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f255336a | 1 | /* Monitoring file descriptor usage. |
04277e02 | 2 | Copyright (C) 2018-2019 Free Software Foundation, Inc. |
f255336a FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifndef SUPPORT_DESCRIPTORS_H | |
20 | #define SUPPORT_DESCRIPTORS_H | |
21 | ||
22 | #include <stdio.h> | |
23 | ||
24 | /* Opaque pointer, for capturing file descriptor lists. */ | |
25 | struct support_descriptors; | |
26 | ||
27 | /* Record the currently open file descriptors and store them in the | |
28 | returned list. Terminate the process if the listing operation | |
29 | fails. */ | |
30 | struct support_descriptors *support_descriptors_list (void); | |
31 | ||
32 | /* Deallocate the list of descriptors. */ | |
33 | void support_descriptors_free (struct support_descriptors *); | |
34 | ||
35 | /* Write the list of descriptors to STREAM, adding PREFIX to each | |
36 | line. */ | |
37 | void support_descriptors_dump (struct support_descriptors *, | |
38 | const char *prefix, FILE *stream); | |
39 | ||
40 | /* Check for file descriptor leaks and other file descriptor changes: | |
41 | Compare the current list of descriptors with the passed list. | |
42 | Record a test failure if there are additional open descriptors, | |
43 | descriptors have been closed, or if a change in file descriptor can | |
44 | be detected. */ | |
45 | void support_descriptors_check (struct support_descriptors *); | |
46 | ||
47 | #endif /* SUPPORT_DESCRIPTORS_H */ |