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5103339: Strengthen NoSafepointVerifier

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Add NSV check at possible safepoint transition or places that could take out locks.  Consolidate with clearing unhandled oops.

Reviewed-by: dholmes, rehn
This commit is contained in:
Coleen Phillimore 2019-08-14 10:07:00 -04:00
parent af89550878
commit d1ca6221a4
16 changed files with 50 additions and 51 deletions
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5
src/hotspot/share/oops/objArrayKlass.cpp
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@ -328,7 +328,7 @@ Klass* ObjArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) {
// lock-free read needs acquire semantics
if (higher_dimension_acquire() == NULL) {
if (or_null) return NULL;
if (or_null) return NULL;
ResourceMark rm;
JavaThread *jt = (JavaThread *)THREAD;
@ -349,14 +349,13 @@ Klass* ObjArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) {
assert(ak->is_objArray_klass(), "incorrect initialization of ObjArrayKlass");
}
}
} else {
CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
}
ObjArrayKlass *ak = ObjArrayKlass::cast(higher_dimension());
if (or_null) {
return ak->array_klass_or_null(n);
}
THREAD->check_possible_safepoint();
return ak->array_klass(n, THREAD);
}