Files
foobar2000-sdk/foobar2000/helpers/CallForwarder.h
2021-12-14 00:28:25 -07:00

60 lines
1.5 KiB
C++

#pragma once
namespace CF {
template<typename obj_t, typename arg_t> class _inMainThread : public main_thread_callback {
public:
_inMainThread(obj_t const & obj, const arg_t & arg) : m_obj(obj), m_arg(arg) {}
void callback_run() {
if (m_obj.IsValid()) callInMainThread::callThis(&*m_obj, m_arg);
}
private:
obj_t m_obj;
arg_t m_arg;
};
template<typename TWhat> class CallForwarder {
private:
CallForwarder() = delete;
protected:
CallForwarder(TWhat * ptr) : m_ptr(pfc::rcnew_t<TWhat*>(ptr)) {}
void Orphan() {
*m_ptr = NULL;
}
public:
bool IsValid() const {
PFC_ASSERT( m_ptr.is_valid() );
return m_ptr.is_valid() && *m_ptr != NULL;
}
bool IsEmpty() const { return !IsValid(); }
TWhat * operator->() const {
PFC_ASSERT( IsValid() );
return *m_ptr;
}
TWhat & operator*() const {
PFC_ASSERT( IsValid() );
return **m_ptr;
}
template<typename arg_t>
void callInMainThread(const arg_t & arg) {
main_thread_callback_add( new service_impl_t<_inMainThread< CallForwarder<TWhat>, arg_t> >(*this, arg) );
}
private:
const pfc::rcptr_t<TWhat*> m_ptr;
};
template<typename TWhat> class CallForwarderMaster : public CallForwarder<TWhat> {
public:
CallForwarderMaster(TWhat * ptr) : CallForwarder<TWhat>(ptr) {PFC_ASSERT(ptr!=NULL);}
~CallForwarderMaster() { this->Orphan(); }
using CallForwarder<TWhat>::Orphan;
private:
CallForwarderMaster() = delete;
CallForwarderMaster( const CallForwarderMaster<TWhat> & ) = delete;
void operator=( const CallForwarderMaster & ) = delete;
};
}