src/share/vm/prims/whitebox.cpp

rev 6864 : 8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
Summary: Implemented the interface in sun.misc.URLClassPath and corresponding JVM_XXX APIs
Reviewed-by: mchung, acorn, jiangli, dholmes
rev 6867 : 8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
Summary: Fixed Whitebox.deoptimizeMethod() to deoptimize all OSR versions of the method.
Reviewed-by: kvn, iignatyev

*** 102,111 ****
--- 102,133 ----
    ClassLoaderDataGraph::classes_do(&closure);
  
    return closure.found();
  WB_END
  
+ WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
+   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+   const char* class_name = env->GetStringUTFChars(name, NULL);
+   jboolean result = JVM_KnownToNotExist(env, loader, class_name);
+   env->ReleaseStringUTFChars(name, class_name);
+   return result;
+ WB_END
+ 
+ WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
+   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+   return JVM_GetResourceLookupCacheURLs(env, loader);
+ WB_END
+ 
+ WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
+   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+   const char* resource_name = env->GetStringUTFChars(name, NULL);
+   jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
+ 
+   env->ReleaseStringUTFChars(name, resource_name);
+   return result;
+ WB_END
+ 
  WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
    return (jlong)Arguments::max_heap_for_compressed_oops();
  }
  WB_END
  
*** 380,402 ****
    jmethodID jmid = reflected_method_to_jmid(thread, env, method);
    int result = 0;
    CHECK_JNI_EXCEPTION_(env, result);
    MutexLockerEx mu(Compile_lock);
    methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
-   nmethod* code;
    if (is_osr) {
!     int bci = InvocationEntryBci;
!     while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) {
!       code->mark_for_deoptimization();
!       ++result;
!       bci = code->osr_entry_bci() + 1;
!     }
!   } else {
!     code = mh->code();
!   }
!   if (code != NULL) {
!     code->mark_for_deoptimization();
      ++result;
    }
    result += CodeCache::mark_for_deoptimization(mh());
    if (result > 0) {
      VM_Deoptimize op;
--- 402,415 ----
    jmethodID jmid = reflected_method_to_jmid(thread, env, method);
    int result = 0;
    CHECK_JNI_EXCEPTION_(env, result);
    MutexLockerEx mu(Compile_lock);
    methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
    if (is_osr) {
!     result += mh->mark_osr_nmethods();
!   } else if (mh->code() != NULL) {
!     mh->code()->mark_for_deoptimization();
      ++result;
    }
    result += CodeCache::mark_for_deoptimization(mh());
    if (result > 0) {
      VM_Deoptimize op;
*** 937,946 ****
--- 950,964 ----
    {CC"getObjectAddress",   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
    {CC"getObjectSize",      CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize     },
    {CC"isObjectInOldGen",   CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen  },
    {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
    {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
+   {CC"classKnownToNotExist",
+                            CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
+   {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;",    (void*)&WB_GetLookupCacheURLs},
+   {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
+                                                       (void*)&WB_GetLookupCacheMatches},
    {CC"parseCommandLine",
        CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
        (void*) &WB_ParseCommandLine
    },
    {CC"getCompressedOopsMaxHeapSize", CC"()J",