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https://gitea.wildfiregames.com/0ad/0ad
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c02a7e1a7b
This upgrade also introduces exact stack rooting (see to the wiki: JSRootingGuide) and fixes problems with moving GC. This allows us to enable generational garbage collection (GGC). Measurements a few months ago have shown a performance improvement of a non-visual replay of around 13.5%. This probably varies quite a bit, but it should be somewhere between 5-20%. Memory usage has also been improved. Check the forum thread for details. Thanks to everyone from the team who helped with this directly or indirectly (review, finding and fixing issues, the required C++11 upgrade, the new autobuilder etc.)! Also thanks to the SpiderMonkey developers who helped on the #jsapi channel or elsewhere! Fixes #2462, #2415, #2428, #2684, #1374 Refs #2973, #2669 This was SVN commit r16214.
86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
/* Copyright (C) 2014 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_SCRIPTVAL
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#define INCLUDED_SCRIPTVAL
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#include "ScriptTypes.h"
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#include <boost/shared_ptr.hpp>
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/**
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* A default constructible wrapper around JS::PersistentRootedValue
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*
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* It's a very common case that we need to store JS::Values on the heap as
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* class members and only need them conditionally or want to initialize
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* them after the constructor because we don't have the runtime available yet.
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* Use it in these cases, but prefer to use JS::PersistentRootedValue directly
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* if initializing it with a runtime/context in the constructor isn't a problem.
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*/
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template <typename T>
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class DefPersistentRooted
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{
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public:
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DefPersistentRooted()
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{
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}
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DefPersistentRooted(JSRuntime* rt)
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{
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m_Val.reset(new JS::PersistentRooted<T>(rt));
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}
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DefPersistentRooted(JSRuntime* rt, JS::HandleValue val)
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{
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m_Val.reset(new JS::PersistentRooted<T>(rt, val));
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}
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DefPersistentRooted(JSContext* cx, JS::Handle<T> val)
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{
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m_Val.reset(new JS::PersistentRooted<T>(cx, val));
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}
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void clear()
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{
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m_Val = nullptr;
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}
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inline bool uninitialized()
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{
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return m_Val == nullptr;
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}
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inline JS::PersistentRooted<T>& get() const
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{
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ENSURE(m_Val);
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return *m_Val;
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}
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inline void set(JSRuntime* rt, T val)
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{
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m_Val.reset(new JS::PersistentRooted<T>(rt, val));
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}
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inline void set(JSContext* cx, T val)
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{
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m_Val.reset(new JS::PersistentRooted<T>(cx, val));
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}
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private:
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std::unique_ptr<JS::PersistentRooted<T> > m_Val;
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};
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#endif // INCLUDED_SCRIPTVAL
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