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Atmosphere/libraries/libstratosphere/source/htcs/impl/htcs_monitor.cpp
2021-02-24 04:06:54 -08:00

106 lines
3.7 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "htcs_manager.hpp"
#include "htcs_manager_impl.hpp"
namespace ams::htcs::impl {
HtcsMonitor::HtcsMonitor(mem::StandardAllocator *allocator, htc::server::driver::IDriver *drv, htc::server::rpc::RpcClient *rc, HtcsService *srv)
: m_allocator(allocator),
m_driver(drv),
m_rpc_client(rc),
m_service(srv),
m_monitor_thread_stack(m_allocator->Allocate(os::MemoryPageSize, os::ThreadStackAlignment)),
m_mutex(),
m_cancel_event(os::EventClearMode_ManualClear),
m_service_availability_event(os::EventClearMode_ManualClear),
m_cancelled(false),
m_is_service_available(false)
{
/* ... */
}
HtcsMonitor::~HtcsMonitor() {
/* Free thread stack. */
m_allocator->Free(m_monitor_thread_stack);
}
void HtcsMonitor::Start() {
/* Create the monitor thread. */
R_ABORT_UNLESS(os::CreateThread(std::addressof(m_monitor_thread), ThreadEntry, this, m_monitor_thread_stack, os::MemoryPageSize, AMS_GET_SYSTEM_THREAD_PRIORITY(htc, HtcsMonitor)));
/* Set thread name. */
os::SetThreadNamePointer(std::addressof(m_monitor_thread), AMS_GET_SYSTEM_THREAD_NAME(htc, HtcsMonitor));
/* Start the monitor thread. */
os::StartThread(std::addressof(m_monitor_thread));
}
void HtcsMonitor::Cancel() {
/* Cancel, and signal. */
m_cancelled = true;
m_cancel_event.Signal();
}
void HtcsMonitor::Wait() {
/* Wait for the thread. */
os::WaitThread(std::addressof(m_monitor_thread));
os::DestroyThread(std::addressof(m_monitor_thread));
}
void HtcsMonitor::ThreadBody() {
/* Loop so long as we're not cancelled. */
while (!m_cancelled) {
/* Open the rpc client. */
m_rpc_client->Open();
/* Ensure we close, if something goes wrong. */
auto client_guard = SCOPE_GUARD { m_rpc_client->Close(); };
/* Wait for the rpc server. */
if (m_rpc_client->WaitAny(htclow::ChannelState_Connectable, m_cancel_event.GetBase()) != 0) {
break;
}
/* Start the rpc client. */
const Result start_result = m_rpc_client->Start();
if (R_FAILED(start_result)) {
/* DEBUG */
R_ABORT_UNLESS(start_result);
continue;
}
/* We're available! */
this->SetServiceAvailability(true);
client_guard.Cancel();
/* We're available, so we want to cleanup when we're done. */
ON_SCOPE_EXIT {
m_rpc_client->Close();
m_rpc_client->Cancel();
m_rpc_client->Wait();
this->SetServiceAvailability(false);
};
/* Wait to become disconnected. */
if (m_rpc_client->WaitAny(htclow::ChannelState_Disconnected, m_cancel_event.GetBase()) != 0) {
break;
}
}
}
}