tdb/tools/tdbtest.c

説明を見る。

/* a test program for tdb - the trivial database */

#include "replace.h"
#include "tdb.h"
#include "system/filesys.h"
#include "system/time.h"

#include <gdbm.h>


#define DELETE_PROB 7
#define STORE_PROB 5

static struct tdb_context *db;
static GDBM_FILE gdbm;

struct timeval tp1,tp2;

static void _start_timer(void)
{
        gettimeofday(&tp1,NULL);
}

static double _end_timer(void)
{
        gettimeofday(&tp2,NULL);
        return((tp2.tv_sec - tp1.tv_sec) + 
               (tp2.tv_usec - tp1.tv_usec)*1.0e-6);
}

static void fatal(const char *why)
{
        perror(why);
        exit(1);
}

#ifdef PRINTF_ATTRIBUTE
static void tdb_log(struct tdb_context *tdb, int level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
#endif
static void tdb_log(struct tdb_context *tdb, int level, const char *format, ...)
{
        va_list ap;
    
        va_start(ap, format);
        vfprintf(stdout, format, ap);
        va_end(ap);
        fflush(stdout);
}

static void compare_db(void)
{
        TDB_DATA d, key, nextkey;
        datum gd, gkey, gnextkey;

        key = tdb_firstkey(db);
        while (key.dptr) {
                d = tdb_fetch(db, key);
                gkey.dptr = key.dptr;
                gkey.dsize = key.dsize;

                gd = gdbm_fetch(gdbm, gkey);

                if (!gd.dptr) fatal("key not in gdbm");
                if (gd.dsize != d.dsize) fatal("data sizes differ");
                if (memcmp(gd.dptr, d.dptr, d.dsize)) {
                        fatal("data differs");
                }

                nextkey = tdb_nextkey(db, key);
                free(key.dptr);
                free(d.dptr);
                free(gd.dptr);
                key = nextkey;
        }

        gkey = gdbm_firstkey(gdbm);
        while (gkey.dptr) {
                gd = gdbm_fetch(gdbm, gkey);
                key.dptr = gkey.dptr;
                key.dsize = gkey.dsize;

                d = tdb_fetch(db, key);

                if (!d.dptr) fatal("key not in db");
                if (d.dsize != gd.dsize) fatal("data sizes differ");
                if (memcmp(d.dptr, gd.dptr, gd.dsize)) {
                        fatal("data differs");
                }

                gnextkey = gdbm_nextkey(gdbm, gkey);
                free(gkey.dptr);
                free(gd.dptr);
                free(d.dptr);
                gkey = gnextkey;
        }
}

static char *randbuf(int len)
{
        char *buf;
        int i;
        buf = (char *)malloc(len+1);

        for (i=0;i<len;i++) {
                buf[i] = 'a' + (rand() % 26);
        }
        buf[i] = 0;
        return buf;
}

static void addrec_db(void)
{
        int klen, dlen;
        char *k, *d;
        TDB_DATA key, data;

        klen = 1 + (rand() % 4);
        dlen = 1 + (rand() % 100);

        k = randbuf(klen);
        d = randbuf(dlen);

        key.dptr = k;
        key.dsize = klen+1;

        data.dptr = d;
        data.dsize = dlen+1;

        if (rand() % DELETE_PROB == 0) {
                tdb_delete(db, key);
        } else if (rand() % STORE_PROB == 0) {
                if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
                        fatal("tdb_store failed");
                }
        } else {
                data = tdb_fetch(db, key);
                if (data.dptr) free(data.dptr);
        }

        free(k);
        free(d);
}

static void addrec_gdbm(void)
{
        int klen, dlen;
        char *k, *d;
        datum key, data;

        klen = 1 + (rand() % 4);
        dlen = 1 + (rand() % 100);

        k = randbuf(klen);
        d = randbuf(dlen);

        key.dptr = k;
        key.dsize = klen+1;

        data.dptr = d;
        data.dsize = dlen+1;

        if (rand() % DELETE_PROB == 0) {
                gdbm_delete(gdbm, key);
        } else if (rand() % STORE_PROB == 0) {
                if (gdbm_store(gdbm, key, data, GDBM_REPLACE) != 0) {
                        fatal("gdbm_store failed");
                }
        } else {
                data = gdbm_fetch(gdbm, key);
                if (data.dptr) free(data.dptr);
        }

        free(k);
        free(d);
}

static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
{
#if 0
        printf("[%s] [%s]\n", key.dptr, dbuf.dptr);
#endif
        tdb_delete(tdb, key);
        return 0;
}

static void merge_test(void)
{
        int i;
        char keys[5][2];
        char tdata[] = "test";
        TDB_DATA key, data;
        
        for (i = 0; i < 5; i++) {
                snprintf(keys[i],2, "%d", i);
                key.dptr = keys[i];
                key.dsize = 2;
                
                data.dptr = tdata;
                data.dsize = 4;
                
                if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
                        fatal("tdb_store failed");
                }
        }

        key.dptr = keys[0];
        tdb_delete(db, key);
        key.dptr = keys[4];
        tdb_delete(db, key);
        key.dptr = keys[2];
        tdb_delete(db, key);
        key.dptr = keys[1];
        tdb_delete(db, key);
        key.dptr = keys[3];
        tdb_delete(db, key);
}
        
 int main(int argc, const char *argv[])
{
        int i, seed=0;
        int loops = 10000;
        int num_entries;
        char test_gdbm[] = "test.gdbm";

        unlink("test.gdbm");

        db = tdb_open("test.tdb", 0, TDB_CLEAR_IF_FIRST, 
                      O_RDWR | O_CREAT | O_TRUNC, 0600);
        gdbm = gdbm_open(test_gdbm, 512, GDBM_WRITER|GDBM_NEWDB|GDBM_FAST, 
                         0600, NULL);

        if (!db || !gdbm) {
                fatal("db open failed");
        }

#if 1
        srand(seed);
        _start_timer();
        for (i=0;i<loops;i++) addrec_gdbm();
        printf("gdbm got %.2f ops/sec\n", i/_end_timer());
#endif

        merge_test();

        srand(seed);
        _start_timer();
        for (i=0;i<loops;i++) addrec_db();
        printf("tdb got %.2f ops/sec\n", i/_end_timer());

        if (tdb_validate_freelist(db, &num_entries) == -1) {
                printf("tdb freelist is corrupt\n");
        } else {
                printf("tdb freelist is good (%d entries)\n", num_entries);
        }

        compare_db();

        printf("traversed %d records\n", tdb_traverse(db, traverse_fn, NULL));
        printf("traversed %d records\n", tdb_traverse(db, traverse_fn, NULL));

        tdb_close(db);
        gdbm_close(gdbm);

        return 0;
}

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