tpcbexample.cpp

File system using stacked.

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997-2002
 *	Sleepycat Software.  All rights reserved.
 *
 * $Id: TpcbExample.cpp,v 1.1.1.1 2004/08/19 23:53:56 gopalan Exp $
 */

#include <sys/types.h>

#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include <iostream>
#include <iomanip>
#include <db_cxx.h>

using std::cout;
using std::cerr;

typedef enum { ACCOUNT, BRANCH, TELLER } FTYPE;

static int	  invarg(int, char *);
u_int32_t random_id(FTYPE, u_int32_t, u_int32_t, u_int32_t);
u_int32_t random_int(u_int32_t, u_int32_t);
static int	  usage(void);

int verbose;
const char *progname = "TpcbExample";                       // Program name.

class TpcbExample : public DbEnv
{
public:
	void populate(int, int, int, int);
	void run(int, int, int, int);
	int txn(Db *, Db *, Db *, Db *,
		int, int, int);
	void populateHistory(Db *, int, u_int32_t, u_int32_t, u_int32_t);
	void populateTable(Db *, u_int32_t, u_int32_t, int, const char *);

	// Note: the constructor creates a DbEnv(), which is
	// not fully initialized until the DbEnv::open() method
	// is called.
	//
	TpcbExample(const char *home, int cachesize,
		    int initializing, int flags);

private:
	static const char FileName[];

	// no need for copy and assignment
	TpcbExample(const TpcbExample &);
	void operator = (const TpcbExample &);
};

//
// This program implements a basic TPC/B driver program.  To create the
// TPC/B database, run with the -i (init) flag.  The number of records
// with which to populate the account, history, branch, and teller tables
// is specified by the a, s, b, and t flags respectively.  To run a TPC/B
// test, use the n flag to indicate a number of transactions to run (note
// that you can run many of these processes in parallel to simulate a
// multiuser test run).
//
#define	TELLERS_PER_BRANCH      100
#define	ACCOUNTS_PER_TELLER     1000
#define	HISTORY_PER_BRANCH	2592000

/*
 * The default configuration that adheres to TPCB scaling rules requires
 * nearly 3 GB of space.  To avoid requiring that much space for testing,
 * we set the parameters much lower.  If you want to run a valid 10 TPS
 * configuration, define VALID_SCALING.
 */
#ifdef	VALID_SCALING
#define	ACCOUNTS	 1000000
#define	BRANCHES	      10
#define	TELLERS		     100
#define	HISTORY		25920000
#endif

#ifdef	TINY
#define	ACCOUNTS	    1000
#define	BRANCHES	      10
#define	TELLERS		     100
#define	HISTORY		   10000
#endif

#if !defined(VALID_SCALING) && !defined(TINY)
#define	ACCOUNTS	  100000
#define	BRANCHES	      10
#define	TELLERS		     100
#define	HISTORY		  259200
#endif

#define	HISTORY_LEN	    100
#define	RECLEN		    100
#define	BEGID		1000000

struct Defrec {
	u_int32_t   id;
	u_int32_t   balance;
	u_int8_t    pad[RECLEN - sizeof(u_int32_t) - sizeof(u_int32_t)];
};

struct Histrec {
	u_int32_t   aid;
	u_int32_t   bid;
	u_int32_t   tid;
	u_int32_t   amount;
	u_int8_t    pad[RECLEN - 4 * sizeof(u_int32_t)];
};

int
main(int argc, char *argv[])
{
	unsigned long seed;
	int accounts, branches, tellers, history;
	int iflag, mpool, ntxns, txn_no_sync;
	const char *home;
	char *endarg;

	home = "TESTDIR";
	accounts = branches = history = tellers = 0;
	txn_no_sync = 0;
	mpool = ntxns = 0;
	verbose = 0;
	iflag = 0;
	seed = (unsigned long)time(NULL);

	for (int i = 1; i < argc; ++i) {

		if (strcmp(argv[i], "-a") == 0) {
			// Number of account records
			if ((accounts = atoi(argv[++i])) <= 0)
				return (invarg('a', argv[i]));
		}
		else if (strcmp(argv[i], "-b") == 0) {
			// Number of branch records
			if ((branches = atoi(argv[++i])) <= 0)
				return (invarg('b', argv[i]));
		}
		else if (strcmp(argv[i], "-c") == 0) {
			// Cachesize in bytes
			if ((mpool = atoi(argv[++i])) <= 0)
				return (invarg('c', argv[i]));
		}
		else if (strcmp(argv[i], "-f") == 0) {
			// Fast mode: no txn sync.
			txn_no_sync = 1;
		}
		else if (strcmp(argv[i], "-h") == 0) {
			// DB  home.
			home = argv[++i];
		}
		else if (strcmp(argv[i], "-i") == 0) {
			// Initialize the test.
			iflag = 1;
		}
		else if (strcmp(argv[i], "-n") == 0) {
			// Number of transactions
			if ((ntxns = atoi(argv[++i])) <= 0)
				return (invarg('n', argv[i]));
		}
		else if (strcmp(argv[i], "-S") == 0) {
			// Random number seed.
			seed = strtoul(argv[++i], &endarg, 0);
			if (*endarg != '\0')
				return (invarg('S', argv[i]));
		}
		else if (strcmp(argv[i], "-s") == 0) {
			// Number of history records
			if ((history = atoi(argv[++i])) <= 0)
				return (invarg('s', argv[i]));
		}
		else if (strcmp(argv[i], "-t") == 0) {
			// Number of teller records
			if ((tellers = atoi(argv[++i])) <= 0)
				return (invarg('t', argv[i]));
		}
		else if (strcmp(argv[i], "-v") == 0) {
			// Verbose option.
			verbose = 1;
		}
		else {
			return (usage());
		}
	}

	srand((unsigned int)seed);

	accounts = accounts == 0 ? ACCOUNTS : accounts;
	branches = branches == 0 ? BRANCHES : branches;
	tellers = tellers == 0 ? TELLERS : tellers;
	history = history == 0 ? HISTORY : history;

	if (verbose)
		cout << (long)accounts << " Accounts, "
		     << (long)branches << " Branches, "
		     << (long)tellers << " Tellers, "
		     << (long)history << " History\n";

	try {
		// Initialize the database environment.
		// Must be done in within a try block, unless you
		// change the error model in the environment options.
		//
		TpcbExample app(home, mpool, iflag,
		                txn_no_sync ? DB_TXN_NOSYNC : 0);

		if (iflag) {
			if (ntxns != 0)
				return (usage());
			app.populate(accounts, branches, history, tellers);
		}
		else {
			if (ntxns == 0)
				return (usage());
			app.run(ntxns, accounts, branches, tellers);
		}

		app.close(0);
		return (EXIT_SUCCESS);
	}
	catch (DbException &dbe) {
		cerr << "TpcbExample: " << dbe.what() << "\n";
		return (EXIT_FAILURE);
	}
}

static int
invarg(int arg, char *str)
{
	cerr << "TpcbExample: invalid argument for -"
	     << (char)arg << ": " << str << "\n";
	return (EXIT_FAILURE);
}

static int
usage()
{
	cerr << "usage: TpcbExample [-fiv] [-a accounts] [-b branches]\n"
	     << "                   [-c cachesize] [-h home] [-n transactions ]\n"
	     << "                   [-S seed] [-s history] [-t tellers]\n";
	return (EXIT_FAILURE);
}

TpcbExample::TpcbExample(const char *home, int cachesize,
			 int initializing, int flags)
:	DbEnv(0)
{
	u_int32_t local_flags;

	set_error_stream(&cerr);
	set_errpfx("TpcbExample");
	(void)set_cachesize(0, cachesize == 0 ?
	                    4 * 1024 * 1024 : (u_int32_t)cachesize, 0);

	if (flags & (DB_TXN_NOSYNC))
		set_flags(DB_TXN_NOSYNC, 1);
	flags &= ~(DB_TXN_NOSYNC);

	local_flags = flags | DB_CREATE | DB_INIT_MPOOL;
	if (!initializing)
		local_flags |= DB_INIT_TXN | DB_INIT_LOCK | DB_INIT_LOG;
	open(home, local_flags, 0);
}

//
// Initialize the database to the specified number of accounts, branches,
// history records, and tellers.
//
void
TpcbExample::populate(int accounts, int branches, int history, int tellers)
{
	Db *dbp;

	int err;
	u_int32_t balance, idnum;
	u_int32_t end_anum, end_bnum, end_tnum;
	u_int32_t start_anum, start_bnum, start_tnum;

	idnum = BEGID;
	balance = 500000;

	dbp = new Db(this, 0);
	dbp->set_h_nelem((unsigned int)accounts);

	if ((err = dbp->open(NULL, "account", NULL, DB_HASH,
	                     DB_CREATE | DB_TRUNCATE, 0644)) != 0) {
		DbException except("Account file create failed", err);
		throw except;
	}

	start_anum = idnum;
	populateTable(dbp, idnum, balance, accounts, "account");
	idnum += accounts;
	end_anum = idnum - 1;
	if ((err = dbp->close(0)) != 0) {
		DbException except("Account file close failed", err);
		throw except;
	}
	delete dbp;
	if (verbose)
		cout << "Populated accounts: "
		     << (long)start_anum << " - " << (long)end_anum << "\n";

	dbp = new Db(this, 0);
	//
	// Since the number of branches is very small, we want to use very
	// small pages and only 1 key per page.  This is the poor-man's way
	// of getting key locking instead of page locking.
	//
	dbp->set_h_ffactor(1);
	dbp->set_h_nelem((unsigned int)branches);
	dbp->set_pagesize(512);

	if ((err = dbp->open(NULL, "branch", NULL, DB_HASH,
	                     DB_CREATE | DB_TRUNCATE, 0644)) != 0) {
		DbException except("Branch file create failed", err);
		throw except;
	}
	start_bnum = idnum;
	populateTable(dbp, idnum, balance, branches, "branch");
	idnum += branches;
	end_bnum = idnum - 1;