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hw: turn Kernel_object into Genode::Constructible

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Fix #3531
This commit is contained in:
Stefan Kalkowski
2019-10-16 15:07:11 +02:00
committed by Christian Helmuth
parent 3e3fb63863
commit f6435d91fc
30 changed files with 304 additions and 327 deletions
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27
repos/base-hw/src/core/object.h
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@ -15,7 +15,7 @@
#define _CORE__OBJECT_H_
/* Genode includes */
#include <util/construct_at.h>
#include <util/reconstructible.h>
/* base-internal includes */
#include <base/internal/capability_space.h>
@ -35,13 +35,8 @@ namespace Genode {
template <typename T>
class Genode::Kernel_object
class Genode::Kernel_object : public Genode::Constructible<Kernel::Core_object<T>>
{
private:
uint8_t _data[sizeof(Kernel::Core_object<T>)]
__attribute__((aligned(sizeof(addr_t))));
protected:
Untyped_capability _cap { };
@ -55,15 +50,17 @@ class Genode::Kernel_object
*/
template <typename... ARGS>
Kernel_object(bool syscall, ARGS &&... args)
: _cap(Capability_space::import(syscall ? T::syscall_create(&_data, args...)
: _cap(Capability_space::import(syscall ? T::syscall_create(*this, args...)
: Kernel::cap_id_invalid()))
{
if (!syscall) construct_at<T>(&_data, args...);
if (!syscall) Genode::Constructible<Kernel::Core_object<T>>::construct(args...);
}
~Kernel_object() { T::syscall_destroy(kernel_object()); }
T * kernel_object() { return reinterpret_cast<T*>(_data); }
~Kernel_object()
{
if (Genode::Constructible<Kernel::Core_object<T>>::constructed())
T::syscall_destroy(*this);
}
Untyped_capability cap() { return _cap; }
@ -73,8 +70,10 @@ class Genode::Kernel_object
template <typename... ARGS>
bool create(ARGS &&... args)
{
if (_cap.valid()) return false;
_cap = Capability_space::import(T::syscall_create(&_data, args...));
if (Genode::Constructible<Kernel::Core_object<T>>::constructed())
return false;
_cap = Capability_space::import(T::syscall_create(*this, args...));
return _cap.valid();
}
};