#include "CLucene/StdHeader.h"
#ifndef _lucene_store_Lock_
#define _lucene_store_Lock_

namespace lucene{ namespace store{
	class LuceneLock{
	public:
		// Attempt to obtain exclusive access.
		//
		// @return true iff exclusive access is obtained
		virtual bool obtain() = 0;

		// Release exclusive access. 
		virtual void release() = 0;

		virtual ~LuceneLock()
		{
		}
	};

		
	// Utility class for executing code with exclusive access. 
	class LuceneLockWith {
    private:
		const static int_t sleepInterval = 1000;
		const static int_t maxSleeps = 10;
		
    protected:
		LuceneLock* lock;
		// Code to execute with exclusive access. 
		virtual void* doBody() = 0;

	// Constructs an executor that will grab the named lock.
	public:
		~LuceneLockWith();

		//Calls {@link #doBody} while <i>lock</i> is obtained.  Blocks if lock
		//cannot be obtained immediately.  Retries to obtain lock once per second
		//until it is obtained, or until it has tried ten times.
		void* run();
	};
}}
#endif