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Viewing changes to plugin/user_locks/locks.h

  • Committer: Brian Aker
  • Date: 2010-11-08 17:40:41 UTC
  • mto: (1921.1.1 trunk)
  • mto: This revision was merged to the branch mainline in revision 1916.
  • Revision ID: brian@tangent.org-20101108174041-owap774v8l5vvnl4
Push some functions behind classes.

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plugin/user_locks/locks.h
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/condition_variable.hpp>
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#include <boost/unordered_map.hpp>
 
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#include <boost/logic/tribool.hpp>
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#include <boost/unordered/unordered_set.hpp>
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#include "plugin/user_locks/lock.h"
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#include <string>
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#include "drizzled/session.h"
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namespace user_locks {
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namespace locks {
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  enum return_t {
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    SUCCESS,
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    NOT_FOUND,
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    NOT_OWNED_BY
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  };
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} /* locks user_locks */
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const size_t LARGEST_LOCK_NAME= 64;
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class Locks
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{
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public:
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  typedef boost::unordered_map<user_locks::Key, user_locks::Lock::shared_ptr> LockMap;
 
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  struct lock_st {
 
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    drizzled::session_id_t id;
 
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    lock_st(drizzled::session_id_t id_arg) :
 
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      id(id_arg)
 
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    {
 
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    }
 
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  };
 
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  typedef boost::shared_ptr<lock_st> lock_st_ptr;
 
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  typedef boost::unordered_map<user_locks::Key, lock_st_ptr> LockMap;
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  static Locks &getInstance(void)
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  {
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    return instance;
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  }
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  void waitCreate(int64_t wait_for= 2); // Default is to wait 2 seconds before returning
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  bool lock(drizzled::session_id_t id_arg, const user_locks::Key &arg);
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  bool lock(drizzled::session_id_t id_arg, const user_locks::Key &arg, int64_t wait_for= 0);
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  bool lock(drizzled::session_id_t id_arg, const user_locks::Keys &arg);
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  locks::return_t release(const user_locks::Key &arg, drizzled::session_id_t &id_arg, bool and_wait= false);
 
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  boost::tribool release(const user_locks::Key &arg, drizzled::session_id_t &id_arg);
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  bool isFree(const user_locks::Key &arg);
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  bool isUsed(const user_locks::Key &arg, drizzled::session_id_t &id_arg);
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  void Copy(LockMap &lock_map);
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private:
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  boost::mutex mutex;
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  boost::condition_variable create_cond; // Signal next 
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  boost::condition_variable release_cond;
 
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  boost::condition_variable cond;
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  LockMap lock_map; 
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};
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