58 // Create the _archive_region_map which is used to identify archive objects.

    59 inline void G1ArchiveAllocator::enable_archive_object_check() {

    60   assert(!_archive_check_enabled, "archive range check already enabled");

    61   _archive_check_enabled = true;

    62   size_t length = Universe::heap()->max_capacity();

    63   _archive_region_map.initialize((HeapWord*)Universe::heap()->base(),

    64                                  (HeapWord*)Universe::heap()->base() + length,

    65                                  HeapRegion::GrainBytes);

    66 }

    67 

    68 // Set the regions containing the specified address range as archive/non-archive.

    69 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool is_archive) {

    70   assert(_archive_check_enabled, "archive range check not enabled");

    71   _archive_region_map.set_by_address(range, is_archive);

    72 }

    73 

    74 // Check if an object is in an archive region using the _archive_region_map.

    75 inline bool G1ArchiveAllocator::in_archive_range(oop object) {

    76   // This is the out-of-line part of is_archive_object test, done separately

    77   // to avoid additional performance impact when the check is not enabled.

    78   return _archive_region_map.get_by_address((HeapWord*)object);

    79 }

    80 

    81 // Check if archive object checking is enabled, to avoid calling in_archive_range

    82 // unnecessarily.

    83 inline bool G1ArchiveAllocator::archive_check_enabled() {

    84   return _archive_check_enabled;

    85 }

    86 

    87 inline bool G1ArchiveAllocator::is_archive_object(oop object) {

    88   return (archive_check_enabled() && in_archive_range(object));

    89 }

    90