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comparison src/share/vm/memory/generation.cpp @ 1888:a7214d79fcf1

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6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data Summary: Deprecated HandlePromotionFailure, removing the ability to turn off that feature, did away with one epoch look-ahead when deciding if a scavenge is likely to fail, relying on current data. Reviewed-by: jmasa, johnc, poonam
author ysr
date Sat, 23 Oct 2010 23:03:49 -0700
parents c18cbe5936b8
children f95d63e2154a
comparison
equal deleted inserted replaced
1887:cd3ef3fd20dd 1888:a7214d79fcf1
163 } 163 }
164 } 164 }
165 return max; 165 return max;
166 } 166 }
167 167
168 bool Generation::promotion_attempt_is_safe(size_t promotion_in_bytes, 168 bool Generation::promotion_attempt_is_safe(size_t max_promotion_in_bytes) const {
169 bool not_used) const { 169 size_t available = max_contiguous_available();
170 bool res = (available >= max_promotion_in_bytes);
170 if (PrintGC && Verbose) { 171 if (PrintGC && Verbose) {
171 gclog_or_tty->print_cr("Generation::promotion_attempt_is_safe" 172 gclog_or_tty->print_cr(
172 " contiguous_available: " SIZE_FORMAT 173 "Generation: promo attempt is%s safe: available("SIZE_FORMAT") %s max_promo("SIZE_FORMAT")",
173 " promotion_in_bytes: " SIZE_FORMAT, 174 res? "":" not", available, res? ">=":"<",
174 max_contiguous_available(), promotion_in_bytes); 175 max_promotion_in_bytes);
175 } 176 }
176 return max_contiguous_available() >= promotion_in_bytes; 177 return res;
177 } 178 }
178 179
179 // Ignores "ref" and calls allocate(). 180 // Ignores "ref" and calls allocate().
180 oop Generation::promote(oop obj, size_t obj_size) { 181 oop Generation::promote(oop obj, size_t obj_size) {
181 assert(obj_size == (size_t)obj->size(), "bad obj_size passed in"); 182 assert(obj_size == (size_t)obj->size(), "bad obj_size passed in");