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construct/include/ircd/js/tracing.h
Jason Volk 61017f4cdc ircd::js: Add tracing support for GC.
ircd::js: Add template constexprs for jsapi handle types.
2016-11-25 19:23:47 -08:00

64 lines
1.7 KiB
C++

/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
*
* 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 is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#define HAVE_IRCD_JS_TRACING_H
namespace ircd {
namespace js {
struct tracing
{
struct thing
{
void *ptr;
jstype type;
template<class T> operator const JS::Heap<T> &() const;
template<class T> operator JS::Heap<T> &();
};
using list = std::list<thing>;
list heap;
void operator()(JSTracer *const &);
tracing();
~tracing() noexcept;
};
template<class T>
tracing::thing::operator JS::Heap<T> &()
{
return *reinterpret_cast<JS::Heap<T> *>(ptr);
}
template<class T>
tracing::thing::operator const JS::Heap<T> &()
const
{
return *reinterpret_cast<const JS::Heap<T> *>(ptr);
}
} // namespace js
} // namespace ircd