src/share/vm/gc_implementation/parNew/parNewGeneration.cpp

*** 889,904 ****
                                 size_t size,
                                 bool   is_tlab) {
    assert(full || size > 0, "otherwise we don't want to collect");
  
    GenCollectedHeap* gch = GenCollectedHeap::heap();
- 
-   _gc_timer->register_gc_start(os::elapsed_counter());
    ParNewTracer gc_tracer;
-   gc_tracer.report_gc_start(gch->gc_cause(), _gc_timer->gc_start());
  
!   gch->trace_heap_before_gc(&gc_tracer);
  
    assert(gch->kind() == CollectedHeap::GenCollectedHeap,
      "not a CMS generational heap");
    AdaptiveSizePolicy* size_policy = gch->gen_policy()->size_policy();
    FlexibleWorkGang* workers = gch->workers();
--- 889,901 ----
                                 size_t size,
                                 bool   is_tlab) {
    assert(full || size > 0, "otherwise we don't want to collect");
  
    GenCollectedHeap* gch = GenCollectedHeap::heap();
    ParNewTracer gc_tracer;
  
!   _gc_timer->register_gc_start(os::elapsed_counter());
  
    assert(gch->kind() == CollectedHeap::GenCollectedHeap,
      "not a CMS generational heap");
    AdaptiveSizePolicy* size_policy = gch->gen_policy()->size_policy();
    FlexibleWorkGang* workers = gch->workers();
*** 925,934 ****
--- 922,934 ----
      gch->set_incremental_collection_failed();  // slight lie, in that we did not even attempt one
      return;
    }
    assert(to()->is_empty(), "Else not collection_attempt_is_safe");
  
+   gc_tracer.report_gc_start(gch->gc_cause(), _gc_timer->gc_start());
+   gch->trace_heap_before_gc(&gc_tracer);
+ 
    init_assuming_no_promotion_failure();
  
    if (UseAdaptiveSizePolicy) {
      set_survivor_overflow(false);
      size_policy->minor_collection_begin();