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author | Holger Weiss <holger@zedat.fu-berlin.de> | 2013-08-19 23:27:12 +0200 |
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committer | Holger Weiss <holger@zedat.fu-berlin.de> | 2013-08-19 23:27:12 +0200 |
commit | 26fbe7f1e68bb0c96da32491efcf3696fe6c299b (patch) | |
tree | c4d95289187a64e9c7517bf73d8208026c3d2fb3 /gl/close-hook.c | |
parent | 5f79e3e9f62ca5487d9881973149136ba1d19d3e (diff) | |
download | monitoring-plugins-26fbe7f1e68bb0c96da32491efcf3696fe6c299b.tar.gz |
Sync with the latest Gnulib code (6f2d632)
Diffstat (limited to 'gl/close-hook.c')
-rw-r--r-- | gl/close-hook.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/gl/close-hook.c b/gl/close-hook.c deleted file mode 100644 index 0253c4dc..00000000 --- a/gl/close-hook.c +++ /dev/null | |||
@@ -1,91 +0,0 @@ | |||
1 | /* Hook for making the close() function extensible. | ||
2 | Copyright (C) 2009, 2010 Free Software Foundation, Inc. | ||
3 | Written by Bruno Haible <bruno@clisp.org>, 2009. | ||
4 | |||
5 | This program is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3 of the License, or | ||
8 | (at your option) any later version. | ||
9 | |||
10 | This program 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 General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
17 | |||
18 | #include <config.h> | ||
19 | |||
20 | /* Specification. */ | ||
21 | #include "close-hook.h" | ||
22 | |||
23 | #include <stdlib.h> | ||
24 | #include <unistd.h> | ||
25 | |||
26 | #undef close | ||
27 | |||
28 | |||
29 | /* Currently, this entire code is only needed for the handling of sockets | ||
30 | on native Windows platforms. */ | ||
31 | #if WINDOWS_SOCKETS | ||
32 | |||
33 | /* The first and last link in the doubly linked list. | ||
34 | Initially the list is empty. */ | ||
35 | static struct close_hook anchor = { &anchor, &anchor, NULL }; | ||
36 | |||
37 | int | ||
38 | execute_close_hooks (int fd, const struct close_hook *remaining_list) | ||
39 | { | ||
40 | if (remaining_list == &anchor) | ||
41 | /* End of list reached. */ | ||
42 | return close (fd); | ||
43 | else | ||
44 | return remaining_list->private_fn (fd, remaining_list->private_next); | ||
45 | } | ||
46 | |||
47 | int | ||
48 | execute_all_close_hooks (int fd) | ||
49 | { | ||
50 | return execute_close_hooks (fd, anchor.private_next); | ||
51 | } | ||
52 | |||
53 | void | ||
54 | register_close_hook (close_hook_fn hook, struct close_hook *link) | ||
55 | { | ||
56 | if (link->private_next == NULL && link->private_prev == NULL) | ||
57 | { | ||
58 | /* Add the link to the doubly linked list. */ | ||
59 | link->private_next = anchor.private_next; | ||
60 | link->private_prev = &anchor; | ||
61 | link->private_fn = hook; | ||
62 | anchor.private_next->private_prev = link; | ||
63 | anchor.private_next = link; | ||
64 | } | ||
65 | else | ||
66 | { | ||
67 | /* The link is already in use. */ | ||
68 | if (link->private_fn != hook) | ||
69 | abort (); | ||
70 | } | ||
71 | } | ||
72 | |||
73 | void | ||
74 | unregister_close_hook (struct close_hook *link) | ||
75 | { | ||
76 | struct close_hook *next = link->private_next; | ||
77 | struct close_hook *prev = link->private_prev; | ||
78 | |||
79 | if (next != NULL && prev != NULL) | ||
80 | { | ||
81 | /* The link is in use. Remove it from the doubly linked list. */ | ||
82 | prev->private_next = next; | ||
83 | next->private_prev = prev; | ||
84 | /* Clear the link, to mark it unused. */ | ||
85 | link->private_next = NULL; | ||
86 | link->private_prev = NULL; | ||
87 | link->private_fn = NULL; | ||
88 | } | ||
89 | } | ||
90 | |||
91 | #endif | ||