1 files changed, 61 insertions, 0 deletions
diff --git a/lib/config/activationcontext.cpp b/lib/config/activationcontext.cpp
new file mode 100644
index 0000000..d050875
--- /dev/null
+++ b/lib/config/activationcontext.cpp
@@ -0,0 +1,61 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "config/activationcontext.hpp"
+#include "base/exception.hpp"
+
+using namespace icinga;
+
+boost::thread_specific_ptr<std::stack<ActivationContext::Ptr> > ActivationContext::m_ActivationStack;
+
+std::stack<ActivationContext::Ptr>& ActivationContext::GetActivationStack()
+{
+	std::stack<ActivationContext::Ptr> *actx = m_ActivationStack.get();
+
+	if (!actx) {
+		actx = new std::stack<ActivationContext::Ptr>();
+		m_ActivationStack.reset(actx);
+	}
+
+	return *actx;
+}
+
+void ActivationContext::PushContext(const ActivationContext::Ptr& context)
+{
+	GetActivationStack().push(context);
+}
+
+void ActivationContext::PopContext()
+{
+	ASSERT(!GetActivationStack().empty());
+	GetActivationStack().pop();
+}
+
+ActivationContext::Ptr ActivationContext::GetCurrentContext()
+{
+	std::stack<ActivationContext::Ptr>& astack = GetActivationStack();
+
+	if (astack.empty())
+		BOOST_THROW_EXCEPTION(std::runtime_error("Objects may not be created outside of an activation context."));
+
+	return astack.top();
+}
+
+ActivationScope::ActivationScope(ActivationContext::Ptr context)
+	: m_Context(std::move(context))
+{
+	if (!m_Context)
+		m_Context = new ActivationContext();
+
+	ActivationContext::PushContext(m_Context);
+}
+
+ActivationScope::~ActivationScope()
+{
+	ActivationContext::PopContext();
+}
+
+ActivationContext::Ptr ActivationScope::GetContext() const
+{
+	return m_Context;
+}
+