diff options
Diffstat (limited to 'src/core/hle/kernel/k_client_port.cpp')
-rw-r--r-- | src/core/hle/kernel/k_client_port.cpp | 83 |
1 files changed, 39 insertions, 44 deletions
diff --git a/src/core/hle/kernel/k_client_port.cpp b/src/core/hle/kernel/k_client_port.cpp index 700ae71e3..40e09e532 100644 --- a/src/core/hle/kernel/k_client_port.cpp +++ b/src/core/hle/kernel/k_client_port.cpp @@ -11,26 +11,21 @@ namespace Kernel { -KClientPort::KClientPort(KernelCore& kernel_) : KSynchronizationObject{kernel_} {} +KClientPort::KClientPort(KernelCore& kernel) : KSynchronizationObject{kernel} {} KClientPort::~KClientPort() = default; -void KClientPort::Initialize(KPort* parent_port_, s32 max_sessions_, std::string&& name_) { +void KClientPort::Initialize(KPort* parent, s32 max_sessions) { // Set member variables. - num_sessions = 0; - peak_sessions = 0; - parent = parent_port_; - max_sessions = max_sessions_; - name = std::move(name_); + m_num_sessions = 0; + m_peak_sessions = 0; + m_parent = parent; + m_max_sessions = max_sessions; } void KClientPort::OnSessionFinalized() { - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl{m_kernel}; - // This might happen if a session was improperly used with this port. - ASSERT_MSG(num_sessions > 0, "num_sessions is invalid"); - - const auto prev = num_sessions--; - if (prev == max_sessions) { + if (const auto prev = m_num_sessions--; prev == m_max_sessions) { this->NotifyAvailable(); } } @@ -47,81 +42,81 @@ bool KClientPort::IsServerClosed() const { void KClientPort::Destroy() { // Note with our parent that we're closed. - parent->OnClientClosed(); + m_parent->OnClientClosed(); // Close our reference to our parent. - parent->Close(); + m_parent->Close(); } bool KClientPort::IsSignaled() const { - return num_sessions < max_sessions; + return m_num_sessions.load() < m_max_sessions; } Result KClientPort::CreateSession(KClientSession** out) { + // Declare the session we're going to allocate. + KSession* session{}; + // Reserve a new session from the resource limit. //! FIXME: we are reserving this from the wrong resource limit! - KScopedResourceReservation session_reservation(kernel.ApplicationProcess()->GetResourceLimit(), - LimitableResource::SessionCountMax); + KScopedResourceReservation session_reservation( + m_kernel.ApplicationProcess()->GetResourceLimit(), LimitableResource::SessionCountMax); R_UNLESS(session_reservation.Succeeded(), ResultLimitReached); + // Allocate a session normally. + session = KSession::Create(m_kernel); + + // Check that we successfully created a session. + R_UNLESS(session != nullptr, ResultOutOfResource); + // Update the session counts. { + ON_RESULT_FAILURE { + session->Close(); + }; + // Atomically increment the number of sessions. s32 new_sessions{}; { - const auto max = max_sessions; - auto cur_sessions = num_sessions.load(std::memory_order_acquire); + const auto max = m_max_sessions; + auto cur_sessions = m_num_sessions.load(std::memory_order_acquire); do { R_UNLESS(cur_sessions < max, ResultOutOfSessions); new_sessions = cur_sessions + 1; - } while (!num_sessions.compare_exchange_weak(cur_sessions, new_sessions, - std::memory_order_relaxed)); + } while (!m_num_sessions.compare_exchange_weak(cur_sessions, new_sessions, + std::memory_order_relaxed)); } // Atomically update the peak session tracking. { - auto peak = peak_sessions.load(std::memory_order_acquire); + auto peak = m_peak_sessions.load(std::memory_order_acquire); do { if (peak >= new_sessions) { break; } - } while (!peak_sessions.compare_exchange_weak(peak, new_sessions, - std::memory_order_relaxed)); + } while (!m_peak_sessions.compare_exchange_weak(peak, new_sessions, + std::memory_order_relaxed)); } } - // Create a new session. - KSession* session = KSession::Create(kernel); - if (session == nullptr) { - // Decrement the session count. - const auto prev = num_sessions--; - if (prev == max_sessions) { - this->NotifyAvailable(); - } - - return ResultOutOfResource; - } - // Initialize the session. - session->Initialize(this, parent->GetName()); + session->Initialize(this, m_parent->GetName()); // Commit the session reservation. session_reservation.Commit(); // Register the session. - KSession::Register(kernel, session); - auto session_guard = SCOPE_GUARD({ + KSession::Register(m_kernel, session); + ON_RESULT_FAILURE { session->GetClientSession().Close(); session->GetServerSession().Close(); - }); + }; // Enqueue the session with our parent. - R_TRY(parent->EnqueueSession(std::addressof(session->GetServerSession()))); + R_TRY(m_parent->EnqueueSession(std::addressof(session->GetServerSession()))); // We succeeded, so set the output. - session_guard.Cancel(); *out = std::addressof(session->GetClientSession()); - return ResultSuccess; + R_SUCCEED(); } } // namespace Kernel |