k_server_session: preliminary support for userspace server sessions
This commit is contained in:
Liam
parent
9b34afa588
commit
61a8696510
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@ -111,6 +111,7 @@ public:
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LOG_ERROR(Core_ARM,
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"Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc,
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num_instructions, memory.Read32(pc));
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ReturnException(pc, ARM_Interface::no_execute);
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}
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void InstructionCacheOperationRaised(Dynarmic::A64::InstructionCacheOperation op,
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@ -152,7 +152,8 @@ public:
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Kernel::LimitableResource::Sessions, 1);
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auto* session = Kernel::KSession::Create(kernel);
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session->Initialize(nullptr, iface->GetServiceName());
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session->Initialize(nullptr, iface->GetServiceName(),
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std::make_shared<Kernel::SessionRequestManager>(kernel));
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context->AddMoveObject(&session->GetClientSession());
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iface->ClientConnected(&session->GetServerSession());
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@ -21,10 +21,9 @@ void KClientSession::Destroy() {
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void KClientSession::OnServerClosed() {}
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Result KClientSession::SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
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Core::Timing::CoreTiming& core_timing) {
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Result KClientSession::SendSyncRequest() {
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// Signal the server session that new data is available
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return parent->GetServerSession().HandleSyncRequest(thread, memory, core_timing);
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return parent->GetServerSession().OnRequest();
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}
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} // namespace Kernel
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@ -46,8 +46,7 @@ public:
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return parent;
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}
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Result SendSyncRequest(KThread* thread, Core::Memory::Memory& memory,
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Core::Timing::CoreTiming& core_timing);
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Result SendSyncRequest();
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void OnServerClosed();
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@ -7,6 +7,8 @@
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "common/scope_exit.h"
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#include "core/core.h"
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#include "core/core_timing.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/hle_ipc.h"
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@ -18,13 +20,19 @@
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#include "core/hle/kernel/k_server_session.h"
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#include "core/hle/kernel/k_session.h"
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#include "core/hle/kernel/k_thread.h"
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#include "core/hle/kernel/k_thread_queue.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/service_thread.h"
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#include "core/memory.h"
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namespace Kernel {
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KServerSession::KServerSession(KernelCore& kernel_) : KSynchronizationObject{kernel_} {}
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using ThreadQueueImplForKServerSessionRequest = KThreadQueue;
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static constexpr u32 MessageBufferSize = 0x100;
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KServerSession::KServerSession(KernelCore& kernel_)
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: KSynchronizationObject{kernel_}, m_lock{kernel_} {}
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KServerSession::~KServerSession() = default;
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@ -33,17 +41,14 @@ void KServerSession::Initialize(KSession* parent_session_, std::string&& name_,
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// Set member variables.
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parent = parent_session_;
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name = std::move(name_);
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if (manager_) {
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manager = manager_;
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} else {
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manager = std::make_shared<SessionRequestManager>(kernel);
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}
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manager = manager_;
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}
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void KServerSession::Destroy() {
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parent->OnServerClosed();
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this->CleanupRequests();
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parent->Close();
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// Release host emulation members.
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@ -54,13 +59,13 @@ void KServerSession::Destroy() {
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}
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void KServerSession::OnClientClosed() {
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if (manager->HasSessionHandler()) {
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if (manager && manager->HasSessionHandler()) {
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manager->SessionHandler().ClientDisconnected(this);
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}
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}
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bool KServerSession::IsSignaled() const {
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ASSERT(kernel.GlobalSchedulerContext().IsLocked());
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ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
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// If the client is closed, we're always signaled.
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if (parent->IsClientClosed()) {
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@ -68,7 +73,7 @@ bool KServerSession::IsSignaled() const {
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}
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// Otherwise, we're signaled if we have a request and aren't handling one.
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return false;
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return !m_thread_request_list.empty() && m_current_thread_request == nullptr;
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}
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void KServerSession::AppendDomainHandler(SessionRequestHandlerPtr handler) {
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@ -173,9 +178,221 @@ Result KServerSession::CompleteSyncRequest(HLERequestContext& context) {
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return result;
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}
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Result KServerSession::HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
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Core::Timing::CoreTiming& core_timing) {
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return QueueSyncRequest(thread, memory);
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Result KServerSession::OnRequest() {
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// Create the wait queue.
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ThreadQueueImplForKServerSessionRequest wait_queue{kernel};
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{
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// Lock the scheduler.
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KScopedSchedulerLock sl{kernel};
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// Ensure that we can handle new requests.
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R_UNLESS(!parent->IsServerClosed(), ResultSessionClosed);
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// Check that we're not terminating.
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R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(), ResultTerminationRequested);
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if (manager) {
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// HLE request.
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auto& memory{kernel.System().Memory()};
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this->QueueSyncRequest(GetCurrentThreadPointer(kernel), memory);
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} else {
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// Non-HLE request.
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auto* thread{GetCurrentThreadPointer(kernel)};
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// Get whether we're empty.
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const bool was_empty = m_thread_request_list.empty();
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// Add the thread to the list.
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thread->Open();
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m_thread_request_list.push_back(thread);
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// If we were empty, signal.
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if (was_empty) {
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this->NotifyAvailable();
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}
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}
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// This is a synchronous request, so we should wait for our request to complete.
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GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);
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GetCurrentThread(kernel).BeginWait(&wait_queue);
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}
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return GetCurrentThread(kernel).GetWaitResult();
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}
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Result KServerSession::SendReply() {
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// Lock the session.
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KScopedLightLock lk(m_lock);
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// Get the request.
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KThread* client_thread;
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{
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KScopedSchedulerLock sl{kernel};
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// Get the current request.
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client_thread = m_current_thread_request;
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R_UNLESS(client_thread != nullptr, ResultInvalidState);
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// Clear the current request, since we're processing it.
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m_current_thread_request = nullptr;
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if (!m_thread_request_list.empty()) {
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this->NotifyAvailable();
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}
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}
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// Close reference to the request once we're done processing it.
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SCOPE_EXIT({ client_thread->Close(); });
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// Extract relevant information from the request.
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// const uintptr_t client_message = request->GetAddress();
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// const size_t client_buffer_size = request->GetSize();
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// KThread *client_thread = request->GetThread();
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// KEvent *event = request->GetEvent();
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// Check whether we're closed.
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const bool closed = (client_thread == nullptr || parent->IsClientClosed());
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Result result = ResultSuccess;
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if (!closed) {
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// If we're not closed, send the reply.
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Core::Memory::Memory& memory{kernel.System().Memory()};
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KThread* server_thread{GetCurrentThreadPointer(kernel)};
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UNIMPLEMENTED_IF(server_thread->GetOwnerProcess() != client_thread->GetOwnerProcess());
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auto* src_msg_buffer = memory.GetPointer(server_thread->GetTLSAddress());
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auto* dst_msg_buffer = memory.GetPointer(client_thread->GetTLSAddress());
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std::memcpy(dst_msg_buffer, src_msg_buffer, MessageBufferSize);
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} else {
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result = ResultSessionClosed;
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}
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// Select a result for the client.
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Result client_result = result;
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if (closed && R_SUCCEEDED(result)) {
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result = ResultSessionClosed;
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client_result = ResultSessionClosed;
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} else {
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result = ResultSuccess;
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}
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// If there's a client thread, update it.
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if (client_thread != nullptr) {
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// End the client thread's wait.
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KScopedSchedulerLock sl{kernel};
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if (!client_thread->IsTerminationRequested()) {
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client_thread->EndWait(client_result);
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}
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}
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return result;
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}
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Result KServerSession::ReceiveRequest() {
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// Lock the session.
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KScopedLightLock lk(m_lock);
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// Get the request and client thread.
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// KSessionRequest *request;
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KThread* client_thread;
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{
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KScopedSchedulerLock sl{kernel};
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// Ensure that we can service the request.
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R_UNLESS(!parent->IsClientClosed(), ResultSessionClosed);
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// Ensure we aren't already servicing a request.
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R_UNLESS(m_current_thread_request == nullptr, ResultNotFound);
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// Ensure we have a request to service.
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R_UNLESS(!m_thread_request_list.empty(), ResultNotFound);
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// Pop the first request from the list.
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client_thread = m_thread_request_list.front();
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m_thread_request_list.pop_front();
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// Get the thread for the request.
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R_UNLESS(client_thread != nullptr, ResultSessionClosed);
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// Open the client thread.
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client_thread->Open();
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}
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// SCOPE_EXIT({ client_thread->Close(); });
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// Set the request as our current.
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m_current_thread_request = client_thread;
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// Receive the message.
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Core::Memory::Memory& memory{kernel.System().Memory()};
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KThread* server_thread{GetCurrentThreadPointer(kernel)};
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UNIMPLEMENTED_IF(server_thread->GetOwnerProcess() != client_thread->GetOwnerProcess());
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auto* src_msg_buffer = memory.GetPointer(client_thread->GetTLSAddress());
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auto* dst_msg_buffer = memory.GetPointer(server_thread->GetTLSAddress());
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std::memcpy(dst_msg_buffer, src_msg_buffer, MessageBufferSize);
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// We succeeded.
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return ResultSuccess;
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}
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void KServerSession::CleanupRequests() {
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KScopedLightLock lk(m_lock);
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// Clean up any pending requests.
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while (true) {
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// Get the next request.
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// KSessionRequest *request = nullptr;
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KThread* client_thread = nullptr;
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{
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KScopedSchedulerLock sl{kernel};
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if (m_current_thread_request) {
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// Choose the current request if we have one.
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client_thread = m_current_thread_request;
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m_current_thread_request = nullptr;
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} else if (!m_thread_request_list.empty()) {
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// Pop the request from the front of the list.
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client_thread = m_thread_request_list.front();
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m_thread_request_list.pop_front();
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}
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}
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// If there's no request, we're done.
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if (client_thread == nullptr) {
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break;
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}
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// Close a reference to the request once it's cleaned up.
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SCOPE_EXIT({ client_thread->Close(); });
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// Extract relevant information from the request.
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// const uintptr_t client_message = request->GetAddress();
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// const size_t client_buffer_size = request->GetSize();
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// KThread *client_thread = request->GetThread();
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// KEvent *event = request->GetEvent();
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// KProcess *server_process = request->GetServerProcess();
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// KProcess *client_process = (client_thread != nullptr) ?
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// client_thread->GetOwnerProcess() : nullptr;
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// KProcessPageTable *client_page_table = (client_process != nullptr) ?
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// &client_process->GetPageTable() : nullptr;
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// Cleanup the mappings.
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// Result result = CleanupMap(request, server_process, client_page_table);
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// If there's a client thread, update it.
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if (client_thread != nullptr) {
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// End the client thread's wait.
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KScopedSchedulerLock sl{kernel};
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if (!client_thread->IsTerminationRequested()) {
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client_thread->EndWait(ResultSessionClosed);
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}
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}
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}
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}
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} // namespace Kernel
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@ -3,6 +3,7 @@
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#pragma once
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#include <list>
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#include <memory>
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#include <string>
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#include <utility>
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@ -10,6 +11,7 @@
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#include <boost/intrusive/list.hpp>
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#include "core/hle/kernel/hle_ipc.h"
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#include "core/hle/kernel/k_light_lock.h"
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#include "core/hle/kernel/k_synchronization_object.h"
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#include "core/hle/result.h"
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@ -59,25 +61,15 @@ public:
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void OnClientClosed();
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void ClientConnected(SessionRequestHandlerPtr handler) {
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manager->SetSessionHandler(std::move(handler));
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if (manager) {
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manager->SetSessionHandler(std::move(handler));
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}
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}
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void ClientDisconnected() {
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manager = nullptr;
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}
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/**
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* Handle a sync request from the emulated application.
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*
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* @param thread Thread that initiated the request.
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* @param memory Memory context to handle the sync request under.
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* @param core_timing Core timing context to schedule the request event under.
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*
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* @returns Result from the operation.
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*/
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Result HandleSyncRequest(KThread* thread, Core::Memory::Memory& memory,
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Core::Timing::CoreTiming& core_timing);
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/// Adds a new domain request handler to the collection of request handlers within
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/// this ServerSession instance.
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void AppendDomainHandler(SessionRequestHandlerPtr handler);
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@ -88,7 +80,7 @@ public:
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/// Returns true if the session has been converted to a domain, otherwise False
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bool IsDomain() const {
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return manager->IsDomain();
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return manager && manager->IsDomain();
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}
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/// Converts the session to a domain at the end of the current command
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@ -101,7 +93,15 @@ public:
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return manager;
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}
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/// TODO: flesh these out to match the real kernel
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Result OnRequest();
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Result SendReply();
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Result ReceiveRequest();
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private:
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/// Frees up waiting client sessions when this server session is about to die
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void CleanupRequests();
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/// Queues a sync request from the emulated application.
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Result QueueSyncRequest(KThread* thread, Core::Memory::Memory& memory);
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@ -112,7 +112,7 @@ private:
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/// object handle.
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Result HandleDomainSyncRequest(Kernel::HLERequestContext& context);
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/// This session's HLE request handlers
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/// This session's HLE request handlers; if nullptr, this is not an HLE server
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std::shared_ptr<SessionRequestManager> manager;
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/// When set to True, converts the session to a domain at the end of the command
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@ -120,6 +120,13 @@ private:
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/// KSession that owns this KServerSession
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KSession* parent{};
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/// List of threads which are pending a reply.
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/// FIXME: KSessionRequest
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std::list<KThread*> m_thread_request_list;
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KThread* m_current_thread_request{};
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KLightLock m_lock;
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};
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} // namespace Kernel
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@ -323,7 +323,7 @@ Result CreateSession(Core::System& system, Handle* out_server, Handle* out_clien
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// Add the server session to the handle table.
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R_TRY(handle_table.Add(out_server, &session->GetServerSession()));
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// Add the client session to the handle table. */
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// Add the client session to the handle table.
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const auto result = handle_table.Add(out_client, &session->GetClientSession());
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if (!R_SUCCEEDED(result)) {
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@ -383,7 +383,8 @@ static Result ConnectToNamedPort(Core::System& system, Handle* out, VAddr port_n
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// Create a session.
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KClientSession* session{};
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R_TRY(port->CreateSession(std::addressof(session)));
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R_TRY(port->CreateSession(std::addressof(session),
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std::make_shared<SessionRequestManager>(kernel)));
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port->Close();
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// Register the session in the table, close the extra reference.
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@ -401,7 +402,7 @@ static Result ConnectToNamedPort32(Core::System& system, Handle* out_handle,
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return ConnectToNamedPort(system, out_handle, port_name_address);
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}
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/// Makes a blocking IPC call to an OS service.
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/// Makes a blocking IPC call to a service.
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static Result SendSyncRequest(Core::System& system, Handle handle) {
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auto& kernel = system.Kernel();
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@ -415,22 +416,75 @@ static Result SendSyncRequest(Core::System& system, Handle handle) {
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LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName());
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{
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KScopedSchedulerLock lock(kernel);
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// This is a synchronous request, so we should wait for our request to complete.
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GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue));
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GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC);
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session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), system.CoreTiming());
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}
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||||
|
||||
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"},
|
||||
|
|
|
|||
|
|
@ -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, ¶m_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) {
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
|
|
|
|||
Reference in New Issue