Delete some dead code in finalizer loop

src/coreclr/vm/appdomain.cpp

@@ -4122,15 +4122,6 @@ AppDomain::RaiseAssemblyResolveEvent(
     RETURN pAssembly;
 } // AppDomain::RaiseAssemblyResolveEvent
 
-enum WorkType
-{
-    WT_UnloadDomain = 0x1,
-    WT_ThreadAbort = 0x2,
-    WT_FinalizerThread = 0x4
-};
-
-static Volatile<DWORD> s_WorkType = 0;
-
 void SystemDomain::ProcessDelayedUnloadLoaderAllocators()
 {
     CONTRACTL

src/coreclr/vm/finalizerthread.cpp

@@ -312,7 +312,7 @@ VOID FinalizerThread::FinalizerThreadWorker(void *args)
         // Setting the event here, instead of at the bottom of the loop, could
         // cause us to skip draining the Q, if the request is made as soon as
         // the app starts running.
-        SignalFinalizationDone(TRUE);
+        SignalFinalizationDone();
 #endif //0
 
         WaitForFinalizerEvent (hEventFinalizer);
@@ -410,7 +410,7 @@ VOID FinalizerThread::FinalizerThreadWorker(void *args)
         // race in that another thread starting a drain, as we leave a drain, may
         // consider itself satisfied by the drain that just completed.  This is
         // acceptable.
-        SignalFinalizationDone(TRUE);
+        SignalFinalizationDone();
     }
 
     if (s_InitializedFinalizerThreadForPlatform)
@@ -538,19 +538,15 @@ void FinalizerThread::FinalizerThreadCreate()
     }
 }
 
-void FinalizerThread::SignalFinalizationDone(BOOL fFinalizer)
+void FinalizerThread::SignalFinalizationDone()
 {
     WRAPPER_NO_CONTRACT;
 
-    if (fFinalizer)
-    {
-        InterlockedAnd((LONG*)&g_FinalizerWaiterStatus, ~FWS_WaitInterrupt);
-    }
     hEventFinalizerDone->Set();
 }
 
 // Wait for the finalizer thread to complete one pass.
-void FinalizerThread::FinalizerThreadWait(DWORD timeout)
+void FinalizerThread::FinalizerThreadWait()
 {
     ASSERT(hEventFinalizerDone->IsValid());
     ASSERT(hEventFinalizer->IsValid());
@@ -569,44 +565,10 @@ void FinalizerThread::FinalizerThreadWait(DWORD timeout)
             g_pRCWCleanupList->CleanupWrappersInCurrentCtxThread();
 #endif // FEATURE_COMINTEROP
 
-        ULONGLONG startTime = CLRGetTickCount64();
-        ULONGLONG endTime;
-        if (timeout == INFINITE)
-        {
-            endTime = MAXULONGLONG;
-        }
-        else
-        {
-            endTime = timeout + startTime;
-        }
-
-        while (TRUE)
-        {
-            hEventFinalizerDone->Reset();
-            EnableFinalization();
+        hEventFinalizerDone->Reset();
 
-            //----------------------------------------------------
-            // Do appropriate wait and pump messages if necessary
-            //----------------------------------------------------
+        EnableFinalization();
 
-            DWORD status = hEventFinalizerDone->Wait(timeout,TRUE);
-            if (status != WAIT_TIMEOUT && !(g_FinalizerWaiterStatus & FWS_WaitInterrupt))
-            {
-                return;
-            }
-            // recalculate timeout
-            if (timeout != INFINITE)
-            {
-                ULONGLONG curTime = CLRGetTickCount64();
-                if (curTime >= endTime)
-                {
-                    return;
-                }
-                else
-                {
-                    timeout = (DWORD)(endTime - curTime);
-                }
-            }
-        }
+        hEventFinalizerDone->Wait(INFINITE,TRUE);
     }
 }

src/coreclr/vm/finalizerthread.h

@@ -65,12 +65,9 @@ class FinalizerThread
         }
     }
 
-    static void FinalizerThreadWait(DWORD timeout = INFINITE);
+    static void FinalizerThreadWait();
 
-    // We wake up a wait for finaliation for two reasons:
-    // if fFinalizer=TRUE, we have finished finalization.
-    // if fFinalizer=FALSE, the timeout for finalization is changed, and AD unload helper thread is notified.
-    static void SignalFinalizationDone(BOOL fFinalizer);
+    static void SignalFinalizationDone();
 
     static VOID FinalizerThreadWorker(void *args);
     static DWORD WINAPI FinalizerThreadStart(void *args);

src/coreclr/vm/vars.cpp

@@ -194,8 +194,6 @@ GVAL_IMPL(SIZE_T, g_runtimeVirtualSize);
 
 bool g_fManagedAttach = false;
 
-DWORD g_FinalizerWaiterStatus = 0;
-
 //
 // Do we own the lifetime of the process, ie. is it an EXE?
 //

src/coreclr/vm/vars.hpp

@@ -467,13 +467,6 @@ inline BOOL    IsAtProcessExit()
     return g_fProcessDetach;
 }
 
-enum FWStatus
-{
-    FWS_WaitInterrupt = 0x00000001,
-};
-
-EXTERN DWORD g_FinalizerWaiterStatus;
-
 #if defined(TARGET_UNIX) && defined(FEATURE_EVENT_TRACE)
 extern Volatile<BOOL> g_TriggerHeapDump;
 #endif // TARGET_UNIX