194                                   bool clear_all_softrefs) {
 195   // Recursively traverse all live objects and mark them
 196   GCTraceTime tm("phase 1", PrintGC && Verbose, true, _gc_timer, _gc_tracer->gc_id());
 197   trace(" 1");
 198 
 199   GenCollectedHeap* gch = GenCollectedHeap::heap();
 200 
 201   // Because follow_root_closure is created statically, cannot
 202   // use OopsInGenClosure constructor which takes a generation,
 203   // as the Universe has not been created when the static constructors
 204   // are run.
 205   follow_root_closure.set_orig_generation(gch->get_gen(level));
 206 
 207   // Need new claim bits before marking starts.
 208   ClassLoaderDataGraph::clear_claimed_marks();
 209 
 210   gch->gen_process_roots(level,
 211                          false, // Younger gens are not roots.
 212                          true,  // activate StrongRootsScope
 213                          GenCollectedHeap::SO_None,
 214                          GenCollectedHeap::StrongRootsOnly,
 215                          &follow_root_closure,
 216                          &follow_root_closure,
 217                          &follow_cld_closure);
 218 
 219   // Process reference objects found during marking
 220   {
 221     ref_processor()->setup_policy(clear_all_softrefs);
 222     const ReferenceProcessorStats& stats =
 223       ref_processor()->process_discovered_references(
 224         &is_alive, &keep_alive, &follow_stack_closure, NULL, _gc_timer, _gc_tracer->gc_id());
 225     gc_tracer()->report_gc_reference_stats(stats);
 226   }
 227 
 228   // This is the point where the entire marking should have completed.
 229   assert(_marking_stack.is_empty(), "Marking should have completed");
 230 
 231   // Unload classes and purge the SystemDictionary.
 232   bool purged_class = SystemDictionary::do_unloading(&is_alive);
 233 
 234   // Unload nmethods.

 194                                   bool clear_all_softrefs) {
 195   // Recursively traverse all live objects and mark them
 196   GCTraceTime tm("phase 1", PrintGC && Verbose, true, _gc_timer, _gc_tracer->gc_id());
 197   trace(" 1");
 198 
 199   GenCollectedHeap* gch = GenCollectedHeap::heap();
 200 
 201   // Because follow_root_closure is created statically, cannot
 202   // use OopsInGenClosure constructor which takes a generation,
 203   // as the Universe has not been created when the static constructors
 204   // are run.
 205   follow_root_closure.set_orig_generation(gch->get_gen(level));
 206 
 207   // Need new claim bits before marking starts.
 208   ClassLoaderDataGraph::clear_claimed_marks();
 209 
 210   gch->gen_process_roots(level,
 211                          false, // Younger gens are not roots.
 212                          true,  // activate StrongRootsScope
 213                          GenCollectedHeap::SO_None,
 214                          ClassUnloading,
 215                          &follow_root_closure,
 216                          &follow_root_closure,
 217                          &follow_cld_closure);
 218 
 219   // Process reference objects found during marking
 220   {
 221     ref_processor()->setup_policy(clear_all_softrefs);
 222     const ReferenceProcessorStats& stats =
 223       ref_processor()->process_discovered_references(
 224         &is_alive, &keep_alive, &follow_stack_closure, NULL, _gc_timer, _gc_tracer->gc_id());
 225     gc_tracer()->report_gc_reference_stats(stats);
 226   }
 227 
 228   // This is the point where the entire marking should have completed.
 229   assert(_marking_stack.is_empty(), "Marking should have completed");
 230 
 231   // Unload classes and purge the SystemDictionary.
 232   bool purged_class = SystemDictionary::do_unloading(&is_alive);
 233 
 234   // Unload nmethods.