--- old/src/share/vm/memory/universe.cpp 2015-10-08 07:24:10.000000000 -1000 +++ new/src/share/vm/memory/universe.cpp 2015-10-08 07:24:09.000000000 -1000 @@ -143,6 +143,10 @@ // Heap int Universe::_verify_count = 0; +// Oop verification (see MacroAssembler::verify_oop) +uintptr_t Universe::_verify_oop_mask = 0; +uintptr_t Universe::_verify_oop_bits = (uintptr_t) -1; + int Universe::_base_vtable_size = 0; bool Universe::_bootstrapping = false; bool Universe::_fully_initialized = false; @@ -1171,17 +1175,9 @@ _verify_in_progress = false; } -// Oop verification (see MacroAssembler::verify_oop) - -static uintptr_t _verify_oop_data[2] = {0, (uintptr_t)-1}; -static uintptr_t _verify_klass_data[2] = {0, (uintptr_t)-1}; - #ifndef PRODUCT - -static void calculate_verify_data(uintptr_t verify_data[2], - HeapWord* low_boundary, - HeapWord* high_boundary) { +void Universe::calculate_verify_data(HeapWord* low_boundary, HeapWord* high_boundary) { assert(low_boundary < high_boundary, "bad interval"); // decide which low-order bits we require to be clear: @@ -1206,28 +1202,25 @@ // require address alignment, too: mask |= (alignSize - 1); - if (!(verify_data[0] == 0 && verify_data[1] == (uintptr_t)-1)) { - assert(verify_data[0] == mask && verify_data[1] == bits, "mask stability"); + if (!(_verify_oop_mask == 0 && _verify_oop_bits == (uintptr_t)-1)) { + assert(_verify_oop_mask == mask && _verify_oop_bits == bits, "mask stability"); } - verify_data[0] = mask; - verify_data[1] = bits; + _verify_oop_mask = mask; + _verify_oop_bits = bits; } // Oop verification (see MacroAssembler::verify_oop) uintptr_t Universe::verify_oop_mask() { MemRegion m = heap()->reserved_region(); - calculate_verify_data(_verify_oop_data, - m.start(), - m.end()); - return _verify_oop_data[0]; + calculate_verify_data(m.start(), m.end()); + return _verify_oop_mask; } - - uintptr_t Universe::verify_oop_bits() { - verify_oop_mask(); - return _verify_oop_data[1]; + MemRegion m = heap()->reserved_region(); + calculate_verify_data(m.start(), m.end()); + return _verify_oop_bits; } uintptr_t Universe::verify_mark_mask() {