Mercurial > jdk8-mips64-public > hotspot / changeset

     1.1 --- a/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp	Wed May 14 14:32:23 2014 +0200
     1.2 +++ b/src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp	Tue May 20 10:24:30 2014 +0200
     1.3 @@ -95,7 +95,15 @@
     1.4    jbyte *const first = byte_for(mr.start());
     1.5    jbyte *const last = byte_after(mr.last());
     1.6  
     1.7 -  memset(first, g1_young_gen, last - first);
     1.8 +  // Below we may use an explicit loop instead of memset() because on
     1.9 +  // certain platforms memset() can give concurrent readers phantom zeros.
    1.10 +  if (UseMemSetInBOT) {
    1.11 +    memset(first, g1_young_gen, last - first);
    1.12 +  } else {
    1.13 +    for (jbyte* i = first; i < last; i++) {
    1.14 +      *i = g1_young_gen;
    1.15 +    }
    1.16 +  }
    1.17  }
    1.18  
    1.19  #ifndef PRODUCT