[pykd] added : routine breakin ( Break into debugger )

git-svn-id: https://pykd.svn.codeplex.com/svn@69014 9b283d60-5439-405e-af05-b73fd8c4d996

pykd/dbgcmd.cpp

@@ -15,8 +15,6 @@ dbgCommand( const std::string &command )
 {
     HRESULT     hres;
 
-    try {
-    
     OutputReader        outReader(  dbgExt->client );
    
     hres = dbgExt->control->Execute( DEBUG_OUTCTL_THIS_CLIENT, command.c_str(), 0 );
@@ -25,17 +23,6 @@ dbgCommand( const std::string &command )
             
     return std::string( outReader.Line() );
 }	
-	catch( std::exception  &e )
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch(...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}	
-	
-	return "error"; 
-}	
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -43,21 +30,9 @@ dbgExtensionClass::dbgExtensionClass( const char* path ) : m_path(path)
 {
     HRESULT     hres;
 
-    try {
-        
     hres = dbgExt->control->AddExtension( path, 0, &m_handle );
     if ( FAILED( hres ) )
         throw DbgException( "IDebugControl::AddExtension failed" );
-        
-    }
-	catch( std::exception  &e )
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch(...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}	    
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -75,8 +50,6 @@ dbgExtensionClass::call( const std::string &command, const std::string params )
 {
     HRESULT     hres;
 
-    try {
-    
     OutputReader        outReader(  dbgExt->client );
 
     hres = dbgExt->control->CallExtension( m_handle, command.c_str(), params.c_str() );
@@ -85,40 +58,14 @@ dbgExtensionClass::call( const std::string &command, const std::string params )
         
     return std::string( outReader.Line() );
 }
-	catch( std::exception  &e )
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch(...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}	
-	
-	return "error"; 
-}
 
 ///////////////////////////////////////////////////////////////////////////////
 
 std::string
 dbgExtensionClass::print() const
-{
-	HRESULT status = S_OK;
-
-	try
 {
     return m_handle ? m_path : "";
 }
-	catch (std::exception & e)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch (...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}
-
-	return "";
-}
 
 /////////////////////////////////////////////////////////////////////////////// 
 
@@ -128,8 +75,6 @@ evaluate( const std::string  &expression )
     HRESULT             hres;
     ULONG64             value = 0;
 
-    try {
-    
     DEBUG_VALUE  debugValue = {};
     ULONG        remainderIndex = 0;
     
@@ -161,18 +106,24 @@ evaluate( const std::string  &expression )
         if ( remainderIndex == expression.length() )
             value = debugValue.I32;
     }      
-    } 
-	catch( std::exception  &e )
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch(...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}	
 
     return value;
 }
 
 /////////////////////////////////////////////////////////////////////////////// 
 
+void
+breakin()
+{
+    HRESULT     hres;
+
+    {
+        PyThread_StateRestore       state;
+        hres = dbgExt->control->SetInterrupt( DEBUG_INTERRUPT_ACTIVE );
+    }
+
+    if ( FAILED( hres ) )
+        throw DbgException( "IDebugControl::SetInterrupt" );            
+}
+
+/////////////////////////////////////////////////////////////////////////////// 

pykd/dbgcmd.h

@@ -10,17 +10,15 @@ std::string
 dbgCommand( const std::string &command );
 
 template <ULONG status>
-bool
+void
 setExecutionStatus()
 {
     HRESULT     hres;
 
-    try {
-  
     hres = dbgExt->control->SetExecutionStatus( status );
         
     if ( FAILED( hres ) )
-            return false;
+        throw DbgException( "IDebugControl::SetExecutionStatus failed" );
             
     ULONG    currentStatus;                
           
@@ -34,29 +32,15 @@ setExecutionStatus()
         }
     
         if ( FAILED( hres ) )
-                throw  DbgException( "IDebugControl::SetExecutionStatus  failed" ); 
+            throw  DbgException( "IDebugControl::WaitForEvent  failed" ); 
                         
         hres = dbgExt->control->GetExecutionStatus( &currentStatus );
             
         if ( FAILED( hres ) )
             throw  DbgException( "IDebugControl::GetExecutionStatus  failed" ); 
             
-                
     } while( currentStatus != DEBUG_STATUS_BREAK && currentStatus != DEBUG_STATUS_NO_DEBUGGEE );
 
-        return true;
-            
-    } 
-	catch( std::exception  &e )
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd error: %s\n", e.what() );
-	}
-	catch(...)
-	{
-		dbgExt->control->Output( DEBUG_OUTPUT_ERROR, "pykd unexpected error\n" );
-	}	
-	
-	return false;
 }
 
 /////////////////////////////////////////////////////////////////////////////////
@@ -92,3 +76,8 @@ ULONG64
 evaluate( const std::string  &expression );
     
 /////////////////////////////////////////////////////////////////////////////////
+
+void
+breakin();
+
+/////////////////////////////////////////////////////////////////////////////////

pykd/dbgext.cpp

@@ -75,6 +75,8 @@ BOOST_PYTHON_MODULE( pykd )
         "Change debugger status to DEBUG_STATUS_STEP_INTO" );
     boost::python::def( "step", &setExecutionStatus<DEBUG_STATUS_STEP_OVER>, 
         "Change debugger status to DEBUG_STATUS_STEP_OVER" );   
+    boost::python::def( "breakin", &breakin,
+        "Break into debugger" );
     boost::python::def( "expr", &evaluate, 
         "Evaluate windbg expression" ); 
     boost::python::def( "isWindbgExt", &isWindbgExt,