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558b914c64
* Rename unity files * Move some modules to new subdirectories * Remove obsolete Visual Studio project files * Remove obsolete coding style and TODO list
142 lines
3.8 KiB
C++
142 lines
3.8 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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namespace beast
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{
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// Manages the list of hooks, and calls
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// whoever is in the list at exit time.
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//
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class AtExitHook::Manager
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{
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public:
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Manager ()
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: m_didStaticDestruction (false)
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{
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}
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static inline Manager& get ()
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{
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return StaticObject <Manager>::get();
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}
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void insert (Item& item)
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{
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ScopedLockType lock (m_mutex);
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// Adding a new AtExitHook during or after the destruction
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// of objects with static storage duration has taken place?
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// Surely something has gone wrong.
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//
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bassert (! m_didStaticDestruction);
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m_list.push_front (item);
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}
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void erase (Item& item)
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{
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ScopedLockType lock (m_mutex);
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m_list.erase (m_list.iterator_to (item));
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}
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private:
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// Called at program exit when destructors for objects
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// with static storage duration are invoked.
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//
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void doStaticDestruction ()
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{
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// In theory this shouldn't be needed (?)
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ScopedLockType lock (m_mutex);
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bassert (! m_didStaticDestruction);
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m_didStaticDestruction = true;
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for (List <Item>::iterator iter (m_list.begin()); iter != m_list.end();)
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{
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Item& item (*iter++);
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AtExitHook* const hook (item.hook ());
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hook->onExit ();
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}
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// Now do the leak checking
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//
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LeakCheckedBase::checkForLeaks ();
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}
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struct StaticDestructor
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{
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~StaticDestructor ()
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{
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Manager::get().doStaticDestruction();
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}
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};
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typedef CriticalSection MutexType;
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typedef MutexType::ScopedLockType ScopedLockType;
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static StaticDestructor s_staticDestructor;
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MutexType m_mutex;
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List <Item> m_list;
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bool m_didStaticDestruction;
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};
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// This is an object with static storage duration.
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// When it gets destroyed, we will call into the Manager to
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// call all of the AtExitHook items in the list.
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//
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AtExitHook::Manager::StaticDestructor AtExitHook::Manager::s_staticDestructor;
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//------------------------------------------------------------------------------
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AtExitHook::Item::Item (AtExitHook* hook)
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: m_hook (hook)
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{
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}
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AtExitHook* AtExitHook::Item::hook ()
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{
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return m_hook;
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}
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//------------------------------------------------------------------------------
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AtExitHook::AtExitHook ()
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: m_item (this)
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{
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#if BEAST_IOS
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// Patrick Dehne:
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// AtExitHook::Manager::insert crashes on iOS
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// if the storage is not accessed before it is used.
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//
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// VFALCO TODO Figure out why and fix it cleanly if needed.
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//
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char* hack = AtExitHook::Manager::s_list.s_storage;
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#endif
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Manager::get().insert (m_item);
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}
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AtExitHook::~AtExitHook ()
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{
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Manager::get().erase (m_item);
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}
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} // beast
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