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8229278: Improve hs_err location printing to assume less about GC internals

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Reviewed-by: stefank, kbarrett
This commit is contained in:
Erik Österlund 2019-08-28 11:19:09 +02:00
parent 2750569c00
commit 855f16ef50
23 changed files with 243 additions and 127 deletions
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29
src/hotspot/share/oops/oop.cpp
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@ -173,35 +173,6 @@ void* oopDesc::load_oop_raw(oop obj, int offset) {
}
}
bool oopDesc::is_valid(oop obj) {
if (!is_object_aligned(obj)) return false;
if ((size_t)(oopDesc*)obj < os::min_page_size()) return false;
// We need at least the mark and the klass word in the committed region.
if (!os::is_readable_range(obj, (oopDesc*)obj + 1)) return false;
if (!Universe::heap()->is_in(obj)) return false;
Klass* k = (Klass*)load_klass_raw(obj);
return Klass::is_valid(k);
}
oop oopDesc::oop_or_null(address addr) {
if (is_valid(oop(addr))) {
// We were just given an oop directly.
return oop(addr);
}
// Try to find addr using block_start.
HeapWord* p = Universe::heap()->block_start(addr);
if (p != NULL && Universe::heap()->block_is_obj(p)) {
if (!is_valid(oop(p))) return NULL;
return oop(p);
}
// If we can't find it it just may mean that heap wasn't parsable.
return NULL;
}
oop oopDesc::obj_field_acquire(int offset) const { return HeapAccess<MO_ACQUIRE>::oop_load_at(as_oop(), offset); }
void oopDesc::obj_field_put_raw(int offset, oop value) { RawAccess<>::oop_store_at(as_oop(), offset, value); }