src/kits/debugger/debug_info/FunctionInstance.cpp

   1 /*
   2  * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "FunctionInstance.h"
   7
   8 #include <new>
   9
  10 #include "DisassembledCode.h"
  11 #include "Function.h"
  12 #include "FunctionID.h"
  13 #include "ImageDebugInfo.h"
  14 #include "LocatableFile.h"
  15
  16
  17 FunctionInstance::FunctionInstance(ImageDebugInfo* imageDebugInfo,
  18         FunctionDebugInfo* functionDebugInfo)
  19         :
  20         fImageDebugInfo(imageDebugInfo),
  21         fFunction(NULL),
  22         fFunctionDebugInfo(functionDebugInfo),
  23         fSourceCode(NULL),
  24         fSourceCodeState(FUNCTION_SOURCE_NOT_LOADED)
  25 {
  26         fFunctionDebugInfo->AcquireReference();
  27         // TODO: What about fImageDebugInfo? We must be careful regarding cyclic
  28         // references.
  29 }
  30
  31
  32 FunctionInstance::~FunctionInstance()
  33 {
  34         SetFunction(NULL);
  35         SetSourceCode(NULL, FUNCTION_SOURCE_NOT_LOADED);
  36         fFunctionDebugInfo->ReleaseReference();
  37 }
  38
  39
  40 FunctionID*
  41 FunctionInstance::GetFunctionID() const
  42 {
  43         if (LocatableFile* file = SourceFile()) {
  44                 BString path;
  45                 file->GetPath(path);
  46                 return new(std::nothrow) SourceFunctionID(path, Name());
  47         }
  48
  49         return new(std::nothrow) ImageFunctionID(
  50                 GetImageDebugInfo()->GetImageInfo().Name(), Name());
  51 }
  52
  53
  54 void
  55 FunctionInstance::SetFunction(Function* function)
  56 {
  57         if (fFunction != NULL)
  58                 fFunction->ReleaseReference();
  59
  60         fFunction = function;
  61
  62         if (fFunction != NULL)
  63                 fFunction->AcquireReference();
  64 }
  65
  66
  67 void
  68 FunctionInstance::SetSourceCode(DisassembledCode* source,
  69         function_source_state state)
  70 {
  71         if (source == fSourceCode && state == fSourceCodeState)
  72                 return;
  73
  74         if (fSourceCode != NULL)
  75                 fSourceCode->ReleaseReference();
  76
  77         fSourceCode = source;
  78         fSourceCodeState = state;
  79
  80         if (fSourceCode != NULL)
  81                 fSourceCode->AcquireReference();
  82
  83         if (fFunction != NULL)
  84                 fFunction->NotifySourceCodeChanged();
  85 }