src/shared/fdset.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5
   6 #include "hashmap.h"
   7 #include "macro.h"
   8 #include "set.h"
   9
  10 typedef struct FDSet FDSet;
  11
  12 FDSet* fdset_new(void);
  13 FDSet* fdset_free(FDSet *s);
  14
  15 int fdset_put(FDSet *s, int fd);
  16 int fdset_consume(FDSet *s, int fd);
  17 int fdset_put_dup(FDSet *s, int fd);
  18
  19 bool fdset_contains(FDSet *s, int fd);
  20 int fdset_remove(FDSet *s, int fd);
  21
  22 int fdset_new_array(FDSet **ret, const int *fds, size_t n_fds);
  23 int fdset_new_fill(int filter_cloexec, FDSet **ret);
  24 int fdset_new_listen_fds(FDSet **ret, bool unset);
  25
  26 int fdset_cloexec(FDSet *fds, bool b);
  27
  28 int fdset_to_array(FDSet *fds, int **ret);
  29
  30 int fdset_close_others(FDSet *fds);
  31
  32 unsigned fdset_size(FDSet *fds);
  33 bool fdset_isempty(FDSet *fds);
  34
  35 int fdset_iterate(FDSet *s, Iterator *i);
  36
  37 int fdset_steal_first(FDSet *fds);
  38
  39 void fdset_close(FDSet *fds);
  40
  41 #define _FDSET_FOREACH(fd, fds, i) \
  42         for (Iterator i = ITERATOR_FIRST; ((fd) = fdset_iterate((fds), &i)) >= 0; )
  43 #define FDSET_FOREACH(fd, fds) \
  44         _FDSET_FOREACH(fd, fds, UNIQ_T(i, UNIQ))
  45
  46 DEFINE_TRIVIAL_CLEANUP_FUNC(FDSet*, fdset_free);
  47 #define _cleanup_fdset_free_ _cleanup_(fdset_freep)