901 || GC_locker::is_active_and_needs_gc()
902 || gch->incremental_collection_failed();
903 }
904
905
906 //
907 // MarkSweepPolicy methods
908 //
909
910 void MarkSweepPolicy::initialize_alignments() {
911 _space_alignment = _gen_alignment = (size_t)Generation::GenGrain;
912 _heap_alignment = compute_heap_alignment();
913 }
914
915 void MarkSweepPolicy::initialize_generations() {
916 _young_gen_spec = new GenerationSpec(Generation::DefNew, _initial_young_size, _max_young_size, _gen_alignment);
917 _old_gen_spec = new GenerationSpec(Generation::MarkSweepCompact, _initial_old_size, _max_old_size, _gen_alignment);
918 }
919
920 void MarkSweepPolicy::initialize_gc_policy_counters() {
921 // Initialize the policy counters - 2 collectors, 3 generations.
922 _gc_policy_counters = new GCPolicyCounters("Copy:MSC", 2, 3);
923 }
924
925 /////////////// Unit tests ///////////////
926
927 #ifndef PRODUCT
928 // Testing that the NewSize flag is handled correct is hard because it
929 // depends on so many other configurable variables. This test only tries to
930 // verify that there are some basic rules for NewSize honored by the policies.
931 class TestGenCollectorPolicy {
932 public:
933 static void test_new_size() {
934 size_t flag_value;
935
936 save_flags();
937
938 // If NewSize is set on the command line, it should be used
939 // for both min and initial young size if less than min heap.
940 flag_value = 20 * M;
941 set_basic_flag_values();
942 FLAG_SET_CMDLINE(size_t, NewSize, flag_value);
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901 || GC_locker::is_active_and_needs_gc()
902 || gch->incremental_collection_failed();
903 }
904
905
906 //
907 // MarkSweepPolicy methods
908 //
909
910 void MarkSweepPolicy::initialize_alignments() {
911 _space_alignment = _gen_alignment = (size_t)Generation::GenGrain;
912 _heap_alignment = compute_heap_alignment();
913 }
914
915 void MarkSweepPolicy::initialize_generations() {
916 _young_gen_spec = new GenerationSpec(Generation::DefNew, _initial_young_size, _max_young_size, _gen_alignment);
917 _old_gen_spec = new GenerationSpec(Generation::MarkSweepCompact, _initial_old_size, _max_old_size, _gen_alignment);
918 }
919
920 void MarkSweepPolicy::initialize_gc_policy_counters() {
921 // Initialize the policy counters - 2 collectors, 2 generations.
922 _gc_policy_counters = new GCPolicyCounters("Copy:MSC", 2, 2);
923 }
924
925 /////////////// Unit tests ///////////////
926
927 #ifndef PRODUCT
928 // Testing that the NewSize flag is handled correct is hard because it
929 // depends on so many other configurable variables. This test only tries to
930 // verify that there are some basic rules for NewSize honored by the policies.
931 class TestGenCollectorPolicy {
932 public:
933 static void test_new_size() {
934 size_t flag_value;
935
936 save_flags();
937
938 // If NewSize is set on the command line, it should be used
939 // for both min and initial young size if less than min heap.
940 flag_value = 20 * M;
941 set_basic_flag_values();
942 FLAG_SET_CMDLINE(size_t, NewSize, flag_value);
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