C++ (Cpp) DataSource::PerCPU示例

示例#1

status_t
ActivityView::SaveState(BMessage& state) const
{
	status_t status = state.AddBool("show legend", fShowLegend);
	if (status != B_OK)
		return status;

	status = state.AddInt64("refresh interval", fRefreshInterval);
	if (status != B_OK)
		return status;

	status = state.AddData("history background color", B_RGB_COLOR_TYPE,
		&fHistoryBackgroundColor, sizeof(rgb_color));
	if (status != B_OK)
		return status;

	for (int32 i = 0; i < fSources.CountItems(); i++) {
		DataSource* source = fSources.ItemAt(i);

		if (!source->PerCPU() || source->CPU() == 0)
			status = state.AddString("source", source->InternalName());
		if (status != B_OK)
			return status;

		BString name = source->Name();
		name << " color";
		rgb_color color = source->Color();
		state.AddData(name.String(), B_RGB_COLOR_TYPE, &color,
			sizeof(rgb_color));
	}
	return B_OK;
}