From 56ae875861ab260b80a030f50c4aff9f9dc8fff0 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 13:32:39 +0200
Subject: Adding upstream version 2.14.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 lib/remote/configobjectslock.hpp | 72 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 lib/remote/configobjectslock.hpp

(limited to 'lib/remote/configobjectslock.hpp')

diff --git a/lib/remote/configobjectslock.hpp b/lib/remote/configobjectslock.hpp
new file mode 100644
index 0000000..ee90981
--- /dev/null
+++ b/lib/remote/configobjectslock.hpp
@@ -0,0 +1,72 @@
+/* Icinga 2 | (c) 2023 Icinga GmbH | GPLv2+ */
+
+#pragma once
+
+#include <mutex>
+
+#ifndef _WIN32
+#include <boost/interprocess/sync/interprocess_sharable_mutex.hpp>
+#include <boost/interprocess/sync/scoped_lock.hpp>
+#include <boost/interprocess/sync/sharable_lock.hpp>
+#endif /* _WIN32 */
+
+namespace icinga
+{
+
+#ifdef _WIN32
+
+class ConfigObjectsSharedLock
+{
+public:
+	inline ConfigObjectsSharedLock(std::try_to_lock_t)
+	{
+	}
+
+	constexpr explicit operator bool() const
+	{
+		return true;
+	}
+};
+
+#else /* _WIN32 */
+
+/**
+ * Waits until all ConfigObjects*Lock-s have vanished. For its lifetime disallows such.
+ * Keep an instance alive during reload to forbid runtime config changes!
+ * This way Icinga reads a consistent config which doesn't suddenly get runtime-changed.
+ *
+ * @ingroup remote
+ */
+class ConfigObjectsExclusiveLock
+{
+public:
+	ConfigObjectsExclusiveLock();
+
+private:
+	boost::interprocess::scoped_lock<boost::interprocess::interprocess_sharable_mutex> m_Lock;
+};
+
+/**
+ * Waits until the only ConfigObjectsExclusiveLock has vanished (if any). For its lifetime disallows such.
+ * Keep an instance alive during runtime config changes to delay a reload (if any)!
+ * This way Icinga reads a consistent config which doesn't suddenly get runtime-changed.
+ *
+ * @ingroup remote
+ */
+class ConfigObjectsSharedLock
+{
+public:
+	ConfigObjectsSharedLock(std::try_to_lock_t);
+
+	inline explicit operator bool() const
+	{
+		return m_Lock.owns();
+	}
+
+private:
+	boost::interprocess::sharable_lock<boost::interprocess::interprocess_sharable_mutex> m_Lock;
+};
+
+#endif /* _WIN32 */
+
+}
-- 
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