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kern: update port/session state semantics

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This commit is contained in:
Michael Scire 2021-04-07 14:45:38 -07:00 committed by SciresM
parent c62a7381f8
commit cbdf33260e
7 changed files with 32 additions and 11 deletions
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1
libraries/libmesosphere/include/mesosphere/kern_k_client_port.hpp
View file

@ -47,6 +47,7 @@ namespace ams::kern {
ALWAYS_INLINE s32 GetMaxSessions() const { return m_max_sessions; }
bool IsLight() const;
bool IsServerClosed() const;
/* Overridden virtual functions. */
virtual void Destroy() override;

3
libraries/libmesosphere/include/mesosphere/kern_k_object_name.hpp
View file

@ -47,6 +47,9 @@ namespace ams::kern {
Derived *derived = obj->DynamicCast<Derived *>();
R_UNLESS(derived != nullptr, svc::ResultNotFound());
/* Check that the object is closed. */
R_UNLESS(derived->IsServerClosed(), svc::ResultInvalidState());
return Delete(obj.GetPointerUnsafe(), name);
}

5
libraries/libmesosphere/include/mesosphere/kern_k_port.hpp
View file

@ -53,6 +53,11 @@ namespace ams::kern {
uintptr_t GetName() const { return m_name; }
bool IsLight() const { return m_is_light; }
bool IsServerClosed() const {
KScopedSchedulerLock sl;
return m_state == State::ServerClosed;
}
Result EnqueueSession(KServerSession *session);
Result EnqueueSession(KLightServerSession *session);

16
libraries/libmesosphere/include/mesosphere/kern_k_session.hpp
View file

@ -37,14 +37,22 @@ namespace ams::kern {
private:
KServerSession m_server;
KClientSession m_client;
State m_state;
std::atomic<std::underlying_type<State>::type> m_atomic_state;
KClientPort *m_port;
uintptr_t m_name;
KProcess *m_process;
bool m_initialized;
private:
ALWAYS_INLINE void SetState(State state) {
m_atomic_state = static_cast<u8>(state);
}
ALWAYS_INLINE State GetState() const {
return static_cast<State>(m_atomic_state.load());
}
public:
constexpr KSession()
: m_server(), m_client(), m_state(State::Invalid), m_port(), m_name(), m_process(), m_initialized()
: m_server(), m_client(), m_atomic_state(static_cast<std::underlying_type<State>::type>(State::Invalid)), m_port(), m_name(), m_process(), m_initialized()
{
/* ... */
}
@ -62,8 +70,8 @@ namespace ams::kern {
void OnServerClosed();
void OnClientClosed();
bool IsServerClosed() const { return m_state != State::Normal; }
bool IsClientClosed() const { return m_state != State::Normal; }
bool IsServerClosed() const { return this->GetState() != State::Normal; }
bool IsClientClosed() const { return this->GetState() != State::Normal; }
Result OnRequest(KSessionRequest *request) { return m_server.OnRequest(request); }

4
libraries/libmesosphere/source/kern_k_client_port.cpp
View file

@ -42,6 +42,10 @@ namespace ams::kern {
return this->GetParent()->IsLight();
}
bool KClientPort::IsServerClosed() const {
return this->GetParent()->IsServerClosed();
}
void KClientPort::Destroy() {
/* Note with our parent that we're closed. */
m_parent->OnClientClosed();

4
libraries/libmesosphere/source/kern_k_server_port.cpp
View file

@ -40,7 +40,7 @@ namespace ams::kern {
KServerSession *session = nullptr;
{
KScopedSchedulerLock sl;
while (!m_session_list.empty()) {
if (!m_session_list.empty()) {
session = std::addressof(m_session_list.front());
m_session_list.pop_front();
}
@ -60,7 +60,7 @@ namespace ams::kern {
KLightServerSession *session = nullptr;
{
KScopedSchedulerLock sl;
while (!m_light_session_list.empty()) {
if (!m_light_session_list.empty()) {
session = std::addressof(m_light_session_list.front());
m_light_session_list.pop_front();
}

10
libraries/libmesosphere/source/kern_k_session.cpp
View file

@ -35,7 +35,7 @@ namespace ams::kern {
m_client.Initialize(this);
/* Set state and name. */
m_state = State::Normal;
this->SetState(State::Normal);
m_name = name;
/* Set our owner process. */
@ -62,8 +62,8 @@ namespace ams::kern {
void KSession::OnServerClosed() {
MESOSPHERE_ASSERT_THIS();
if (m_state == State::Normal) {
m_state = State::ServerClosed;
if (this->GetState() == State::Normal) {
this->SetState(State::ServerClosed);
m_client.OnServerClosed();
}
}
@ -71,8 +71,8 @@ namespace ams::kern {
void KSession::OnClientClosed() {
MESOSPHERE_ASSERT_THIS();
if (m_state == State::Normal) {
m_state = State::ClientClosed;
if (this->GetState() == State::Normal) {
this->SetState(State::ClientClosed);
m_server.OnClientClosed();
}
}