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Atmosphere/libraries/libmesosphere/include/mesosphere/kern_k_session_request.hpp
2020-12-18 13:31:01 -08:00

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/*
* 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_k_writable_event.hpp>
#include <mesosphere/kern_k_thread.hpp>
#include <mesosphere/kern_k_process.hpp>
#include <mesosphere/kern_k_memory_block.hpp>
namespace ams::kern {
class KSessionRequest final : public KSlabAllocated<KSessionRequest>, public KAutoObject, public util::IntrusiveListBaseNode<KSessionRequest> {
MESOSPHERE_AUTOOBJECT_TRAITS(KSessionRequest, KAutoObject);
public:
class SessionMappings {
private:
static constexpr size_t NumStaticMappings = 8;
class Mapping {
private:
KProcessAddress m_client_address;
KProcessAddress m_server_address;
size_t m_size;
KMemoryState m_state;
public:
constexpr void Set(KProcessAddress c, KProcessAddress s, size_t sz, KMemoryState st) {
m_client_address = c;
m_server_address = s;
m_size = sz;
m_state = st;
}
constexpr ALWAYS_INLINE KProcessAddress GetClientAddress() const { return m_client_address; }
constexpr ALWAYS_INLINE KProcessAddress GetServerAddress() const { return m_server_address; }
constexpr ALWAYS_INLINE size_t GetSize() const { return m_size; }
constexpr ALWAYS_INLINE KMemoryState GetMemoryState() const { return m_state; }
};
private:
Mapping m_static_mappings[NumStaticMappings];
Mapping *m_mappings;
u8 m_num_send;
u8 m_num_recv;
u8 m_num_exch;
public:
constexpr explicit SessionMappings() : m_static_mappings(), m_mappings(), m_num_send(), m_num_recv(), m_num_exch() { /* ... */ }
void Initialize() { /* ... */ }
void Finalize();
constexpr ALWAYS_INLINE size_t GetSendCount() const { return m_num_send; }
constexpr ALWAYS_INLINE size_t GetReceiveCount() const { return m_num_recv; }
constexpr ALWAYS_INLINE size_t GetExchangeCount() const { return m_num_exch; }
Result PushSend(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state);
Result PushReceive(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state);
Result PushExchange(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state);
constexpr ALWAYS_INLINE KProcessAddress GetSendClientAddress(size_t i) const { return GetSendMapping(i).GetClientAddress(); }
constexpr ALWAYS_INLINE KProcessAddress GetSendServerAddress(size_t i) const { return GetSendMapping(i).GetServerAddress(); }
constexpr ALWAYS_INLINE size_t GetSendSize(size_t i) const { return GetSendMapping(i).GetSize(); }
constexpr ALWAYS_INLINE KMemoryState GetSendMemoryState(size_t i) const { return GetSendMapping(i).GetMemoryState(); }
constexpr ALWAYS_INLINE KProcessAddress GetReceiveClientAddress(size_t i) const { return GetReceiveMapping(i).GetClientAddress(); }
constexpr ALWAYS_INLINE KProcessAddress GetReceiveServerAddress(size_t i) const { return GetReceiveMapping(i).GetServerAddress(); }
constexpr ALWAYS_INLINE size_t GetReceiveSize(size_t i) const { return GetReceiveMapping(i).GetSize(); }
constexpr ALWAYS_INLINE KMemoryState GetReceiveMemoryState(size_t i) const { return GetReceiveMapping(i).GetMemoryState(); }
constexpr ALWAYS_INLINE KProcessAddress GetExchangeClientAddress(size_t i) const { return GetExchangeMapping(i).GetClientAddress(); }
constexpr ALWAYS_INLINE KProcessAddress GetExchangeServerAddress(size_t i) const { return GetExchangeMapping(i).GetServerAddress(); }
constexpr ALWAYS_INLINE size_t GetExchangeSize(size_t i) const { return GetExchangeMapping(i).GetSize(); }
constexpr ALWAYS_INLINE KMemoryState GetExchangeMemoryState(size_t i) const { return GetExchangeMapping(i).GetMemoryState(); }
private:
Result PushMap(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state, size_t index);
constexpr ALWAYS_INLINE const Mapping &GetSendMapping(size_t i) const {
MESOSPHERE_ASSERT(i < m_num_send);
const size_t index = i;
if (index < NumStaticMappings) {
return m_static_mappings[index];
} else {
return m_mappings[index - NumStaticMappings];
}
}
constexpr ALWAYS_INLINE const Mapping &GetReceiveMapping(size_t i) const {
MESOSPHERE_ASSERT(i < m_num_recv);
const size_t index = m_num_send + i;
if (index < NumStaticMappings) {
return m_static_mappings[index];
} else {
return m_mappings[index - NumStaticMappings];
}
}
constexpr ALWAYS_INLINE const Mapping &GetExchangeMapping(size_t i) const {
MESOSPHERE_ASSERT(i < m_num_exch);
const size_t index = m_num_send + m_num_recv + i;
if (index < NumStaticMappings) {
return m_static_mappings[index];
} else {
return m_mappings[index - NumStaticMappings];
}
}
};
private:
SessionMappings m_mappings;
KThread *m_thread;
KProcess *m_server;
KWritableEvent *m_event;
uintptr_t m_address;
size_t m_size;
public:
constexpr KSessionRequest() : m_mappings(), m_thread(), m_server(), m_event(), m_address(), m_size() { /* ... */ }
virtual ~KSessionRequest() { /* ... */ }
static KSessionRequest *Create() {
KSessionRequest *req = KSessionRequest::Allocate();
if (req != nullptr) {
KAutoObject::Create(req);
}
return req;
}
virtual void Destroy() override {
this->Finalize();
KSessionRequest::Free(this);
}
void Initialize(KWritableEvent *event, uintptr_t address, size_t size) {
m_mappings.Initialize();
m_thread = std::addressof(GetCurrentThread());
m_event = event;
m_address = address;
m_size = size;
m_thread->Open();
if (m_event != nullptr) {
m_event->Open();
}
}
virtual void Finalize() override {
m_mappings.Finalize();
if (m_thread) {
m_thread->Close();
}
if (m_event) {
m_event->Close();
}
if (m_server) {
m_server->Close();
}
}
static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
constexpr ALWAYS_INLINE KThread *GetThread() const { return m_thread; }
constexpr ALWAYS_INLINE KWritableEvent *GetEvent() const { return m_event; }
constexpr ALWAYS_INLINE uintptr_t GetAddress() const { return m_address; }
constexpr ALWAYS_INLINE size_t GetSize() const { return m_size; }
constexpr ALWAYS_INLINE KProcess *GetServerProcess() const { return m_server; }
void ALWAYS_INLINE SetServerProcess(KProcess *process) {
m_server = process;
m_server->Open();
}
constexpr ALWAYS_INLINE void ClearThread() { m_thread = nullptr; }
constexpr ALWAYS_INLINE void ClearEvent() { m_event = nullptr; }
constexpr ALWAYS_INLINE size_t GetSendCount() const { return m_mappings.GetSendCount(); }
constexpr ALWAYS_INLINE size_t GetReceiveCount() const { return m_mappings.GetReceiveCount(); }
constexpr ALWAYS_INLINE size_t GetExchangeCount() const { return m_mappings.GetExchangeCount(); }
ALWAYS_INLINE Result PushSend(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
return m_mappings.PushSend(client, server, size, state);
}
ALWAYS_INLINE Result PushReceive(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
return m_mappings.PushReceive(client, server, size, state);
}
ALWAYS_INLINE Result PushExchange(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
return m_mappings.PushExchange(client, server, size, state);
}
constexpr ALWAYS_INLINE KProcessAddress GetSendClientAddress(size_t i) const { return m_mappings.GetSendClientAddress(i); }
constexpr ALWAYS_INLINE KProcessAddress GetSendServerAddress(size_t i) const { return m_mappings.GetSendServerAddress(i); }
constexpr ALWAYS_INLINE size_t GetSendSize(size_t i) const { return m_mappings.GetSendSize(i); }
constexpr ALWAYS_INLINE KMemoryState GetSendMemoryState(size_t i) const { return m_mappings.GetSendMemoryState(i); }
constexpr ALWAYS_INLINE KProcessAddress GetReceiveClientAddress(size_t i) const { return m_mappings.GetReceiveClientAddress(i); }
constexpr ALWAYS_INLINE KProcessAddress GetReceiveServerAddress(size_t i) const { return m_mappings.GetReceiveServerAddress(i); }
constexpr ALWAYS_INLINE size_t GetReceiveSize(size_t i) const { return m_mappings.GetReceiveSize(i); }
constexpr ALWAYS_INLINE KMemoryState GetReceiveMemoryState(size_t i) const { return m_mappings.GetReceiveMemoryState(i); }
constexpr ALWAYS_INLINE KProcessAddress GetExchangeClientAddress(size_t i) const { return m_mappings.GetExchangeClientAddress(i); }
constexpr ALWAYS_INLINE KProcessAddress GetExchangeServerAddress(size_t i) const { return m_mappings.GetExchangeServerAddress(i); }
constexpr ALWAYS_INLINE size_t GetExchangeSize(size_t i) const { return m_mappings.GetExchangeSize(i); }
constexpr ALWAYS_INLINE KMemoryState GetExchangeMemoryState(size_t i) const { return m_mappings.GetExchangeMemoryState(i); }
};
}