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ap_config.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. */ /** * @file ap_config.h * @brief Symbol export macros and hook functions */ #ifndef AP_CONFIG_H #define AP_CONFIG_H #include "ap_hooks.h" /* Although this file doesn't declare any hooks, declare the exports group here */ /** * @defgroup exports Apache exports * @ingroup APACHE_CORE */ #ifdef DOXYGEN /* define these just so doxygen documents them */ /** * AP_DECLARE_STATIC is defined when including Apache's Core headers, * to provide static linkage when the dynamic library may be unavailable. * * @see AP_DECLARE_EXPORT * * AP_DECLARE_STATIC and AP_DECLARE_EXPORT are left undefined when * including Apache's Core headers, to import and link the symbols from the * dynamic Apache Core library and assure appropriate indirection and calling * conventions at compile time. */ # define AP_DECLARE_STATIC /** * AP_DECLARE_EXPORT is defined when building the Apache Core dynamic * library, so that all public symbols are exported. * * @see AP_DECLARE_STATIC */ # define AP_DECLARE_EXPORT #endif /* def DOXYGEN */ #if !defined(WIN32) /** * Apache Core dso functions are declared with AP_DECLARE(), so they may * use the most appropriate calling convention. Hook functions and other * Core functions with variable arguments must use AP_DECLARE_NONSTD(). * @code * AP_DECLARE(rettype) ap_func(args) * @endcode */ #define AP_DECLARE(type) type /** * Apache Core dso variable argument and hook functions are declared with * AP_DECLARE_NONSTD(), as they must use the C language calling convention. * @see AP_DECLARE * @code * AP_DECLARE_NONSTD(rettype) ap_func(args [...]) * @endcode */ #define AP_DECLARE_NONSTD(type) type /** * Apache Core dso variables are declared with AP_MODULE_DECLARE_DATA. * This assures the appropriate indirection is invoked at compile time. * * @note AP_DECLARE_DATA extern type apr_variable; syntax is required for * declarations within headers to properly import the variable. * @code * AP_DECLARE_DATA type apr_variable * @endcode */ #define AP_DECLARE_DATA #elif defined(AP_DECLARE_STATIC) #define AP_DECLARE(type) type __stdcall #define AP_DECLARE_NONSTD(type) type #define AP_DECLARE_DATA #elif defined(AP_DECLARE_EXPORT) #define AP_DECLARE(type) __declspec(dllexport) type __stdcall #define AP_DECLARE_NONSTD(type) __declspec(dllexport) type #define AP_DECLARE_DATA __declspec(dllexport) #else #define AP_DECLARE(type) __declspec(dllimport) type __stdcall #define AP_DECLARE_NONSTD(type) __declspec(dllimport) type #define AP_DECLARE_DATA __declspec(dllimport) #endif #if !defined(WIN32) || defined(AP_MODULE_DECLARE_STATIC) /** * Declare a dso module's exported module structure as AP_MODULE_DECLARE_DATA. * * Unless AP_MODULE_DECLARE_STATIC is defined at compile time, symbols * declared with AP_MODULE_DECLARE_DATA are always exported. * @code * module AP_MODULE_DECLARE_DATA mod_tag * @endcode */ #if defined(WIN32) #define AP_MODULE_DECLARE(type) type __stdcall #else #define AP_MODULE_DECLARE(type) type #endif #define AP_MODULE_DECLARE_NONSTD(type) type #define AP_MODULE_DECLARE_DATA #else /** * AP_MODULE_DECLARE_EXPORT is a no-op. Unless contradicted by the * AP_MODULE_DECLARE_STATIC compile-time symbol, it is assumed and defined. * * The old SHARED_MODULE compile-time symbol is now the default behavior, * so it is no longer referenced anywhere with Apache 2.0. */ #define AP_MODULE_DECLARE_EXPORT #define AP_MODULE_DECLARE(type) __declspec(dllexport) type __stdcall #define AP_MODULE_DECLARE_NONSTD(type) __declspec(dllexport) type #define AP_MODULE_DECLARE_DATA __declspec(dllexport) #endif #include "os.h" #if (!defined(WIN32) && !defined(NETWARE)) || defined(__MINGW32__) #include "ap_config_auto.h" #endif #include "ap_config_layout.h" /* Where the main/parent process's pid is logged */ #ifndef DEFAULT_PIDLOG #define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid" #endif #if defined(NETWARE) #define AP_NONBLOCK_WHEN_MULTI_LISTEN 1 #endif #if defined(AP_ENABLE_DTRACE) && HAVE_SYS_SDT_H #include <sys/sdt.h> #else #undef _DTRACE_VERSION #endif #ifdef _DTRACE_VERSION #include "apache_probes.h" #else #include "apache_noprobes.h" #endif /* If APR has OTHER_CHILD logic, use reliable piped logs. */ #if APR_HAS_OTHER_CHILD #define AP_HAVE_RELIABLE_PIPED_LOGS TRUE #endif #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L #define AP_HAVE_C99 #endif /* Presume that the compiler supports C99-style designated * initializers if using GCC (but not G++), or for any other compiler * which claims C99 support. */ #if (defined(__GNUC__) && !defined(__cplusplus)) || defined(AP_HAVE_C99) #define AP_HAVE_DESIGNATED_INITIALIZER #endif #ifndef __has_attribute /* check for supported attributes on clang */ #define __has_attribute(x) 0 #endif #if (defined(__GNUC__) && __GNUC__ >= 4) || __has_attribute(sentinel) #define AP_FN_ATTR_SENTINEL __attribute__((sentinel)) #else #define AP_FN_ATTR_SENTINEL #endif #if ( defined(__GNUC__) && \ (__GNUC__ >= 4 || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 4))) \ || __has_attribute(warn_unused_result) #define AP_FN_ATTR_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) #else #define AP_FN_ATTR_WARN_UNUSED_RESULT #endif #if ( defined(__GNUC__) && \ (__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)) \ || __has_attribute(alloc_size) #define AP_FN_ATTR_ALLOC_SIZE(x) __attribute__((alloc_size(x))) #define AP_FN_ATTR_ALLOC_SIZE2(x,y) __attribute__((alloc_size(x,y))) #else #define AP_FN_ATTR_ALLOC_SIZE(x) #define AP_FN_ATTR_ALLOC_SIZE2(x,y) #endif #endif /* AP_CONFIG_H */