tchmgr.c

高性能嵌入式数据库在高并发的环境下使用最好是64位系统比较好

  char *astr = NULL;
  char *fstr = NULL;
  int opts = UINT8_MAX;
  int omode = 0;
  for(int i = 2; i < argc; i++){
    if(!path && argv[i][0] == '-'){
      if(!strcmp(argv[i], "-tl")){
        if(opts == UINT8_MAX) opts = 0;
        opts |= HDBTLARGE;
      } else if(!strcmp(argv[i], "-td")){
        if(opts == UINT8_MAX) opts = 0;
        opts |= HDBTDEFLATE;
      } else if(!strcmp(argv[i], "-tb")){
        if(opts == UINT8_MAX) opts = 0;
        opts |= HDBTBZIP;
      } else if(!strcmp(argv[i], "-tt")){
        if(opts == UINT8_MAX) opts = 0;
        opts |= HDBTTCBS;
      } else if(!strcmp(argv[i], "-tx")){
        if(opts == UINT8_MAX) opts = 0;
        opts |= HDBTEXCODEC;
      } else if(!strcmp(argv[i], "-tz")){
        if(opts == UINT8_MAX) opts = 0;
      } else if(!strcmp(argv[i], "-nl")){
        omode |= HDBONOLCK;
      } else if(!strcmp(argv[i], "-nb")){
        omode |= HDBOLCKNB;
      } else {
        usage();
      }
    } else if(!path){
      path = argv[i];
    } else if(!bstr){
      bstr = argv[i];
    } else if(!astr){
      astr = argv[i];
    } else if(!fstr){
      fstr = argv[i];
    } else {
      usage();
    }
  }
  if(!path) usage();
  int bnum = bstr ? tcatoi(bstr) : -1;
  int apow = astr ? tcatoi(astr) : -1;
  int fpow = fstr ? tcatoi(fstr) : -1;
  int rv = procoptimize(path, bnum, apow, fpow, opts, omode);
  return rv;
}


/* parse arguments of importtsv command */
static int runimporttsv(int argc, char **argv){
  char *path = NULL;
  char *file = NULL;
  int omode = 0;
  bool sc = false;
  for(int i = 2; i < argc; i++){
    if(!path && argv[i][0] == '-'){
      if(!strcmp(argv[i], "-nl")){
        omode |= HDBONOLCK;
      } else if(!strcmp(argv[i], "-nb")){
        omode |= HDBOLCKNB;
      } else if(!strcmp(argv[i], "-sc")){
        sc = true;
      } else {
        usage();
      }
    } else if(!path){
      path = argv[i];
    } else if(!file){
      file = argv[i];
    } else {
      usage();
    }
  }
  if(!path) usage();
  int rv = procimporttsv(path, file, omode, sc);
  return rv;
}


/* parse arguments of version command */
static int runversion(int argc, char **argv){
  int rv = procversion();
  return rv;
}


/* perform create command */
static int proccreate(const char *path, int bnum, int apow, int fpow, int opts){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbtune(hdb, bnum, apow, fpow, opts)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  if(!tchdbopen(hdb, path, HDBOWRITER | HDBOCREAT | HDBOTRUNC)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  if(!tchdbclose(hdb)){
    printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform inform command */
static int procinform(const char *path, int omode){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL);
  if(!tchdbopen(hdb, path, HDBOREADER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  const char *npath = tchdbpath(hdb);
  if(!npath) npath = "(unknown)";
  printf("path: %s\n", npath);
  const char *type = "(unknown)";
  switch(tchdbtype(hdb)){
  case TCDBTHASH: type = "hash"; break;
  case TCDBTBTREE: type = "btree"; break;
  case TCDBTFIXED: type = "fixed"; break;
  }
  printf("database type: %s\n", type);
  uint8_t flags = tchdbflags(hdb);
  printf("additional flags:");
  if(flags & HDBFOPEN) printf(" open");
  if(flags & HDBFFATAL) printf(" fatal");
  printf("\n");
  printf("bucket number: %llu\n", (unsigned long long)tchdbbnum(hdb));
  if(hdb->cnt_writerec >= 0)
    printf("used bucket number: %lld\n", (long long)tchdbbnumused(hdb));
  printf("alignment: %u\n", tchdbalign(hdb));
  printf("free block pool: %u\n", tchdbfbpmax(hdb));
  printf("inode number: %lld\n", (long long)tchdbinode(hdb));
  char date[48];
  tcdatestrwww(tchdbmtime(hdb), INT_MAX, date);
  printf("modified time: %s\n", date);
  uint8_t opts = tchdbopts(hdb);
  printf("options:");
  if(opts & HDBTLARGE) printf(" large");
  if(opts & HDBTDEFLATE) printf(" deflate");
  if(opts & HDBTBZIP) printf(" bzip");
  if(opts & HDBTTCBS) printf(" tcbs");
  if(opts & HDBTEXCODEC) printf(" excodec");
  printf("\n");
  printf("record number: %llu\n", (unsigned long long)tchdbrnum(hdb));
  printf("file size: %llu\n", (unsigned long long)tchdbfsiz(hdb));
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform put command */
static int procput(const char *path, const char *kbuf, int ksiz, const char *vbuf, int vsiz,
                   int omode, int dmode){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOWRITER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  switch(dmode){
  case -1:
    if(!tchdbputkeep(hdb, kbuf, ksiz, vbuf, vsiz)){
      printerr(hdb);
      err = true;
    }
    break;
  case 1:
    if(!tchdbputcat(hdb, kbuf, ksiz, vbuf, vsiz)){
      printerr(hdb);
      err = true;
    }
    break;
  default:
    if(!tchdbput(hdb, kbuf, ksiz, vbuf, vsiz)){
      printerr(hdb);
      err = true;
    }
    break;
  }
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform out command */
static int procout(const char *path, const char *kbuf, int ksiz, int omode){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOWRITER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  if(!tchdbout(hdb, kbuf, ksiz)){
    printerr(hdb);
    err = true;
  }
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform get command */
static int procget(const char *path, const char *kbuf, int ksiz, int omode, bool px, bool pz){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOREADER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  int vsiz;
  char *vbuf = tchdbget(hdb, kbuf, ksiz, &vsiz);
  if(vbuf){
    printdata(vbuf, vsiz, px);
    if(!pz) putchar('\n');
    tcfree(vbuf);
  } else {
    printerr(hdb);
    err = true;
  }
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform list command */
static int proclist(const char *path, int omode, int max, bool pv, bool px, const char *fmstr){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOREADER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  if(fmstr){
    TCLIST *keys = tchdbfwmkeys2(hdb, fmstr, max);
    for(int i = 0; i < tclistnum(keys); i++){
      int ksiz;
      const char *kbuf = tclistval(keys, i, &ksiz);
      printdata(kbuf, ksiz, px);
      if(pv){
        int vsiz;
        char *vbuf = tchdbget(hdb, kbuf, ksiz, &vsiz);
        if(vbuf){
          putchar('\t');
          printdata(vbuf, vsiz, px);
          tcfree(vbuf);
        }
      }
      putchar('\n');
    }
    tclistdel(keys);
  } else {
    if(!tchdbiterinit(hdb)){
      printerr(hdb);
      err = true;
    }
    TCXSTR *key = tcxstrnew();
    TCXSTR *val = tcxstrnew();
    int cnt = 0;
    while(tchdbiternext3(hdb, key, val)){
      printdata(tcxstrptr(key), tcxstrsize(key), px);
      if(pv){
        putchar('\t');
        printdata(tcxstrptr(val), tcxstrsize(val), px);
      }
      putchar('\n');
      if(max >= 0 && ++cnt >= max) break;
    }
    tcxstrdel(val);
    tcxstrdel(key);
  }
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform optimize command */
static int procoptimize(const char *path, int bnum, int apow, int fpow, int opts, int omode){
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOWRITER | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    return 1;
  }
  bool err = false;
  if(!tchdboptimize(hdb, bnum, apow, fpow, opts)){
    printerr(hdb);
    err = true;
  }
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  return err ? 1 : 0;
}


/* perform importtsv command */
static int procimporttsv(const char *path, const char *file, int omode, bool sc){
  FILE *ifp = file ? fopen(file, "rb") : stdin;
  if(!ifp){
    fprintf(stderr, "%s: could not open\n", file ? file : "(stdin)");
    return 1;
  }
  TCHDB *hdb = tchdbnew();
  if(g_dbgfd >= 0) tchdbsetdbgfd(hdb, g_dbgfd);
  if(!tchdbsetcodecfunc(hdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(hdb);
  if(!tchdbopen(hdb, path, HDBOWRITER | HDBOCREAT | omode)){
    printerr(hdb);
    tchdbdel(hdb);
    if(ifp != stdin) fclose(ifp);
    return 1;
  }
  bool err = false;
  char *line;
  int cnt = 0;
  while(!err && (line = mygetline(ifp)) != NULL){
    char *pv = strchr(line, '\t');
    if(!pv){
      tcfree(line);
      continue;
    }
    *pv = '\0';
    if(sc) tcstrtolower(line);
    if(!tchdbput2(hdb, line, pv + 1)){
      printerr(hdb);
      err = true;
    }
    tcfree(line);
    if(cnt > 0 && cnt % 100 == 0){
      putchar('.');
      fflush(stdout);
      if(cnt % 5000 == 0) printf(" (%08d)\n", cnt);
    }
    cnt++;
  }
  printf(" (%08d)\n", cnt);
  if(!tchdbclose(hdb)){
    if(!err) printerr(hdb);
    err = true;
  }
  tchdbdel(hdb);
  if(ifp != stdin) fclose(ifp);
  return err ? 1 : 0;
}


/* perform version command */
static int procversion(void){
  printf("Tokyo Cabinet version %s (%d:%s)\n", tcversion, _TC_LIBVER, _TC_FORMATVER);
  printf("Copyright (C) 2006-2008 Mikio Hirabayashi\n");
  return 0;
}



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