209 for (uint to_idx = 0; to_idx < num_regions; to_idx++) {
210 ShenandoahHeapRegion* region = regions->get(to_idx);
211 if (! region->is_humongous() &&
212 ! region->is_pinned() &&
213 ! region->is_root() &&
214 ! _heap->in_collection_set(region)) {
215
216 free_set->add_region(region);
217 }
218 }
219 log_debug(gc, ergo)("got "SIZE_FORMAT" cset regions", collection_set->count());
220 log_debug(gc, ergo)("got "SIZE_FORMAT" root regions", _root_regions->count());
221 }
222
223 void ShenandoahPartialGC::do_partial_collection() {
224
225 _heap->gc_timer()->register_gc_start();
226 {
227 GCTraceTime(Info, gc) time("Pause Partial", _heap->gc_timer(), GCCause::_no_gc, true);
228
229 COMPILER2_PRESENT(DerivedPointerTable::clear());
230
231 {
232 ClassLoaderDataGraph::clear_claimed_marks();
233 ShenandoahRootProcessor rp(_heap, _heap->workers()->active_workers());
234 ShenandoahPartialCollectionTask partial_task(&rp, _root_regions);
235 _heap->workers()->run_task(&partial_task);
236 }
237
238 COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
239
240 if (! _heap->cancelled_concgc()) {
241 ShenandoahHeap::ShenandoahHeapLock heap_lock(_heap);
242 uint num_cset = _heap->collection_set()->count();
243 for (uint i = 0; i < num_cset; i++) {
244 ShenandoahHeapRegion* r = _heap->collection_set()->get(i);
245 _heap->decrease_used(r->used());
246 r->recycle();
247 _heap->free_regions()->add_region(r);
248 }
249
250 reset();
251 }
252 }
253 _heap->gc_timer()->register_gc_end();
254 }
255
256 void ShenandoahPartialGC::reset() {
257 _heap->collection_set()->clear();
258 _heap->clear_cset_fast_test();
259 _root_regions->clear();
260 }
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209 for (uint to_idx = 0; to_idx < num_regions; to_idx++) {
210 ShenandoahHeapRegion* region = regions->get(to_idx);
211 if (! region->is_humongous() &&
212 ! region->is_pinned() &&
213 ! region->is_root() &&
214 ! _heap->in_collection_set(region)) {
215
216 free_set->add_region(region);
217 }
218 }
219 log_debug(gc, ergo)("got "SIZE_FORMAT" cset regions", collection_set->count());
220 log_debug(gc, ergo)("got "SIZE_FORMAT" root regions", _root_regions->count());
221 }
222
223 void ShenandoahPartialGC::do_partial_collection() {
224
225 _heap->gc_timer()->register_gc_start();
226 {
227 GCTraceTime(Info, gc) time("Pause Partial", _heap->gc_timer(), GCCause::_no_gc, true);
228
229 if (ShenandoahVerify || VerifyShenandoahMatrix) {
230 log_debug(gc, ergo)("Verifying before partial collection");
231 _heap->verify_heap_reachable_at_safepoint();
232 log_debug(gc, ergo)("Verification passed");
233 }
234
235 COMPILER2_PRESENT(DerivedPointerTable::clear());
236
237 {
238 ClassLoaderDataGraph::clear_claimed_marks();
239 ShenandoahRootProcessor rp(_heap, _heap->workers()->active_workers());
240 ShenandoahPartialCollectionTask partial_task(&rp, _root_regions);
241 _heap->workers()->run_task(&partial_task);
242 }
243
244 COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
245
246 if (! _heap->cancelled_concgc()) {
247 if (ShenandoahVerify || VerifyShenandoahMatrix) {
248 log_debug(gc, ergo)("Verifying after partial collection");
249 _heap->verify_heap_reachable_at_safepoint();
250 log_debug(gc, ergo)("Verification passed");
251 }
252
253 ShenandoahHeap::ShenandoahHeapLock heap_lock(_heap);
254 uint num_cset = _heap->collection_set()->count();
255 for (uint i = 0; i < num_cset; i++) {
256 ShenandoahHeapRegion* r = _heap->collection_set()->get(i);
257 _heap->decrease_used(r->used());
258 r->recycle();
259 _heap->free_regions()->add_region(r);
260 }
261
262 reset();
263 }
264 }
265 _heap->gc_timer()->register_gc_end();
266 }
267
268 void ShenandoahPartialGC::reset() {
269 _heap->collection_set()->clear();
270 _heap->clear_cset_fast_test();
271 _root_regions->clear();
272 }
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