mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-25 11:46:05 +00:00
652 lines
32 KiB
C++
652 lines
32 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/tipc/tipc_common.hpp>
|
|
#include <stratosphere/tipc/tipc_service_object.hpp>
|
|
#include <stratosphere/tipc/tipc_object_manager.hpp>
|
|
|
|
namespace ams::tipc {
|
|
|
|
template<size_t NumSessions, typename Interface, typename Impl, template<typename, size_t> typename _Allocator>
|
|
struct PortMeta {
|
|
static constexpr inline size_t MaxSessions = NumSessions;
|
|
|
|
using ServiceObject = tipc::ServiceObject<Interface, Impl>;
|
|
|
|
using Allocator = _Allocator<ServiceObject, NumSessions>;
|
|
};
|
|
|
|
struct DummyDeferralManager{
|
|
struct Key{};
|
|
};
|
|
|
|
class PortManagerInterface {
|
|
public:
|
|
virtual Result ProcessRequest(WaitableObject &object) = 0;
|
|
};
|
|
|
|
template<typename DeferralManagerType, size_t ThreadStackSize, typename... PortInfos>
|
|
class ServerManagerImpl {
|
|
private:
|
|
static constexpr inline size_t NumPorts = sizeof...(PortInfos);
|
|
static constexpr inline size_t MaxSessions = (PortInfos::MaxSessions + ...);
|
|
|
|
/* Verify that it's possible to service this many sessions, with our port manager count. */
|
|
static_assert(MaxSessions <= NumPorts * svc::ArgumentHandleCountMax);
|
|
|
|
static_assert(util::IsAligned(ThreadStackSize, os::ThreadStackAlignment));
|
|
alignas(os::ThreadStackAlignment) static constinit inline u8 s_port_stacks[ThreadStackSize * (NumPorts - 1)];
|
|
|
|
static constexpr inline bool IsDeferralSupported = !std::same_as<DeferralManagerType, DummyDeferralManager>;
|
|
using ResumeKey = typename DeferralManagerType::Key;
|
|
|
|
static constexpr ALWAYS_INLINE uintptr_t ConvertKeyToMessage(ResumeKey key) {
|
|
static_assert(sizeof(key) <= sizeof(uintptr_t));
|
|
static_assert(std::is_trivial<ResumeKey>::value);
|
|
|
|
if constexpr (sizeof(key) == sizeof(uintptr_t)) {
|
|
return std::bit_cast<uintptr_t>(key);
|
|
} else {
|
|
uintptr_t converted = 0;
|
|
std::memcpy(std::addressof(converted), std::addressof(key), sizeof(key));
|
|
return converted;
|
|
}
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE ResumeKey ConvertMessageToKey(uintptr_t message) {
|
|
static_assert(sizeof(ResumeKey) <= sizeof(uintptr_t));
|
|
static_assert(std::is_trivial<ResumeKey>::value);
|
|
|
|
if constexpr (sizeof(ResumeKey) == sizeof(uintptr_t)) {
|
|
return std::bit_cast<ResumeKey>(message);
|
|
} else {
|
|
ResumeKey converted = {};
|
|
std::memcpy(std::addressof(converted), std::addressof(message), sizeof(converted));
|
|
return converted;
|
|
}
|
|
}
|
|
|
|
template<size_t Ix> requires (Ix < NumPorts)
|
|
static constexpr inline size_t SessionsPerPortManager = (Ix == NumPorts - 1) ? ((MaxSessions / NumPorts) + MaxSessions % NumPorts)
|
|
: ((MaxSessions / NumPorts));
|
|
|
|
template<size_t Ix> requires (Ix < NumPorts)
|
|
using PortInfo = typename std::tuple_element<Ix, std::tuple<PortInfos...>>::type;
|
|
public:
|
|
class PortManagerBase : public PortManagerInterface {
|
|
public:
|
|
enum MessageType : u8 {
|
|
MessageType_AddSession = 0,
|
|
MessageType_TriggerResume = 1,
|
|
};
|
|
protected:
|
|
s32 m_id;
|
|
std::atomic<s32> m_num_sessions;
|
|
s32 m_port_number;
|
|
os::WaitableManagerType m_waitable_manager;
|
|
DeferralManagerType m_deferral_manager;
|
|
os::MessageQueueType m_message_queue;
|
|
os::WaitableHolderType m_message_queue_holder;
|
|
uintptr_t m_message_queue_storage[MaxSessions];
|
|
ObjectManagerBase *m_object_manager;
|
|
ServerManagerImpl *m_server_manager;
|
|
public:
|
|
PortManagerBase() : m_id(), m_num_sessions(), m_port_number(), m_waitable_manager(), m_deferral_manager(), m_message_queue(), m_message_queue_holder(), m_message_queue_storage(), m_object_manager(), m_server_manager() {
|
|
/* Setup our message queue. */
|
|
os::InitializeMessageQueue(std::addressof(m_message_queue), m_message_queue_storage, util::size(m_message_queue_storage));
|
|
os::InitializeWaitableHolder(std::addressof(m_message_queue_holder), std::addressof(m_message_queue), os::MessageQueueWaitType::ForNotEmpty);
|
|
}
|
|
|
|
constexpr s32 GetPortIndex() const {
|
|
return m_port_number;
|
|
}
|
|
|
|
s32 GetSessionCount() const {
|
|
return m_num_sessions;
|
|
}
|
|
|
|
ObjectManagerBase *GetObjectManager() const {
|
|
return m_object_manager;
|
|
}
|
|
|
|
void InitializeBase(s32 id, ServerManagerImpl *sm, ObjectManagerBase *manager) {
|
|
/* Set our id. */
|
|
m_id = id;
|
|
|
|
/* Set our server manager. */
|
|
m_server_manager = sm;
|
|
|
|
/* Reset our session count. */
|
|
m_num_sessions = 0;
|
|
|
|
/* Initialize our waitable manager. */
|
|
os::InitializeWaitableManager(std::addressof(m_waitable_manager));
|
|
os::LinkWaitableHolder(std::addressof(m_waitable_manager), std::addressof(m_message_queue_holder));
|
|
|
|
/* Initialize our object manager. */
|
|
m_object_manager = manager;
|
|
}
|
|
|
|
void RegisterPort(s32 index, svc::Handle port_handle) {
|
|
/* Set our port number. */
|
|
this->m_port_number = index;
|
|
|
|
/* Create a waitable object for the port. */
|
|
tipc::WaitableObject object;
|
|
|
|
/* Setup the object. */
|
|
object.InitializeAsPort(port_handle);
|
|
|
|
/* Register the object. */
|
|
m_object_manager->AddObject(object);
|
|
}
|
|
|
|
virtual Result ProcessRequest(WaitableObject &object) override {
|
|
/* Process the request, this must succeed because we succeeded when deferring earlier. */
|
|
R_ABORT_UNLESS(m_object_manager->ProcessRequest(object));
|
|
|
|
/* NOTE: We support nested deferral, where Nintendo does not. */
|
|
if constexpr (IsDeferralSupported) {
|
|
R_UNLESS(!PortManagerBase::IsRequestDeferred(), tipc::ResultRequestDeferred());
|
|
}
|
|
|
|
/* Reply to the request. */
|
|
return m_object_manager->Reply(object.GetHandle());
|
|
}
|
|
|
|
Result ReplyAndReceive(os::WaitableHolderType **out_holder, WaitableObject *out_object, svc::Handle reply_target) {
|
|
return m_object_manager->ReplyAndReceive(out_holder, out_object, reply_target, std::addressof(m_waitable_manager));
|
|
}
|
|
|
|
void AddSession(svc::Handle session_handle, tipc::ServiceObjectBase *service_object) {
|
|
/* Create a waitable object for the session. */
|
|
tipc::WaitableObject object;
|
|
|
|
/* Setup the object. */
|
|
object.InitializeAsSession(session_handle, true, service_object);
|
|
|
|
/* Register the object. */
|
|
m_object_manager->AddObject(object);
|
|
}
|
|
|
|
void ProcessMessages() {
|
|
/* While we have messages in our queue, receive and handle them. */
|
|
uintptr_t message_type, message_data;
|
|
while (os::TryReceiveMessageQueue(std::addressof(message_type), std::addressof(m_message_queue))) {
|
|
/* Receive the message's data. */
|
|
os::ReceiveMessageQueue(std::addressof(message_data), std::addressof(m_message_queue));
|
|
|
|
/* Handle the specific message. */
|
|
switch (static_cast<MessageType>(static_cast<typename std::underlying_type<MessageType>::type>(message_type))) {
|
|
case MessageType_AddSession:
|
|
{
|
|
/* Get the handle from where it's packed into the message type. */
|
|
const svc::Handle session_handle = static_cast<svc::Handle>(message_type >> BITSIZEOF(u32));
|
|
|
|
/* Allocate a service object for the port. */
|
|
auto *service_object = m_server_manager->AllocateObject(static_cast<size_t>(message_data));
|
|
|
|
/* Add the newly-created service object. */
|
|
this->AddSession(session_handle, service_object);
|
|
}
|
|
break;
|
|
case MessageType_TriggerResume:
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Perform the resume. */
|
|
const auto resume_key = ConvertMessageToKey(message_data);
|
|
m_deferral_manager.Resume(resume_key, this);
|
|
}
|
|
break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
}
|
|
|
|
void CloseSession(WaitableObject &object) {
|
|
/* Get the object's handle. */
|
|
const auto handle = object.GetHandle();
|
|
|
|
/* Close the object with our manager. */
|
|
m_object_manager->CloseObject(handle);
|
|
|
|
/* Close the handle itself. */
|
|
R_ABORT_UNLESS(svc::CloseHandle(handle));
|
|
|
|
/* Decrement our session count. */
|
|
--m_num_sessions;
|
|
}
|
|
|
|
void CloseSessionIfNecessary(WaitableObject &object, bool necessary) {
|
|
if (necessary) {
|
|
/* Get the object's handle. */
|
|
const auto handle = object.GetHandle();
|
|
|
|
/* Close the object with our manager. */
|
|
m_object_manager->CloseObject(handle);
|
|
|
|
/* Close the handle itself. */
|
|
R_ABORT_UNLESS(svc::CloseHandle(handle));
|
|
}
|
|
|
|
/* Decrement our session count. */
|
|
--m_num_sessions;
|
|
}
|
|
|
|
Result StartRegisterRetry(ResumeKey key) {
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Begin the retry. */
|
|
return m_deferral_manager.StartRegisterRetry(key);
|
|
} else {
|
|
return ResultSuccess();
|
|
}
|
|
}
|
|
|
|
void ProcessRegisterRetry(WaitableObject &object) {
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Process the retry. */
|
|
m_deferral_manager.ProcessRegisterRetry(object);
|
|
}
|
|
}
|
|
|
|
bool TestResume(ResumeKey key) {
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Check to see if the key corresponds to some deferred message. */
|
|
return m_deferral_manager.TestResume(key);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void TriggerResume(ResumeKey key) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Send the key as a message. */
|
|
os::SendMessageQueue(std::addressof(m_message_queue), static_cast<uintptr_t>(MessageType_TriggerResume));
|
|
os::SendMessageQueue(std::addressof(m_message_queue), ConvertKeyToMessage(key));
|
|
}
|
|
|
|
void TriggerAddSession(svc::Handle session_handle, size_t port_index) {
|
|
/* Acquire exclusive server manager access. */
|
|
std::scoped_lock lk(m_server_manager->GetMutex());
|
|
|
|
/* Increment our session count. */
|
|
++m_num_sessions;
|
|
|
|
/* Send information about the session as a message. */
|
|
os::SendMessageQueue(std::addressof(m_message_queue), static_cast<uintptr_t>(MessageType_AddSession) | (static_cast<u64>(session_handle) << BITSIZEOF(u32)));
|
|
os::SendMessageQueue(std::addressof(m_message_queue), static_cast<uintptr_t>(port_index));
|
|
}
|
|
public:
|
|
static bool IsRequestDeferred() {
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Get the message buffer. */
|
|
const svc::ipc::MessageBuffer message_buffer(svc::ipc::GetMessageBuffer());
|
|
|
|
/* Parse the hipc headers. */
|
|
const svc::ipc::MessageBuffer::MessageHeader message_header(message_buffer);
|
|
const svc::ipc::MessageBuffer::SpecialHeader special_header(message_buffer, message_header);
|
|
|
|
/* Determine raw data index. */
|
|
const auto raw_data_offset = message_buffer.GetRawDataIndex(message_header, special_header);
|
|
|
|
/* Result is the first raw data word. */
|
|
const Result method_result = message_buffer.GetRaw<u32>(raw_data_offset);
|
|
|
|
/* Check that the result is the special deferral result. */
|
|
return tipc::ResultRequestDeferred::Includes(method_result);
|
|
} else {
|
|
/* If deferral isn't supported, requests are never deferred. */
|
|
return false;
|
|
}
|
|
}
|
|
};
|
|
|
|
template<typename PortInfo, size_t PortSessions>
|
|
class PortManagerImpl final : public PortManagerBase {
|
|
private:
|
|
tipc::ObjectManager<1 + PortSessions> m_object_manager_impl;
|
|
public:
|
|
PortManagerImpl() : PortManagerBase(), m_object_manager_impl() {
|
|
/* ... */
|
|
}
|
|
|
|
void Initialize(s32 id, ServerManagerImpl *sm) {
|
|
/* Initialize our base. */
|
|
this->InitializeBase(id, sm, std::addressof(m_object_manager_impl));
|
|
|
|
/* Initialize our object manager. */
|
|
m_object_manager_impl.Initialize(std::addressof(this->m_waitable_manager));
|
|
}
|
|
};
|
|
|
|
template<size_t Ix>
|
|
using PortManager = PortManagerImpl<PortInfo<Ix>, SessionsPerPortManager<Ix>>;
|
|
|
|
using PortManagerTuple = decltype([]<size_t... Ix>(std::index_sequence<Ix...>) {
|
|
return std::tuple<PortManager<Ix>...>{};
|
|
}(std::make_index_sequence<NumPorts>()));
|
|
|
|
using PortAllocatorTuple = std::tuple<typename PortInfos::Allocator...>;
|
|
private:
|
|
os::Mutex m_mutex;
|
|
os::TlsSlot m_tls_slot;
|
|
PortManagerTuple m_port_managers;
|
|
PortAllocatorTuple m_port_allocators;
|
|
os::ThreadType m_port_threads[NumPorts - 1];
|
|
private:
|
|
template<size_t Ix>
|
|
ALWAYS_INLINE auto &GetPortManager() {
|
|
return std::get<Ix>(m_port_managers);
|
|
}
|
|
|
|
template<size_t Ix>
|
|
ALWAYS_INLINE const auto &GetPortManager() const {
|
|
return std::get<Ix>(m_port_managers);
|
|
}
|
|
|
|
template<size_t Ix>
|
|
void LoopAutoForPort() {
|
|
R_ABORT_UNLESS(this->LoopProcess(this->GetPortManager<Ix>()));
|
|
}
|
|
|
|
template<size_t Ix>
|
|
static void LoopAutoForPortThreadFunction(void *_this) {
|
|
static_cast<ServerManagerImpl *>(_this)->LoopAutoForPort<Ix>();
|
|
}
|
|
|
|
template<size_t Ix>
|
|
void InitializePortThread(s32 priority) {
|
|
/* Create the thread. */
|
|
R_ABORT_UNLESS(os::CreateThread(m_port_threads + Ix, &LoopAutoForPortThreadFunction<Ix>, this, s_port_stacks + Ix, ThreadStackSize, priority));
|
|
|
|
/* Start the thread. */
|
|
os::StartThread(m_port_threads + Ix);
|
|
}
|
|
public:
|
|
ServerManagerImpl() : m_mutex(true), m_tls_slot(), m_port_managers(), m_port_allocators() { /* ... */ }
|
|
|
|
os::TlsSlot GetTlsSlot() const { return m_tls_slot; }
|
|
|
|
os::Mutex &GetMutex() { return m_mutex; }
|
|
|
|
void Initialize() {
|
|
/* Initialize our tls slot. */
|
|
if constexpr (IsDeferralSupported) {
|
|
R_ABORT_UNLESS(os::SdkAllocateTlsSlot(std::addressof(m_tls_slot), nullptr));
|
|
}
|
|
|
|
/* Initialize our port managers. */
|
|
[this]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
(this->GetPortManager<Ix>().Initialize(static_cast<s32>(Ix), this), ...);
|
|
}(std::make_index_sequence<NumPorts>());
|
|
}
|
|
|
|
template<size_t Ix>
|
|
void RegisterPort(svc::Handle port_handle) {
|
|
this->GetPortManager<Ix>().RegisterPort(static_cast<s32>(Ix), port_handle);
|
|
}
|
|
|
|
template<size_t Ix>
|
|
void RegisterPort(sm::ServiceName service_name, size_t max_sessions) {
|
|
/* Register service. */
|
|
svc::Handle port_handle = svc::InvalidHandle;
|
|
R_ABORT_UNLESS(sm::RegisterService(std::addressof(port_handle), service_name, max_sessions, false));
|
|
|
|
/* Register the port handle. */
|
|
this->RegisterPort<Ix>(port_handle);
|
|
}
|
|
|
|
void LoopAuto() {
|
|
/* If we have additional threads, create and start them. */
|
|
if constexpr (NumPorts > 1) {
|
|
const auto thread_priority = os::GetThreadPriority(os::GetCurrentThread());
|
|
|
|
[thread_priority, this]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
/* Create all threads. */
|
|
(this->InitializePortThread<Ix>(thread_priority), ...);
|
|
}(std::make_index_sequence<NumPorts - 1>());
|
|
}
|
|
|
|
/* Process for the last port. */
|
|
this->LoopAutoForPort<NumPorts - 1>();
|
|
}
|
|
|
|
tipc::ServiceObjectBase *AllocateObject(size_t port_index) {
|
|
/* Check that the port index is valid. */
|
|
AMS_ABORT_UNLESS(port_index < NumPorts);
|
|
|
|
/* Try to allocate from each port, in turn. */
|
|
tipc::ServiceObjectBase *allocated = nullptr;
|
|
[this, port_index, &allocated]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
(this->TryAllocateObject<Ix>(port_index, allocated), ...);
|
|
}(std::make_index_sequence<NumPorts>());
|
|
|
|
/* Return the allocated object. */
|
|
AMS_ABORT_UNLESS(allocated != nullptr);
|
|
return allocated;
|
|
}
|
|
|
|
void TriggerResume(ResumeKey resume_key) {
|
|
/* Acquire exclusive access to ourselves. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Check/trigger resume on each of our ports. */
|
|
[this, resume_key]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
(this->TriggerResumeImpl<Ix>(resume_key), ...);
|
|
}(std::make_index_sequence<NumPorts>());
|
|
}
|
|
|
|
Result AddSession(svc::Handle *out, tipc::ServiceObjectBase *object) {
|
|
/* Acquire exclusive access to ourselves. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Create a handle for the session. */
|
|
svc::Handle session_handle;
|
|
R_TRY(svc::CreateSession(std::addressof(session_handle), out, false, 0));
|
|
|
|
/* Select the best port manager. */
|
|
PortManagerBase *best_manager = nullptr;
|
|
s32 best_sessions = -1;
|
|
[this, &best_manager, &best_sessions]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
(this->TrySelectBetterPort<Ix>(best_manager, best_sessions), ...);
|
|
}(std::make_index_sequence<NumPorts>());
|
|
|
|
/* Add the session to the least burdened manager. */
|
|
best_manager->AddSession(session_handle, object);
|
|
|
|
return ResultSuccess();
|
|
}
|
|
private:
|
|
template<size_t Ix> requires (Ix < NumPorts)
|
|
void TryAllocateObject(size_t port_index, tipc::ServiceObjectBase *&allocated) {
|
|
/* Check that the port index matches. */
|
|
if (port_index == Ix) {
|
|
/* Get the allocator. */
|
|
auto &allocator = std::get<Ix>(m_port_allocators);
|
|
|
|
/* Allocate the object. */
|
|
AMS_ABORT_UNLESS(allocated == nullptr);
|
|
allocated = allocator.Allocate();
|
|
AMS_ABORT_UNLESS(allocated != nullptr);
|
|
|
|
/* If we should, set the object's deleter. */
|
|
if constexpr (IsServiceObjectDeleter<typename std::tuple_element<Ix, PortAllocatorTuple>::type>) {
|
|
allocated->SetDeleter(std::addressof(allocator));
|
|
}
|
|
}
|
|
}
|
|
|
|
Result LoopProcess(PortManagerBase &port_manager) {
|
|
/* Set our tls slot's value to be the port manager we're processing for. */
|
|
if constexpr (IsDeferralSupported) {
|
|
os::SetTlsValue(this->GetTlsSlot(), reinterpret_cast<uintptr_t>(std::addressof(port_manager)));
|
|
}
|
|
|
|
/* Clear the message buffer. */
|
|
/* NOTE: Nintendo only clears the hipc header. */
|
|
std::memset(svc::ipc::GetMessageBuffer(), 0, svc::ipc::MessageBufferSize);
|
|
|
|
/* Process requests forever. */
|
|
svc::Handle reply_target = svc::InvalidHandle;
|
|
while (true) {
|
|
/* Reply to our pending request, and receive a new one. */
|
|
os::WaitableHolderType *signaled_holder = nullptr;
|
|
tipc::WaitableObject signaled_object{};
|
|
R_TRY_CATCH(port_manager.ReplyAndReceive(std::addressof(signaled_holder), std::addressof(signaled_object), reply_target)) {
|
|
R_CATCH(os::ResultSessionClosedForReceive, os::ResultReceiveListBroken) {
|
|
/* Close the object and continue. */
|
|
port_manager.CloseSession(signaled_object);
|
|
|
|
/* We have nothing to reply to. */
|
|
reply_target = svc::InvalidHandle;
|
|
continue;
|
|
}
|
|
} R_END_TRY_CATCH;
|
|
|
|
if (signaled_holder == nullptr) {
|
|
/* A session was signaled, accessible via signaled_object. */
|
|
switch (signaled_object.GetType()) {
|
|
case WaitableObject::ObjectType_Port:
|
|
{
|
|
/* Try to accept a new session */
|
|
svc::Handle session_handle;
|
|
if (R_SUCCEEDED(svc::AcceptSession(std::addressof(session_handle), signaled_object.GetHandle()))) {
|
|
this->TriggerAddSession(session_handle, static_cast<size_t>(port_manager.GetPortIndex()));
|
|
}
|
|
|
|
/* We have nothing to reply to. */
|
|
reply_target = svc::InvalidHandle;
|
|
}
|
|
break;
|
|
case WaitableObject::ObjectType_Session:
|
|
{
|
|
/* Process the request */
|
|
const Result process_result = port_manager.GetObjectManager()->ProcessRequest(signaled_object);
|
|
if (R_SUCCEEDED(process_result)) {
|
|
if constexpr (IsDeferralSupported) {
|
|
/* Check if the request is deferred. */
|
|
if (PortManagerBase::IsRequestDeferred()) {
|
|
/* Process the retry that we began. */
|
|
port_manager.ProcessRegisterRetry(signaled_object);
|
|
|
|
/* We have nothing to reply to. */
|
|
reply_target = svc::InvalidHandle;
|
|
} else {
|
|
/* We're done processing, so we should reply. */
|
|
reply_target = signaled_object.GetHandle();
|
|
}
|
|
} else {
|
|
/* We're done processing, so we should reply. */
|
|
reply_target = signaled_object.GetHandle();
|
|
}
|
|
} else {
|
|
/* We failed to process, so note the session as closed (or close it). */
|
|
port_manager.CloseSessionIfNecessary(signaled_object, !tipc::ResultSessionClosed::Includes(process_result));
|
|
|
|
/* We have nothing to reply to. */
|
|
reply_target = svc::InvalidHandle;
|
|
}
|
|
}
|
|
break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
} else {
|
|
/* Our message queue was signaled. */
|
|
port_manager.ProcessMessages();
|
|
|
|
/* We have nothing to reply to. */
|
|
reply_target = svc::InvalidHandle;
|
|
}
|
|
}
|
|
}
|
|
|
|
void TriggerAddSession(svc::Handle session_handle, size_t port_index) {
|
|
/* Acquire exclusive access to ourselves. */
|
|
std::scoped_lock lk(m_mutex);
|
|
|
|
/* Select the best port manager. */
|
|
PortManagerBase *best_manager = nullptr;
|
|
s32 best_sessions = -1;
|
|
[this, &best_manager, &best_sessions]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
|
|
(this->TrySelectBetterPort<Ix>(best_manager, best_sessions), ...);
|
|
}(std::make_index_sequence<NumPorts>());
|
|
|
|
/* Trigger the session add on the least-burdened manager. */
|
|
best_manager->TriggerAddSession(session_handle, port_index);
|
|
}
|
|
|
|
template<size_t Ix> requires (Ix < NumPorts)
|
|
void TrySelectBetterPort(PortManagerBase *&best_manager, s32 &best_sessions) {
|
|
auto &cur_manager = this->GetPortManager<Ix>();
|
|
const auto cur_sessions = cur_manager.GetSessionCount();
|
|
|
|
/* NOTE: It's unknown how nintendo handles the case where the last manager has more sessions (to cover the remainder). */
|
|
/* Our algorithm diverges from theirs (it does not do std::min bounds capping), to accommodate remainder ports. */
|
|
/* If we learn how they handle this edge case, we can change our ways to match theirs. */
|
|
|
|
if constexpr (Ix == 0) {
|
|
best_manager = std::addressof(cur_manager);
|
|
best_sessions = cur_sessions;
|
|
} else {
|
|
static_assert(SessionsPerPortManager<Ix - 1> == SessionsPerPortManager<0>);
|
|
static_assert(SessionsPerPortManager<Ix - 1> <= SessionsPerPortManager<Ix>);
|
|
if (cur_sessions < best_sessions || best_sessions >= static_cast<s32>(SessionsPerPortManager<Ix - 1>)) {
|
|
best_manager = std::addressof(cur_manager);
|
|
best_sessions = cur_sessions;
|
|
}
|
|
}
|
|
}
|
|
|
|
template<size_t Ix>
|
|
void TriggerResumeImpl(ResumeKey resume_key) {
|
|
/* Get the port manager. */
|
|
auto &port_manager = this->GetPortManager<Ix>();
|
|
|
|
/* If we should, trigger a resume. */
|
|
if (port_manager.TestResume(resume_key)) {
|
|
port_manager.TriggerResume(resume_key);
|
|
}
|
|
}
|
|
};
|
|
|
|
template<typename DeferralManagerType, typename... PortInfos>
|
|
using ServerManagerWithDeferral = ServerManagerImpl<DeferralManagerType, os::MemoryPageSize, PortInfos...>;
|
|
|
|
template<typename DeferralManagerType, size_t ThreadStackSize, typename... PortInfos>
|
|
using ServerManagerWithDeferralAndThreadStack = ServerManagerImpl<DeferralManagerType, ThreadStackSize, PortInfos...>;
|
|
|
|
template<typename... PortInfos>
|
|
using ServerManager = ServerManagerImpl<DummyDeferralManager, os::MemoryPageSize, PortInfos...>;
|
|
|
|
template<size_t ThreadStackSize, typename... PortInfos>
|
|
using ServerManagerWithThreadStack = ServerManagerImpl<DummyDeferralManager, ThreadStackSize, PortInfos...>;
|
|
|
|
}
|
|
|