archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 07:14:30 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8223213: Implement fast class initialization checks on x86-64

Browse source 
Reviewed-by: kvn, redestad, dholmes, mdoerr, coleenp
This commit is contained in:
Vladimir Ivanov 2019-05-30 13:39:13 +03:00
parent ba723fbdfb
commit e72bfe15ad
33 changed files with 734 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

21
src/hotspot/share/oops/cpCache.cpp
View file

@ -261,11 +261,22 @@ void ConstantPoolCacheEntry::set_direct_or_vtable_call(Bytecodes::Code invoke_co
method->name() != vmSymbols::object_initializer_name()) {
do_resolve = false;
}
// Don't mark invokestatic to method as resolved if the holder class has not yet completed
// initialization. An invokestatic must only proceed if the class is initialized, but if
// we resolve it before then that class initialization check is skipped.
if (invoke_code == Bytecodes::_invokestatic && !method->method_holder()->is_initialized()) {
do_resolve = false;
if (invoke_code == Bytecodes::_invokestatic) {
assert(method->method_holder()->is_initialized() ||
method->method_holder()->is_reentrant_initialization(Thread::current()),
"invalid class initialization state for invoke_static");
if (!VM_Version::supports_fast_class_init_checks() && method->needs_clinit_barrier()) {
// Don't mark invokestatic to method as resolved if the holder class has not yet completed
// initialization. An invokestatic must only proceed if the class is initialized, but if
// we resolve it before then that class initialization check is skipped.
//
// When fast class initialization checks are supported (VM_Version::supports_fast_class_init_checks() == true),
// template interpreter supports fast class initialization check for
// invokestatic which doesn't require call site re-resolution to
// enforce class initialization barrier.
do_resolve = false;
}
}
if (do_resolve) {
set_bytecode_1(invoke_code);