369 
 370     HandleMark hm;  // Discard invalid handles created during gc
 371     save_marks();   // save marks for all gens
 372     // We want to discover references, but not process them yet.
 373     // This mode is disabled in process_discovered_references if the
 374     // generation does some collection work, or in
 375     // enqueue_discovered_references if the generation returns
 376     // without doing any work.
 377     ReferenceProcessor* rp = gen->ref_processor();
 378     // If the discovery of ("weak") refs in this generation is
 379     // atomic wrt other collectors in this configuration, we
 380     // are guaranteed to have empty discovered ref lists.
 381     if (rp->discovery_is_atomic()) {
 382       rp->enable_discovery();
 383       rp->setup_policy(clear_soft_refs);
 384     } else {
 385       // collect() below will enable discovery as appropriate
 386     }
 387     gen->collect(full, clear_soft_refs, size, is_tlab);
 388     if (!rp->enqueuing_is_done()) {
 389       rp->enqueue_discovered_references();


 390     } else {
 391       rp->set_enqueuing_is_done(false);
 392     }
 393     rp->verify_no_references_recorded();
 394   }
 395 
 396   COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
 397 
 398   gen->stat_record()->accumulated_time.stop();
 399 
 400   update_gc_stats(gen, full);
 401 
 402   if (run_verification && VerifyAfterGC) {
 403     HandleMark hm;  // Discard invalid handles created during verification
 404     Universe::verify("After GC");
 405   }
 406 }
 407 
 408 void GenCollectedHeap::do_collection(bool           full,
 409                                      bool           clear_all_soft_refs,

 369 
 370     HandleMark hm;  // Discard invalid handles created during gc
 371     save_marks();   // save marks for all gens
 372     // We want to discover references, but not process them yet.
 373     // This mode is disabled in process_discovered_references if the
 374     // generation does some collection work, or in
 375     // enqueue_discovered_references if the generation returns
 376     // without doing any work.
 377     ReferenceProcessor* rp = gen->ref_processor();
 378     // If the discovery of ("weak") refs in this generation is
 379     // atomic wrt other collectors in this configuration, we
 380     // are guaranteed to have empty discovered ref lists.
 381     if (rp->discovery_is_atomic()) {
 382       rp->enable_discovery();
 383       rp->setup_policy(clear_soft_refs);
 384     } else {
 385       // collect() below will enable discovery as appropriate
 386     }
 387     gen->collect(full, clear_soft_refs, size, is_tlab);
 388     if (!rp->enqueuing_is_done()) {
 389       ReferenceProcessorPhaseTimes pt(NULL, rp->num_q());
 390       rp->enqueue_discovered_references(NULL, &pt);
 391       pt.print_enqueue_phase();
 392     } else {
 393       rp->set_enqueuing_is_done(false);
 394     }
 395     rp->verify_no_references_recorded();
 396   }
 397 
 398   COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
 399 
 400   gen->stat_record()->accumulated_time.stop();
 401 
 402   update_gc_stats(gen, full);
 403 
 404   if (run_verification && VerifyAfterGC) {
 405     HandleMark hm;  // Discard invalid handles created during verification
 406     Universe::verify("After GC");
 407   }
 408 }
 409 
 410 void GenCollectedHeap::do_collection(bool           full,
 411                                      bool           clear_all_soft_refs,