src/share/vm/gc_implementation/g1/heapRegion.cpp

rev 5920 : 8035406: Improve data structure for Code Cache remembered sets
Summary: Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.
Reviewed-by:

*** 708,735 ****
      assert(VerifyDuringGC, "only way to get here");
      return;
    }
  
    HeapRegionRemSet* hrrs = rem_set();
!   int strong_code_roots_length = hrrs->strong_code_roots_list_length();
  
    // if this region is empty then there should be no entries
    // on its strong code root list
    if (is_empty()) {
      if (strong_code_roots_length > 0) {
        gclog_or_tty->print_cr("region ["PTR_FORMAT","PTR_FORMAT"] is empty "
!                              "but has "INT32_FORMAT" code root entries",
                               bottom(), end(), strong_code_roots_length);
        *failures = true;
      }
      return;
    }
  
    if (continuesHumongous()) {
      if (strong_code_roots_length > 0) {
        gclog_or_tty->print_cr("region "HR_FORMAT" is a continuation of a humongous "
!                              "region but has "INT32_FORMAT" code root entries",
                               HR_FORMAT_PARAMS(this), strong_code_roots_length);
        *failures = true;
      }
      return;
    }
--- 708,735 ----
      assert(VerifyDuringGC, "only way to get here");
      return;
    }
  
    HeapRegionRemSet* hrrs = rem_set();
!   size_t strong_code_roots_length = hrrs->strong_code_roots_list_length();
  
    // if this region is empty then there should be no entries
    // on its strong code root list
    if (is_empty()) {
      if (strong_code_roots_length > 0) {
        gclog_or_tty->print_cr("region ["PTR_FORMAT","PTR_FORMAT"] is empty "
!                              "but has "SIZE_FORMAT" code root entries",
                               bottom(), end(), strong_code_roots_length);
        *failures = true;
      }
      return;
    }
  
    if (continuesHumongous()) {
      if (strong_code_roots_length > 0) {
        gclog_or_tty->print_cr("region "HR_FORMAT" is a continuation of a humongous "
!                              "region but has "SIZE_FORMAT" code root entries",
                               HR_FORMAT_PARAMS(this), strong_code_roots_length);
        *failures = true;
      }
      return;
    }