src/shared/fdset.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <stdbool.h>
   9
  10 #include "hashmap.h"
  11 #include "macro.h"
  12 #include "set.h"
  13
  14 typedef struct FDSet FDSet;
  15
  16 FDSet* fdset_new(void);
  17 FDSet* fdset_free(FDSet *s);
  18
  19 int fdset_put(FDSet *s, int fd);
  20 int fdset_put_dup(FDSet *s, int fd);
  21
  22 bool fdset_contains(FDSet *s, int fd);
  23 int fdset_remove(FDSet *s, int fd);
  24
  25 int fdset_new_array(FDSet **ret, const int *fds, size_t n_fds);
  26 int fdset_new_fill(FDSet **ret);
  27 int fdset_new_listen_fds(FDSet **ret, bool unset);
  28
  29 int fdset_cloexec(FDSet *fds, bool b);
  30
  31 int fdset_close_others(FDSet *fds);
  32
  33 unsigned fdset_size(FDSet *fds);
  34 bool fdset_isempty(FDSet *fds);
  35
  36 int fdset_iterate(FDSet *s, Iterator *i);
  37
  38 int fdset_steal_first(FDSet *fds);
  39
  40 #define FDSET_FOREACH(fd, fds, i) \
  41         for ((i) = ITERATOR_FIRST, (fd) = fdset_iterate((fds), &(i)); (fd) >= 0; (fd) = fdset_iterate((fds), &(i)))
  42
  43 DEFINE_TRIVIAL_CLEANUP_FUNC(FDSet*, fdset_free);
  44 #define _cleanup_fdset_free_ _cleanup_(fdset_freep)