mirror of
https://github.com/genodelabs/genode.git
synced 2025-06-18 07:08:18 +00:00
2e6dd010ae
The namespace draws a clear line between the base library and the core component. It is declared at the new core-local header <types.h>, which is expected to be included by all code of the core component. It is thereby a natural place for kernel-agnostic general types like commonly used C++ utilities. Fixes #4777
92 lines
1.9 KiB
C++
92 lines
1.9 KiB
C++
/*
|
|
* \brief Kernel object handling in core
|
|
* \author Stefan Kalkowski
|
|
* \date 2015-04-21
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2015-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _CORE__OBJECT_H_
|
|
#define _CORE__OBJECT_H_
|
|
|
|
/* base-internal includes */
|
|
#include <base/internal/capability_space.h>
|
|
|
|
/* core includes */
|
|
#include <types.h>
|
|
|
|
/* base-hw includes */
|
|
#include <kernel/interface.h>
|
|
#include <kernel/object.h>
|
|
|
|
namespace Core { template <typename T> class Kernel_object; }
|
|
|
|
|
|
/**
|
|
* Represents a kernel object in core
|
|
*
|
|
* \param T type of the kernel object
|
|
*/
|
|
template <typename T>
|
|
class Core::Kernel_object : public Constructible<Kernel::Core_object<T>>
|
|
{
|
|
protected:
|
|
|
|
Untyped_capability _cap { };
|
|
|
|
public:
|
|
|
|
enum Called_from_core { CALLED_FROM_CORE };
|
|
enum Called_from_kernel { CALLED_FROM_KERNEL };
|
|
|
|
Kernel_object() {}
|
|
|
|
/**
|
|
* Creates a kernel object via a syscall
|
|
*/
|
|
template <typename... ARGS>
|
|
Kernel_object(Called_from_core, ARGS &&... args)
|
|
:
|
|
_cap(Capability_space::import(T::syscall_create(*this, args...)))
|
|
{ }
|
|
|
|
/**
|
|
* Creates a kernel object directly
|
|
*/
|
|
template <typename... ARGS>
|
|
Kernel_object(Called_from_kernel, ARGS &&... args)
|
|
:
|
|
_cap(Capability_space::import(Kernel::cap_id_invalid()))
|
|
{
|
|
Constructible<Kernel::Core_object<T>>::construct(args...);
|
|
}
|
|
|
|
~Kernel_object()
|
|
{
|
|
if (Constructible<Kernel::Core_object<T>>::constructed())
|
|
T::syscall_destroy(*this);
|
|
}
|
|
|
|
Untyped_capability cap() { return _cap; }
|
|
|
|
/**
|
|
* Create the kernel object explicitely via this function
|
|
*/
|
|
template <typename... ARGS>
|
|
bool create(ARGS &&... args)
|
|
{
|
|
if (Constructible<Kernel::Core_object<T>>::constructed())
|
|
return false;
|
|
|
|
_cap = Capability_space::import(T::syscall_create(*this, args...));
|
|
return _cap.valid();
|
|
}
|
|
};
|
|
|
|
#endif /* _CORE__OBJECT_H_ */
|