mirror of https://github.com/Icinga/icinga2.git
73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
/* Icinga 2 | (c) 2023 Icinga GmbH | GPLv2+ */
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#pragma once
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#include <mutex>
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#ifndef _WIN32
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#include <boost/interprocess/sync/interprocess_sharable_mutex.hpp>
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#include <boost/interprocess/sync/scoped_lock.hpp>
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#include <boost/interprocess/sync/sharable_lock.hpp>
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#endif /* _WIN32 */
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namespace icinga
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{
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#ifdef _WIN32
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class ConfigObjectsSharedLock
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{
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public:
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inline ConfigObjectsSharedLock(std::try_to_lock_t)
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{
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}
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constexpr explicit operator bool() const
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{
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return true;
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}
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};
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#else /* _WIN32 */
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/**
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* Waits until all ConfigObjects*Lock-s have vanished. For its lifetime disallows such.
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* Keep an instance alive during reload to forbid runtime config changes!
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* This way Icinga reads a consistent config which doesn't suddenly get runtime-changed.
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*
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* @ingroup remote
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*/
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class ConfigObjectsExclusiveLock
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{
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public:
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ConfigObjectsExclusiveLock();
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private:
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boost::interprocess::scoped_lock<boost::interprocess::interprocess_sharable_mutex> m_Lock;
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};
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/**
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* Waits until the only ConfigObjectsExclusiveLock has vanished (if any). For its lifetime disallows such.
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* Keep an instance alive during runtime config changes to delay a reload (if any)!
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* This way Icinga reads a consistent config which doesn't suddenly get runtime-changed.
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*
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* @ingroup remote
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*/
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class ConfigObjectsSharedLock
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{
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public:
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ConfigObjectsSharedLock(std::try_to_lock_t);
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inline explicit operator bool() const
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{
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return m_Lock.owns();
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}
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private:
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boost::interprocess::sharable_lock<boost::interprocess::interprocess_sharable_mutex> m_Lock;
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};
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#endif /* _WIN32 */
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}
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