예제 #1
0
/*
** Return the maximum amount of memory that has ever been
** checked out since either the beginning of this process
** or since the most recent reset.
*/
sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag);
  res = (sqlite3_int64)mx;  /* Work around bug in Borland C. Ticket #3216 */
  return res;
}
예제 #2
0
sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag);
  res = (sqlite3_int64)mx;  
  return res;
}
예제 #3
0
/*
** Return the amount of memory currently checked out.
*/
sqlite3_int64 sqlite3_memory_used(void){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0);
  res = (sqlite3_int64)n;  /* Work around bug in Borland C. Ticket #3216 */
  return res;
}
예제 #4
0
sqlite3_int64 sqlite3_memory_used(void){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0);
  res = (sqlite3_int64)n;  
  return res;
}
예제 #5
0
/*
** SQL functions to call the sqlite3_status function and return results.
*/
static void statusFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int op, mx, cur, resetFlag, rc;
  if( sqlite3_value_type(argv[0])==SQLITE_INTEGER ){
    op = sqlite3_value_int(argv[0]);
  }else if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){
    int i;
    const char *zName;
    static const struct {
      const char *zName;
      int op;
    } aOp[] = {
      { "MEMORY_USED",         SQLITE_STATUS_MEMORY_USED         },
      { "PAGECACHE_USED",      SQLITE_STATUS_PAGECACHE_USED      },
      { "PAGECACHE_OVERFLOW",  SQLITE_STATUS_PAGECACHE_OVERFLOW  },
      { "SCRATCH_USED",        SQLITE_STATUS_SCRATCH_USED        },
      { "SCRATCH_OVERFLOW",    SQLITE_STATUS_SCRATCH_OVERFLOW    },
      { "MALLOC_SIZE",         SQLITE_STATUS_MALLOC_SIZE         },
    };
    int nOp = sizeof(aOp)/sizeof(aOp[0]);
    zName = (const char*)sqlite3_value_text(argv[0]);
    for(i=0; i<nOp; i++){
      if( strcmp(aOp[i].zName, zName)==0 ){
        op = aOp[i].op;
        break;
      }
    }
    if( i>=nOp ){
      char *zMsg = sqlite3_mprintf("unknown status property: %s", zName);
      sqlite3_result_error(context, zMsg, -1);
      sqlite3_free(zMsg);
      return;
    }
  }else{
    sqlite3_result_error(context, "unknown status type", -1);
    return;
  }
  if( argc==2 ){
    resetFlag = sqlite3_value_int(argv[1]);
  }else{
    resetFlag = 0;
  }
  rc = sqlite3_status(op, &cur, &mx, resetFlag);
  if( rc!=SQLITE_OK ){
    char *zMsg = sqlite3_mprintf("sqlite3_status(%d,...) returns %d", op, rc);
    sqlite3_result_error(context, zMsg, -1);
    sqlite3_free(zMsg);
    return;
  } 
  if( argc==2 ){
    sqlite3_result_int(context, mx);
  }else{
    sqlite3_result_int(context, cur);
  }
}
 int native_status(JNIEnv* env, jobject object, jint operation, jboolean reset)
 {
   int value;
   int highWater;
   sqlite3 * handle = (sqlite3 *)env->GetLongField(object, offset_db_handle);
   int status = sqlite3_status(operation, &value, &highWater, reset);
   if(status != SQLITE_OK){
     throw_sqlite3_exception(env, handle);
   }
   return value;
 }
예제 #7
0
/*
** Advance a memstat_cursor to its next row of output.
*/
static int memstatNext(sqlite3_vtab_cursor *cur){
  memstat_cursor *pCur = (memstat_cursor*)cur;
  int i;
  assert( pCur->iRowid<=MSV_NROW );
  while(1){
    i = (int)pCur->iRowid - 1;
    if( i<0 || (aMemstatColumn[i].mNull & 2)!=0 || (++pCur->iDb)>=pCur->nDb ){
      pCur->iRowid++;
      if( pCur->iRowid>MSV_NROW ) return SQLITE_OK;  /* End of the table */
      pCur->iDb = 0;
      i++;
    }
    pCur->aVal[0] = 0;
    pCur->aVal[1] = 0;    
    switch( aMemstatColumn[i].eType ){
      case MSV_GSTAT: {
        if( sqlite3_libversion_number()>=3010000 ){
          sqlite3_status64(aMemstatColumn[i].eOp,
                           &pCur->aVal[0], &pCur->aVal[1],0);
        }else{
          int xCur, xHiwtr;
          sqlite3_status(aMemstatColumn[i].eOp, &xCur, &xHiwtr, 0);
          pCur->aVal[0] = xCur;
          pCur->aVal[1] = xHiwtr;
        }
        break;
      }
      case MSV_DB: {
        int xCur, xHiwtr;
        sqlite3_db_status(pCur->db, aMemstatColumn[i].eOp, &xCur, &xHiwtr, 0);
        pCur->aVal[0] = xCur;
        pCur->aVal[1] = xHiwtr;
        break;
      }
      case MSV_ZIPVFS: {
        int rc;
        rc = sqlite3_file_control(pCur->db, pCur->azDb[pCur->iDb],
                                  aMemstatColumn[i].eOp, (void*)&pCur->aVal[0]);
        if( rc!=SQLITE_OK ) continue;
        break;
      }
    }
    break;
  }
  return SQLITE_OK;
}
예제 #8
0
QSharedPointer<SQLiteMemoryInfo> SQLite::getMemoryInfo(bool reset, int &rc)
{
    QSharedPointer<SQLiteMemoryInfo> pMemInfo(new SQLiteMemoryInfo());

    int current;
    int high;

    int resetFlag = (int)reset;

    rc = sqlite3_status(SQLITE_STATUS_MEMORY_USED, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentTotalMemoryUsed(current);
    pMemInfo->setHighTotalMemoryUsed(high);

    rc = sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentPageCacheUsed(current);
    pMemInfo->setHighPageCacheUsed(high);

    rc = sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentPageCacheOverflow(current);
    pMemInfo->setHighPageCacheOverflow(high);

    rc = sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentMallocSize(current);
    pMemInfo->setHighMallocSize(high);

    rc = sqlite3_status(SQLITE_STATUS_PARSER_STACK, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentParserStack(current);
    pMemInfo->setHighParserStack(high);

    rc = sqlite3_status(SQLITE_STATUS_PAGECACHE_SIZE, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentPageCacheSize(current);
    pMemInfo->setHighPageCacheSize(high);

    rc = sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &current, &high, resetFlag);

    if (rc != SQLITE_OK) {
        return QSharedPointer<SQLiteMemoryInfo>(0);
    }

    pMemInfo->setCurrentMallocCount(current);
    pMemInfo->setHighMallocCount(high);

    return pMemInfo;
}
예제 #9
0
int main(int argc, char **argv){
  const char *zFileToRead = 0;  /* Input file.  NULL for stdin */
  const char *zDbName = 0;      /* Name of the database file to create */
  int useWithoutRowid = 0;      /* True for --without-rowid */
  int iMode = MODE_INSERT;      /* One of MODE_xxxxx */
  int useNocase = 0;            /* True for --nocase */
  int doTrace = 0;              /* True for --trace */
  int showStats = 0;            /* True for --stats */
  int showSummary = 0;          /* True for --summary */
  int showTimer = 0;            /* True for --timer */
  int cacheSize = 0;            /* Desired cache size.  0 means default */
  int pageSize = 0;             /* Desired page size.  0 means default */
  int commitInterval = 0;       /* How often to commit.  0 means never */
  int noSync = 0;               /* True for --nosync */
  const char *zJMode = 0;       /* Journal mode */
  int nOp = 0;                  /* Operation counter */
  int i, j;                     /* Loop counters */
  sqlite3 *db;                  /* The SQLite database connection */
  char *zSql;                   /* Constructed SQL statement */
  sqlite3_stmt *pInsert = 0;    /* The INSERT statement */
  sqlite3_stmt *pUpdate = 0;    /* The UPDATE statement */
  sqlite3_stmt *pSelect = 0;    /* The SELECT statement */
  sqlite3_stmt *pDelete = 0;    /* The DELETE statement */
  FILE *in;                     /* The open input file */
  int rc;                       /* Return code from an SQLite interface */
  int iCur, iHiwtr;             /* Statistics values, current and "highwater" */
  sqlite3_int64 sumCnt = 0;     /* Sum in QUERY mode */
  sqlite3_int64 startTime;
  char zInput[2000];            /* A single line of input */

  /* Process command-line arguments */
  for(i=1; i<argc; i++){
    const char *z = argv[i];
    if( z[0]=='-' ){
      do{ z++; }while( z[0]=='-' );
      if( strcmp(z,"without-rowid")==0 ){
        useWithoutRowid = 1;
      }else if( strcmp(z,"replace")==0 ){
        iMode = MODE_REPLACE;
      }else if( strcmp(z,"select")==0 ){
        iMode = MODE_SELECT;
      }else if( strcmp(z,"insert")==0 ){
        iMode = MODE_INSERT;
      }else if( strcmp(z,"update")==0 ){
        iMode = MODE_UPDATE;
      }else if( strcmp(z,"delete")==0 ){
        iMode = MODE_DELETE;
      }else if( strcmp(z,"query")==0 ){
        iMode = MODE_QUERY;
      }else if( strcmp(z,"nocase")==0 ){
        useNocase = 1;
      }else if( strcmp(z,"trace")==0 ){
        doTrace = 1;
      }else if( strcmp(z,"nosync")==0 ){
        noSync = 1;
      }else if( strcmp(z,"stats")==0 ){
        showStats = 1;
      }else if( strcmp(z,"summary")==0 ){
        showSummary = 1;
      }else if( strcmp(z,"timer")==0 ){
        showTimer = i;
      }else if( strcmp(z,"cachesize")==0 && i<argc-1 ){
        i++;
        cacheSize = atoi(argv[i]);
      }else if( strcmp(z,"pagesize")==0 && i<argc-1 ){
        i++;
        pageSize = atoi(argv[i]);
      }else if( strcmp(z,"commit")==0 && i<argc-1 ){
        i++;
        commitInterval = atoi(argv[i]);
      }else if( strcmp(z,"journal")==0 && i<argc-1 ){
        zJMode = argv[++i];
      }else{
        fatal_error("unknown option: %s\n", argv[i]);
      }
    }else if( zDbName==0 ){
      zDbName = argv[i];
    }else if( zFileToRead==0 ){
      zFileToRead = argv[i];
    }else{
      fatal_error("surplus argument: %s\n", argv[i]);
    }
  }
  if( zDbName==0 ){
    fatal_error("Usage: %s [--options] DATABASE [INPUTFILE]\n", argv[0]);
  }
  startTime = realTime();

  /* Open the database and the input file */
  if( sqlite3_open(zDbName, &db) ){
    fatal_error("Cannot open database file: %s\n", zDbName);
  }
  if( zFileToRead ){
    in = fopen(zFileToRead, "rb");
    if( in==0 ){
      fatal_error("Could not open input file \"%s\"\n", zFileToRead);
    }
  }else{
    in = stdin;
  }

  /* Set database connection options */
  if( doTrace ) sqlite3_trace(db, traceCallback, 0);
  if( pageSize ){
    zSql = sqlite3_mprintf("PRAGMA page_size=%d", pageSize);
    sqlite3_exec(db, zSql, 0, 0, 0);
    sqlite3_free(zSql);
  }
  if( cacheSize ){
    zSql = sqlite3_mprintf("PRAGMA cache_size=%d", cacheSize);
    sqlite3_exec(db, zSql, 0, 0, 0);
    sqlite3_free(zSql);
  }
  if( noSync ) sqlite3_exec(db, "PRAGMA synchronous=OFF", 0, 0, 0);
  if( zJMode ){
    zSql = sqlite3_mprintf("PRAGMA journal_mode=%s", zJMode);
    sqlite3_exec(db, zSql, 0, 0, 0);
    sqlite3_free(zSql);
  }


  /* Construct the "wordcount" table into which to put the words */
  if( sqlite3_exec(db, "BEGIN IMMEDIATE", 0, 0, 0) ){
    fatal_error("Could not start a transaction\n");
  }
  zSql = sqlite3_mprintf(
     "CREATE TABLE IF NOT EXISTS wordcount(\n"
     "  word TEXT PRIMARY KEY COLLATE %s,\n"
     "  cnt INTEGER\n"
     ")%s",
     useNocase ? "nocase" : "binary",
     useWithoutRowid ? " WITHOUT ROWID" : ""
  );
  if( zSql==0 ) fatal_error("out of memory\n");
  rc = sqlite3_exec(db, zSql, 0, 0, 0);
  if( rc ) fatal_error("Could not create the wordcount table: %s.\n",
                       sqlite3_errmsg(db));
  sqlite3_free(zSql);

  /* Prepare SQL statements that will be needed */
  if( iMode==MODE_QUERY ){
    rc = sqlite3_prepare_v2(db,
          "SELECT cnt FROM wordcount WHERE word=?1",
          -1, &pSelect, 0);
    if( rc ) fatal_error("Could not prepare the SELECT statement: %s\n",
                          sqlite3_errmsg(db));
  }
  if( iMode==MODE_SELECT ){
    rc = sqlite3_prepare_v2(db,
          "SELECT 1 FROM wordcount WHERE word=?1",
          -1, &pSelect, 0);
    if( rc ) fatal_error("Could not prepare the SELECT statement: %s\n",
                          sqlite3_errmsg(db));
    rc = sqlite3_prepare_v2(db,
          "INSERT INTO wordcount(word,cnt) VALUES(?1,1)",
          -1, &pInsert, 0);
    if( rc ) fatal_error("Could not prepare the INSERT statement: %s\n",
                         sqlite3_errmsg(db));
  }
  if( iMode==MODE_SELECT || iMode==MODE_UPDATE || iMode==MODE_INSERT ){
    rc = sqlite3_prepare_v2(db,
          "UPDATE wordcount SET cnt=cnt+1 WHERE word=?1",
          -1, &pUpdate, 0);
    if( rc ) fatal_error("Could not prepare the UPDATE statement: %s\n",
                         sqlite3_errmsg(db));
  }
  if( iMode==MODE_INSERT ){
    rc = sqlite3_prepare_v2(db,
          "INSERT OR IGNORE INTO wordcount(word,cnt) VALUES(?1,1)",
          -1, &pInsert, 0);
    if( rc ) fatal_error("Could not prepare the INSERT statement: %s\n",
                         sqlite3_errmsg(db));
  }
  if( iMode==MODE_UPDATE ){
    rc = sqlite3_prepare_v2(db,
          "INSERT OR IGNORE INTO wordcount(word,cnt) VALUES(?1,0)",
          -1, &pInsert, 0);
    if( rc ) fatal_error("Could not prepare the INSERT statement: %s\n",
                         sqlite3_errmsg(db));
  }
  if( iMode==MODE_REPLACE ){
    rc = sqlite3_prepare_v2(db,
          "REPLACE INTO wordcount(word,cnt)"
          "VALUES(?1,coalesce((SELECT cnt FROM wordcount WHERE word=?1),0)+1)",
          -1, &pInsert, 0);
    if( rc ) fatal_error("Could not prepare the REPLACE statement: %s\n",
                          sqlite3_errmsg(db));
  }
  if( iMode==MODE_DELETE ){
    rc = sqlite3_prepare_v2(db,
          "DELETE FROM wordcount WHERE word=?1",
          -1, &pDelete, 0);
    if( rc ) fatal_error("Could not prepare the DELETE statement: %s\n",
                         sqlite3_errmsg(db));
  }

  /* Process the input file */
  while( fgets(zInput, sizeof(zInput), in) ){
    for(i=0; zInput[i]; i++){
      if( !isalpha(zInput[i]) ) continue;
      for(j=i+1; isalpha(zInput[j]); j++){}

      /* Found a new word at zInput[i] that is j-i bytes long. 
      ** Process it into the wordcount table.  */
      if( iMode==MODE_DELETE ){
        sqlite3_bind_text(pDelete, 1, zInput+i, j-i, SQLITE_STATIC);
        if( sqlite3_step(pDelete)!=SQLITE_DONE ){
          fatal_error("DELETE failed: %s\n", sqlite3_errmsg(db));
        }
        sqlite3_reset(pDelete);
      }else if( iMode==MODE_SELECT ){
        sqlite3_bind_text(pSelect, 1, zInput+i, j-i, SQLITE_STATIC);
        rc = sqlite3_step(pSelect);
        sqlite3_reset(pSelect);
        if( rc==SQLITE_ROW ){
          sqlite3_bind_text(pUpdate, 1, zInput+i, j-i, SQLITE_STATIC);
          if( sqlite3_step(pUpdate)!=SQLITE_DONE ){
            fatal_error("UPDATE failed: %s\n", sqlite3_errmsg(db));
          }
          sqlite3_reset(pUpdate);
        }else if( rc==SQLITE_DONE ){
          sqlite3_bind_text(pInsert, 1, zInput+i, j-i, SQLITE_STATIC);
          if( sqlite3_step(pInsert)!=SQLITE_DONE ){
            fatal_error("Insert failed: %s\n", sqlite3_errmsg(db));
          }
          sqlite3_reset(pInsert);
        }else{
          fatal_error("SELECT failed: %s\n", sqlite3_errmsg(db));
        }
      }else if( iMode==MODE_QUERY ){
        sqlite3_bind_text(pSelect, 1, zInput+i, j-i, SQLITE_STATIC);
        if( sqlite3_step(pSelect)==SQLITE_ROW ){
          sumCnt += sqlite3_column_int64(pSelect, 0);
        }
        sqlite3_reset(pSelect);
      }else{
        sqlite3_bind_text(pInsert, 1, zInput+i, j-i, SQLITE_STATIC);
        if( sqlite3_step(pInsert)!=SQLITE_DONE ){
          fatal_error("INSERT failed: %s\n", sqlite3_errmsg(db));
        }
        sqlite3_reset(pInsert);
        if( iMode==MODE_UPDATE
         || (iMode==MODE_INSERT && sqlite3_changes(db)==0)
        ){
          sqlite3_bind_text(pUpdate, 1, zInput+i, j-i, SQLITE_STATIC);
          if( sqlite3_step(pUpdate)!=SQLITE_DONE ){
            fatal_error("UPDATE failed: %s\n", sqlite3_errmsg(db));
          }
          sqlite3_reset(pUpdate);
        }
      }
      i = j-1;

      /* Increment the operation counter.  Do a COMMIT if it is time. */
      nOp++;
      if( commitInterval>0 && (nOp%commitInterval)==0 ){
        sqlite3_exec(db, "COMMIT; BEGIN IMMEDIATE", 0, 0, 0);
      }
    }
  }
  sqlite3_exec(db, "COMMIT", 0, 0, 0);
  if( zFileToRead ) fclose(in);
  sqlite3_finalize(pInsert);
  sqlite3_finalize(pUpdate);
  sqlite3_finalize(pSelect);
  sqlite3_finalize(pDelete);

  if( iMode==MODE_QUERY ){
    printf("sum of cnt: %lld\n", sumCnt);
    rc = sqlite3_prepare_v2(db,"SELECT sum(cnt*cnt) FROM wordcount", -1,
                            &pSelect, 0);
    if( rc==SQLITE_OK && sqlite3_step(pSelect)==SQLITE_ROW ){
      printf("double-check: %lld\n", sqlite3_column_int64(pSelect, 0));
    }
    sqlite3_finalize(pSelect);
  }


  if( showTimer ){
    sqlite3_int64 elapseTime = realTime() - startTime;
    fprintf(stderr, "%3d.%03d wordcount", (int)(elapseTime/1000),
                                   (int)(elapseTime%1000));
    for(i=1; i<argc; i++) if( i!=showTimer ) fprintf(stderr, " %s", argv[i]);
    fprintf(stderr, "\n");
  }

  if( showSummary ){
    sqlite3_create_function(db, "checksum", -1, SQLITE_UTF8, 0,
                            0, checksumStep, checksumFinalize);
    sqlite3_exec(db, 
      "SELECT 'count(*):  ', count(*) FROM wordcount;\n"
      "SELECT 'sum(cnt):  ', sum(cnt) FROM wordcount;\n"
      "SELECT 'max(cnt):  ', max(cnt) FROM wordcount;\n"
      "SELECT 'avg(cnt):  ', avg(cnt) FROM wordcount;\n"
      "SELECT 'sum(cnt=1):', sum(cnt=1) FROM wordcount;\n"
      "SELECT 'top 10:    ', group_concat(word, ', ') FROM "
         "(SELECT word FROM wordcount ORDER BY cnt DESC, word LIMIT 10);\n"
      "SELECT 'checksum:  ', checksum(word, cnt) FROM "
         "(SELECT word, cnt FROM wordcount ORDER BY word);\n"
      "PRAGMA integrity_check;\n",
      printResult, 0, 0);
  }

  /* Database connection statistics printed after both prepared statements
  ** have been finalized */
  if( showStats ){
    sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, 0);
    printf("-- Lookaside Slots Used:        %d (max %d)\n", iCur,iHiwtr);
    sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &iCur, &iHiwtr, 0);
    printf("-- Successful lookasides:       %d\n", iHiwtr);
    sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &iCur,&iHiwtr,0);
    printf("-- Lookaside size faults:       %d\n", iHiwtr);
    sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &iCur,&iHiwtr,0);
    printf("-- Lookaside OOM faults:        %d\n", iHiwtr);
    sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, 0);
    printf("-- Pager Heap Usage:            %d bytes\n", iCur);
    sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1);
    printf("-- Page cache hits:             %d\n", iCur);
    sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1);
    printf("-- Page cache misses:           %d\n", iCur); 
    sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_WRITE, &iCur, &iHiwtr, 1);
    printf("-- Page cache writes:           %d\n", iCur); 
    sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, 0);
    printf("-- Schema Heap Usage:           %d bytes\n", iCur); 
    sqlite3_db_status(db, SQLITE_DBSTATUS_STMT_USED, &iCur, &iHiwtr, 0);
    printf("-- Statement Heap Usage:        %d bytes\n", iCur); 
  }

  sqlite3_close(db);

  /* Global memory usage statistics printed after the database connection
  ** has closed.  Memory usage should be zero at this point. */
  if( showStats ){
    sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, 0);
    printf("-- Memory Used (bytes):         %d (max %d)\n", iCur,iHiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, 0);
    printf("-- Outstanding Allocations:     %d (max %d)\n", iCur,iHiwtr);
    sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &iCur, &iHiwtr, 0);
    printf("-- Pcache Overflow Bytes:       %d (max %d)\n", iCur,iHiwtr);
    sqlite3_status(SQLITE_STATUS_SCRATCH_OVERFLOW, &iCur, &iHiwtr, 0);
    printf("-- Scratch Overflow Bytes:      %d (max %d)\n", iCur,iHiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &iCur, &iHiwtr, 0);
    printf("-- Largest Allocation:          %d bytes\n",iHiwtr);
    sqlite3_status(SQLITE_STATUS_PAGECACHE_SIZE, &iCur, &iHiwtr, 0);
    printf("-- Largest Pcache Allocation:   %d bytes\n",iHiwtr);
    sqlite3_status(SQLITE_STATUS_SCRATCH_SIZE, &iCur, &iHiwtr, 0);
    printf("-- Largest Scratch Allocation:  %d bytes\n", iHiwtr);
  }
  return 0;
}