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src/hotspot/share/gc/shenandoah/shenandoahThreadLocalData.hpp

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rev 59151 : 8244420: Shenandoah: Ensure _disarmed_value offset < 128

*** 1,7 **** /* ! * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. --- 1,7 ---- /* ! * Copyright (c) 2018, 2020, Red Hat, Inc. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.
*** 54,63 **** --- 54,67 ---- _gclab(NULL), _gclab_size(0), _worker_id(INVALID_WORKER_ID), _force_satb_flush(false), _disarmed_value(ShenandoahCodeRoots::disarmed_value()) { + + // At least on x86_64, nmethod entry barrier encodes _disarmed_value offset + // in instruction as disp8 immed + assert(in_bytes(disarmed_value_offset()) < 128, "Offset range check"); } ~ShenandoahThreadLocalData() { if (_gclab != NULL) { delete _gclab;
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