Method Unregister

lib/icinga/dependency-group.cpp:46–64

* Detach the provided child Checkable from the specified dependency group. * * Unregisters all the dependency objects the child Checkable depends on from the provided dependency group and * removes the dependency group from the global registry if it becomes empty afterward. * * @param dependencyGroup The dependency group to unregister the child Checkable from. * @param child The child Checka

 *           and a boolean indicating whether the dependency group has been erased from the global registry.
 */
std::pair<std::set<Dependency::Ptr>, bool> DependencyGroup::Unregister(const DependencyGroup::Ptr& dependencyGroup, const Checkable::Ptr& child)
{
	std::lock_guard lock(m_RegistryMutex);
	if (auto it(m_Registry.find(dependencyGroup)); it != m_Registry.end()) {
		auto& existingGroup(*it);
		auto dependencies(existingGroup->GetDependenciesForChild(child.get()));

		for (const auto& dependency : dependencies) {
			existingGroup->RemoveDependency(dependency);
		}

		bool remove = !existingGroup->HasChildren();
		if (remove) {
			m_Registry.erase(it);
		}
		return {{dependencies.begin(), dependencies.end()}, remove};
	}
	return {{}, false};
}

/**
 * Retrieve the size of the global dependency group registry.