CoreCLR initialization failures logging

src/coreclr/binder/utils.cpp

@@ -150,56 +150,68 @@ namespace BINDER_SPACE
         isNativeImage = false;
 
         HRESULT pathResult = S_OK;
-        IF_FAIL_GO(pathResult = GetNextPath(paths, startPos, outPath));
-        if (pathResult == S_FALSE)
+        while(true)
         {
-            return S_FALSE;
-        }
-
-        if (Path::IsRelative(outPath))
-        {
-            GO_WITH_HRESULT(E_INVALIDARG);
-        }
-
-        {
-            // Find the beginning of the simple name
-            SString::CIterator iSimpleNameStart = outPath.End();
-
-            if (!outPath.FindBack(iSimpleNameStart, DIRECTORY_SEPARATOR_CHAR_W))
-            {
-                iSimpleNameStart = outPath.Begin();
-            }
-            else
+            IF_FAIL_GO(pathResult = GetNextPath(paths, startPos, outPath));
+            if (pathResult == S_FALSE)
             {
-                // Advance past the directory separator to the first character of the file name
-                iSimpleNameStart++;
+                return S_FALSE;
             }
 
-            if (iSimpleNameStart == outPath.End())
+            if (Path::IsRelative(outPath))
             {
                 GO_WITH_HRESULT(E_INVALIDARG);
             }
 
-            const SString sNiDll(SString::Literal, W(".ni.dll"));
-            const SString sNiExe(SString::Literal, W(".ni.exe"));
-            const SString sDll(SString::Literal, W(".dll"));
-            const SString sExe(SString::Literal, W(".exe"));
-
-            if (!dllOnly && (outPath.EndsWithCaseInsensitive(sNiDll) ||
-                outPath.EndsWithCaseInsensitive(sNiExe)))
-            {
-                simpleName.Set(outPath, iSimpleNameStart, outPath.End() - 7);
-                isNativeImage = true;
-            }
-            else if (outPath.EndsWithCaseInsensitive(sDll) ||
-                (!dllOnly && outPath.EndsWithCaseInsensitive(sExe)))
-            {
-                simpleName.Set(outPath, iSimpleNameStart, outPath.End() - 4);
-            }
-            else
             {
-                // Invalid filename
-                GO_WITH_HRESULT(E_INVALIDARG);
+                // Find the beginning of the simple name
+                SString::CIterator iSimpleNameStart = outPath.End();
+
+                if (!outPath.FindBack(iSimpleNameStart, DIRECTORY_SEPARATOR_CHAR_W))
+                {
+                    iSimpleNameStart = outPath.Begin();
+                }
+                else
+                {
+                    // Advance past the directory separator to the first character of the file name
+                    iSimpleNameStart++;
+                }
+
+                if (iSimpleNameStart == outPath.End())
+                {
+                    GO_WITH_HRESULT(E_INVALIDARG);
+                }
+
+                const SString sNiDll(SString::Literal, W(".ni.dll"));
+                const SString sNiExe(SString::Literal, W(".ni.exe"));
+                const SString sDll(SString::Literal, W(".dll"));
+                const SString sExe(SString::Literal, W(".exe"));
+
+                if (dllOnly && (outPath.EndsWithCaseInsensitive(sExe) ||
+                    outPath.EndsWithCaseInsensitive(sNiExe)))
+                {
+                    // Skip exe files when the caller requested only dlls
+                    continue;
+                }
+
+                if (outPath.EndsWithCaseInsensitive(sNiDll) ||
+                    outPath.EndsWithCaseInsensitive(sNiExe))
+                {
+                    simpleName.Set(outPath, iSimpleNameStart, outPath.End() - 7);
+                    isNativeImage = true;
+                }
+                else if (outPath.EndsWithCaseInsensitive(sDll) ||
+                    outPath.EndsWithCaseInsensitive(sExe))
+                {
+                    simpleName.Set(outPath, iSimpleNameStart, outPath.End() - 4);
+                }
+                else
+                {
+                    // Invalid filename
+                    GO_WITH_HRESULT(E_INVALIDARG);
+                }
+
+                break;
             }
         }
 

src/coreclr/dlls/mscoree/exports.cpp

@@ -158,6 +158,26 @@ static void ConvertConfigPropertiesToUnicode(
     *propertyValuesWRef = propertyValuesW;
 }
 
+coreclr_error_writer_callback_fn g_errorWriter = nullptr;
+
+//
+// Set callback for writing error logging
+//
+// Parameters:
+//  errorWriter             - callback that will be called for each line of the error info
+//                          - passing in NULL removes a callback that was previously set
+//
+// Returns:
+//  S_OK
+//
+extern "C"
+DLLEXPORT
+int coreclr_set_error_writer(coreclr_error_writer_callback_fn error_writer)
+{
+    g_errorWriter = error_writer;
+    return S_OK;
+}
+
 #ifdef FEATURE_GDBJIT
 GetInfoForMethodDelegate getInfoForMethodDelegate = NULL;
 extern "C" int coreclr_create_delegate(void*, unsigned int, const char*, const char*, const char*, void**);
@@ -432,3 +452,16 @@ int coreclr_execute_assembly(
 
     return hr;
 }
+
+void LogErrorToHost(const char* format, ...)
+{
+    if (g_errorWriter != NULL)
+    {
+        char messageBuffer[1024];
+        va_list args;
+        va_start(args, format);
+        _vsnprintf_s(messageBuffer, ARRAY_SIZE(messageBuffer), _TRUNCATE, format, args);
+        g_errorWriter(messageBuffer);
+        va_end(args);
+    }
+}

src/coreclr/dlls/mscoree/mscorwks_ntdef.src

@@ -22,6 +22,7 @@ EXPORTS
         coreclr_create_delegate
         coreclr_execute_assembly
         coreclr_initialize
+        coreclr_set_error_writer
         coreclr_shutdown
         coreclr_shutdown_2
 

src/coreclr/dlls/mscoree/mscorwks_unixexports.src

@@ -2,6 +2,7 @@
 coreclr_create_delegate
 coreclr_execute_assembly
 coreclr_initialize
+coreclr_set_error_writer
 coreclr_shutdown
 coreclr_shutdown_2
 

src/coreclr/gc/env/gcenv.ee.h

@@ -94,6 +94,8 @@ class GCToEEInterface
     static uint32_t GetCurrentProcessCpuCount();
 
     static void DiagAddNewRegion(int generation, uint8_t* rangeStart, uint8_t* rangeEnd, uint8_t* rangeEndReserved);
+
+    static void LogErrorToHost(const char *message);
 };
 
 #endif // __GCENV_EE_H__

src/coreclr/gc/gc.cpp

@@ -13575,13 +13575,17 @@ HRESULT gc_heap::initialize_gc (size_t soh_segment_size,
         gc_log = CreateLogFile(GCConfig::GetLogFile(), false);
 
         if (gc_log == NULL)
+        {
+            GCToEEInterface::LogErrorToHost("Cannot create log file");
             return E_FAIL;
+        }
 
         // GCLogFileSize in MBs.
         gc_log_file_size = static_cast<size_t>(GCConfig::GetLogFileSize());
 
         if (gc_log_file_size <= 0 || gc_log_file_size > 500)
         {
+            GCToEEInterface::LogErrorToHost("Invalid log file size (valid size needs to be larger than 0 and smaller than 500)");
             fclose (gc_log);
             return E_FAIL;
         }
@@ -13591,7 +13595,7 @@ HRESULT gc_heap::initialize_gc (size_t soh_segment_size,
         if (!gc_log_buffer)
         {
             fclose(gc_log);
-            return E_FAIL;
+            return E_OUTOFMEMORY;
         }
 
         memset (gc_log_buffer, '*', gc_log_buffer_size);
@@ -13606,13 +13610,16 @@ HRESULT gc_heap::initialize_gc (size_t soh_segment_size,
         gc_config_log = CreateLogFile(GCConfig::GetConfigLogFile(), true);
 
         if (gc_config_log == NULL)
+        {
+            GCToEEInterface::LogErrorToHost("Cannot create log file");
             return E_FAIL;
+        }
 
         gc_config_log_buffer = new (nothrow) uint8_t [gc_config_log_buffer_size];
         if (!gc_config_log_buffer)
         {
             fclose(gc_config_log);
-            return E_FAIL;
+            return E_OUTOFMEMORY;
         }
 
         compact_ratio = static_cast<int>(GCConfig::GetCompactRatio());
@@ -13739,6 +13746,7 @@ HRESULT gc_heap::initialize_gc (size_t soh_segment_size,
     else
     {
         assert (!"cannot use regions without specifying the range!!!");
+        GCToEEInterface::LogErrorToHost("Cannot use regions without specifying the range (using DOTNET_GCRegionRange)");
         return E_FAIL;
     }
 #else //USE_REGIONS
@@ -13862,6 +13870,7 @@ HRESULT gc_heap::initialize_gc (size_t soh_segment_size,
 
     if (!init_semi_shared())
     {
+        GCToEEInterface::LogErrorToHost("PER_HEAP_ISOLATED data members initialization failed");
         hres = E_FAIL;
     }
 
@@ -45537,6 +45546,7 @@ HRESULT GCHeap::Initialize()
 
     if (!WaitForGCEvent->CreateManualEventNoThrow(TRUE))
     {
+        GCToEEInterface::LogErrorToHost("Creation of WaitForGCEvent failed");
         return E_FAIL;
     }
 
@@ -45618,9 +45628,15 @@ HRESULT GCHeap::Initialize()
         int hb_info_size_per_node = hb_info_size_per_proc * procs_per_numa_node;
         uint8_t* numa_mem = (uint8_t*)GCToOSInterface::VirtualReserve (hb_info_size_per_node, 0, 0, numa_node_index);
         if (!numa_mem)
+        {
+            GCToEEInterface::LogErrorToHost("Reservation of numa_mem failed");
             return E_FAIL;
+        }
         if (!GCToOSInterface::VirtualCommit (numa_mem, hb_info_size_per_node, numa_node_index))
+        {
+            GCToEEInterface::LogErrorToHost("Commit of numa_mem failed");
             return E_FAIL;
+        }
 
         heap_balance_info_proc* hb_info_procs = (heap_balance_info_proc*)numa_mem;
         hb_info_numa_nodes[numa_node_index].hb_info_procs = hb_info_procs;

src/coreclr/gc/gccommon.cpp

@@ -17,7 +17,7 @@ IGCHeapInternal* g_theGCHeap;
 IGCHandleManager* g_theGCHandleManager;
 
 #ifdef BUILD_AS_STANDALONE
-IGCToCLR* g_theGCToCLR;
+IGCToCLR2* g_theGCToCLR;
 VersionInfo g_runtimeSupportedVersion;
 #endif // BUILD_AS_STANDALONE
 

src/coreclr/gc/gcenv.ee.standalone.inl

@@ -9,7 +9,7 @@
 
 // The singular interface instance. All calls in GCToEEInterface
 // will be forwarded to this interface instance.
-extern IGCToCLR* g_theGCToCLR;
+extern IGCToCLR2* g_theGCToCLR;
 
 // GC version that the current runtime supports
 extern VersionInfo g_runtimeSupportedVersion;
@@ -314,4 +314,12 @@ inline void GCToEEInterface::DiagAddNewRegion(int generation, uint8_t* rangeStar
     g_theGCToCLR->DiagAddNewRegion(generation, rangeStart, rangeEnd, rangeEndReserved);
 }
 
+inline void GCToEEInterface::LogErrorToHost(const char *message)
+{
+    if (g_runtimeSupportedVersion.MajorVersion >= GC_INTERFACE2_MAJOR_VERSION)
+    {
+        g_theGCToCLR->LogErrorToHost(message);
+    }
+}
+
 #endif // __GCTOENV_EE_STANDALONE_INL__

src/coreclr/gc/gcinterface.ee.h

@@ -448,4 +448,11 @@ class IGCToCLR {
     void DiagAddNewRegion(int generation, uint8_t* rangeStart, uint8_t* rangeEnd, uint8_t* rangeEndReserved) = 0;
 };
 
+class IGCToCLR2 : public IGCToCLR {
+public:
+
+    virtual
+    void LogErrorToHost(const char *message) = 0;
+};
+
 #endif // _GCINTERFACE_EE_H_

src/coreclr/gc/gcinterface.h

@@ -6,13 +6,17 @@
 
 // The major version of the GC/EE interface. Breaking changes to this interface
 // require bumps in the major version number.
-#define GC_INTERFACE_MAJOR_VERSION 5
+#define GC_INTERFACE_MAJOR_VERSION 6
 
 // The minor version of the GC/EE interface. Non-breaking changes are required
 // to bump the minor version number. GCs and EEs with minor version number
 // mismatches can still interopate correctly, with some care.
 #define GC_INTERFACE_MINOR_VERSION 1
 
+// The major version of the GC/EE interface. Breaking changes to this interface
+// require bumps in the major version number.
+#define GC_INTERFACE2_MAJOR_VERSION 6
+
 struct ScanContext;
 struct gc_alloc_context;
 class CrawlFrame;

src/coreclr/gc/gcload.cpp

@@ -75,7 +75,7 @@ GC_Initialize(
 
 #ifdef BUILD_AS_STANDALONE
     assert(clrToGC != nullptr);
-    g_theGCToCLR = clrToGC;
+    g_theGCToCLR = (IGCToCLR2*)clrToGC;
 #else
     UNREFERENCED_PARAMETER(clrToGC);
     assert(clrToGC == nullptr);
@@ -88,6 +88,7 @@ GC_Initialize(
 
     if (!GCToOSInterface::Initialize())
     {
+        GCToEEInterface::LogErrorToHost("Failed to initialize GCToOSInterface");
         return E_FAIL;
     }
 #endif

src/coreclr/gc/sample/gcenv.ee.cpp

@@ -358,3 +358,7 @@ uint32_t GCToEEInterface::GetCurrentProcessCpuCount()
 void GCToEEInterface::DiagAddNewRegion(int generation, uint8_t* rangeStart, uint8_t* rangeEnd, uint8_t* rangeEndReserved)
 {
 }
+
+void GCToEEInterface::LogErrorToHost(const char *message)
+{
+}