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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2011 New Dream Network | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef CEPH_GLOBAL_SIGNAL_HANDLER_H | |
16 | #define CEPH_GLOBAL_SIGNAL_HANDLER_H | |
17 | ||
18 | #include <signal.h> | |
19 | #include "acconfig.h" | |
20 | ||
21 | typedef void (*signal_handler_t)(int); | |
22 | ||
adb31ebb TL |
23 | #ifdef HAVE_SIGDESCR_NP |
24 | # define sig_str(signum) sigdescr_np(signum) | |
25 | #elif HAVE_REENTRANT_STRSIGNAL | |
7c673cae | 26 | # define sig_str(signum) strsignal(signum) |
adb31ebb TL |
27 | #else |
28 | # define sig_str(signum) sys_siglist[signum] | |
7c673cae FG |
29 | #endif |
30 | ||
31 | void install_sighandler(int signum, signal_handler_t handler, int flags); | |
32 | ||
33 | // handles SIGHUP | |
34 | void sighup_handler(int signum); | |
35 | ||
36 | // Install the standard Ceph signal handlers | |
37 | void install_standard_sighandlers(void); | |
38 | ||
39 | ||
40 | /// initialize async signal handler framework | |
41 | void init_async_signal_handler(); | |
42 | ||
43 | /// shutdown async signal handler framework | |
44 | void shutdown_async_signal_handler(); | |
45 | ||
46 | /// queue an async signal | |
47 | void queue_async_signal(int signum); | |
48 | ||
49 | /// install a safe, async, callback for the given signal | |
50 | void register_async_signal_handler(int signum, signal_handler_t handler); | |
51 | void register_async_signal_handler_oneshot(int signum, signal_handler_t handler); | |
52 | ||
53 | /// uninstall a safe async signal callback | |
54 | void unregister_async_signal_handler(int signum, signal_handler_t handler); | |
55 | ||
56 | #endif |