mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-13 23:46:40 +00:00
100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#pragma once
|
|
#include <vapours.hpp>
|
|
#include <stratosphere/ddsf/ddsf_types.hpp>
|
|
#include <stratosphere/ddsf/impl/ddsf_for_each.hpp>
|
|
#include <stratosphere/ddsf/ddsf_i_castable.hpp>
|
|
|
|
namespace ams::ddsf {
|
|
|
|
class ISession;
|
|
class IDevice;
|
|
|
|
Result OpenSession(IDevice *device, ISession *session, AccessMode access_mode);
|
|
void CloseSession(ISession *session);
|
|
|
|
class ISession : public ICastable {
|
|
friend Result OpenSession(IDevice *device, ISession *session, AccessMode mode);
|
|
friend void CloseSession(ISession *session);
|
|
public:
|
|
AMS_DDSF_CASTABLE_ROOT_TRAITS(ams::ddsf::IDevice);
|
|
private:
|
|
util::IntrusiveListNode list_node;
|
|
IDevice *device;
|
|
AccessMode access_mode;
|
|
public:
|
|
using ListTraits = util::IntrusiveListMemberTraitsDeferredAssert<&ISession::list_node>;
|
|
using List = typename ListTraits::ListType;
|
|
friend class util::IntrusiveList<ISession, util::IntrusiveListMemberTraitsDeferredAssert<&ISession::list_node>>;
|
|
private:
|
|
void AttachDevice(IDevice *dev, AccessMode mode) {
|
|
AMS_ASSERT(dev != nullptr);
|
|
AMS_ASSERT(!this->IsOpen());
|
|
this->device = dev;
|
|
this->access_mode = mode;
|
|
AMS_ASSERT(this->IsOpen());
|
|
}
|
|
|
|
void DetachDevice() {
|
|
AMS_ASSERT(this->IsOpen());
|
|
this->device = nullptr;
|
|
this->access_mode = AccessMode_None;
|
|
AMS_ASSERT(!this->IsOpen());
|
|
}
|
|
public:
|
|
ISession() : list_node(), device(nullptr), access_mode() { /* ... */ }
|
|
protected:
|
|
~ISession() { this->DetachDevice(); AMS_ASSERT(!this->IsOpen()); }
|
|
public:
|
|
void AddTo(List &list) {
|
|
list.push_back(*this);
|
|
}
|
|
|
|
void RemoveFrom(List list) {
|
|
list.erase(list.iterator_to(*this));
|
|
}
|
|
|
|
bool IsLinkedToList() const {
|
|
return this->list_node.IsLinked();
|
|
}
|
|
|
|
IDevice &GetDevice() {
|
|
AMS_ASSERT(this->IsOpen());
|
|
return *this->device;
|
|
}
|
|
|
|
const IDevice &GetDevice() const {
|
|
AMS_ASSERT(this->IsOpen());
|
|
return *this->device;
|
|
}
|
|
|
|
bool IsOpen() const {
|
|
return this->device != nullptr;
|
|
}
|
|
|
|
bool CheckAccess(AccessMode mode) const {
|
|
AMS_ASSERT(this->IsOpen());
|
|
return ((~this->access_mode) & mode) == 0;
|
|
}
|
|
|
|
bool CheckExclusiveWrite() const {
|
|
return this->CheckAccess(AccessMode_Write) && !this->CheckAccess(AccessMode_Shared);
|
|
}
|
|
};
|
|
static_assert(ISession::ListTraits::IsValid());
|
|
|
|
}
|