C++ Statement::CoveringAddressRange方法代码示例

void
BreakpointManager::_UpdateImageBreakpoints(Image* image, bool removeOnly)
{
	AutoLocker<BLocker> installLocker(fLock);
	AutoLocker<Team> teamLocker(fTeam);

	// remove obsolete user breakpoint instances
	BObjectList<Breakpoint> breakpointsToUpdate;
	for (UserBreakpointList::ConstIterator it
			= fTeam->UserBreakpoints().GetIterator();
		UserBreakpoint* userBreakpoint = it.Next();) {
		int32 instanceCount = userBreakpoint->CountInstances();
		for (int32 i = instanceCount - 1; i >= 0; i--) {
			UserBreakpointInstance* instance = userBreakpoint->InstanceAt(i);
			Breakpoint* breakpoint = instance->GetBreakpoint();
			if (breakpoint == NULL || breakpoint->GetImage() != image)
				continue;

			userBreakpoint->RemoveInstanceAt(i);
			breakpoint->RemoveUserBreakpoint(instance);

			if (!breakpointsToUpdate.AddItem(breakpoint)) {
				_UpdateBreakpointInstallation(breakpoint);
				if (breakpoint->IsUnused())
					fTeam->RemoveBreakpoint(breakpoint);
			}

			delete instance;
		}
	}

	// update breakpoints
	teamLocker.Unlock();
	for (int32 i = 0; Breakpoint* breakpoint = breakpointsToUpdate.ItemAt(i);
			i++) {
		_UpdateBreakpointInstallation(breakpoint);
	}

	teamLocker.Lock();
	for (int32 i = 0; Breakpoint* breakpoint = breakpointsToUpdate.ItemAt(i);
			i++) {
		if (breakpoint->IsUnused())
			fTeam->RemoveBreakpoint(breakpoint);
	}

	// add breakpoint instances for function instances in the image (if we have
	// an image debug info)
	BObjectList<UserBreakpointInstance> newInstances;
	ImageDebugInfo* imageDebugInfo = image->GetImageDebugInfo();
	if (imageDebugInfo == NULL)
		return;

	for (UserBreakpointList::ConstIterator it
			= fTeam->UserBreakpoints().GetIterator();
		UserBreakpoint* userBreakpoint = it.Next();) {
		// get the function
		Function* function = fTeam->FunctionByID(
			userBreakpoint->Location().GetFunctionID());
		if (function == NULL)
			continue;

		const SourceLocation& sourceLocation
			= userBreakpoint->Location().GetSourceLocation();
		target_addr_t relativeAddress
			= userBreakpoint->Location().RelativeAddress();

		// iterate through the function instances
		for (FunctionInstanceList::ConstIterator it
				= function->Instances().GetIterator();
			FunctionInstance* functionInstance = it.Next();) {
			if (functionInstance->GetImageDebugInfo() != imageDebugInfo)
				continue;

			// get the breakpoint address for the instance
			target_addr_t instanceAddress = 0;
			if (functionInstance->SourceFile() != NULL) {
				// We have a source file, so get the address for the source
				// location.
				Statement* statement = NULL;
				FunctionDebugInfo* functionDebugInfo
					= functionInstance->GetFunctionDebugInfo();
				functionDebugInfo->GetSpecificImageDebugInfo()
					->GetStatementAtSourceLocation(functionDebugInfo,
						sourceLocation, statement);
				if (statement != NULL) {
					instanceAddress = statement->CoveringAddressRange().Start();
						// TODO: What about BreakpointAllowed()?
					statement->ReleaseReference();
					// TODO: Make sure we do hit the function in question!
				}
			}

			if (instanceAddress == 0) {
				// No source file (or we failed getting the statement), so try
				// to use the same relative address.
				if (relativeAddress > functionInstance->Size())
					continue;
				instanceAddress = functionInstance->Address() + relativeAddress;
					// TODO: Make sure it does at least hit an instruction!
			}
//.........这里部分代码省略.........

//.........这里部分代码省略.........

		if (functionInstance == NULL)
			return;
		Function* function = functionInstance->GetFunction();

		TRACE_CONTROL("  function: %p\n", function);

		// get the source location for the address
		FunctionDebugInfo* functionDebugInfo
			= functionInstance->GetFunctionDebugInfo();
		SourceLocation sourceLocation;
		Statement* breakpointStatement = NULL;
		if (functionDebugInfo->GetSpecificImageDebugInfo()->GetStatement(
				functionDebugInfo, address, breakpointStatement) != B_OK) {
			return;
		}

		sourceLocation = breakpointStatement->StartSourceLocation();
		breakpointStatement->ReleaseReference();

		target_addr_t relativeAddress = address - functionInstance->Address();

		TRACE_CONTROL("  relative address: %#llx, source location: "
			"(%ld, %ld)\n", relativeAddress, sourceLocation.Line(),
			sourceLocation.Column());

		// get function id
		FunctionID* functionID = functionInstance->GetFunctionID();
		if (functionID == NULL)
			return;
		BReference<FunctionID> functionIDReference(functionID, true);

		// create the user breakpoint
		userBreakpoint = new(std::nothrow) UserBreakpoint(
			UserBreakpointLocation(functionID, function->SourceFile(),
				sourceLocation, relativeAddress));
		if (userBreakpoint == NULL)
			return;
		userBreakpointReference.SetTo(userBreakpoint, true);

		TRACE_CONTROL("  created user breakpoint: %p\n", userBreakpoint);

		// iterate through all function instances and create
		// UserBreakpointInstances
		for (FunctionInstanceList::ConstIterator it
					= function->Instances().GetIterator();
				FunctionInstance* instance = it.Next();) {
			TRACE_CONTROL("  function instance %p: range: %#llx - %#llx\n",
				instance, instance->Address(),
				instance->Address() + instance->Size());

			// get the breakpoint address for the instance
			target_addr_t instanceAddress = 0;
			if (instance == functionInstance) {
				instanceAddress = address;
			} else if (functionInstance->SourceFile() != NULL) {
				// We have a source file, so get the address for the source
				// location.
				Statement* statement = NULL;
				functionDebugInfo = instance->GetFunctionDebugInfo();
				functionDebugInfo->GetSpecificImageDebugInfo()
					->GetStatementAtSourceLocation(functionDebugInfo,
						sourceLocation, statement);
				if (statement != NULL) {
					instanceAddress = statement->CoveringAddressRange().Start();
						// TODO: What about BreakpointAllowed()?
					statement->ReleaseReference();
				}
			}

			TRACE_CONTROL("    breakpoint address using source info: %llx\n",
				instanceAddress);

			if (instanceAddress == 0) {
				// No source file (or we failed getting the statement), so try
				// to use the same relative address.
				if (relativeAddress > instance->Size())
					continue;
				instanceAddress = instance->Address() + relativeAddress;
			}

			TRACE_CONTROL("    final breakpoint address: %llx\n",
				instanceAddress);

			UserBreakpointInstance* breakpointInstance = new(std::nothrow)
				UserBreakpointInstance(userBreakpoint, instanceAddress);
			if (breakpointInstance == NULL
				|| !userBreakpoint->AddInstance(breakpointInstance)) {
				delete breakpointInstance;
				return;
			}

			TRACE_CONTROL("  breakpoint instance: %p\n", breakpointInstance);
		}
	}

	locker.Unlock();

	_HandleSetUserBreakpoint(userBreakpoint, enabled);
}