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fix a crash caused by calling inner_widget_notifier's destroy twice

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This commit is contained in:
Jinhao 2015-08-27 01:40:18 +08:00
parent 29ab6be21b
commit 9384baace4
4 changed files with 17 additions and 13 deletions
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2
include/nana/gui/widgets/widget.hpp
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@ -31,7 +31,7 @@ namespace nana
: nana::noncopyable, nana::nonmovable
{
friend class detail::widget_notifier_interface;
class notifier;
class inner_widget_notifier;
typedef void(*dummy_bool_type)(widget* (*)(const widget&));
public:
virtual ~widget() = default;

19
source/gui/detail/window_manager.cpp
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@ -326,6 +326,9 @@ namespace detail
std::lock_guard<decltype(mutex_)> lock(mutex_);
if (impl_->wd_register.available(wd) == false) return;
if (wd->flags.destroying)
return;
if(wd->other.category == category::root_tag::value)
{
auto &brock = bedrock::instance();
@ -340,13 +343,15 @@ namespace detail
if(wd->flags.modal || (wd->owner == nullptr) || wd->owner->flags.take_active)
native_interface::activate_owner(wd->root);
//Close should detach the drawer and send destroy signal to widget object.
//Otherwise, when a widget object is been deleting in other thread by delete operator, the object will be destroyed
//before the window_manager destroyes the window, and then, window_manager detaches the
//non-existing drawer_trigger which is destroyed by destruction of widget. Crash!
wd->drawer.detached();
wd->widget_notifier->destroy();
if (!wd->flags.destroying)
{
//Close should detach the drawer and send destroy signal to widget object.
//Otherwise, when a widget object is been deleting in other thread by delete operator, the object will be destroyed
//before the window_manager destroyes the window, and then, window_manager detaches the
//non-existing drawer_trigger which is destroyed by destruction of widget. Crash!
wd->drawer.detached();
wd->widget_notifier->destroy();
}
native_interface::close_window(wd->root);
}

1
source/gui/widgets/tabbar.cpp
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@ -1440,7 +1440,6 @@ namespace nana
private:
void _m_calc_metrics(graph_reference graph, std::forward_list<item>& items)
{
const auto height_px = graph.height();
std::vector<unsigned> pxs;
unsigned pixels = 0;

8
source/gui/widgets/widget.cpp
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@ -22,10 +22,10 @@ namespace nana
//class widget
//@brief:The definition of class widget
class widget::notifier: public detail::widget_notifier_interface
class widget::inner_widget_notifier : public detail::widget_notifier_interface
{
public:
notifier(widget& wdg)
inner_widget_notifier(widget& wdg)
: wdg_(wdg)
{}
@ -246,7 +246,7 @@ namespace nana
std::unique_ptr<::nana::detail::widget_notifier_interface> widget::_m_wdg_notifier()
{
return std::unique_ptr<::nana::detail::widget_notifier_interface>(new notifier(*this));
return std::unique_ptr<::nana::detail::widget_notifier_interface>(new inner_widget_notifier(*this));
}
void widget::_m_complete_creation()
@ -348,7 +348,7 @@ namespace nana
{
std::unique_ptr<widget_notifier_interface> widget_notifier_interface::get_notifier(widget* wdg)
{
return std::unique_ptr<widget_notifier_interface>(new widget::notifier(*wdg));
return std::unique_ptr<widget_notifier_interface>(new widget::inner_widget_notifier(*wdg));
}
}
}//end namespace nana