Switch to unified fully managed Overlapped implementation

src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <EnableDefaultItems>false</EnableDefaultItems>
@@ -237,7 +237,6 @@
     <Compile Include="$(BclSourcesRoot)\System\Text\StringBuilder.CoreCLR.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Interlocked.CoreCLR.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Monitor.CoreCLR.cs" />
-    <Compile Include="$(BclSourcesRoot)\System\Threading\Overlapped.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\SynchronizationContext.CoreCLR.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\Thread.CoreCLR.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Threading\ProcessorIdCache.cs" />

src/coreclr/dlls/mscorrc/mscorrc.rc

@@ -405,7 +405,6 @@ BEGIN
     IDS_EE_CANNOTCASTSAME                   "[A]%1 cannot be cast to [B]%2. %3. %4."
     IDS_EE_CANNOTCAST_HELPER_PATH           "Type %s originates from '%s' in the context '%s' at location '%s'"
     IDS_EE_CANNOTCAST_HELPER_BYTE           "Type %s originates from '%s' in the context '%s' in a byte array"
-    IDS_EE_NOTISOMORPHIC                    "Object contains references."
     IDS_EE_INVALID_VT_FOR_CUSTOM_MARHALER   "Type of the VARIANT specified for a parameter with a custom marshaler is not supported by the custom marshaler."
     IDS_EE_BAD_COMEXTENDS_CLASS             "Types extending from COM objects should override all methods of an interface implemented by the base COM class."
     IDS_EE_INTERFACE_NOT_DISPATCH_BASED     "The interface does not support late bound calls since it does not derive from IDispatch."

src/coreclr/dlls/mscorrc/resource.h

@@ -197,7 +197,6 @@
 #define IDS_EE_COM_OBJECT_NO_LONGER_HAS_WRAPPER 0x17d9
 #define IDS_EE_NDIRECT_BADNATL_CALLCONV         0x17df
 #define IDS_EE_CANNOTCAST                       0x17e0
-#define IDS_EE_NOTISOMORPHIC                    0x17e1
 
 #define IDS_EE_NOCUSTOMMARSHALER                0x17e7
 #define IDS_EE_SIZECONTROLOUTOFRANGE            0x17e8

src/coreclr/gc/gcee.cpp

@@ -105,12 +105,10 @@ void GCHeap::UpdatePostGCCounters()
     size_t promoted_finalization_mem = 0;
     size_t total_num_pinned_objects = gc_heap::get_total_pinned_objects();
 
-#ifndef FEATURE_NATIVEAOT
     // if a max gen garbage collection was performed, resync the GC Handle counter;
     // if threads are currently suspended, we do not need to obtain a lock on each handle table
     if (condemned_gen == max_generation)
         total_num_gc_handles = HndCountAllHandles(!IsGCInProgress());
-#endif //FEATURE_NATIVEAOT
 
     // per generation calculation.
     for (int gen_index = 0; gen_index < total_generation_count; gen_index++)

src/coreclr/gc/handletable.cpp

@@ -521,6 +521,7 @@ void HndLogSetEvent(OBJECTHANDLE handle, _UNCHECKED_OBJECTREF value)
         FIRE_EVENT(SetGCHandle, (void *)handle, (void *)value, hndType, generation);
         FIRE_EVENT(PrvSetGCHandle, (void *) handle, (void *)value, hndType, generation);
 
+#ifdef FEATURE_ASYNC_PINNED_HANDLES
         // Also fire the things pinned by Async pinned handles
         if (hndType == HNDTYPE_ASYNCPINNED)
         {
@@ -531,6 +532,7 @@ void HndLogSetEvent(OBJECTHANDLE handle, _UNCHECKED_OBJECTREF value)
                 FIRE_EVENT(SetGCHandle, (void *)overlapped, (void *)to, HNDTYPE_PINNED, generation);
             });
         }
+#endif
     }
 #else
     UNREFERENCED_PARAMETER(handle);
@@ -578,12 +580,14 @@ void HndWriteBarrierWorker(OBJECTHANDLE handle, _UNCHECKED_OBJECTREF value)
         int generation = g_theGCHeap->WhichGeneration(value);
         uint32_t uType = HandleFetchType(handle);
 
+#ifdef FEATURE_ASYNC_PINNED_HANDLES
         //OverlappedData need special treatment: because all user data pointed by it needs to be reported by this handle,
         //its age is consider to be min age of the user data, to be simple, we just make it 0
         if (uType == HNDTYPE_ASYNCPINNED)
         {
             generation = 0;
         }
+#endif
 
         if (uType == HNDTYPE_DEPENDENT)
         {

src/coreclr/gc/handletablepriv.h

@@ -14,6 +14,13 @@
 
 #include "handletable.h"
 
+
+ // Build support for async pinned handles into standalone GC to make it usable with older runtimes
+#if defined(BUILD_AS_STANDALONE) && !defined(FEATURE_NATIVEAOT)
+#define FEATURE_ASYNC_PINNED_HANDLES
+#endif
+
+
 /*--------------------------------------------------------------------------*/
 
 //<TODO>@TODO: find a home for this in a project-level header file</TODO>

src/coreclr/gc/handletablescan.cpp

@@ -815,6 +815,7 @@ void BlockResetAgeMapForBlocksWorker(uint32_t *pdwGen, uint32_t dwClumpMask, Sca
                     if (minAge > thisAge)
                         minAge = thisAge;
 
+#ifdef FEATURE_ASYNC_PINNED_HANDLES
                     GCToEEInterface::WalkAsyncPinned(*pValue, &minAge,
                         [](Object*, Object* to, void* ctx)
                         {
@@ -825,6 +826,7 @@ void BlockResetAgeMapForBlocksWorker(uint32_t *pdwGen, uint32_t dwClumpMask, Sca
                                 *minAge = generation;
                             }
                         });
+#endif
                }
             }
             _ASSERTE(FitsInU1(minAge));
@@ -966,12 +968,15 @@ void BlockVerifyAgeMapForBlocksWorker(uint32_t *pdwGen, uint32_t dwClumpMask, Sc
                 if (!HndIsNullOrDestroyedHandle(*pValue))
                 {
                     VerifyObjectAndAge((*pValue), (*pValue), minAge);
+
+#ifdef FEATURE_ASYNC_PINNED_HANDLES
                     GCToEEInterface::WalkAsyncPinned(*pValue, &minAge,
                         [](Object* from, Object* object, void* age)
                         {
                             uint8_t* minAge = reinterpret_cast<uint8_t*>(age);
                             VerifyObjectAndAge(from, object, *minAge);
                         });
+#endif
 
                     if (uType == HNDTYPE_DEPENDENT)
                     {