src/hotspot/share/gc/z/zNMethod.cpp

rev 56205 : imported patch 8226705-v1

*** 1,7 ****
  /*
!  * Copyright (c) 2017, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2017, 2019, 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.
*** 264,277 ****
    void unlink(nmethod* nm) {
      // Unlinking of the dependencies must happen before the
      // handshake separating unlink and purge.
      nm->flush_dependencies(false /* delete_immediately */);
  
!     // We don't need to take the lock when unlinking nmethods from
      // the Method, because it is only concurrently unlinked by
      // the entry barrier, which acquires the per nmethod lock.
!     nm->unlink_from_method(false /* acquire_lock */);
  
      if (nm->is_osr_method()) {
        // Invalidate the osr nmethod before the handshake. The nmethod
        // will be made unloaded after the handshake. Then invalidate_osr_method()
        // will be called again, which will be a no-op.
--- 264,278 ----
    void unlink(nmethod* nm) {
      // Unlinking of the dependencies must happen before the
      // handshake separating unlink and purge.
      nm->flush_dependencies(false /* delete_immediately */);
  
!     // unlink_from_method will take the CompiledMethod_lock.
!     // In this case we don't strictly need it when unlinking nmethods from
      // the Method, because it is only concurrently unlinked by
      // the entry barrier, which acquires the per nmethod lock.
!     nm->unlink_from_method();
  
      if (nm->is_osr_method()) {
        // Invalidate the osr nmethod before the handshake. The nmethod
        // will be made unloaded after the handshake. Then invalidate_osr_method()
        // will be called again, which will be a no-op.