mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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145 lines
5.1 KiB
C++
145 lines
5.1 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern {
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namespace {
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ALWAYS_INLINE void ReplyAsyncError(KProcess *to_process, uintptr_t to_msg_buf, size_t to_msg_buf_size, Result result) {
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/* Convert the buffer to a physical address. */
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KPhysicalAddress phys_addr;
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to_process->GetPageTable().GetPhysicalAddress(std::addressof(phys_addr), KProcessAddress(to_msg_buf));
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/* Convert the physical address to a linear pointer. */
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u32 *to_msg = GetPointer<u32>(KPageTable::GetHeapVirtualAddress(phys_addr));
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/* Set the error. */
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ams::svc::ipc::MessageBuffer msg(to_msg, to_msg_buf_size);
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msg.SetAsyncResult(result);
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}
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}
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void KServerSession::Destroy() {
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MESOSPHERE_ASSERT_THIS();
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this->parent->OnServerClosed();
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/* TODO: this->CleanupRequests(); */
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this->parent->Close();
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}
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Result KServerSession::OnRequest(KSessionRequest *request) {
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MESOSPHERE_UNIMPLEMENTED();
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}
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void KServerSession::OnClientClosed() {
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MESOSPHERE_ASSERT_THIS();
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KScopedLightLock lk(this->lock);
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/* Handle any pending requests. */
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KSessionRequest *prev_request = nullptr;
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while (true) {
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/* Declare variables for processing the request. */
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KSessionRequest *request = nullptr;
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KWritableEvent *event = nullptr;
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KThread *thread = nullptr;
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bool cur_request = false;
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bool terminate = false;
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/* Get the next request. */
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{
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KScopedSchedulerLock sl;
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if (this->current_request != nullptr && this->current_request != prev_request) {
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/* Set the request, open a reference as we process it. */
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request = this->current_request;
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request->Open();
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cur_request = true;
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/* Get thread and event for the request. */
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thread = request->GetThread();
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event = request->GetEvent();
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/* If the thread is terminating, handle that. */
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if (thread->IsTerminationRequested()) {
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request->ClearThread();
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request->ClearEvent();
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terminate = true;
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}
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prev_request = request;
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} else if (!this->request_list.empty()) {
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/* Pop the request from the front of the list. */
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request = std::addressof(this->request_list.front());
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this->request_list.pop_front();
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/* Get thread and event for the request. */
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thread = request->GetThread();
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event = request->GetEvent();
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}
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}
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/* If there are no requests, we're done. */
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if (request == nullptr) {
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break;
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}
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/* All requests must have threads. */
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MESOSPHERE_ASSERT(thread != nullptr);
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/* Ensure that we close the request when done. */
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ON_SCOPE_EXIT { request->Close(); };
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/* If we're terminating, close a reference to the thread and event. */
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if (terminate) {
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thread->Close();
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if (event != nullptr) {
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event->Close();
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}
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}
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/* If we need to, reply. */
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if (event != nullptr && !cur_request) {
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/* There must be no mappings. */
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MESOSPHERE_ASSERT(request->GetSendCount() == 0);
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MESOSPHERE_ASSERT(request->GetReceiveCount() == 0);
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MESOSPHERE_ASSERT(request->GetExchangeCount() == 0);
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/* Get the process and page table. */
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KProcess *client_process = thread->GetOwner();
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auto &client_pt = client_process->GetPageTable();
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/* Reply to the request. */
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ReplyAsyncError(client_process, request->GetAddress(), request->GetSize(), svc::ResultSessionClosed());
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/* Unlock the buffer. */
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/* NOTE: Nintendo does not check the result of this. */
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client_pt.UnlockForIpcUserBuffer(request->GetAddress(), request->GetSize());
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/* Signal the event. */
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event->Signal();
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}
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}
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/* Notify. */
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this->NotifyAbort(svc::ResultSessionClosed());
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}
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}
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