InfoBlock.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 _INFO_BLOCK_H
#define _INFO_BLOCK_H
 
#ifdef __cplusplus
 
#include "pedigree/kernel/processor/types.h"
 
#else
 
#include <stddef.h>
#include <stdint.h>
 
#endif
 
#define INFO_BLOCK_VDSO_GETCPU_RDTSCP (1u << 0)
 
struct InfoBlock {
  uint64_t now;
 
  uint64_t now_s;
 
  size_t pid;
 
  char sysname[64];
  char release[64];
  char version[64];
  char machine[64];
 
  uint64_t monotonic;
 
  uint32_t vdso_features;
};
 
#ifdef __cplusplus
 
#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/machine/TimerHandler.h"
 
class Timer;
 
class InfoBlockManager : public TimerHandler {
 public:
  InfoBlockManager();
  virtual ~InfoBlockManager();
 
  static InfoBlockManager& instance();
 
  bool initialise();
 
  bool shutdown();
 
  virtual void timer(uint64_t delta);
 
  void refreshTime();
 
  void setPid(size_t value);
 
 private:
  static InfoBlockManager m_Instance;
 
  bool m_bInitialised;
  Spinlock m_UpdateLock;
  Timer* m_pTimer;
 
  struct InfoBlock* m_pInfoBlock;
};
 
#endif
 
#endif