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author | Florian Weimer <fweimer@redhat.com> | 2018-12-06 15:39:42 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2018-12-06 15:39:42 +0100 |
commit | f255336a9301619519045548acb2e1027065a837 (patch) | |
tree | 7b0774eba027b876db3c6242c5ac5a3f92f357b4 /support/descriptors.h | |
parent | 35caceb145ff23340edcd67dd813bfd95f1ff6e6 (diff) | |
download | glibc-f255336a9301619519045548acb2e1027065a837.tar.gz glibc-f255336a9301619519045548acb2e1027065a837.tar.xz glibc-f255336a9301619519045548acb2e1027065a837.zip |
support: Implement <support/descriptors.h> to track file descriptors
Diffstat (limited to 'support/descriptors.h')
-rw-r--r-- | support/descriptors.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/support/descriptors.h b/support/descriptors.h new file mode 100644 index 0000000000..8ec4cbbdfb --- /dev/null +++ b/support/descriptors.h @@ -0,0 +1,47 @@ +/* Monitoring file descriptor usage. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef SUPPORT_DESCRIPTORS_H +#define SUPPORT_DESCRIPTORS_H + +#include <stdio.h> + +/* Opaque pointer, for capturing file descriptor lists. */ +struct support_descriptors; + +/* Record the currently open file descriptors and store them in the + returned list. Terminate the process if the listing operation + fails. */ +struct support_descriptors *support_descriptors_list (void); + +/* Deallocate the list of descriptors. */ +void support_descriptors_free (struct support_descriptors *); + +/* Write the list of descriptors to STREAM, adding PREFIX to each + line. */ +void support_descriptors_dump (struct support_descriptors *, + const char *prefix, FILE *stream); + +/* Check for file descriptor leaks and other file descriptor changes: + Compare the current list of descriptors with the passed list. + Record a test failure if there are additional open descriptors, + descriptors have been closed, or if a change in file descriptor can + be detected. */ +void support_descriptors_check (struct support_descriptors *); + +#endif /* SUPPORT_DESCRIPTORS_H */ |