1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 * @brief APR Signal Handling
26 #include "apr_pools.h"
34 #endif /* __cplusplus */
37 * @defgroup apr_signal Signal Handling
42 #if APR_HAVE_SIGACTION || defined(DOXYGEN)
44 #if defined(DARWIN) && !defined(__cplusplus) && !defined(_ANSI_SOURCE)
45 /* work around Darwin header file bugs
46 * http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2657228.html
51 #define SIG_DFL (void (*)(int))0
52 #define SIG_IGN (void (*)(int))1
53 #define SIG_ERR (void (*)(int))-1
56 /** Function prototype for signal handlers */
57 typedef void apr_sigfunc_t(int);
60 * Set the signal handler function for a given signal
61 * @param signo The signal (eg... SIGWINCH)
62 * @param func the function to get called
64 APR_DECLARE(apr_sigfunc_t *) apr_signal(int signo, apr_sigfunc_t * func);
66 #if defined(SIG_IGN) && !defined(SIG_ERR)
67 #define SIG_ERR ((apr_sigfunc_t *) -1)
70 #else /* !APR_HAVE_SIGACTION */
71 #define apr_signal(a, b) signal(a, b)
76 * Get the description for a specific signal number
77 * @param signum The signal number
78 * @return The description of the signal
80 APR_DECLARE(const char *) apr_signal_description_get(int signum);
83 * APR-private function for initializing the signal package
85 * @param pglobal The internal, global pool
87 void apr_signal_init(apr_pool_t *pglobal);
90 * Block the delivery of a particular signal
91 * @param signum The signal number
94 APR_DECLARE(apr_status_t) apr_signal_block(int signum);
97 * Enable the delivery of a particular signal
98 * @param signum The signal number
101 APR_DECLARE(apr_status_t) apr_signal_unblock(int signum);
107 #endif /* __cplusplus */
109 #endif /* APR_SIGNAL_H */