archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-17 17:44:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

7054512: Compress class pointers after perm gen removal

Browse source 
Support of compress class pointers in the compilers.

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2012-10-09 10:11:38 +02:00
parent 7162ad011c
commit 61eb5a0549
93 changed files with 1600 additions and 497 deletions
Download patch file Download diff file Expand all files Collapse all files

16
hotspot/src/share/vm/oops/oop.inline.hpp
View file

@ -185,8 +185,8 @@ inline bool oopDesc::is_null(narrowOop obj) { return obj == 0; }
inline bool check_obj_alignment(oop obj) {
return (intptr_t)obj % MinObjAlignmentInBytes == 0;
}
inline bool check_obj_alignment(Klass* obj) {
return (intptr_t)obj % MinObjAlignmentInBytes == 0;
inline bool check_klass_alignment(Klass* obj) {
return (intptr_t)obj % KlassAlignmentInBytes == 0;
}
inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) {
@ -228,9 +228,9 @@ inline oop oopDesc::decode_heap_oop(oop v) { return v; }
inline narrowOop oopDesc::encode_klass_not_null(Klass* v) {
assert(!is_null(v), "oop value can never be zero");
assert(check_obj_alignment(v), "Address not aligned");
address base = Universe::narrow_oop_base();
int shift = Universe::narrow_oop_shift();
assert(check_klass_alignment(v), "Address not aligned");
address base = Universe::narrow_klass_base();
int shift = Universe::narrow_klass_shift();
uint64_t pd = (uint64_t)(pointer_delta((void*)v, (void*)base, 1));
assert(OopEncodingHeapMax > pd, "change encoding max if new encoding");
uint64_t result = pd >> shift;
@ -245,10 +245,10 @@ inline narrowOop oopDesc::encode_klass(Klass* v) {
inline Klass* oopDesc::decode_klass_not_null(narrowOop v) {
assert(!is_null(v), "narrow oop value can never be zero");
address base = Universe::narrow_oop_base();
int shift = Universe::narrow_oop_shift();
address base = Universe::narrow_klass_base();
int shift = Universe::narrow_klass_shift();
Klass* result = (Klass*)(void*)((uintptr_t)base + ((uintptr_t)v << shift));
assert(check_obj_alignment(result), err_msg("address not aligned: " PTR_FORMAT, (void*) result));
assert(check_klass_alignment(result), err_msg("address not aligned: " PTR_FORMAT, (void*) result));
return result;
}