src/share/vm/prims/jvm.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

@@ -22,10 +22,11 @@
  *
  */
 
 #include "precompiled.hpp"
 #include "classfile/classLoader.hpp"
+#include "classfile/classLoaderExt.hpp"
 #include "classfile/javaAssertions.hpp"
 #include "classfile/javaClasses.hpp"
 #include "classfile/symbolTable.hpp"
 #include "classfile/systemDictionary.hpp"
 #if INCLUDE_CDS

@@ -391,10 +392,18 @@
         (Arguments::mode() != Arguments::_int)) {
       PUTPROP(props, "sun.management.compiler", compiler_name);
     }
   }
 
+  const char* enableSharedLookupCache = "false";
+#if INCLUDE_CDS
+  if (ClassLoaderExt::is_lookup_cache_enabled()) {
+    enableSharedLookupCache = "true";
+  }
+#endif
+  PUTPROP(props, "sun.cds.enableSharedLookupCache", enableSharedLookupCache);
+
   return properties;
 JVM_END
 
 
 /*

@@ -764,10 +773,40 @@
   JVMWrapper("JVM_ResolveClass");
   if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented");
 JVM_END
 
 
+JVM_ENTRY(jboolean, JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname))
+  JVMWrapper("JVM_KnownToNotExist");
+#if INCLUDE_CDS
+  return ClassLoaderExt::known_to_not_exist(env, loader, classname, CHECK_(false));
+#else
+  return false;
+#endif
+JVM_END
+
+
+JVM_ENTRY(jobjectArray, JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader))
+  JVMWrapper("JVM_GetResourceLookupCacheURLs");
+#if INCLUDE_CDS
+  return ClassLoaderExt::get_lookup_cache_urls(env, loader, CHECK_NULL);
+#else
+  return NULL;
+#endif
+JVM_END
+
+
+JVM_ENTRY(jintArray, JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name))
+  JVMWrapper("JVM_GetResourceLookupCache");
+#if INCLUDE_CDS
+  return ClassLoaderExt::get_lookup_cache(env, loader, resource_name, CHECK_NULL);
+#else
+  return NULL;
+#endif
+JVM_END
+
+
 // Returns a class loaded by the bootstrap class loader; or null
 // if not found.  ClassNotFoundException is not thrown.
 //
 // Rationale behind JVM_FindClassFromBootLoader
 // a> JVM_FindClassFromClassLoader was never exported in the export tables.