src/hotspot/share/code/scopeDesc.hpp

rev 60137 : 8227745: Enable Escape Analysis for Better Performance in the Presence of JVMTI Agents
Reviewed-by: mdoerr, goetz

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2020, 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.
*** 58,83 ****
  // nmethods possible; each scopeDesc describes a method activation
  
  class ScopeDesc : public ResourceObj {
   public:
    // Constructor
!   ScopeDesc(const CompiledMethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool rethrow_exception, bool return_oop);
! 
!   // Calls above, giving default value of "serialized_null" to the
!   // "obj_decode_offset" argument.  (We don't use a default argument to
!   // avoid a .hpp-.hpp dependency.)
!   ScopeDesc(const CompiledMethod* code, int decode_offset, bool reexecute, bool rethrow_exception, bool return_oop);
  
    // Direct access to scope
    ScopeDesc* at_offset(int decode_offset) { return new ScopeDesc(this, decode_offset); }
  
    // JVM state
    Method* method()      const { return _method; }
    int          bci()      const { return _bci;    }
    bool should_reexecute() const { return _reexecute; }
    bool rethrow_exception() const { return _rethrow_exception; }
    bool return_oop()       const { return _return_oop; }
  
    GrowableArray<ScopeValue*>*   locals();
    GrowableArray<ScopeValue*>*   expressions();
    GrowableArray<MonitorValue*>* monitors();
    GrowableArray<ScopeValue*>*   objects();
--- 58,80 ----
  // nmethods possible; each scopeDesc describes a method activation
  
  class ScopeDesc : public ResourceObj {
   public:
    // Constructor
!   ScopeDesc(const CompiledMethod* code, PcDesc* pd, bool ignore_objects = false);
  
    // Direct access to scope
    ScopeDesc* at_offset(int decode_offset) { return new ScopeDesc(this, decode_offset); }
  
    // JVM state
    Method* method()      const { return _method; }
    int          bci()      const { return _bci;    }
    bool should_reexecute() const { return _reexecute; }
    bool rethrow_exception() const { return _rethrow_exception; }
    bool return_oop()       const { return _return_oop; }
+   bool not_global_escape_in_scope() const { return _not_global_escape_in_scope; }
+   bool arg_escape()       const { return _arg_escape; }
  
    GrowableArray<ScopeValue*>*   locals();
    GrowableArray<ScopeValue*>*   expressions();
    GrowableArray<MonitorValue*>* monitors();
    GrowableArray<ScopeValue*>*   objects();
*** 103,112 ****
--- 100,111 ----
    Method*       _method;
    int           _bci;
    bool          _reexecute;
    bool          _rethrow_exception;
    bool          _return_oop;
+   bool          _not_global_escape_in_scope;  // NoEscape or ArgEscape in any of the scopes at compiled pc
+   bool          _arg_escape;                  // Compiled Java call in youngest scope passes ArgEscape
  
    // Decoding offsets
    int _decode_offset;
    int _sender_decode_offset;
    int _locals_decode_offset;