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8228720: Shenandoah: Implementation of concurrent class unloading

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Reviewed-by: rkennke
This commit is contained in:
Zhengyu Gu 2019-11-27 11:52:57 -05:00
parent 6cd20759b6
commit 0a5505f7e9
34 changed files with 1785 additions and 220 deletions
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9
src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
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@ -28,6 +28,8 @@
#include "classfile/stringTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "gc/shared/oopStorageParState.inline.hpp"
#include "gc/shenandoah/shenandoahClosures.inline.hpp"
#include "gc/shenandoah/shenandoahConcurrentRoots.hpp"
#include "gc/shenandoah/shenandoahHeuristics.hpp"
#include "gc/shenandoah/shenandoahRootProcessor.hpp"
#include "gc/shenandoah/shenandoahTimingTracker.hpp"
@ -265,14 +267,19 @@ void ShenandoahRootScanner<ITR>::strong_roots_do(uint worker_id, OopClosure* oop
template <typename IsAlive, typename KeepAlive>
void ShenandoahRootUpdater::roots_do(uint worker_id, IsAlive* is_alive, KeepAlive* keep_alive) {
CodeBlobToOopClosure update_blobs(keep_alive, CodeBlobToOopClosure::FixRelocations);
ShenandoahCodeBlobAndDisarmClosure blobs_and_disarm_Cl(keep_alive);
CodeBlobToOopClosure* codes_cl = ShenandoahConcurrentRoots::can_do_concurrent_class_unloading() ?
static_cast<CodeBlobToOopClosure*>(&blobs_and_disarm_Cl) :
static_cast<CodeBlobToOopClosure*>(&update_blobs);
CLDToOopClosure clds(keep_alive, ClassLoaderData::_claim_strong);
_serial_roots.oops_do(keep_alive, worker_id);
_vm_roots.oops_do(keep_alive, worker_id);
_thread_roots.oops_do(keep_alive, NULL, worker_id);
_cld_roots.cld_do(&clds, worker_id);
_code_roots.code_blobs_do(&update_blobs, worker_id);
_thread_roots.oops_do(keep_alive, NULL, worker_id);
_serial_weak_roots.weak_oops_do(is_alive, keep_alive, worker_id);
_weak_roots.weak_oops_do(is_alive, keep_alive, worker_id);