Dirk Zimoch
1b65309ec9
non - DLL-interface class 'class_1' used as base for DLL-interface class 'class_2'
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/* destroyable.h */
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/*
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* Copyright information and license terms for this software can be
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* found in the file LICENSE that is included with the distribution
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*/
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/**
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* @author mse
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*/
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#ifndef DESTROYABLE_H
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#define DESTROYABLE_H
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#include <compilerDependencies.h>
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#include <pv/sharedPtr.h>
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#include <shareLib.h>
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namespace epics { namespace pvAccess {
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/**
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* @brief Instance declaring destroy method.
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*/
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class epicsShareClass Destroyable {
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public:
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POINTER_DEFINITIONS(Destroyable);
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/**
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* Destroy this instance.
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*/
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virtual void destroy() {};
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protected:
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virtual ~Destroyable() {}
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public:
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/** for use with shared_ptr<> when wrapping
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*
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@code
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shared_ptr<foo> inner(new foo),
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outer(inner.get, Destroyable::cleaner(inner));
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@endcode
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@warning Do not use this trick in combination with enable_shared_from_this
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as it is _undefined_ whether the hidden weak_ptr will be the original
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or wrapped reference.
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*/
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class cleaner {
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Destroyable::shared_pointer ptr;
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public:
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cleaner(const Destroyable::shared_pointer& ptr) :ptr(ptr) {}
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void operator()(Destroyable*) {
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Destroyable::shared_pointer P;
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P.swap(ptr);
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P->destroy();
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}
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};
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};
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}}
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namespace epics { namespace pvData {
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typedef ::epics::pvAccess::Destroyable Destroyable EPICS_DEPRECATED;
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}}
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#endif /* DESTROYABLE_H */
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