Added the serviceability-dev back.
Thanks,
Serguei
On 2/4/19 07:18, [email protected] wrote:
open webrev at http://cr.openjdk.java.net/~coleenp/2019/8139551.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8139551
The links.
Thanks,
Coleen
On 2/4/19 10:08 AM, [email protected] wrote:
Summary: Walk code cache and deoptimize once per redefinition.*
*This change touches the AOT and code cache code. I tried to
describe it in the comments in the RFE. Basically, for redefinition,
we walk the code cache per class redefined in order to find
evol_method dependencies, then deoptimize if we find them, and then
walk the code cache again to mark the deoptimized nmethods as
not_entrant.
I replaced this with only marking any nmethods for the class's
methods to deoptimize (following InstanceKlass::_methods), also
marking aot methods dependent on the class, and then doing the code
cache walk to follow the evol_method dependencies at the end of
redefinition for all the classes. The new code uses the
Method::is_old() flag rather than comparing each method in the
InstanceKlass. Then deoptimization and marking not_entrant is done
once at the end of the redefinition as well.
Tested with tier1-6, all the redefinition tests locally:
make test TEST=open/test/hotspot/jtreg/vmTestbase/nsk/jvmti >&jvmti.out
make test TEST=open/test/hotspot/jtreg/vmTestbase/nsk/jdi >&jdi.out
make test TEST=open/test/hotspot/jtreg/runtime/RedefineTests
>&redefine.out
make test TEST=open/test/jdk/java/lang/instrument >&instrument.out
new test, and JMH test (see CR for results).
Thanks,
Coleen
