Catch2/src/catch2/internal/catch_singletons.cpp

#include <catch2/internal/catch_singletons.hpp>

#include <vector>

namespace Catch {

    namespace {
        static auto getSingletons() -> std::vector<ISingleton*>*& {
            static std::vector<ISingleton*>* g_singletons = nullptr;
            if( !g_singletons )
                g_singletons = new std::vector<ISingleton*>();
            return g_singletons;
        }
    }

    ISingleton::~ISingleton() {}

    void addSingleton(ISingleton* singleton ) {
        getSingletons()->push_back( singleton );
    }
    void cleanupSingletons() {
        auto& singletons = getSingletons();
        for( auto singleton : *singletons )
            delete singleton;
        delete singletons;
        singletons = nullptr;
    }

} // namespace Catch