193 lines
3.6 KiB
C++
193 lines
3.6 KiB
C++
#include <kernel/object.h>
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#include <kernel/pd.h>
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#include <kernel/kernel.h>
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#include <util/construct_at.h>
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using namespace Kernel;
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/************
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** Object **
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************/
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Object::Object(Thread &obj)
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:
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_type { THREAD },
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_obj { (void *)&obj }
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{ }
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Object::Object(Irq &obj)
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:
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_type { IRQ },
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_obj { (void *)&obj }
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{ }
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Object::Object(Signal_receiver &obj)
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:
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_type { SIGNAL_RECEIVER },
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_obj { (void *)&obj }
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{ }
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Object::Object(Signal_context &obj)
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:
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_type { SIGNAL_CONTEXT },
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_obj { (void *)&obj }
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{ }
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Object::Object(Pd &obj)
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:
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_type { PD },
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_obj { (void *)&obj }
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{ }
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Object::Object(Vm &obj)
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:
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_type { VM },
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_obj { (void *)&obj }
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{ }
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Object::~Object()
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{
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for (Object_identity * oi = first(); oi; oi = first())
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oi->invalidate();
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}
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namespace Kernel {
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template <> Pd *Object::obj<Pd>() const
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{
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if (_type != PD) {
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return nullptr; }
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return reinterpret_cast<Pd *>(_obj);
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}
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template <> Irq *Object::obj<Irq>() const
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{
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if (_type != IRQ) {
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return nullptr; }
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return reinterpret_cast<Irq *>(_obj);
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}
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template <> Signal_receiver *Object::obj<Signal_receiver>() const
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{
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if (_type != SIGNAL_RECEIVER) {
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return nullptr; }
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return reinterpret_cast<Signal_receiver *>(_obj);
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}
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template <> Signal_context *Object::obj<Signal_context>() const
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{
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if (_type != SIGNAL_CONTEXT) {
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return nullptr; }
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return reinterpret_cast<Signal_context *>(_obj);
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}
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template <> Thread *Object::obj<Thread>() const
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{
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if (_type != THREAD) {
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return nullptr; }
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return reinterpret_cast<Thread *>(_obj);
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}
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template <> Vm *Object::obj<Vm>() const
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{
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if (_type != VM) {
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return nullptr; }
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return reinterpret_cast<Vm *>(_obj);
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}
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}
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/*********************
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** Object_identity **
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*********************/
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void Object_identity::invalidate()
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{
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for (Object_identity_reference * oir = first(); oir; oir = first())
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oir->invalidate();
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if (_object) {
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_object->remove(this);
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_object = nullptr;
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}
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}
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Object_identity::Object_identity(Object & object)
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: _object(&object) { _object->insert(this); }
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Object_identity::~Object_identity() { invalidate(); }
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/*******************************
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** Object_identity_reference **
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*******************************/
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Object_identity_reference *
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Object_identity_reference::find(Pd &pd)
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{
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if (!_identity) return nullptr;
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for (Object_identity_reference * oir = _identity->first();
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oir; oir = oir->next())
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if (&pd == &(oir->_pd)) return oir;
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return nullptr;
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}
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Object_identity_reference *
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Object_identity_reference::find(capid_t capid)
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{
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using Avl_node_base = Genode::Avl_node<Object_identity_reference>;
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if (capid == _capid) return this;
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Object_identity_reference * subtree =
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Avl_node_base::child(capid > _capid);
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return (subtree) ? subtree->find(capid) : nullptr;
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}
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Object_identity_reference * Object_identity_reference::factory(void * dst,
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Pd & pd)
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{
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using namespace Genode;
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return !_identity ?
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nullptr : construct_at<Object_identity_reference>(dst, _identity, pd);
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}
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void Object_identity_reference::invalidate() {
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if (_identity) _identity->remove(this);
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_identity = nullptr;
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}
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Object_identity_reference::Object_identity_reference(Object_identity *oi,
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Pd &pd)
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: _capid(pd.capid_alloc().alloc()), _identity(oi), _pd(pd), _in_utcbs(0)
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{
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if (_identity) _identity->insert(this);
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_pd.cap_tree().insert(this);
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}
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Object_identity_reference::~Object_identity_reference()
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{
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invalidate();
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_pd.cap_tree().remove(this);
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_pd.capid_alloc().free(_capid);
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}
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Object_identity_reference * Object_identity_reference_tree::find(capid_t id) {
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return (first()) ? first()->find(id) : nullptr; }
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