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apr-1
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apr_signal.h
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/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef APR_SIGNAL_H #define APR_SIGNAL_H /** * @file apr_signal.h * @brief APR Signal Handling */ #include "apr.h" #include "apr_pools.h" #if APR_HAVE_SIGNAL_H #include <signal.h> #endif #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ /** * @defgroup apr_signal Signal Handling * @ingroup APR * @{ */ #if APR_HAVE_SIGACTION || defined(DOXYGEN) #if defined(DARWIN) && !defined(__cplusplus) && !defined(_ANSI_SOURCE) /* work around Darwin header file bugs * http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2657228.html */ #undef SIG_DFL #undef SIG_IGN #undef SIG_ERR #define SIG_DFL (void (*)(int))0 #define SIG_IGN (void (*)(int))1 #define SIG_ERR (void (*)(int))-1 #endif /** Function prototype for signal handlers */ typedef void apr_sigfunc_t(int); /** * Set the signal handler function for a given signal * @param signo The signal (eg... SIGWINCH) * @param func the function to get called */ APR_DECLARE(apr_sigfunc_t *) apr_signal(int signo, apr_sigfunc_t * func); #if defined(SIG_IGN) && !defined(SIG_ERR) #define SIG_ERR ((apr_sigfunc_t *) -1) #endif #else /* !APR_HAVE_SIGACTION */ #define apr_signal(a, b) signal(a, b) #endif /** * Get the description for a specific signal number * @param signum The signal number * @return The description of the signal */ APR_DECLARE(const char *) apr_signal_description_get(int signum); /** * APR-private function for initializing the signal package * @internal * @param pglobal The internal, global pool */ void apr_signal_init(apr_pool_t *pglobal); /** * Block the delivery of a particular signal * @param signum The signal number * @return status */ APR_DECLARE(apr_status_t) apr_signal_block(int signum); /** * Enable the delivery of a particular signal * @param signum The signal number * @return status */ APR_DECLARE(apr_status_t) apr_signal_unblock(int signum); /** @} */ #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* APR_SIGNAL_H */