Could you move this code:
// Mark dependent AOT nmethods, which are only found via the class
redefined.
AOTLoader::mark_evol_dependent_methods(ik);
into this function:
CodeCache::mark_for_evol_deoptimization(ik)
The rest looks good.
dl
On 2/4/19 7:08 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
