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k_server_session: preliminary support for userspace server sessions

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This commit is contained in:
Liam 2022-10-11 18:16:56 -04:00
parent 9b34afa588
commit 61a8696510
9 changed files with 346 additions and 49 deletions
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1
src/core/arm/dynarmic/arm_dynarmic_64.cpp
View file

@ -111,6 +111,7 @@ public:
LOG_ERROR(Core_ARM,
"Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc,
num_instructions, memory.Read32(pc));
ReturnException(pc, ARM_Interface::no_execute);
}
void InstructionCacheOperationRaised(Dynarmic::A64::InstructionCacheOperation op,

3
src/core/hle/ipc_helpers.h
View file

@ -152,7 +152,8 @@ public:
Kernel::LimitableResource::Sessions, 1);
auto* session = Kernel::KSession::Create(kernel);
session->Initialize(nullptr, iface->GetServiceName());
session->Initialize(nullptr, iface->GetServiceName(),
std::make_shared<Kernel::SessionRequestManager>(kernel));
context->AddMoveObject(&session->GetClientSession());
iface->ClientConnected(&session->GetServerSession());

5
src/core/hle/kernel/k_client_session.cpp
View file

@ -21,10 +21,9 @@ void KClientSession::Destroy() {
void KClientSession::OnServerClosed() {}
Result KClientSession::SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
Core::Timing::CoreTiming& core_timing) {
Result KClientSession::SendSyncRequest() {
// Signal the server session that new data is available
return parent->GetServerSession().HandleSyncRequest(thread, memory, core_timing);
return parent->GetServerSession().OnRequest();
}
} // namespace Kernel

3
src/core/hle/kernel/k_client_session.h
View file

@ -46,8 +46,7 @@ public:
return parent;
}
Result SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
Core::Timing::CoreTiming& core_timing);
Result SendSyncRequest();
void OnServerClosed();

241
src/core/hle/kernel/k_server_session.cpp
View file

@ -7,6 +7,8 @@
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/hle_ipc.h"
@ -18,13 +20,19 @@
#include "core/hle/kernel/k_server_session.h"
#include "core/hle/kernel/k_session.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/service_thread.h"
#include "core/memory.h"
namespace Kernel {
KServerSession::KServerSession(KernelCore& kernel_) : KSynchronizationObject{kernel_} {}
using ThreadQueueImplForKServerSessionRequest = KThreadQueue;
static constexpr u32 MessageBufferSize = 0x100;
KServerSession::KServerSession(KernelCore& kernel_)
: KSynchronizationObject{kernel_}, m_lock{kernel_} {}
KServerSession::~KServerSession() = default;
@ -33,17 +41,14 @@ void KServerSession::Initialize(KSession* parent_session_, std::string&& name_,
// Set member variables.
parent = parent_session_;
name = std::move(name_);
if (manager_) {
manager = manager_;
} else {
manager = std::make_shared<SessionRequestManager>(kernel);
}
}
void KServerSession::Destroy() {
parent->OnServerClosed();
this->CleanupRequests();
parent->Close();
// Release host emulation members.
@ -54,13 +59,13 @@ void KServerSession::Destroy() {
}
void KServerSession::OnClientClosed() {
if (manager->HasSessionHandler()) {
if (manager && manager->HasSessionHandler()) {
manager->SessionHandler().ClientDisconnected(this);
}
}
bool KServerSession::IsSignaled() const {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
// If the client is closed, we're always signaled.
if (parent->IsClientClosed()) {
@ -68,7 +73,7 @@ bool KServerSession::IsSignaled() const {
}
// Otherwise, we're signaled if we have a request and aren't handling one.
return false;
return !m_thread_request_list.empty() && m_current_thread_request == nullptr;
}
void KServerSession::AppendDomainHandler(SessionRequestHandlerPtr handler) {
@ -173,9 +178,221 @@ Result KServerSession::CompleteSyncRequest(HLERequestContext& context) {
return result;
}
Result KServerSession::HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
Core::Timing::CoreTiming& core_timing) {
return QueueSyncRequest(thread, memory);
Result KServerSession::OnRequest() {
// Create the wait queue.
ThreadQueueImplForKServerSessionRequest wait_queue{kernel};
{
// Lock the scheduler.
KScopedSchedulerLock sl{kernel};
// Ensure that we can handle new requests.
R_UNLESS(!parent->IsServerClosed(), ResultSessionClosed);
// Check that we're not terminating.
R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(), ResultTerminationRequested);
if (manager) {
// HLE request.
auto& memory{kernel.System().Memory()};
this->QueueSyncRequest(GetCurrentThreadPointer(kernel), memory);
} else {
// Non-HLE request.
auto* thread{GetCurrentThreadPointer(kernel)};
// Get whether we're empty.
const bool was_empty = m_thread_request_list.empty();
// Add the thread to the list.
thread->Open();
m_thread_request_list.push_back(thread);
// If we were empty, signal.
if (was_empty) {
this->NotifyAvailable();
}
}
// This is a synchronous request, so we should wait for our request to complete.
GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);
GetCurrentThread(kernel).BeginWait(&wait_queue);
}
return GetCurrentThread(kernel).GetWaitResult();
}
Result KServerSession::SendReply() {
// Lock the session.
KScopedLightLock lk(m_lock);
// Get the request.
KThread* client_thread;
{
KScopedSchedulerLock sl{kernel};
// Get the current request.
client_thread = m_current_thread_request;
R_UNLESS(client_thread != nullptr, ResultInvalidState);
// Clear the current request, since we're processing it.
m_current_thread_request = nullptr;
if (!m_thread_request_list.empty()) {
this->NotifyAvailable();
}
}
// Close reference to the request once we're done processing it.
SCOPE_EXIT({ client_thread->Close(); });
// Extract relevant information from the request.
// const uintptr_t client_message = request->GetAddress();
// const size_t client_buffer_size = request->GetSize();
// KThread *client_thread = request->GetThread();
// KEvent *event = request->GetEvent();
// Check whether we're closed.
const bool closed = (client_thread == nullptr || parent->IsClientClosed());
Result result = ResultSuccess;
if (!closed) {
// If we're not closed, send the reply.
Core::Memory::Memory& memory{kernel.System().Memory()};
KThread* server_thread{GetCurrentThreadPointer(kernel)};
UNIMPLEMENTED_IF(server_thread->GetOwnerProcess() != client_thread->GetOwnerProcess());
auto* src_msg_buffer = memory.GetPointer(server_thread->GetTLSAddress());
auto* dst_msg_buffer = memory.GetPointer(client_thread->GetTLSAddress());
std::memcpy(dst_msg_buffer, src_msg_buffer, MessageBufferSize);
} else {
result = ResultSessionClosed;
}
// Select a result for the client.
Result client_result = result;
if (closed && R_SUCCEEDED(result)) {
result = ResultSessionClosed;
client_result = ResultSessionClosed;
} else {
result = ResultSuccess;
}
// If there's a client thread, update it.
if (client_thread != nullptr) {
// End the client thread's wait.
KScopedSchedulerLock sl{kernel};
if (!client_thread->IsTerminationRequested()) {
client_thread->EndWait(client_result);
}
}
return result;
}
Result KServerSession::ReceiveRequest() {
// Lock the session.
KScopedLightLock lk(m_lock);
// Get the request and client thread.
// KSessionRequest *request;
KThread* client_thread;
{
KScopedSchedulerLock sl{kernel};
// Ensure that we can service the request.
R_UNLESS(!parent->IsClientClosed(), ResultSessionClosed);
// Ensure we aren't already servicing a request.
R_UNLESS(m_current_thread_request == nullptr, ResultNotFound);
// Ensure we have a request to service.
R_UNLESS(!m_thread_request_list.empty(), ResultNotFound);
// Pop the first request from the list.
client_thread = m_thread_request_list.front();
m_thread_request_list.pop_front();
// Get the thread for the request.
R_UNLESS(client_thread != nullptr, ResultSessionClosed);
// Open the client thread.
client_thread->Open();
}
// SCOPE_EXIT({ client_thread->Close(); });
// Set the request as our current.
m_current_thread_request = client_thread;
// Receive the message.
Core::Memory::Memory& memory{kernel.System().Memory()};
KThread* server_thread{GetCurrentThreadPointer(kernel)};
UNIMPLEMENTED_IF(server_thread->GetOwnerProcess() != client_thread->GetOwnerProcess());
auto* src_msg_buffer = memory.GetPointer(client_thread->GetTLSAddress());
auto* dst_msg_buffer = memory.GetPointer(server_thread->GetTLSAddress());
std::memcpy(dst_msg_buffer, src_msg_buffer, MessageBufferSize);
// We succeeded.
return ResultSuccess;
}
void KServerSession::CleanupRequests() {
KScopedLightLock lk(m_lock);
// Clean up any pending requests.
while (true) {
// Get the next request.
// KSessionRequest *request = nullptr;
KThread* client_thread = nullptr;
{
KScopedSchedulerLock sl{kernel};
if (m_current_thread_request) {
// Choose the current request if we have one.
client_thread = m_current_thread_request;
m_current_thread_request = nullptr;
} else if (!m_thread_request_list.empty()) {
// Pop the request from the front of the list.
client_thread = m_thread_request_list.front();
m_thread_request_list.pop_front();
}
}
// If there's no request, we're done.
if (client_thread == nullptr) {
break;
}
// Close a reference to the request once it's cleaned up.
SCOPE_EXIT({ client_thread->Close(); });
// Extract relevant information from the request.
// const uintptr_t client_message = request->GetAddress();
// const size_t client_buffer_size = request->GetSize();
// KThread *client_thread = request->GetThread();
// KEvent *event = request->GetEvent();
// KProcess *server_process = request->GetServerProcess();
// KProcess *client_process = (client_thread != nullptr) ?
// client_thread->GetOwnerProcess() : nullptr;
// KProcessPageTable *client_page_table = (client_process != nullptr) ?
// &client_process->GetPageTable() : nullptr;
// Cleanup the mappings.
// Result result = CleanupMap(request, server_process, client_page_table);
// If there's a client thread, update it.
if (client_thread != nullptr) {
// End the client thread's wait.
KScopedSchedulerLock sl{kernel};
if (!client_thread->IsTerminationRequested()) {
client_thread->EndWait(ResultSessionClosed);
}
}
}
}
} // namespace Kernel

35
src/core/hle/kernel/k_server_session.h
View file

@ -3,6 +3,7 @@
#pragma once
#include <list>
#include <memory>
#include <string>
#include <utility>
@ -10,6 +11,7 @@
#include <boost/intrusive/list.hpp>
#include "core/hle/kernel/hle_ipc.h"
#include "core/hle/kernel/k_light_lock.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/result.h"
@ -59,25 +61,15 @@ public:
void OnClientClosed();
void ClientConnected(SessionRequestHandlerPtr handler) {
if (manager) {
manager->SetSessionHandler(std::move(handler));
}
}
void ClientDisconnected() {
manager = nullptr;
}
/**
* Handle a sync request from the emulated application.
*
* @param thread Thread that initiated the request.
* @param memory Memory context to handle the sync request under.
* @param core_timing Core timing context to schedule the request event under.
*
* @returns Result from the operation.
*/
Result HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
Core::Timing::CoreTiming& core_timing);
/// Adds a new domain request handler to the collection of request handlers within
/// this ServerSession instance.
void AppendDomainHandler(SessionRequestHandlerPtr handler);
@ -88,7 +80,7 @@ public:
/// Returns true if the session has been converted to a domain, otherwise False
bool IsDomain() const {
return manager->IsDomain();
return manager && manager->IsDomain();
}
/// Converts the session to a domain at the end of the current command
@ -101,7 +93,15 @@ public:
return manager;
}
/// TODO: flesh these out to match the real kernel
Result OnRequest();
Result SendReply();
Result ReceiveRequest();
private:
/// Frees up waiting client sessions when this server session is about to die
void CleanupRequests();
/// Queues a sync request from the emulated application.
Result QueueSyncRequest(KThread* thread, Core::Memory::Memory& memory);
@ -112,7 +112,7 @@ private:
/// object handle.
Result HandleDomainSyncRequest(Kernel::HLERequestContext& context);
/// This session's HLE request handlers
/// This session's HLE request handlers; if nullptr, this is not an HLE server
std::shared_ptr<SessionRequestManager> manager;
/// When set to True, converts the session to a domain at the end of the command
@ -120,6 +120,13 @@ private:
/// KSession that owns this KServerSession
KSession* parent{};
/// List of threads which are pending a reply.
/// FIXME: KSessionRequest
std::list<KThread*> m_thread_request_list;
KThread* m_current_thread_request{};
KLightLock m_lock;
};
} // namespace Kernel

82
src/core/hle/kernel/svc.cpp
View file

@ -323,7 +323,7 @@ Result CreateSession(Core::System& system, Handle* out_server, Handle* out_clien
// Add the server session to the handle table.
R_TRY(handle_table.Add(out_server, &session->GetServerSession()));
// Add the client session to the handle table. */
// Add the client session to the handle table.
const auto result = handle_table.Add(out_client, &session->GetClientSession());
if (!R_SUCCEEDED(result)) {
@ -383,7 +383,8 @@ static Result ConnectToNamedPort(Core::System& system, Handle* out, VAddr port_n
// Create a session.
KClientSession* session{};
R_TRY(port->CreateSession(std::addressof(session)));
R_TRY(port->CreateSession(std::addressof(session),
std::make_shared<SessionRequestManager>(kernel)));
port->Close();
// Register the session in the table, close the extra reference.
@ -401,7 +402,7 @@ static Result ConnectToNamedPort32(Core::System& system, Handle* out_handle,
return ConnectToNamedPort(system, out_handle, port_name_address);
}
/// Makes a blocking IPC call to an OS service.
/// Makes a blocking IPC call to a service.
static Result SendSyncRequest(Core::System& system, Handle handle) {
auto& kernel = system.Kernel();
@ -415,22 +416,75 @@ static Result SendSyncRequest(Core::System& system, Handle handle) {
LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName());
{
KScopedSchedulerLock lock(kernel);
// This is a synchronous request, so we should wait for our request to complete.
GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue));
GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);
session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), system.CoreTiming());
}
return GetCurrentThread(kernel).GetWaitResult();
return session->SendSyncRequest();
}
static Result SendSyncRequest32(Core::System& system, Handle handle) {
return SendSyncRequest(system, handle);
}
static Result ReplyAndReceive(Core::System& system, s32* out_index, Handle* handles,
s32 num_handles, Handle reply_target, s64 timeout_ns) {
auto& kernel = system.Kernel();
auto& handle_table = GetCurrentThread(kernel).GetOwnerProcess()->GetHandleTable();
// Convert handle list to object table.
std::vector<KSynchronizationObject*> objs(num_handles);
R_UNLESS(
handle_table.GetMultipleObjects<KSynchronizationObject>(objs.data(), handles, num_handles),
ResultInvalidHandle);
// Ensure handles are closed when we're done.
SCOPE_EXIT({
for (auto i = 0; i < num_handles; ++i) {
objs[i]->Close();
}
});
// Reply to the target, if one is specified.
if (reply_target != InvalidHandle) {
KScopedAutoObject session = handle_table.GetObject<KServerSession>(reply_target);
R_UNLESS(session.IsNotNull(), ResultInvalidHandle);
// If we fail to reply, we want to set the output index to -1.
// ON_RESULT_FAILURE { *out_index = -1; };
// Send the reply.
// R_TRY(session->SendReply());
Result rc = session->SendReply();
if (!R_SUCCEEDED(rc)) {
*out_index = -1;
return rc;
}
}
// Wait for a message.
while (true) {
// Wait for an object.
s32 index;
Result result = KSynchronizationObject::Wait(kernel, &index, objs.data(),
static_cast<s32>(objs.size()), timeout_ns);
if (result == ResultTimedOut) {
return result;
}
// Receive the request.
if (R_SUCCEEDED(result)) {
KServerSession* session = objs[index]->DynamicCast<KServerSession*>();
if (session != nullptr) {
result = session->ReceiveRequest();
if (result == ResultNotFound) {
continue;
}
}
}
*out_index = index;
return result;
}
}
/// Get the ID for the specified thread.
static Result GetThreadId(Core::System& system, u64* out_thread_id, Handle thread_handle) {
// Get the thread from its handle.
@ -2951,7 +3005,7 @@ static const FunctionDef SVC_Table_64[] = {
{0x40, SvcWrap64<CreateSession>, "CreateSession"},
{0x41, nullptr, "AcceptSession"},
{0x42, nullptr, "ReplyAndReceiveLight"},
{0x43, nullptr, "ReplyAndReceive"},
{0x43, SvcWrap64<ReplyAndReceive>, "ReplyAndReceive"},
{0x44, nullptr, "ReplyAndReceiveWithUserBuffer"},
{0x45, SvcWrap64<CreateEvent>, "CreateEvent"},
{0x46, nullptr, "MapIoRegion"},

18
src/core/hle/kernel/svc_wrap.h
View file

@ -8,6 +8,7 @@
#include "core/core.h"
#include "core/hle/kernel/svc_types.h"
#include "core/hle/result.h"
#include "core/memory.h"
namespace Kernel {
@ -360,6 +361,23 @@ void SvcWrap64(Core::System& system) {
FuncReturn(system, retval);
}
// Used by ReplyAndReceive
template <Result func(Core::System&, s32*, Handle*, s32, Handle, s64)>
void SvcWrap64(Core::System& system) {
s32 param_1 = 0;
s32 num_handles = static_cast<s32>(Param(system, 2));
std::vector<Handle> handles(num_handles);
system.Memory().ReadBlock(Param(system, 1), handles.data(), num_handles * sizeof(Handle));
const u32 retval = func(system, &param_1, handles.data(), num_handles,
static_cast<s32>(Param(system, 3)), static_cast<s64>(Param(system, 4)))
.raw;
system.CurrentArmInterface().SetReg(1, param_1);
FuncReturn(system, retval);
}
// Used by WaitForAddress
template <Result func(Core::System&, u64, Svc::ArbitrationType, s32, s64)>
void SvcWrap64(Core::System& system) {

3
src/core/hle/service/sm/sm.cpp
View file

@ -156,7 +156,8 @@ ResultVal<Kernel::KClientSession*> SM::GetServiceImpl(Kernel::HLERequestContext&
// Create a new session.
Kernel::KClientSession* session{};
if (const auto result = port->GetClientPort().CreateSession(std::addressof(session));
if (const auto result = port->GetClientPort().CreateSession(
std::addressof(session), std::make_shared<Kernel::SessionRequestManager>(kernel));
result.IsError()) {
LOG_ERROR(Service_SM, "called service={} -> error 0x{:08X}", name, result.raw);
return result;