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comparison src/share/vm/oops/markOop.inline.hpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
parents a61af66fc99e
children c18cbe5936b8
comparison
equal deleted inserted replaced
189:0b27f3512f9e 342:37f87013dfd8
37 return true; 37 return true;
38 } 38 }
39 return (!is_unlocked() || !has_no_hash()); 39 return (!is_unlocked() || !has_no_hash());
40 } 40 }
41 41
42 inline bool markOopDesc::must_be_preserved(oop obj_containing_mark) const {
43 if (!UseBiasedLocking)
44 return (!is_unlocked() || !has_no_hash());
45 return must_be_preserved_with_bias(obj_containing_mark);
46 }
47
42 // Should this header (including its age bits) be preserved in the 48 // Should this header (including its age bits) be preserved in the
43 // case of a promotion failure during scavenge? 49 // case of a promotion failure during scavenge?
44 inline bool markOopDesc::must_be_preserved_with_bias_for_promotion_failure(oop obj_containing_mark) const { 50 inline bool markOopDesc::must_be_preserved_with_bias_for_promotion_failure(oop obj_containing_mark) const {
45 assert(UseBiasedLocking, "unexpected"); 51 assert(UseBiasedLocking, "unexpected");
46 // We don't explicitly save off the mark words of biased and 52 // We don't explicitly save off the mark words of biased and
57 return true; 63 return true;
58 } 64 }
59 return (this != prototype()); 65 return (this != prototype());
60 } 66 }
61 67
68 inline bool markOopDesc::must_be_preserved_for_promotion_failure(oop obj_containing_mark) const {
69 if (!UseBiasedLocking)
70 return (this != prototype());
71 return must_be_preserved_with_bias_for_promotion_failure(obj_containing_mark);
72 }
73
74
62 // Should this header (including its age bits) be preserved in the 75 // Should this header (including its age bits) be preserved in the
63 // case of a scavenge in which CMS is the old generation? 76 // case of a scavenge in which CMS is the old generation?
64 inline bool markOopDesc::must_be_preserved_with_bias_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const { 77 inline bool markOopDesc::must_be_preserved_with_bias_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const {
65 assert(UseBiasedLocking, "unexpected"); 78 assert(UseBiasedLocking, "unexpected");
66 // CMS scavenges preserve mark words in similar fashion to promotion failures; see above 79 // CMS scavenges preserve mark words in similar fashion to promotion failures; see above
68 klass_of_obj_containing_mark->klass_part()->prototype_header()->has_bias_pattern()) { 81 klass_of_obj_containing_mark->klass_part()->prototype_header()->has_bias_pattern()) {
69 return true; 82 return true;
70 } 83 }
71 return (this != prototype()); 84 return (this != prototype());
72 } 85 }
86 inline bool markOopDesc::must_be_preserved_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const {
87 if (!UseBiasedLocking)
88 return (this != prototype());
89 return must_be_preserved_with_bias_for_cms_scavenge(klass_of_obj_containing_mark);
90 }
73 91
74 inline markOop markOopDesc::prototype_for_object(oop obj) { 92 inline markOop markOopDesc::prototype_for_object(oop obj) {
75 #ifdef ASSERT 93 #ifdef ASSERT
76 markOop prototype_header = obj->klass()->klass_part()->prototype_header(); 94 markOop prototype_header = obj->klass()->klass_part()->prototype_header();
77 assert(prototype_header == prototype() || prototype_header->has_bias_pattern(), "corrupt prototype header"); 95 assert(prototype_header == prototype() || prototype_header->has_bias_pattern(), "corrupt prototype header");