git: openjdk/mobile: 8178349: Cache builtin class loader constraints to avoid re-initializing itable/vtable for shared classes

[duke]

Changeset: 832272da
Author:    Yumin Qi <minqi at openjdk.org>
Date:      2020-05-01 10:58:45 +0000
URL:       https://git.openjdk.java.net/mobile/commit/832272da

8178349: Cache builtin class loader constraints to avoid re-initializing itable/vtable for shared classes

Record loader constraints for built-in class which is loaded by app loader or platform loader in shared archive in dump time.  When the class loaded from shared archive at runtime, directly check loader constraints using the saved info so avoid lengthy relayout i/v-table at class link stage.

Reviewed-by: iklam, ccheung

! src/hotspot/share/classfile/loaderConstraints.hpp
! src/hotspot/share/classfile/systemDictionary.cpp
! src/hotspot/share/classfile/systemDictionary.hpp
! src/hotspot/share/classfile/systemDictionaryShared.cpp
! src/hotspot/share/classfile/systemDictionaryShared.hpp
! src/hotspot/share/interpreter/linkResolver.cpp
! src/hotspot/share/oops/instanceKlass.cpp
! src/hotspot/share/oops/klassVtable.cpp
! src/hotspot/share/runtime/handles.hpp
! src/hotspot/share/runtime/mutexLocker.cpp
! test/hotspot/jtreg/TEST.groups
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/DynamicLoaderConstraintsTest.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/LoaderConstraintsApp.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/LoaderConstraintsTest.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/MyClassLoader.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/MyHttpHandler.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/MyHttpHandlerB.java
+ test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints/MyHttpHandlerC.java