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Merge pull request #12949 from liamwhite/multi-wait

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service: add os types and multi wait API
This commit is contained in:
liamwhite 2024-02-10 16:00:34 -05:00 committed by GitHub
commit 7c56ecca3f
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15 changed files with 580 additions and 363 deletions
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13
src/core/CMakeLists.txt
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@ -548,8 +548,6 @@ add_library(core STATIC
hle/service/es/es.h
hle/service/eupld/eupld.cpp
hle/service/eupld/eupld.h
hle/service/event.cpp
hle/service/event.h
hle/service/fatal/fatal.cpp
hle/service/fatal/fatal.h
hle/service/fatal/fatal_p.cpp
@ -676,8 +674,6 @@ add_library(core STATIC
hle/service/mm/mm_u.h
hle/service/mnpp/mnpp_app.cpp
hle/service/mnpp/mnpp_app.h
hle/service/mutex.cpp
hle/service/mutex.h
hle/service/ncm/ncm.cpp
hle/service/ncm/ncm.h
hle/service/nfc/common/amiibo_crypto.cpp
@ -790,6 +786,15 @@ add_library(core STATIC
hle/service/nvnflinger/window.h
hle/service/olsc/olsc.cpp
hle/service/olsc/olsc.h
hle/service/os/event.cpp
hle/service/os/event.h
hle/service/os/multi_wait_holder.cpp
hle/service/os/multi_wait_holder.h
hle/service/os/multi_wait_utils.h
hle/service/os/multi_wait.cpp
hle/service/os/multi_wait.h
hle/service/os/mutex.cpp
hle/service/os/mutex.h
hle/service/pcie/pcie.cpp
hle/service/pcie/pcie.h
hle/service/pctl/pctl.cpp

2
src/core/hle/service/am/applet.h
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@ -9,8 +9,8 @@
#include "common/math_util.h"
#include "core/hle/service/apm/apm_controller.h"
#include "core/hle/service/caps/caps_types.h"
#include "core/hle/service/event.h"
#include "core/hle/service/kernel_helpers.h"
#include "core/hle/service/os/event.h"
#include "core/hle/service/service.h"
#include "core/hle/service/am/am_types.h"

2
src/core/hle/service/am/applet_data_broker.h
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@ -7,8 +7,8 @@
#include <memory>
#include <mutex>
#include "core/hle/service/event.h"
#include "core/hle/service/kernel_helpers.h"
#include "core/hle/service/os/event.h"
union Result;

126
src/core/hle/service/glue/time/worker.cpp
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@ -7,6 +7,7 @@
#include "core/hle/service/glue/time/file_timestamp_worker.h"
#include "core/hle/service/glue/time/standard_steady_clock_resource.h"
#include "core/hle/service/glue/time/worker.h"
#include "core/hle/service/os/multi_wait_utils.h"
#include "core/hle/service/psc/time/common.h"
#include "core/hle/service/psc/time/service_manager.h"
#include "core/hle/service/psc/time/static.h"
@ -143,82 +144,46 @@ void TimeWorker::ThreadFunc(std::stop_token stop_token) {
Common::SetCurrentThreadName("TimeWorker");
Common::SetCurrentThreadPriority(Common::ThreadPriority::Low);
enum class EventType {
while (!stop_token.stop_requested()) {
enum class EventType : s32 {
Exit = 0,
IpmModuleService_GetEvent = 1,
PowerStateChange = 2,
SignalAlarms = 3,
UpdateLocalSystemClock = 4,
UpdateNetworkSystemClock = 5,
UpdateEphemeralSystemClock = 6,
UpdateSteadyClock = 7,
UpdateFileTimestamp = 8,
AutoCorrect = 9,
Max = 10,
PowerStateChange = 1,
SignalAlarms = 2,
UpdateLocalSystemClock = 3,
UpdateNetworkSystemClock = 4,
UpdateEphemeralSystemClock = 5,
UpdateSteadyClock = 6,
UpdateFileTimestamp = 7,
AutoCorrect = 8,
};
s32 num_objs{};
std::array<Kernel::KSynchronizationObject*, static_cast<u32>(EventType::Max)> wait_objs{};
std::array<EventType, static_cast<u32>(EventType::Max)> wait_indices{};
s32 index{};
const auto AddWaiter{
[&](Kernel::KSynchronizationObject* synchronization_object, EventType type) {
// Open a new reference to the object.
synchronization_object->Open();
// Insert into the list.
wait_indices[num_objs] = type;
wait_objs[num_objs++] = synchronization_object;
}};
while (!stop_token.stop_requested()) {
SCOPE_EXIT({
for (s32 i = 0; i < num_objs; i++) {
wait_objs[i]->Close();
}
});
num_objs = {};
wait_objs = {};
if (m_pm_state_change_handler.m_priority != 0) {
AddWaiter(&m_event->GetReadableEvent(), EventType::Exit);
// TODO
// AddWaiter(gIPmModuleService::GetEvent(), 1);
AddWaiter(&m_alarm_worker.GetEvent(), EventType::PowerStateChange);
// TODO: gIPmModuleService::GetEvent() 1
index = WaitAny(m_system.Kernel(),
&m_event->GetReadableEvent(), // 0
&m_alarm_worker.GetEvent() // 1
);
} else {
AddWaiter(&m_event->GetReadableEvent(), EventType::Exit);
// TODO
// AddWaiter(gIPmModuleService::GetEvent(), 1);
AddWaiter(&m_alarm_worker.GetEvent(), EventType::PowerStateChange);
AddWaiter(&m_alarm_worker.GetTimerEvent().GetReadableEvent(), EventType::SignalAlarms);
AddWaiter(m_local_clock_event, EventType::UpdateLocalSystemClock);
AddWaiter(m_network_clock_event, EventType::UpdateNetworkSystemClock);
AddWaiter(m_ephemeral_clock_event, EventType::UpdateEphemeralSystemClock);
AddWaiter(&m_timer_steady_clock->GetReadableEvent(), EventType::UpdateSteadyClock);
AddWaiter(&m_timer_file_system->GetReadableEvent(), EventType::UpdateFileTimestamp);
AddWaiter(m_standard_user_auto_correct_clock_event, EventType::AutoCorrect);
// TODO: gIPmModuleService::GetEvent() 1
index = WaitAny(m_system.Kernel(),
&m_event->GetReadableEvent(), // 0
&m_alarm_worker.GetEvent(), // 1
&m_alarm_worker.GetTimerEvent().GetReadableEvent(), // 2
m_local_clock_event, // 3
m_network_clock_event, // 4
m_ephemeral_clock_event, // 5
&m_timer_steady_clock->GetReadableEvent(), // 6
&m_timer_file_system->GetReadableEvent(), // 7
m_standard_user_auto_correct_clock_event // 8
);
}
s32 out_index{-1};
Kernel::KSynchronizationObject::Wait(m_system.Kernel(), &out_index, wait_objs.data(),
num_objs, -1);
ASSERT(out_index >= 0 && out_index < num_objs);
if (stop_token.stop_requested()) {
return;
}
switch (wait_indices[out_index]) {
switch (static_cast<EventType>(index)) {
case EventType::Exit:
return;
case EventType::IpmModuleService_GetEvent:
// TODO
// IPmModuleService::GetEvent()
// clear the event
// Handle power state change event
break;
case EventType::PowerStateChange:
m_alarm_worker.GetEvent().Clear();
if (m_pm_state_change_handler.m_priority <= 1) {
@ -235,19 +200,19 @@ void TimeWorker::ThreadFunc(std::stop_token stop_token) {
m_local_clock_event->Clear();
Service::PSC::Time::SystemClockContext context{};
auto res = m_local_clock->GetSystemClockContext(&context);
ASSERT(res == ResultSuccess);
R_ASSERT(m_local_clock->GetSystemClockContext(&context));
m_set_sys->SetUserSystemClockContext(context);
m_file_timestamp_worker.SetFilesystemPosixTime();
} break;
break;
}
case EventType::UpdateNetworkSystemClock: {
m_network_clock_event->Clear();
Service::PSC::Time::SystemClockContext context{};
auto res = m_network_clock->GetSystemClockContext(&context);
ASSERT(res == ResultSuccess);
R_ASSERT(m_network_clock->GetSystemClockContext(&context));
m_set_sys->SetNetworkSystemClockContext(context);
s64 time{};
@ -267,7 +232,8 @@ void TimeWorker::ThreadFunc(std::stop_token stop_token) {
}
m_file_timestamp_worker.SetFilesystemPosixTime();
} break;
break;
}
case EventType::UpdateEphemeralSystemClock: {
m_ephemeral_clock_event->Clear();
@ -295,7 +261,8 @@ void TimeWorker::ThreadFunc(std::stop_token stop_token) {
if (!g_ig_report_ephemeral_clock_context_set) {
g_ig_report_ephemeral_clock_context_set = true;
}
} break;
break;
}
case EventType::UpdateSteadyClock:
m_timer_steady_clock->Clear();
@ -314,21 +281,20 @@ void TimeWorker::ThreadFunc(std::stop_token stop_token) {
m_standard_user_auto_correct_clock_event->Clear();
bool automatic_correction{};
auto res = m_time_sm->IsStandardUserSystemClockAutomaticCorrectionEnabled(
&automatic_correction);
ASSERT(res == ResultSuccess);
R_ASSERT(m_time_sm->IsStandardUserSystemClockAutomaticCorrectionEnabled(
&automatic_correction));
Service::PSC::Time::SteadyClockTimePoint time_point{};
res = m_time_sm->GetStandardUserSystemClockAutomaticCorrectionUpdatedTime(&time_point);
ASSERT(res == ResultSuccess);
R_ASSERT(
m_time_sm->GetStandardUserSystemClockAutomaticCorrectionUpdatedTime(&time_point));
m_set_sys->SetUserSystemClockAutomaticCorrectionEnabled(automatic_correction);
m_set_sys->SetUserSystemClockAutomaticCorrectionUpdatedTime(time_point);
} break;
break;
}
default:
UNREACHABLE();
break;
}
}
}

2
src/core/hle/service/event.cpp → src/core/hle/service/os/event.cpp
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@ -2,8 +2,8 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_event.h"
#include "core/hle/service/event.h"
#include "core/hle/service/kernel_helpers.h"
#include "core/hle/service/os/event.h"
namespace Service {

0
src/core/hle/service/event.h → src/core/hle/service/os/event.h
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59
src/core/hle/service/os/multi_wait.cpp Normal file
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@ -0,0 +1,59 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_hardware_timer.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_common.h"
#include "core/hle/service/os/multi_wait.h"
namespace Service {
MultiWait::MultiWait() = default;
MultiWait::~MultiWait() = default;
MultiWaitHolder* MultiWait::WaitAny(Kernel::KernelCore& kernel) {
return this->TimedWaitImpl(kernel, -1);
}
MultiWaitHolder* MultiWait::TryWaitAny(Kernel::KernelCore& kernel) {
return this->TimedWaitImpl(kernel, 0);
}
MultiWaitHolder* MultiWait::TimedWaitAny(Kernel::KernelCore& kernel, s64 timeout_ns) {
return this->TimedWaitImpl(kernel, kernel.HardwareTimer().GetTick() + timeout_ns);
}
MultiWaitHolder* MultiWait::TimedWaitImpl(Kernel::KernelCore& kernel, s64 timeout_tick) {
std::array<MultiWaitHolder*, Kernel::Svc::ArgumentHandleCountMax> holders{};
std::array<Kernel::KSynchronizationObject*, Kernel::Svc::ArgumentHandleCountMax> objects{};
s32 out_index = -1;
s32 num_objects = 0;
for (auto it = m_wait_list.begin(); it != m_wait_list.end(); it++) {
ASSERT(num_objects < Kernel::Svc::ArgumentHandleCountMax);
holders[num_objects] = std::addressof(*it);
objects[num_objects] = it->GetNativeHandle();
num_objects++;
}
Kernel::KSynchronizationObject::Wait(kernel, std::addressof(out_index), objects.data(),
num_objects, timeout_tick);
if (out_index == -1) {
return nullptr;
} else {
return holders[out_index];
}
}
void MultiWait::MoveAll(MultiWait* other) {
while (!other->m_wait_list.empty()) {
MultiWaitHolder& holder = other->m_wait_list.front();
holder.UnlinkFromMultiWait();
holder.LinkToMultiWait(this);
}
}
} // namespace Service

36
src/core/hle/service/os/multi_wait.h Normal file
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@ -0,0 +1,36 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "core/hle/service/os/multi_wait_holder.h"
namespace Kernel {
class KernelCore;
}
namespace Service {
class MultiWait final {
public:
explicit MultiWait();
~MultiWait();
public:
MultiWaitHolder* WaitAny(Kernel::KernelCore& kernel);
MultiWaitHolder* TryWaitAny(Kernel::KernelCore& kernel);
MultiWaitHolder* TimedWaitAny(Kernel::KernelCore& kernel, s64 timeout_ns);
// TODO: SdkReplyAndReceive?
void MoveAll(MultiWait* other);
private:
MultiWaitHolder* TimedWaitImpl(Kernel::KernelCore& kernel, s64 timeout_tick);
private:
friend class MultiWaitHolder;
using ListType = Common::IntrusiveListMemberTraits<&MultiWaitHolder::m_list_node>::ListType;
ListType m_wait_list{};
};
} // namespace Service

25
src/core/hle/service/os/multi_wait_holder.cpp Normal file
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@ -0,0 +1,25 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/service/os/multi_wait.h"
#include "core/hle/service/os/multi_wait_holder.h"
namespace Service {
void MultiWaitHolder::LinkToMultiWait(MultiWait* multi_wait) {
if (m_multi_wait != nullptr) {
UNREACHABLE();
}
m_multi_wait = multi_wait;
m_multi_wait->m_wait_list.push_back(*this);
}
void MultiWaitHolder::UnlinkFromMultiWait() {
if (m_multi_wait) {
m_multi_wait->m_wait_list.erase(m_multi_wait->m_wait_list.iterator_to(*this));
m_multi_wait = nullptr;
}
}
} // namespace Service

44
src/core/hle/service/os/multi_wait_holder.h Normal file
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@ -0,0 +1,44 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "common/intrusive_list.h"
namespace Kernel {
class KSynchronizationObject;
} // namespace Kernel
namespace Service {
class MultiWait;
class MultiWaitHolder {
public:
explicit MultiWaitHolder(Kernel::KSynchronizationObject* native_handle)
: m_native_handle(native_handle) {}
void LinkToMultiWait(MultiWait* multi_wait);
void UnlinkFromMultiWait();
void SetUserData(uintptr_t user_data) {
m_user_data = user_data;
}
uintptr_t GetUserData() const {
return m_user_data;
}
Kernel::KSynchronizationObject* GetNativeHandle() const {
return m_native_handle;
}
private:
friend class MultiWait;
Common::IntrusiveListNode m_list_node{};
MultiWait* m_multi_wait{};
Kernel::KSynchronizationObject* m_native_handle{};
uintptr_t m_user_data{};
};
} // namespace Service

109
src/core/hle/service/os/multi_wait_utils.h Normal file
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@ -0,0 +1,109 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "core/hle/service/os/multi_wait.h"
namespace Service {
namespace impl {
class AutoMultiWaitHolder {
private:
MultiWaitHolder m_holder;
public:
template <typename T>
explicit AutoMultiWaitHolder(MultiWait* multi_wait, T&& arg) : m_holder(arg) {
m_holder.LinkToMultiWait(multi_wait);
}
~AutoMultiWaitHolder() {
m_holder.UnlinkFromMultiWait();
}
std::pair<MultiWaitHolder*, int> ConvertResult(const std::pair<MultiWaitHolder*, int> result,
int index) {
if (result.first == std::addressof(m_holder)) {
return std::make_pair(static_cast<MultiWaitHolder*>(nullptr), index);
} else {
return result;
}
}
};
using WaitAnyFunction = decltype(&MultiWait::WaitAny);
inline std::pair<MultiWaitHolder*, int> WaitAnyImpl(Kernel::KernelCore& kernel,
MultiWait* multi_wait, WaitAnyFunction func,
int) {
return std::pair<MultiWaitHolder*, int>((multi_wait->*func)(kernel), -1);
}
template <typename T, typename... Args>
inline std::pair<MultiWaitHolder*, int> WaitAnyImpl(Kernel::KernelCore& kernel,
MultiWait* multi_wait, WaitAnyFunction func,
int index, T&& x, Args&&... args) {
AutoMultiWaitHolder holder(multi_wait, std::forward<T>(x));
return holder.ConvertResult(
WaitAnyImpl(kernel, multi_wait, func, index + 1, std::forward<Args>(args)...), index);
}
template <typename... Args>
inline std::pair<MultiWaitHolder*, int> WaitAnyImpl(Kernel::KernelCore& kernel,
MultiWait* multi_wait, WaitAnyFunction func,
Args&&... args) {
return WaitAnyImpl(kernel, multi_wait, func, 0, std::forward<Args>(args)...);
}
template <typename... Args>
inline std::pair<MultiWaitHolder*, int> WaitAnyImpl(Kernel::KernelCore& kernel,
WaitAnyFunction func, Args&&... args) {
MultiWait temp_multi_wait;
return WaitAnyImpl(kernel, std::addressof(temp_multi_wait), func, 0,
std::forward<Args>(args)...);
}
class NotBoolButInt {
public:
constexpr NotBoolButInt(int v) : m_value(v) {}
constexpr operator int() const {
return m_value;
}
explicit operator bool() const = delete;
private:
int m_value;
};
} // namespace impl
template <typename... Args>
requires(sizeof...(Args) > 0)
inline std::pair<MultiWaitHolder*, int> WaitAny(Kernel::KernelCore& kernel, MultiWait* multi_wait,
Args&&... args) {
return impl::WaitAnyImpl(kernel, &MultiWait::WaitAny, multi_wait, std::forward<Args>(args)...);
}
template <typename... Args>
requires(sizeof...(Args) > 0)
inline int WaitAny(Kernel::KernelCore& kernel, Args&&... args) {
return impl::WaitAnyImpl(kernel, &MultiWait::WaitAny, std::forward<Args>(args)...).second;
}
template <typename... Args>
requires(sizeof...(Args) > 0)
inline std::pair<MultiWaitHolder*, int> TryWaitAny(Kernel::KernelCore& kernel,
MultiWait* multi_wait, Args&&... args) {
return impl::WaitAnyImpl(kernel, &MultiWait::TryWaitAny, multi_wait,
std::forward<Args>(args)...);
}
template <typename... Args>
requires(sizeof...(Args) > 0)
inline impl::NotBoolButInt TryWaitAny(Kernel::KernelCore& kernel, Args&&... args) {
return impl::WaitAnyImpl(kernel, &MultiWait::TryWaitAny, std::forward<Args>(args)...).second;
}
} // namespace Service

2
src/core/hle/service/mutex.cpp → src/core/hle/service/os/mutex.cpp
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@ -4,7 +4,7 @@
#include "core/core.h"
#include "core/hle/kernel/k_event.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/service/mutex.h"
#include "core/hle/service/os/mutex.h"
namespace Service {

0
src/core/hle/service/mutex.h → src/core/hle/service/os/mutex.h
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472
src/core/hle/service/server_manager.cpp
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@ -20,50 +20,91 @@
namespace Service {
constexpr size_t MaximumWaitObjects = 0x40;
enum HandleType {
enum class UserDataTag {
Port,
Session,
DeferEvent,
Event,
};
ServerManager::ServerManager(Core::System& system) : m_system{system}, m_serve_mutex{system} {
class Port : public MultiWaitHolder, public Common::IntrusiveListBaseNode<Port> {
public:
explicit Port(Kernel::KServerPort* server_port, SessionRequestHandlerFactory&& handler_factory)
: MultiWaitHolder(server_port), m_handler_factory(std::move(handler_factory)) {
this->SetUserData(static_cast<uintptr_t>(UserDataTag::Port));
}
~Port() {
this->GetNativeHandle()->Close();
}
SessionRequestHandlerPtr CreateHandler() {
return m_handler_factory();
}
private:
const SessionRequestHandlerFactory m_handler_factory;
};
class Session : public MultiWaitHolder, public Common::IntrusiveListBaseNode<Session> {
public:
explicit Session(Kernel::KServerSession* server_session,
std::shared_ptr<SessionRequestManager>&& manager)
: MultiWaitHolder(server_session), m_manager(std::move(manager)) {
this->SetUserData(static_cast<uintptr_t>(UserDataTag::Session));
}
~Session() {
this->GetNativeHandle()->Close();
}
std::shared_ptr<SessionRequestManager>& GetManager() {
return m_manager;
}
std::shared_ptr<HLERequestContext>& GetContext() {
return m_context;
}
private:
std::shared_ptr<SessionRequestManager> m_manager;
std::shared_ptr<HLERequestContext> m_context;
};
ServerManager::ServerManager(Core::System& system) : m_system{system}, m_selection_mutex{system} {
// Initialize event.
m_event = Kernel::KEvent::Create(system.Kernel());
m_event->Initialize(nullptr);
m_wakeup_event = Kernel::KEvent::Create(system.Kernel());
m_wakeup_event->Initialize(nullptr);
// Register event.
Kernel::KEvent::Register(system.Kernel(), m_event);
Kernel::KEvent::Register(system.Kernel(), m_wakeup_event);
// Link to holder.
m_wakeup_holder.emplace(std::addressof(m_wakeup_event->GetReadableEvent()));
m_wakeup_holder->LinkToMultiWait(std::addressof(m_deferred_list));
}
ServerManager::~ServerManager() {
// Signal stop.
m_stop_source.request_stop();
m_event->Signal();
m_wakeup_event->Signal();
// Wait for processing to stop.
m_stopped.Wait();
m_threads.clear();
// Clean up server ports.
for (const auto& [port, handler] : m_ports) {
port->Close();
// Clean up ports.
for (auto it = m_servers.begin(); it != m_servers.end(); it = m_servers.erase(it)) {
delete std::addressof(*it);
}
// Clean up sessions.
for (const auto& [session, manager] : m_sessions) {
session->Close();
for (auto it = m_sessions.begin(); it != m_sessions.end(); it = m_sessions.erase(it)) {
delete std::addressof(*it);
}
for (const auto& request : m_deferrals) {
request.session->Close();
}
// Close event.
m_event->GetReadableEvent().Close();
m_event->Close();
// Close wakeup event.
m_wakeup_event->GetReadableEvent().Close();
m_wakeup_event->Close();
if (m_deferral_event) {
m_deferral_event->GetReadableEvent().Close();
@ -75,19 +116,19 @@ void ServerManager::RunServer(std::unique_ptr<ServerManager>&& server_manager) {
server_manager->m_system.RunServer(std::move(server_manager));
}
Result ServerManager::RegisterSession(Kernel::KServerSession* session,
Result ServerManager::RegisterSession(Kernel::KServerSession* server_session,
std::shared_ptr<SessionRequestManager> manager) {
ASSERT(m_sessions.size() + m_ports.size() < MaximumWaitObjects);
// We are taking ownership of the server session, so don't open it.
auto* session = new Session(server_session, std::move(manager));
// Begin tracking the server session.
{
std::scoped_lock ll{m_list_mutex};
m_sessions.emplace(session, std::move(manager));
std::scoped_lock ll{m_deferred_list_mutex};
m_sessions.push_back(*session);
}
// Signal the wakeup event.
m_event->Signal();
// Register to wait on the session.
this->LinkToDeferredList(session);
R_SUCCEED();
}
@ -95,21 +136,22 @@ Result ServerManager::RegisterSession(Kernel::KServerSession* session,
Result ServerManager::RegisterNamedService(const std::string& service_name,
SessionRequestHandlerFactory&& handler_factory,
u32 max_sessions) {
ASSERT(m_sessions.size() + m_ports.size() < MaximumWaitObjects);
// Add the new server to sm: and get the moved server port.
Kernel::KServerPort* server_port{};
R_ASSERT(m_system.ServiceManager().RegisterService(std::addressof(server_port), service_name,
max_sessions, handler_factory));
// We are taking ownership of the server port, so don't open it.
auto* server = new Port(server_port, std::move(handler_factory));
// Begin tracking the server port.
{
std::scoped_lock ll{m_list_mutex};
m_ports.emplace(server_port, std::move(handler_factory));
std::scoped_lock ll{m_deferred_list_mutex};
m_servers.push_back(*server);
}
// Signal the wakeup event.
m_event->Signal();
// Register to wait on the server port.
this->LinkToDeferredList(server);
R_SUCCEED();
}
@ -127,8 +169,6 @@ Result ServerManager::RegisterNamedService(const std::string& service_name,
Result ServerManager::ManageNamedPort(const std::string& service_name,
SessionRequestHandlerFactory&& handler_factory,
u32 max_sessions) {
ASSERT(m_sessions.size() + m_ports.size() < MaximumWaitObjects);
// Create a new port.
auto* port = Kernel::KPort::Create(m_system.Kernel());
port->Initialize(max_sessions, false, 0);
@ -149,12 +189,18 @@ Result ServerManager::ManageNamedPort(const std::string& service_name,
// Open a new reference to the server port.
port->GetServerPort().Open();
// Begin tracking the server port.
// Transfer ownership into a new port object.
auto* server = new Port(std::addressof(port->GetServerPort()), std::move(handler_factory));
// Begin tracking the port.
{
std::scoped_lock ll{m_list_mutex};
m_ports.emplace(std::addressof(port->GetServerPort()), std::move(handler_factory));
std::scoped_lock ll{m_deferred_list_mutex};
m_servers.push_back(*server);
}
// Register to wait on the port.
this->LinkToDeferredList(server);
// We succeeded.
R_SUCCEED();
}
@ -173,6 +219,11 @@ Result ServerManager::ManageDeferral(Kernel::KEvent** out_event) {
// Set the output.
*out_event = m_deferral_event;
// Register to wait on the event.
m_deferral_holder.emplace(std::addressof(m_deferral_event->GetReadableEvent()));
m_deferral_holder->SetUserData(static_cast<uintptr_t>(UserDataTag::DeferEvent));
this->LinkToDeferredList(std::addressof(*m_deferral_holder));
// We succeeded.
R_SUCCEED();
}
@ -191,270 +242,185 @@ Result ServerManager::LoopProcess() {
R_RETURN(this->LoopProcessImpl());
}
void ServerManager::LinkToDeferredList(MultiWaitHolder* holder) {
// Link.
{
std::scoped_lock lk{m_deferred_list_mutex};
holder->LinkToMultiWait(std::addressof(m_deferred_list));
}
// Signal the wakeup event.
m_wakeup_event->Signal();
}
void ServerManager::LinkDeferred() {
std::scoped_lock lk{m_deferred_list_mutex};
m_multi_wait.MoveAll(std::addressof(m_deferred_list));
}
MultiWaitHolder* ServerManager::WaitSignaled() {
// Ensure we are the only thread waiting for this server.
std::scoped_lock lk{m_selection_mutex};
while (true) {
this->LinkDeferred();
// If we're done, return before we start waiting.
if (m_stop_source.stop_requested()) {
return nullptr;
}
auto* selected = m_multi_wait.WaitAny(m_system.Kernel());
if (selected == std::addressof(*m_wakeup_holder)) {
// Clear and restart if we were woken up.
m_wakeup_event->Clear();
} else {
// Unlink and handle the event.
selected->UnlinkFromMultiWait();
return selected;
}
}
}
Result ServerManager::Process(MultiWaitHolder* holder) {
switch (static_cast<UserDataTag>(holder->GetUserData())) {
case UserDataTag::Session:
R_RETURN(this->OnSessionEvent(static_cast<Session*>(holder)));
case UserDataTag::Port:
R_RETURN(this->OnPortEvent(static_cast<Port*>(holder)));
case UserDataTag::DeferEvent:
R_RETURN(this->OnDeferralEvent());
default:
UNREACHABLE();
}
}
bool ServerManager::WaitAndProcessImpl() {
if (auto* signaled_holder = this->WaitSignaled(); signaled_holder != nullptr) {
R_ASSERT(this->Process(signaled_holder));
return true;
} else {
return false;
}
}
Result ServerManager::LoopProcessImpl() {
while (!m_stop_source.stop_requested()) {
R_TRY(this->WaitAndProcessImpl());
this->WaitAndProcessImpl();
}
R_SUCCEED();
}
Result ServerManager::WaitAndProcessImpl() {
Kernel::KScopedAutoObject<Kernel::KSynchronizationObject> wait_obj;
HandleType wait_type{};
// Ensure we are the only thread waiting for this server.
std::unique_lock sl{m_serve_mutex};
// If we're done, return before we start waiting.
R_SUCCEED_IF(m_stop_source.stop_requested());
// Wait for a tracked object to become signaled.
{
s32 num_objs{};
std::array<HandleType, MaximumWaitObjects> wait_types{};
std::array<Kernel::KSynchronizationObject*, MaximumWaitObjects> wait_objs{};
const auto AddWaiter{
[&](Kernel::KSynchronizationObject* synchronization_object, HandleType type) {
// Open a new reference to the object.
synchronization_object->Open();
// Insert into the list.
wait_types[num_objs] = type;
wait_objs[num_objs++] = synchronization_object;
}};
{
std::scoped_lock ll{m_list_mutex};
// Add all of our ports.
for (const auto& [port, handler] : m_ports) {
AddWaiter(port, HandleType::Port);
}
// Add all of our sessions.
for (const auto& [session, manager] : m_sessions) {
AddWaiter(session, HandleType::Session);
}
}
// Add the deferral wakeup event.
if (m_deferral_event != nullptr) {
AddWaiter(std::addressof(m_deferral_event->GetReadableEvent()), HandleType::DeferEvent);
}
// Add the wakeup event.
AddWaiter(std::addressof(m_event->GetReadableEvent()), HandleType::Event);
// Clean up extra references on exit.
SCOPE_EXIT({
for (s32 i = 0; i < num_objs; i++) {
wait_objs[i]->Close();
}
});
// Wait for a signal.
s32 out_index{-1};
R_TRY_CATCH(Kernel::KSynchronizationObject::Wait(m_system.Kernel(), &out_index,
wait_objs.data(), num_objs, -1)) {
R_CATCH(Kernel::ResultSessionClosed) {
// On session closed, index is updated and we don't want to return an error.
}
}
R_END_TRY_CATCH;
ASSERT(out_index >= 0 && out_index < num_objs);
// Set the output index.
wait_obj = wait_objs[out_index];
wait_type = wait_types[out_index];
}
// Process what we just received, temporarily removing the object so it is
// not processed concurrently by another thread.
{
switch (wait_type) {
case HandleType::Port: {
// Port signaled.
auto* port = wait_obj->DynamicCast<Kernel::KServerPort*>();
SessionRequestHandlerFactory handler_factory;
// Remove from tracking.
{
std::scoped_lock ll{m_list_mutex};
ASSERT(m_ports.contains(port));
m_ports.at(port).swap(handler_factory);
m_ports.erase(port);
}
// Allow other threads to serve.
sl.unlock();
// Finish.
R_RETURN(this->OnPortEvent(port, std::move(handler_factory)));
}
case HandleType::Session: {
// Session signaled.
auto* session = wait_obj->DynamicCast<Kernel::KServerSession*>();
std::shared_ptr<SessionRequestManager> manager;
// Remove from tracking.
{
std::scoped_lock ll{m_list_mutex};
ASSERT(m_sessions.contains(session));
m_sessions.at(session).swap(manager);
m_sessions.erase(session);
}
// Allow other threads to serve.
sl.unlock();
// Finish.
R_RETURN(this->OnSessionEvent(session, std::move(manager)));
}
case HandleType::DeferEvent: {
// Clear event.
ASSERT(R_SUCCEEDED(m_deferral_event->Clear()));
// Drain the list of deferrals while we process.
std::list<RequestState> deferrals;
{
std::scoped_lock ll{m_list_mutex};
m_deferrals.swap(deferrals);
}
// Allow other threads to serve.
sl.unlock();
// Finish.
R_RETURN(this->OnDeferralEvent(std::move(deferrals)));
}
case HandleType::Event: {
// Clear event and finish.
R_RETURN(m_event->Clear());
}
default: {
UNREACHABLE();
}
}
}
}
Result ServerManager::OnPortEvent(Kernel::KServerPort* port,
SessionRequestHandlerFactory&& handler_factory) {
Result ServerManager::OnPortEvent(Port* server) {
// Accept a new server session.
Kernel::KServerSession* session = port->AcceptSession();
ASSERT(session != nullptr);
auto* server_port = static_cast<Kernel::KServerPort*>(server->GetNativeHandle());
Kernel::KServerSession* server_session = server_port->AcceptSession();
ASSERT(server_session != nullptr);
// Create the session manager and install the handler.
auto manager = std::make_shared<SessionRequestManager>(m_system.Kernel(), *this);
manager->SetSessionHandler(handler_factory());
manager->SetSessionHandler(server->CreateHandler());
// Track the server session.
{
std::scoped_lock ll{m_list_mutex};
m_ports.emplace(port, std::move(handler_factory));
m_sessions.emplace(session, std::move(manager));
}
// Create and register the new session.
this->RegisterSession(server_session, std::move(manager));
// Signal the wakeup event.
m_event->Signal();
// Resume tracking the port.
this->LinkToDeferredList(server);
// We succeeded.
R_SUCCEED();
}
Result ServerManager::OnSessionEvent(Kernel::KServerSession* session,
std::shared_ptr<SessionRequestManager>&& manager) {
Result rc{ResultSuccess};
Result ServerManager::OnSessionEvent(Session* session) {
Result res = ResultSuccess;
// Try to receive a message.
std::shared_ptr<HLERequestContext> context;
rc = session->ReceiveRequestHLE(&context, manager);
auto* server_session = static_cast<Kernel::KServerSession*>(session->GetNativeHandle());
res = server_session->ReceiveRequestHLE(&session->GetContext(), session->GetManager());
// If the session has been closed, we're done.
if (rc == Kernel::ResultSessionClosed) {
// Close the session.
session->Close();
// Finish.
if (res == Kernel::ResultSessionClosed) {
this->DestroySession(session);
R_SUCCEED();
}
ASSERT(R_SUCCEEDED(rc));
RequestState request{
.session = session,
.context = std::move(context),
.manager = std::move(manager),
};
R_ASSERT(res);
// Complete the sync request with deferral handling.
R_RETURN(this->CompleteSyncRequest(std::move(request)));
R_RETURN(this->CompleteSyncRequest(session));
}
Result ServerManager::CompleteSyncRequest(RequestState&& request) {
Result rc{ResultSuccess};
Result service_rc{ResultSuccess};
Result ServerManager::CompleteSyncRequest(Session* session) {
Result res = ResultSuccess;
Result service_res = ResultSuccess;
// Mark the request as not deferred.
request.context->SetIsDeferred(false);
session->GetContext()->SetIsDeferred(false);
// Complete the request. We have exclusive access to this session.
service_rc = request.manager->CompleteSyncRequest(request.session, *request.context);
auto* server_session = static_cast<Kernel::KServerSession*>(session->GetNativeHandle());
service_res =
session->GetManager()->CompleteSyncRequest(server_session, *session->GetContext());
// If we've been deferred, we're done.
if (request.context->GetIsDeferred()) {
// Insert into deferral list.
std::scoped_lock ll{m_list_mutex};
m_deferrals.emplace_back(std::move(request));
if (session->GetContext()->GetIsDeferred()) {
// Insert into deferred session list.
std::scoped_lock ll{m_deferred_list_mutex};
m_deferred_sessions.push_back(session);
// Finish.
R_SUCCEED();
}
// Send the reply.
rc = request.session->SendReplyHLE();
res = server_session->SendReplyHLE();
// If the session has been closed, we're done.
if (rc == Kernel::ResultSessionClosed || service_rc == IPC::ResultSessionClosed) {
// Close the session.
request.session->Close();
// Finish.
if (res == Kernel::ResultSessionClosed || service_res == IPC::ResultSessionClosed) {
this->DestroySession(session);
R_SUCCEED();
}
ASSERT(R_SUCCEEDED(rc));
ASSERT(R_SUCCEEDED(service_rc));
R_ASSERT(res);
R_ASSERT(service_res);
// Reinsert the session.
// We succeeded, so we can process future messages on this session.
this->LinkToDeferredList(session);
R_SUCCEED();
}
Result ServerManager::OnDeferralEvent() {
// Clear event before grabbing the list.
m_deferral_event->Clear();
// Get and clear list.
const auto deferrals = [&] {
std::scoped_lock lk{m_deferred_list_mutex};
return std::move(m_deferred_sessions);
}();
// Relink deferral event.
this->LinkToDeferredList(std::addressof(*m_deferral_holder));
// For each session, try again to complete the request.
for (auto* session : deferrals) {
R_ASSERT(this->CompleteSyncRequest(session));
}
R_SUCCEED();
}
void ServerManager::DestroySession(Session* session) {
// Unlink.
{
std::scoped_lock ll{m_list_mutex};
m_sessions.emplace(request.session, std::move(request.manager));
std::scoped_lock lk{m_deferred_list_mutex};
m_sessions.erase(m_sessions.iterator_to(*session));
}
// Signal the wakeup event.
m_event->Signal();
// We succeeded.
R_SUCCEED();
}
Result ServerManager::OnDeferralEvent(std::list<RequestState>&& deferrals) {
ON_RESULT_FAILURE {
std::scoped_lock ll{m_list_mutex};
m_deferrals.splice(m_deferrals.end(), deferrals);
};
while (!deferrals.empty()) {
RequestState request = deferrals.front();
deferrals.pop_front();
// Try again to complete the request.
R_TRY(this->CompleteSyncRequest(std::move(request)));
}
R_SUCCEED();
// Free the session.
delete session;
}
} // namespace Service

59
src/core/hle/service/server_manager.h
View File

@ -3,18 +3,17 @@
#pragma once
#include <functional>
#include <list>
#include <map>
#include <mutex>
#include <string_view>
#include <optional>
#include <vector>
#include "common/polyfill_thread.h"
#include "common/thread.h"
#include "core/hle/result.h"
#include "core/hle/service/hle_ipc.h"
#include "core/hle/service/mutex.h"
#include "core/hle/service/os/multi_wait.h"
#include "core/hle/service/os/mutex.h"
namespace Core {
class System;
@ -24,11 +23,13 @@ namespace Kernel {
class KEvent;
class KServerPort;
class KServerSession;
class KSynchronizationObject;
} // namespace Kernel
namespace Service {
class Port;
class Session;
class ServerManager {
public:
explicit ServerManager(Core::System& system);
@ -52,34 +53,40 @@ public:
static void RunServer(std::unique_ptr<ServerManager>&& server);
private:
struct RequestState;
void LinkToDeferredList(MultiWaitHolder* holder);
void LinkDeferred();
MultiWaitHolder* WaitSignaled();
Result Process(MultiWaitHolder* holder);
bool WaitAndProcessImpl();
Result LoopProcessImpl();
Result WaitAndProcessImpl();
Result OnPortEvent(Kernel::KServerPort* port, SessionRequestHandlerFactory&& handler_factory);
Result OnSessionEvent(Kernel::KServerSession* session,
std::shared_ptr<SessionRequestManager>&& manager);
Result OnDeferralEvent(std::list<RequestState>&& deferrals);
Result CompleteSyncRequest(RequestState&& state);
Result OnPortEvent(Port* port);
Result OnSessionEvent(Session* session);
Result OnDeferralEvent();
Result CompleteSyncRequest(Session* session);
private:
void DestroySession(Session* session);
private:
Core::System& m_system;
Mutex m_serve_mutex;
std::mutex m_list_mutex;
Mutex m_selection_mutex;
// Guest state tracking
std::map<Kernel::KServerPort*, SessionRequestHandlerFactory> m_ports{};
std::map<Kernel::KServerSession*, std::shared_ptr<SessionRequestManager>> m_sessions{};
Kernel::KEvent* m_event{};
// Events
Kernel::KEvent* m_wakeup_event{};
Kernel::KEvent* m_deferral_event{};
// Deferral tracking
struct RequestState {
Kernel::KServerSession* session;
std::shared_ptr<HLERequestContext> context;
std::shared_ptr<SessionRequestManager> manager;
};
std::list<RequestState> m_deferrals{};
// Deferred wait list
std::mutex m_deferred_list_mutex{};
MultiWait m_deferred_list{};
// Guest state tracking
MultiWait m_multi_wait{};
Common::IntrusiveListBaseTraits<Port>::ListType m_servers{};
Common::IntrusiveListBaseTraits<Session>::ListType m_sessions{};
std::list<Session*> m_deferred_sessions{};
std::optional<MultiWaitHolder> m_wakeup_holder{};
std::optional<MultiWaitHolder> m_deferral_holder{};
// Host state tracking
Common::Event m_stopped{};