Atmosphere/libraries/libmesosphere/include/mesosphere/kern_k_shared_memory.hpp

60 lines
2.5 KiB
C++
Raw Normal View History

2020-02-07 19:51:58 +00:00
/*
* 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 <mesosphere/kern_common.hpp>
#include <mesosphere/kern_k_auto_object.hpp>
#include <mesosphere/kern_slab_helpers.hpp>
#include <mesosphere/kern_select_page_table.hpp>
2020-02-07 19:51:58 +00:00
namespace ams::kern {
class KProcess;
class KResourceLimit;
2020-02-07 19:51:58 +00:00
class KSharedMemory final : public KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList> {
MESOSPHERE_AUTOOBJECT_TRAITS(KSharedMemory, KAutoObject);
private:
KPageGroup page_group;
KResourceLimit *resource_limit;
u64 owner_process_id;
ams::svc::MemoryPermission owner_perm;
ams::svc::MemoryPermission remote_perm;
bool is_initialized;
public:
explicit KSharedMemory()
: page_group(std::addressof(Kernel::GetBlockInfoManager())), resource_limit(nullptr), owner_process_id(std::numeric_limits<u64>::max()),
owner_perm(ams::svc::MemoryPermission_None), remote_perm(ams::svc::MemoryPermission_None), is_initialized(false)
{
/* ... */
}
virtual ~KSharedMemory() { /* ... */ }
Result Initialize(KProcess *owner, size_t size, ams::svc::MemoryPermission own_perm, ams::svc::MemoryPermission rem_perm);
virtual void Finalize() override;
virtual bool IsInitialized() const override { return this->is_initialized; }
2020-08-21 00:29:10 +00:00
static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
Result Map(KProcessPageTable *table, KProcessAddress address, size_t size, KProcess *process, ams::svc::MemoryPermission map_perm);
Result Unmap(KProcessPageTable *table, KProcessAddress address, size_t size, KProcess *process);
u64 GetOwnerProcessId() const { return this->owner_process_id; }
size_t GetSize() const { return this->page_group.GetNumPages() * PageSize; }
2020-02-07 19:51:58 +00:00
};
}