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comparison src/share/vm/gc_implementation/parallelScavenge/psMarkSweepDecorator.cpp @ 438:122d10c82f3f

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6765804: GC "dead ratios" should be unsigned Reviewed-by: ysr, tonyp
author jcoomes
date Wed, 29 Oct 2008 06:30:02 -0700
parents a4b729f5b611
children 7d7a7c599c17
comparison
equal deleted inserted replaced
414:348be627a148 438:122d10c82f3f
88 * by the MarkSweepAlwaysCompactCount parameter. This is a significant 88 * by the MarkSweepAlwaysCompactCount parameter. This is a significant
89 * performance improvement! 89 * performance improvement!
90 */ 90 */
91 bool skip_dead = ((PSMarkSweep::total_invocations() % MarkSweepAlwaysCompactCount) != 0); 91 bool skip_dead = ((PSMarkSweep::total_invocations() % MarkSweepAlwaysCompactCount) != 0);
92 92
93 ssize_t allowed_deadspace = 0; 93 size_t allowed_deadspace = 0;
94 if (skip_dead) { 94 if (skip_dead) {
95 int ratio = allowed_dead_ratio(); 95 const size_t ratio = allowed_dead_ratio();
96 allowed_deadspace = (space()->capacity_in_bytes() * ratio / 100) / HeapWordSize; 96 allowed_deadspace = space()->capacity_in_words() * ratio / 100;
97 } 97 }
98 98
99 // Fetch the current destination decorator 99 // Fetch the current destination decorator
100 PSMarkSweepDecorator* dest = destination_decorator(); 100 PSMarkSweepDecorator* dest = destination_decorator();
101 ObjectStartArray* start_array = dest->start_array(); 101 ObjectStartArray* start_array = dest->start_array();
269 269
270 // Update compaction top 270 // Update compaction top
271 dest->set_compaction_top(compact_top); 271 dest->set_compaction_top(compact_top);
272 } 272 }
273 273
274 bool PSMarkSweepDecorator::insert_deadspace(ssize_t& allowed_deadspace_words, 274 bool PSMarkSweepDecorator::insert_deadspace(size_t& allowed_deadspace_words,
275 HeapWord* q, size_t deadlength) { 275 HeapWord* q, size_t deadlength) {
276 allowed_deadspace_words -= deadlength; 276 if (allowed_deadspace_words >= deadlength) {
277 if (allowed_deadspace_words >= 0) { 277 allowed_deadspace_words -= deadlength;
278 oop(q)->set_mark(markOopDesc::prototype()->set_marked()); 278 oop(q)->set_mark(markOopDesc::prototype()->set_marked());
279 const size_t aligned_min_int_array_size = 279 const size_t aligned_min_int_array_size =
280 align_object_size(typeArrayOopDesc::header_size(T_INT)); 280 align_object_size(typeArrayOopDesc::header_size(T_INT));
281 if (deadlength >= aligned_min_int_array_size) { 281 if (deadlength >= aligned_min_int_array_size) {
282 oop(q)->set_klass(Universe::intArrayKlassObj()); 282 oop(q)->set_klass(Universe::intArrayKlassObj());