diff options
Diffstat (limited to 'include/ap_config.h')
| -rw-r--r-- | include/ap_config.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/include/ap_config.h b/include/ap_config.h new file mode 100644 index 0000000..944b16a --- /dev/null +++ b/include/ap_config.h @@ -0,0 +1,206 @@ +/* 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 */ |