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Fix FP_LOADER_THREAD access to destroyed dialog 

Fixes: lp:1672733
* https://bugs.launchpad.net/kicad/+bug/1672733
This commit is contained in:
Chris Pavlina 2017-03-26 19:43:41 -04:00
parent ef11d110b2
commit 61c2beea22
1 changed files with 45 additions and 12 deletions
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57
pcbnew/footprint_preview_panel.cpp
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@ -93,7 +93,6 @@ class FP_THREAD_IFACE
void AddToCache( CACHE_ENTRY const & aEntry )
{
MUTLOCK lock( m_lock );
m_cachedFootprints[aEntry.fpid] = aEntry;
}
@ -115,10 +114,48 @@ class FP_THREAD_IFACE
return m_current_fp;
}
/**
* Set the associated panel, for QueueEvent() and GetTable().
*/
void SetPanel( FOOTPRINT_PREVIEW_PANEL* aPanel )
{
MUTLOCK lock( m_lock );
m_panel = aPanel;
}
/**
* Post an event to the panel, if the panel still exists. Return whether
* the event was posted.
*/
bool QueueEvent( wxEvent const& aEvent )
{
MUTLOCK lock( m_lock );
if( m_panel )
{
m_panel->GetEventHandler()->QueueEvent( aEvent.Clone() );
return true;
}
else
{
return false;
}
}
/**
* Get an FP_LIB_TABLE, or null if the panel is dead.
*/
FP_LIB_TABLE* GetTable()
{
MUTLOCK locK( m_lock );
return m_panel ? m_panel->Prj().PcbFootprintLibs() : nullptr;
}
private:
std::deque<CACHE_ENTRY> m_loaderQueue;
std::map<LIB_ID, CACHE_ENTRY> m_cachedFootprints;
LIB_ID m_current_fp;
FOOTPRINT_PREVIEW_PANEL* m_panel;
MUTEX m_lock;
};
@ -131,14 +168,11 @@ class FP_LOADER_THREAD: public wxThread
{
using CACHE_ENTRY = FOOTPRINT_PREVIEW_PANEL::CACHE_ENTRY;
FOOTPRINT_PREVIEW_PANEL* m_parent;
std::shared_ptr<FP_THREAD_IFACE> m_iface;
public:
FP_LOADER_THREAD( FOOTPRINT_PREVIEW_PANEL* aParent,
std::shared_ptr<FP_THREAD_IFACE> const& aIface ):
FP_LOADER_THREAD( std::shared_ptr<FP_THREAD_IFACE> const& aIface ):
wxThread( wxTHREAD_DETACHED ),
m_parent( aParent ),
m_iface( aIface )
{}
@ -149,7 +183,7 @@ public:
void ProcessEntry( CACHE_ENTRY& aEntry )
{
FP_LIB_TABLE* fptbl = m_parent->Prj().PcbFootprintLibs();
FP_LIB_TABLE* fptbl = m_iface->GetTable();
if( !fptbl )
return;
@ -175,10 +209,8 @@ public:
if( aEntry.fpid == m_iface->GetCurrentFootprint() )
{
auto handler = m_parent->GetEventHandler();
if( handler )
handler->QueueEvent( new wxCommandEvent( wxEVT_COMMAND_TEXT_UPDATED, 1 ) );
wxCommandEvent evt( wxEVT_COMMAND_TEXT_UPDATED, 1 );
m_iface->QueueEvent( evt );
}
}
@ -208,7 +240,8 @@ FOOTPRINT_PREVIEW_PANEL::FOOTPRINT_PREVIEW_PANEL(
{
m_iface = std::make_shared<FP_THREAD_IFACE>();
m_loader = new FP_LOADER_THREAD( this, m_iface );
m_iface->SetPanel( this );
m_loader = new FP_LOADER_THREAD( m_iface );
m_loader->Run();
SetStealsFocus( false );
@ -230,7 +263,7 @@ FOOTPRINT_PREVIEW_PANEL::FOOTPRINT_PREVIEW_PANEL(
FOOTPRINT_PREVIEW_PANEL::~FOOTPRINT_PREVIEW_PANEL( )
{
m_loader->Delete();
m_iface->SetPanel( nullptr );
}