src/fd-cache/fd-cache.h

   1 #ifndef BABELTRACE_FD_CACHE_INTERNAL_H
   2 #define BABELTRACE_FD_CACHE_INTERNAL_H
   3 /*
   4  * fd-cache.h
   5  *
   6  * Babeltrace - File descriptor cache
   7  *
   8  * Copyright 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
   9  *
  10  * Author: Francis Deslauriers <francis.deslauriers@efficios.com>
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a copy
  13  * of this software and associated documentation files (the "Software"), to deal
  14  * in the Software without restriction, including without limitation the rights
  15  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  16  * copies of the Software, and to permit persons to whom the Software is
  17  * furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included in
  20  * all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  25  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  26  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  27  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  28  * SOFTWARE.
  29  */
  30
  31 #include "common/macros.h"
  32
  33 struct bt_fd_cache_handle {
  34         int fd;
  35 };
  36
  37 struct bt_fd_cache {
  38         GHashTable *cache;
  39 };
  40
  41 static inline
  42 int bt_fd_cache_handle_get_fd(struct bt_fd_cache_handle *handle)
  43 {
  44         return handle->fd;
  45 }
  46
  47 BT_HIDDEN
  48 int bt_fd_cache_init(struct bt_fd_cache *fdc);
  49
  50 BT_HIDDEN
  51 void bt_fd_cache_fini(struct bt_fd_cache *fdc);
  52
  53 BT_HIDDEN
  54 struct bt_fd_cache_handle *bt_fd_cache_get_handle(struct bt_fd_cache *fdc,
  55                 const char *path);
  56
  57 BT_HIDDEN
  58 void bt_fd_cache_put_handle(struct bt_fd_cache *fdc,
  59                 struct bt_fd_cache_handle *handle);
  60
  61 #endif /* BABELTRACE_FD_CACHE_INTERNAL_H */