream* st) const {
 161   print_on(st, NULL);
 162 }
 163 
 164 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const {
 165   // header
 166   if (pd != NULL) {
 167     tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset());
 168   }
 169 
 170   print_value_on(st);
 171   // decode offsets
 172   if (WizardMode) {
 173     st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->instructions_begin());
 174     st->print_cr(" offset:     %d",    _decode_offset);
 175     st->print_cr(" bci:        %d",    bci());
 176     st->print_cr(" reexecute:  %s",    should_reexecute() ? "true" : "false");
 177     st->print_cr(" locals:     %d",    _locals_decode_offset);
 178     st->print_cr(" stack:      %d",    _expressions_decode_offset);
 179     st->print_cr(" monitor:    %d",    _monitors_decode_offset);
 180     st->print_cr(" sender:     %d",    _sender_decode_offset);
 181   }
 182   // locals
 183   { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals();
 184     if (l != NULL) {
 185       tty->print_cr("   Locals");
 186       for (int index = 0; index < l->length(); index++) {
 187         st->print("    - l%d: ", index);
 188         l->at(index)->print_on(st);
 189         st->cr();
 190       }
 191     }
 192   }
 193   // expressions
 194   { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions();
 195     if (l != NULL) {
 196       st->print_cr("   Expression stack");


src/share/vm/code/scopeDesc.cpp
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