mirror of
https://github.com/matrix-construct/construct
synced 2024-11-27 01:02:46 +01:00
151 lines
3.2 KiB
C++
151 lines
3.2 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 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. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_JS_ROOT_H
|
|
|
|
namespace ircd {
|
|
namespace js {
|
|
|
|
template<class T>
|
|
using handle = typename T::handle;
|
|
|
|
// This conversion is missing in the jsapi. Is this object not gc rooted? Can it not have a handle?
|
|
template<class T>
|
|
JS::Handle<T>
|
|
operator&(const JS::Heap<T> &h)
|
|
{
|
|
return JS::Handle<T>::fromMarkedLocation(h.address());
|
|
}
|
|
|
|
// This conversion is missing in the jsapi. Is this object not gc rooted? Can it not have a handle?
|
|
template<class T>
|
|
JS::MutableHandle<T>
|
|
operator&(JS::Heap<T> &h)
|
|
{
|
|
const auto ptr(const_cast<T *>(h.address()));
|
|
return JS::MutableHandle<T>::fromMarkedLocation(ptr);
|
|
}
|
|
|
|
// This conversion is missing in the jsapi. Is this object not gc rooted? Can it not have a handle?
|
|
template<class T>
|
|
JS::Handle<T>
|
|
operator&(const JS::TenuredHeap<T> &h)
|
|
{
|
|
return JS::Handle<T>::fromMarkedLocation(h.address());
|
|
}
|
|
|
|
// This conversion is missing in the jsapi. Is this object not gc rooted? Can it not have a handle?
|
|
template<class T>
|
|
JS::MutableHandle<T>
|
|
operator&(JS::TenuredHeap<T> &h)
|
|
{
|
|
const auto ptr(const_cast<T *>(h.address()));
|
|
return JS::MutableHandle<T>::fromMarkedLocation(ptr);
|
|
}
|
|
|
|
template<class T>
|
|
struct root
|
|
:JS::Heap<T>
|
|
{
|
|
using value_type = T;
|
|
using base_type = JS::Heap<T>;
|
|
using handle = JS::Handle<T>;
|
|
using handle_mutable = JS::MutableHandle<T>;
|
|
using type = root<value_type>;
|
|
|
|
operator handle() const
|
|
{
|
|
const auto ptr(this->address());
|
|
return JS::Handle<T>::fromMarkedLocation(ptr);
|
|
}
|
|
|
|
operator handle_mutable()
|
|
{
|
|
const auto ptr(this->address());
|
|
return JS::MutableHandle<T>::fromMarkedLocation(ptr);
|
|
}
|
|
|
|
private:
|
|
tracing::list::iterator tracing_it;
|
|
|
|
tracing::list::iterator add(base_type *const &ptr)
|
|
{
|
|
return cx->tracing.heap.emplace(end(cx->tracing.heap), tracing::thing { ptr, js::type<T>() });
|
|
}
|
|
|
|
void del(const tracing::list::iterator &tracing_it)
|
|
{
|
|
if(tracing_it != end(cx->tracing.heap))
|
|
{
|
|
const void *ptr = tracing_it->ptr;
|
|
cx->tracing.heap.erase(tracing_it);
|
|
}
|
|
}
|
|
|
|
public:
|
|
root(const handle &h)
|
|
:base_type{h.get()}
|
|
,tracing_it{add(this)}
|
|
{
|
|
}
|
|
|
|
root(const handle_mutable &h)
|
|
:base_type{h.get()}
|
|
,tracing_it{add(this)}
|
|
{
|
|
}
|
|
|
|
explicit root(const T &t)
|
|
:base_type{t}
|
|
,tracing_it{add(this)}
|
|
{
|
|
}
|
|
|
|
root()
|
|
:base_type{}
|
|
,tracing_it{add(this)}
|
|
{
|
|
}
|
|
|
|
root(root &&other) noexcept
|
|
:base_type{other.get()}
|
|
,tracing_it{std::move(other.tracing_it)}
|
|
{
|
|
other.tracing_it = end(cx->tracing.heap);
|
|
tracing_it->ptr = static_cast<base_type *>(this);
|
|
}
|
|
|
|
root(const root &other)
|
|
:base_type{other.get()}
|
|
,tracing_it{add(this)}
|
|
{
|
|
}
|
|
|
|
root &operator=(root &&other) noexcept
|
|
{
|
|
base_type::operator=(std::move(other.get()));
|
|
return *this;
|
|
}
|
|
|
|
root &operator=(const root &other)
|
|
{
|
|
base_type::operator=(other.get());
|
|
return *this;
|
|
}
|
|
|
|
~root() noexcept
|
|
{
|
|
del(tracing_it);
|
|
}
|
|
};
|
|
|
|
} // namespace js
|
|
} // namespace ircd
|