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rippled/modules/beast_core/time/AtExitHook.h
2013-09-12 10:55:24 -07:00

89 lines
2.3 KiB
C++

//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_CORE_ATEXITHOOK_H_INCLUDED
#define BEAST_CORE_ATEXITHOOK_H_INCLUDED
/** Hook for performing activity on program exit.
These hooks execute when objects with static storage duration are
destroyed. The hooks are called in the reverse order that they were
created.
To use, derive your class from AtExitHook and implement onExit.
Alternatively, add AtExitMemberHook as a data member of your class and
then provide your own onExit function with this signature:
@code
void onExit ()
@endcode
@see AtExitMemberHook
*/
/** @{ */
class AtExitHook
{
protected:
AtExitHook ();
virtual ~AtExitHook ();
protected:
/** Called at program exit. */
virtual void onExit () = 0;
private:
class Manager;
class Item : public List <Item>::Node
{
public:
explicit Item (AtExitHook* hook);
AtExitHook* hook ();
private:
AtExitHook* m_hook;
};
Item m_item;
};
/** Helper for utilizing the AtExitHook as a data member.
*/
template <class Object>
class AtExitMemberHook : public AtExitHook
{
public:
explicit AtExitMemberHook (Object* owner) : m_owner (owner)
{
}
private:
void onExit ()
{
m_owner->onExit ();
}
Object* m_owner;
};
/** @} */
#endif