src/hotspot/share/services/memReporter.cpp

*** 289,299 ****
    if (amount_in_current_scale(reserved_rgn->size()) == 0) return;
  
    outputStream* out = output();
    const char* scale = current_scale();
    const NativeCallStack*  stack = reserved_rgn->call_stack();
!   bool all_committed = reserved_rgn->all_committed();
    const char* region_type = (all_committed ? "reserved and committed" : "reserved");
    out->print_cr(" ");
    print_virtual_memory_region(region_type, reserved_rgn->base(), reserved_rgn->size());
    out->print(" for %s", NMTUtil::flag_to_name(reserved_rgn->flag()));
    if (stack->is_empty()) {
--- 289,299 ----
    if (amount_in_current_scale(reserved_rgn->size()) == 0) return;
  
    outputStream* out = output();
    const char* scale = current_scale();
    const NativeCallStack*  stack = reserved_rgn->call_stack();
!   bool all_committed = reserved_rgn->size() == reserved_rgn->committed_size();
    const char* region_type = (all_committed ? "reserved and committed" : "reserved");
    out->print_cr(" ");
    print_virtual_memory_region(region_type, reserved_rgn->base(), reserved_rgn->size());
    out->print(" for %s", NMTUtil::flag_to_name(reserved_rgn->flag()));
    if (stack->is_empty()) {
*** 301,311 ****
    } else {
      out->print_cr(" from");
      stack->print_on(out, 4);
    }
  
!   if (all_committed) return;
  
    CommittedRegionIterator itr = reserved_rgn->iterate_committed_regions();
    const CommittedMemoryRegion* committed_rgn;
    while ((committed_rgn = itr.next()) != NULL) {
      // Don't report if size is too small
--- 301,321 ----
    } else {
      out->print_cr(" from");
      stack->print_on(out, 4);
    }
  
!   if (all_committed) {
!     CommittedRegionIterator itr = reserved_rgn->iterate_committed_regions();
!     const CommittedMemoryRegion* committed_rgn = itr.next();
!     if (committed_rgn->size() == reserved_rgn->size() && committed_rgn->call_stack()->equals(*stack)) {
!       // One region spanning the entire reserved region, with the same stack trace.
!       // Don't print this regions because the "reserved and committed" line above
!       // already indicates that the region is comitted.
!       assert(itr.next() == NULL, "Unexpectedly more than one regions");
!       return;
!     }
!   }
  
    CommittedRegionIterator itr = reserved_rgn->iterate_committed_regions();
    const CommittedMemoryRegion* committed_rgn;
    while ((committed_rgn = itr.next()) != NULL) {
      // Don't report if size is too small
*** 743,748 ****
    print_virtual_memory_diff(current_reserved, current_committed,
      early_reserved, early_committed);
  
    out->print_cr(")\n");
   }
- 
--- 753,757 ----