6999872: java.awt.Window instantiation leads to JVM CRASH on Windows, JDK7b118+ fastdebug

Reviewed-by: igor, dcherepanov

src/windows/bin/java_md.c

@@ -70,7 +70,11 @@ static void EnsureJreInstallation(const char *jrepath);
  */
 #undef ENABLE_AWT_PRELOAD
 #ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */
-    #define ENABLE_AWT_PRELOAD
+    /* CR6999872: fastdebug crashes if awt library is loaded before JVM is
+     * initialized*/
+    #if !defined(DEBUG)
+        #define ENABLE_AWT_PRELOAD
+    #endif
 #endif
 
 #ifdef ENABLE_AWT_PRELOAD

src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp

@@ -969,12 +969,15 @@ void D3DInitializer::InitImpl()
     }
     D3DPipelineManager *pMgr = D3DPipelineManager::CreateInstance();
     if (pMgr != NULL) {
-        UINT adapterCount = pMgr->adapterCount;
-
-        pAdapterIniters = new D3DAdapterInitializer[adapterCount];
-        for (UINT i=0; i<adapterCount; i++) {
-            pAdapterIniters[i].setAdapter(i);
-            AwtToolkit::GetInstance().GetPreloadThread().AddAction(&pAdapterIniters[i]);
+        // init adapters if we are preloading
+        if (AwtToolkit::GetInstance().GetPreloadThread().OnPreloadThread()) {
+            UINT adapterCount = pMgr->adapterCount;
+
+            pAdapterIniters = new D3DAdapterInitializer[adapterCount];
+            for (UINT i=0; i<adapterCount; i++) {
+                pAdapterIniters[i].setAdapter(i);
+                AwtToolkit::GetInstance().GetPreloadThread().AddAction(&pAdapterIniters[i]);
+            }
         }
     }
 }

src/windows/native/sun/windows/awt_Toolkit.cpp

@@ -1904,6 +1904,11 @@ bool AwtToolkit::PreloadThread::InvokeAndTerminate(void(_cdecl *fn)(void *), voi
     return true;
 }
 
+bool AwtToolkit::PreloadThread::OnPreloadThread()
+{
+    return GetThreadId() == ::GetCurrentThreadId();
+}
+
 /*static*/
 unsigned WINAPI AwtToolkit::PreloadThread::StaticThreadProc(void *param)
 {

src/windows/native/sun/windows/awt_Toolkit.h

@@ -559,6 +559,8 @@ public:
             CriticalSection::Lock lock(threadLock);
             return wrongThread;
         }
+        // returns true if the current thread is "preload" thread
+        bool OnPreloadThread();
 
     private:
         // data access lock