meso: Implement KLightServerSession dtor

mesosphere/include/mesosphere/processes/KLightClientSession.hpp

@@ -21,7 +21,6 @@ class KLightClientSession final : public KAutoObject, public IClient<KLightSessi
     friend class KLightSession;
 
     KClientPort *parentPort = nullptr;
-    bool isRemoteActive = false;
 };
 
 MESOSPHERE_AUTO_OBJECT_DEFINE_INCREF(LightClientSession);

mesosphere/include/mesosphere/processes/KLightServerSession.hpp

@@ -38,12 +38,13 @@ class KLightServerSession final :
     virtual bool IsSignaled() const override;
 
     private:
-
     friend class KLightSession;
 
+    void Terminate(bool fromServer);
+
     KThread::WaitList senderThreads{}, receiverThreads{};
-    SharedPtr<KThread> currentSender{}, currentReceiver{};
-    bool isRemoteActive = false;
+    SharedPtr<KThread> currentSender{};
+    KThread *currentReceiver = nullptr;
 };
 
 MESOSPHERE_AUTO_OBJECT_DEFINE_INCREF(LightServerSession);

mesosphere/include/mesosphere/processes/KLightSession.hpp

@@ -24,6 +24,14 @@ class KLightSession final :
     virtual ~KLightSession();
 
     Result Initialize();
+
+    private:
+    friend class KLightClientSession;
+    friend class KLightServerSession;
+
+    void Terminate(bool fromServer);
+    bool isClientAlive = false;
+    bool isServerAlive = false;
 };
 
 MESOSPHERE_AUTO_OBJECT_DEFINE_INCREF(LightSession);

mesosphere/include/mesosphere/threading/KThread.hpp

@@ -242,6 +242,14 @@ class KThread final :
     void CancelKernelSync();
     /// Takes effect immediately
     void CancelKernelSync(Result res);
+    /// Needs to be in kernel sync
+    bool IsInKernelSync() const { return currentWaitList != nullptr; }
+
+    /// User sync
+    constexpr bool IsWaitingSync() const { return isWaitingSync; }
+    void SetWaitingSync(bool isWaitingSync) { this->isWaitingSync = isWaitingSync; }
+    constexpr bool IsSyncCancelled() const { return isSyncCancelled; }
+    void SetSyncCancelled(bool isSyncCancelled) { this->isSyncCancelled = isSyncCancelled; }
 
     /// Takes effect when critical section is left
     void HandleSyncObjectSignaled(KSynchronizationObject *syncObj);
@@ -295,7 +303,7 @@ private:
     uint basePriority = 64, priority = 64;
     int currentCoreId = -1;
     ulong affinityMask = 0;
-    bool cancelled = false;
+    bool isSyncCancelled = false;
     bool isWaitingSync = false;
     uiptr wantedMutex = 0;
     KThread *wantedMutexOwner = nullptr;

mesosphere/source/processes/KLightClientSession.cpp

@@ -1,11 +1,13 @@
 #include <mesosphere/processes/KLightClientSession.hpp>
+#include <mesosphere/processes/KLightSession.hpp>
+#include <mesosphere/threading/KScopedCriticalSection.hpp>
 
 namespace mesosphere
 {
 
 KLightClientSession::~KLightClientSession()
 {
-    //TODO
+    parent->Terminate(false);
 }
 
 

mesosphere/source/processes/KLightServerSession.cpp

@@ -1,11 +1,13 @@
 #include <mesosphere/processes/KLightServerSession.hpp>
+#include <mesosphere/processes/KLightSession.hpp>
+#include <mesosphere/threading/KScopedCriticalSection.hpp>
 
 namespace mesosphere
 {
 
 KLightServerSession::~KLightServerSession()
 {
-    //TODO
+    Terminate(true);
 }
 
 bool KLightServerSession::IsSignaled() const
@@ -13,5 +15,30 @@ bool KLightServerSession::IsSignaled() const
     return false; // TODO
 }
 
+void KLightServerSession::Terminate(bool fromServer)
+{
+    SharedPtr<KThread> curSender{std::move(currentSender)};
+    {
+        KScopedCriticalSection critsec{};
+        if (fromServer) {
+            parent->isServerAlive = false; // buggy in official kernel -- where it sets it outside of critical section
+        } else {
+            parent->isClientAlive = false;
+        }
+        if (curSender != nullptr) {
+            kassert(curSender->GetSchedulingStatus() == KThread::SchedulingStatus::Paused && curSender->IsInKernelSync());
+            curSender->CancelKernelSync(ResultKernelConnectionClosed()); //TODO check
+            currentSender = nullptr;
+            currentReceiver = nullptr;
+        }
+
+        for (auto &&sender : senderThreads) {
+            kassert(sender.GetSchedulingStatus() == KThread::SchedulingStatus::Paused && sender.IsInKernelSync());
+            sender.CancelKernelSync(ResultKernelConnectionClosed()); //TODO check
+        }
+
+        KThread::ResumeAllFromKernelSync(receiverThreads);
+    }
+}
 
 }

mesosphere/source/processes/KLightSession.cpp

@@ -11,11 +11,16 @@ KLightSession::~KLightSession()
 Result KLightSession::Initialize()
 {
     SetClientServerParent();
-    client.isRemoteActive = true;
-    server.isRemoteActive = true;
+    isClientAlive = true;
+    isServerAlive = true;
 
     SetResourceOwner(KCoreContext::GetCurrentInstance().GetCurrentProcess());
     return ResultSuccess();
 }
 
+void KLightSession::Terminate(bool fromServer)
+{
+    server.Terminate(fromServer);
+}
+
 }

mesosphere/source/threading/KThread.cpp

@@ -151,7 +151,7 @@ Result KThread::WaitSynchronizationImpl(int &outId, KSynchronizationObject **syn
         if (IsDying()) {
             return ResultKernelThreadTerminating();
         }
-        if (cancelled) {
+        if (isSyncCancelled) {
             return ResultKernelCancelled();
         }