std::wstring get_call_stack()
{
class log_call_stack_walker : public stack_walker
{
std::string str_;
public:
log_call_stack_walker() : stack_walker() {}
std::string flush()
{
return std::move(str_);
}
protected:
virtual void OnSymInit(LPCSTR szSearchPath, DWORD symOptions, LPCSTR szUserName)
{
}
virtual void OnLoadModule(LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size, DWORD result, LPCSTR symType, LPCSTR pdbName, ULONGLONG fileVersion)
{
}
virtual void OnDbgHelpErr(LPCSTR szFuncName, DWORD gle, DWORD64 addr)
{
}
virtual void OnOutput(LPCSTR szText)
{
std::string str = szText;
if(str.find("internal::get_call_stack") == std::string::npos && str.find("stack_walker::ShowCallstack") == std::string::npos)
str_ += std::move(str);
}
};
static tbb::enumerable_thread_specific<log_call_stack_walker> walkers;
try
{
auto& walker = walkers.local();
walker.ShowCallstack();
return u16(walker.flush());
}
catch(...)
{
return L"!!!";
}
}
void DependencyNode::propagateDirtiness( Plug *plugToDirty )
{
// we're not able to signal anything if there's no node, so just early out
Node *node = plugToDirty->ancestor<Node>();
if( !node )
{
return;
}
// we don't emit dirtiness immediately for each plug as we traverse the
// dependency graph for two reasons :
//
// - we don't want to emit dirtiness for the same plug more than once
// - we don't want to emit dirtiness while the graph may still be being
// rewired by slots connected to plugSetSignal() or plugInputChangedSignal()
//
// instead we collect all the dirty plugs in a container as we traverse
// the graph and only when the traversal is complete do we emit the plugDirtiedSignal().
//
// the container used is stored per-thread as although it's illegal to be
// monkeying with a script from multiple threads, it's perfectly legal to
// be monkeying with a different script in each thread.
DirtyPlugsContainer &dirtyPlugs = g_dirtyPlugsContainers.local();
// if the container is currently empty then we are at the start of a traversal,
// and will emit plugDirtiedSignal() and empty the container before returning
// from this function. if the container isn't empty then we are mid-traversal
// and will just add to it.
const bool emit = dirtyPlugs.empty();
Plug *p = plugToDirty;
while( p )
{
dirtyPlugs.insert( p );
p = p->parent<Plug>();
}
// we only propagate dirtiness along leaf level plugs, because
// they are the only plugs which can be the target of the affects(),
// and compute() methods.
if( !plugToDirty->isInstanceOf( (IECore::TypeId)CompoundPlugTypeId ) )
{
DependencyNode *dependencyNode = IECore::runTimeCast<DependencyNode>( node );
if( dependencyNode )
{
AffectedPlugsContainer affected;
dependencyNode->affects( plugToDirty, affected );
for( AffectedPlugsContainer::const_iterator it=affected.begin(); it!=affected.end(); it++ )
{
if( ( *it )->isInstanceOf( (IECore::TypeId)Gaffer::CompoundPlugTypeId ) )
{
// DependencyNode::affects() implementations are only allowed to place leaf plugs in the outputs,
// so we helpfully report any mistakes.
dirtyPlugs.clear();
throw IECore::Exception( "Non-leaf plug " + (*it)->fullName() + " cannot be returned by affects()" );
}
// cast is ok - AffectedPlugsContainer only holds const pointers so that
// affects() can be const to discourage implementations from having side effects.
propagateDirtiness( const_cast<Plug *>( *it ) );
}
}
for( Plug::OutputContainer::const_iterator it=plugToDirty->outputs().begin(), eIt=plugToDirty->outputs().end(); it!=eIt; ++it )
{
propagateDirtiness( *it );
}
}
if( emit )
{
for( size_t i = 0, e = dirtyPlugs.size(); i < e; ++i )
{
Plug *plug = dirtyPlugs.get<1>()[i];
Node *node = plug->node();
if( node )
{
node->plugDirtiedSignal()( plug );
}
}
dirtyPlugs.clear();
}
}
static DirtyPlugs &local()
{
static tbb::enumerable_thread_specific<Plug::DirtyPlugs> g_dirtyPlugs;
return g_dirtyPlugs.local();
}