00001 /* Licensed to the Apache Software Foundation (ASF) under one or more 00002 * contributor license agreements. See the NOTICE file distributed with 00003 * this work for additional information regarding copyright ownership. 00004 * The ASF licenses this file to You under the Apache License, Version 2.0 00005 * (the "License"); you may not use this file except in compliance with 00006 * the License. You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00017 #ifndef APR_SIGNAL_H 00018 #define APR_SIGNAL_H 00019 00020 /** 00021 * @file apr_signal.h 00022 * @brief APR Signal Handling 00023 */ 00024 00025 #include "apr.h" 00026 #include "apr_pools.h" 00027 00028 #if APR_HAVE_SIGNAL_H 00029 #include <signal.h> 00030 #endif 00031 00032 #ifdef __cplusplus 00033 extern "C" { 00034 #endif /* __cplusplus */ 00035 00036 /** 00037 * @defgroup apr_signal Signal Handling 00038 * @ingroup APR 00039 * @{ 00040 */ 00041 00042 #if APR_HAVE_SIGACTION || defined(DOXYGEN) 00043 00044 #if defined(DARWIN) && !defined(__cplusplus) && !defined(_ANSI_SOURCE) 00045 /* work around Darwin header file bugs 00046 * http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2657228.html 00047 */ 00048 #undef SIG_DFL 00049 #undef SIG_IGN 00050 #undef SIG_ERR 00051 #define SIG_DFL (void (*)(int))0 00052 #define SIG_IGN (void (*)(int))1 00053 #define SIG_ERR (void (*)(int))-1 00054 #endif 00055 00056 /** Function prototype for signal handlers */ 00057 typedef void apr_sigfunc_t(int); 00058 00059 /** 00060 * Set the signal handler function for a given signal 00061 * @param signo The signal (eg... SIGWINCH) 00062 * @param func the function to get called 00063 */ 00064 APR_DECLARE(apr_sigfunc_t *) apr_signal(int signo, apr_sigfunc_t * func); 00065 00066 #if defined(SIG_IGN) && !defined(SIG_ERR) 00067 #define SIG_ERR ((apr_sigfunc_t *) -1) 00068 #endif 00069 00070 #else /* !APR_HAVE_SIGACTION */ 00071 #define apr_signal(a, b) signal(a, b) 00072 #endif 00073 00074 00075 /** 00076 * Get the description for a specific signal number 00077 * @param signum The signal number 00078 * @return The description of the signal 00079 */ 00080 APR_DECLARE(const char *) apr_signal_description_get(int signum); 00081 00082 /** 00083 * APR-private function for initializing the signal package 00084 * @internal 00085 * @param pglobal The internal, global pool 00086 */ 00087 void apr_signal_init(apr_pool_t *pglobal); 00088 00089 /** 00090 * Block the delivery of a particular signal 00091 * @param signum The signal number 00092 * @return status 00093 */ 00094 APR_DECLARE(apr_status_t) apr_signal_block(int signum); 00095 00096 /** 00097 * Enable the delivery of a particular signal 00098 * @param signum The signal number 00099 * @return status 00100 */ 00101 APR_DECLARE(apr_status_t) apr_signal_unblock(int signum); 00102 00103 /** @} */ 00104 00105 #ifdef __cplusplus 00106 } 00107 #endif /* __cplusplus */ 00108 00109 #endif /* APR_SIGNAL_H */
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