ZombieQueue.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef _PROCESS_ZOMBIE_QUEUE_H
#define _PROCESS_ZOMBIE_QUEUE_H
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/types.h"
#include "pedigree/kernel/utilities/RequestQueue.h"
 
#include <config.h>
 
class Process;
 
class ZombieObject {
 public:
  virtual ~ZombieObject() = default;
};
 
class ZombieProcess : public ZombieObject {
 public:
  virtual ~ZombieProcess();
 
#if HOSTED && PEDIGREE_HOSTED_SMOKE_TESTS
  enum class ReapPhase {
    Entered,
    Reapable,
  };
  using ReapHook = void (*)(Process*, ReapPhase);
  static EXPORTED_PUBLIC void setReapHook(ReapHook hook);
#endif
 
 private:
  friend class Process;
  explicit ZombieProcess(Process* pProcess);
 
  Process* m_pProcess;
 
#if HOSTED && PEDIGREE_HOSTED_SMOKE_TESTS
  static ReapHook m_ReapHook;
#endif
};
 
class EXPORTED_PUBLIC ZombieQueue : public RequestQueue {
 public:
  ZombieQueue();
  virtual ~ZombieQueue();
 
  static ZombieQueue& instance();
 
  void addObject(ZombieObject* pObject);
 
 private:
  virtual uint64_t executeRequest(uint64_t p1, uint64_t p2, uint64_t p3, uint64_t p4, uint64_t p5,
                                  uint64_t p6, uint64_t p7, uint64_t p8);
 
  virtual void cancelRequest(const Request& request);
 
  static ZombieQueue m_Instance;
};
 
#endif