src/share/vm/memory/metaspaceShared.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

*** 22,31 ****
--- 22,32 ----
   *
   */
  
  #include "precompiled.hpp"
  #include "classfile/dictionary.hpp"
+ #include "classfile/classLoaderExt.hpp"
  #include "classfile/loaderConstraints.hpp"
  #include "classfile/placeholders.hpp"
  #include "classfile/sharedClassUtil.hpp"
  #include "classfile/symbolTable.hpp"
  #include "classfile/systemDictionary.hpp"
*** 37,46 ****
--- 38,48 ----
  #include "oops/objArrayOop.hpp"
  #include "oops/oop.inline.hpp"
  #include "runtime/signature.hpp"
  #include "runtime/vm_operations.hpp"
  #include "runtime/vmThread.hpp"
+ #include "utilities/hashtable.hpp"
  #include "utilities/hashtable.inline.hpp"
  
  PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
  
  int MetaspaceShared::_max_alignment = 0;
*** 531,540 ****
--- 533,544 ----
    SystemDictionary::copy_table(&md_top, md_end);
    ClassLoader::verify();
    ClassLoader::copy_package_info_table(&md_top, md_end);
    ClassLoader::verify();
  
+   ClassLoaderExt::copy_lookup_cache_to_archive(&md_top, md_end);
+ 
    // Write the other data to the output array.
    WriteClosure wc(md_top, md_end);
    MetaspaceShared::serialize(&wc);
    md_top = wc.get_top();
  
*** 743,752 ****
--- 747,758 ----
      class_count += preload_and_dump(ExtraSharedClassListFile, class_promote_order,
                                      THREAD);
    }
    tty->print_cr("Loading classes to share: done.");
  
+   ClassLoaderExt::init_lookup_cache(THREAD);
+ 
    if (PrintSharedSpaces) {
      tty->print_cr("Shared spaces: preloaded %d classes", class_count);
    }
  
    // Rewrite and link classes
*** 1054,1063 ****
--- 1060,1071 ----
  
    len = *(intptr_t*)buffer;     // skip over package info table char[] arrays.
    buffer += sizeof(intptr_t);
    buffer += len;
  
+   buffer = ClassLoaderExt::restore_lookup_cache_from_archive(buffer);
+ 
    intptr_t* array = (intptr_t*)buffer;
    ReadClosure rc(&array);
    serialize(&rc);
  
    // Close the mapinfo file