processOop.hpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.10 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
All rights reserved.

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// A processOop is the Delta level process.
// It is a proxy for a vm c-heap allocate Process (see process.hpp).

class processOopDesc: public memOopDesc {
 protected:
  DeltaProcess*  _process;
  processOopDesc* addr() { return (processOopDesc*)memOopDesc::addr();}
    
 public:
  friend processOop as_processOop(void* p) { return processOop(as_memOop(p)); }

  DeltaProcess* process() { return addr()->_process; }
  void set_process(DeltaProcess* p)  { 
    assert(oop(p)->is_smi(), "not a smi");
    addr()->_process = p; }

  // Returns whether the process is alive.
  bool is_live() { return process() != NULL; }

  // Yields to the scheduling process.
  void yield();

  // Returns the status of the process as symbol
  symbolOop status_symbol();

  // Timing 
  double user_time();
  double system_time();

  // sizing
  static int header_size() { return sizeof(processOopDesc)/oopSize; }

  // bootstrapping
  void bootstrap_object(bootstrap* st);

  friend class processKlass;
};

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