git.ozlabs.org Git - ccan/blob - ccan/tdb2/tools/growtdb-bench.c

   1 #include "tdb2.h"
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6 #include <err.h>
   7 #include <sys/types.h>
   8 #include <sys/stat.h>
   9 #include <fcntl.h>
  10
  11 static void logfn(struct tdb_context *tdb,
  12                   enum tdb_log_level level,
  13                   enum TDB_ERROR ecode,
  14                   const char *message,
  15                   void *data)
  16 {
  17         fprintf(stderr, "tdb:%s:%s:%s\n",
  18                 tdb_name(tdb), tdb_errorstr(ecode), message);
  19 }
  20
  21 int main(int argc, char *argv[])
  22 {
  23         unsigned int i, j, users, groups;
  24         TDB_DATA idxkey, idxdata;
  25         TDB_DATA k, d, gk;
  26         char cmd[100];
  27         struct tdb_context *tdb;
  28         enum TDB_ERROR ecode;
  29         union tdb_attribute log;
  30
  31         if (argc != 3) {
  32                 printf("Usage: growtdb-bench <users> <groups>\n");
  33                 exit(1);
  34         }
  35         users = atoi(argv[1]);
  36         groups = atoi(argv[2]);
  37
  38         sprintf(cmd, "cat /proc/%i/statm", getpid());
  39
  40         log.base.attr = TDB_ATTRIBUTE_LOG;
  41         log.base.next = NULL;
  42         log.log.fn = logfn;
  43
  44         tdb = tdb_open("/tmp/growtdb.tdb", TDB_DEFAULT,
  45                        O_RDWR|O_CREAT|O_TRUNC, 0600, &log);
  46
  47         idxkey.dptr = (unsigned char *)"User index";
  48         idxkey.dsize = strlen("User index");
  49         idxdata.dsize = 51;
  50         idxdata.dptr = calloc(idxdata.dsize, 1);
  51
  52         /* Create users. */
  53         k.dsize = 48;
  54         k.dptr = calloc(k.dsize, 1);
  55         d.dsize = 64;
  56         d.dptr = calloc(d.dsize, 1);
  57
  58         tdb_transaction_start(tdb);
  59         for (i = 0; i < users; i++) {
  60                 memcpy(k.dptr, &i, sizeof(i));
  61                 ecode = tdb_store(tdb, k, d, TDB_INSERT);
  62                 if (ecode != TDB_SUCCESS)
  63                         errx(1, "tdb insert failed: %s", tdb_errorstr(ecode));
  64
  65                 /* This simulates a growing index record. */
  66                 ecode = tdb_append(tdb, idxkey, idxdata);
  67                 if (ecode != TDB_SUCCESS)
  68                         errx(1, "tdb append failed: %s", tdb_errorstr(ecode));
  69         }
  70         if ((ecode = tdb_transaction_commit(tdb)) != 0)
  71                 errx(1, "tdb commit1 failed: %s", tdb_errorstr(ecode));
  72
  73         if ((ecode = tdb_check(tdb, NULL, NULL)) != 0)
  74                 errx(1, "tdb_check failed after initial insert!");
  75
  76         system(cmd);
  77
  78         /* Now put them all in groups: add 32 bytes to each record for
  79          * a group. */
  80         gk.dsize = 48;
  81         gk.dptr = calloc(k.dsize, 1);
  82         gk.dptr[gk.dsize-1] = 1;
  83
  84         d.dsize = 32;
  85         for (i = 0; i < groups; i++) {
  86                 tdb_transaction_start(tdb);
  87                 /* Create the "group". */
  88                 memcpy(gk.dptr, &i, sizeof(i));
  89                 ecode = tdb_store(tdb, gk, d, TDB_INSERT);
  90                 if (ecode != TDB_SUCCESS)
  91                         errx(1, "tdb insert failed: %s", tdb_errorstr(ecode));
  92
  93                 /* Now populate it. */
  94                 for (j = 0; j < users; j++) {
  95                         /* Append to the user. */
  96                         memcpy(k.dptr, &j, sizeof(j));
  97                         if ((ecode = tdb_append(tdb, k, d)) != 0)
  98                                 errx(1, "tdb append failed: %s",
  99                                      tdb_errorstr(ecode));
 100
 101                         /* Append to the group. */
 102                         if ((ecode = tdb_append(tdb, gk, d)) != 0)
 103                                 errx(1, "tdb append failed: %s",
 104                                      tdb_errorstr(ecode));
 105                 }
 106                 if ((ecode = tdb_transaction_commit(tdb)) != 0)
 107                         errx(1, "tdb commit2 failed: %s", tdb_errorstr(ecode));
 108                 if ((ecode = tdb_check(tdb, NULL, NULL)) != 0)
 109                         errx(1, "tdb_check failed after iteration %i!", i);
 110                 system(cmd);
 111         }
 112
 113         return 0;
 114 }