src/hotspot/share/runtime/biasedLocking.cpp

rev 49289 : 8199735: Mark word updates need to use Access API

*** 1,7 ****
  /*
!  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. 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) 2005, 2018, Oracle and/or its affiliates. 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.
*** 614,624 ****
        // CAS. If we fail this race, the object's bias has been revoked
        // by another thread so we simply return and let the caller deal
        // with it.
        markOop biased_value       = mark;
        markOop res_mark = obj->cas_set_mark(prototype_header, mark);
!       assert(!(*(obj->mark_addr()))->has_bias_pattern(), "even if we raced, should still be revoked");
        return BIAS_REVOKED;
      } else if (prototype_header->bias_epoch() != mark->bias_epoch()) {
        // The epoch of this biasing has expired indicating that the
        // object is effectively unbiased. Depending on whether we need
        // to rebias or revoke the bias of this object we can do it
--- 614,624 ----
        // CAS. If we fail this race, the object's bias has been revoked
        // by another thread so we simply return and let the caller deal
        // with it.
        markOop biased_value       = mark;
        markOop res_mark = obj->cas_set_mark(prototype_header, mark);
!       assert(!obj->mark()->has_bias_pattern(), "even if we raced, should still be revoked");
        return BIAS_REVOKED;
      } else if (prototype_header->bias_epoch() != mark->bias_epoch()) {
        // The epoch of this biasing has expired indicating that the
        // object is effectively unbiased. Depending on whether we need
        // to rebias or revoke the bias of this object we can do it