2052     const char* gc_cause_str = "Full GC";
2053     if (is_system_gc && PrintGCDetails) {
2054       gc_cause_str = "Full GC (System)";
2055     }
2056     gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);
2057     TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);
2058     TraceTime t1(gc_cause_str, PrintGC, !PrintGCDetails, gclog_or_tty);
2059     TraceCollectorStats tcs(counters());
2060     TraceMemoryManagerStats tms(true /* Full GC */,gc_cause);
2061 
2062     if (TraceGen1Time) accumulated_time()->start();
2063 
2064     // Let the size policy know we're starting
2065     size_policy->major_collection_begin();
2066 
2067     // When collecting the permanent generation methodOops may be moving,
2068     // so we either have to flush all bcp data or convert it into bci.
2069     CodeCache::gc_prologue();
2070     Threads::gc_prologue();
2071 
2072     NOT_PRODUCT(ref_processor()->verify_no_references_recorded());
2073     COMPILER2_PRESENT(DerivedPointerTable::clear());
2074 
2075     ref_processor()->enable_discovery();
2076     ref_processor()->setup_policy(maximum_heap_compaction);
2077 
2078     bool marked_for_unloading = false;
2079 
2080     marking_start.update();
2081     marking_phase(vmthread_cm, maximum_heap_compaction);
2082 
2083 #ifndef PRODUCT
2084     if (TraceParallelOldGCMarkingPhase) {
2085       gclog_or_tty->print_cr("marking_phase: cas_tries %d  cas_retries %d "
2086         "cas_by_another %d",
2087         mark_bitmap()->cas_tries(), mark_bitmap()->cas_retries(),
2088         mark_bitmap()->cas_by_another());
2089     }
2090 #endif  // #ifndef PRODUCT
2091 
2092     bool max_on_system_gc = UseMaximumCompactionOnSystemGC && is_system_gc;
2093     summary_phase(vmthread_cm, maximum_heap_compaction || max_on_system_gc);
2094 
2095     COMPILER2_PRESENT(assert(DerivedPointerTable::is_active(), "Sanity"));

2052     const char* gc_cause_str = "Full GC";
2053     if (is_system_gc && PrintGCDetails) {
2054       gc_cause_str = "Full GC (System)";
2055     }
2056     gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);
2057     TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);
2058     TraceTime t1(gc_cause_str, PrintGC, !PrintGCDetails, gclog_or_tty);
2059     TraceCollectorStats tcs(counters());
2060     TraceMemoryManagerStats tms(true /* Full GC */,gc_cause);
2061 
2062     if (TraceGen1Time) accumulated_time()->start();
2063 
2064     // Let the size policy know we're starting
2065     size_policy->major_collection_begin();
2066 
2067     // When collecting the permanent generation methodOops may be moving,
2068     // so we either have to flush all bcp data or convert it into bci.
2069     CodeCache::gc_prologue();
2070     Threads::gc_prologue();
2071 

2072     COMPILER2_PRESENT(DerivedPointerTable::clear());
2073 
2074     ref_processor()->enable_discovery(true /*verify_disabled*/, true /*verify_no_refs*/);
2075     ref_processor()->setup_policy(maximum_heap_compaction);
2076 
2077     bool marked_for_unloading = false;
2078 
2079     marking_start.update();
2080     marking_phase(vmthread_cm, maximum_heap_compaction);
2081 
2082 #ifndef PRODUCT
2083     if (TraceParallelOldGCMarkingPhase) {
2084       gclog_or_tty->print_cr("marking_phase: cas_tries %d  cas_retries %d "
2085         "cas_by_another %d",
2086         mark_bitmap()->cas_tries(), mark_bitmap()->cas_retries(),
2087         mark_bitmap()->cas_by_another());
2088     }
2089 #endif  // #ifndef PRODUCT
2090 
2091     bool max_on_system_gc = UseMaximumCompactionOnSystemGC && is_system_gc;
2092     summary_phase(vmthread_cm, maximum_heap_compaction || max_on_system_gc);
2093 
2094     COMPILER2_PRESENT(assert(DerivedPointerTable::is_active(), "Sanity"));