Mercurial > hg > truffle

comparison src/share/vm/oops/oop.inline.hpp @ 135:b7268662a986

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6689523: max heap calculation for compressed oops is off by MaxPermSize Summary: Need to subtract MaxPermSize from the total heap size when determining whether compressed oops is turned on. Reviewed-by: jmasa, jcoomes, kvn
author coleenp
date Tue, 29 Apr 2008 19:31:29 -0400
parents 435e64505015
children feeb96a45707 37f87013dfd8
comparison
equal deleted inserted replaced
134:8a79f7ec8f5d 135:b7268662a986
132 // in inner GC loops so these are separated. 132 // in inner GC loops so these are separated.
133 133
134 inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) { 134 inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) {
135 assert(!is_null(v), "oop value can never be zero"); 135 assert(!is_null(v), "oop value can never be zero");
136 address heap_base = Universe::heap_base(); 136 address heap_base = Universe::heap_base();
137 uint64_t result = (uint64_t)(pointer_delta((void*)v, (void*)heap_base, 1) >> LogMinObjAlignmentInBytes); 137 uint64_t pd = (uint64_t)(pointer_delta((void*)v, (void*)heap_base, 1));
138 assert((result & 0xffffffff00000000ULL) == 0, "narrow oop overflow"); 138 assert(OopEncodingHeapMax > pd, "change encoding max if new encoding");
139 uint64_t result = pd >> LogMinObjAlignmentInBytes;
140 assert((result & CONST64(0xffffffff00000000)) == 0, "narrow oop overflow");
139 return (narrowOop)result; 141 return (narrowOop)result;
140 } 142 }
141 143
142 inline narrowOop oopDesc::encode_heap_oop(oop v) { 144 inline narrowOop oopDesc::encode_heap_oop(oop v) {
143 return (is_null(v)) ? (narrowOop)0 : encode_heap_oop_not_null(v); 145 return (is_null(v)) ? (narrowOop)0 : encode_heap_oop_not_null(v);