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         fFunctionDebugInfo->ReleaseReference();
  36 }
  37
  38
  39 FunctionID*
  40 FunctionInstance::GetFunctionID() const
  41 {
  42         if (LocatableFile* file = SourceFile()) {
  43                 BString path;
  44                 file->GetPath(path);
  45                 return new(std::nothrow) SourceFunctionID(path, Name());
  46         }
  47
  48         return new(std::nothrow) ImageFunctionID(
  49                 GetImageDebugInfo()->GetImageInfo().Name(), Name());
  50 }
  51
  52
  53 void
  54 FunctionInstance::SetFunction(Function* function)
  55 {
  56         if (fFunction != NULL)
  57                 fFunction->ReleaseReference();
  58
  59         fFunction = function;
  60
  61         if (fFunction != NULL)
  62                 fFunction->AcquireReference();
  63 }
  64
  65
  66 void
  67 FunctionInstance::SetSourceCode(DisassembledCode* source,
  68         function_source_state state)
  69 {
  70         if (source == fSourceCode && state == fSourceCodeState)
  71                 return;
  72
  73         if (fSourceCode != NULL)
  74                 fSourceCode->ReleaseReference();
  75
  76         fSourceCode = source;
  77         fSourceCodeState = state;
  78
  79         if (fSourceCode != NULL)
  80                 fSourceCode->AcquireReference();
  81
  82         if (fFunction != NULL)
  83                 fFunction->NotifySourceCodeChanged();
  84 }