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59 #include "apr_hooks.h"
60 #include "apr_optional_hooks.h"
64 * @brief Symbol Export Macros
67 /* Although this file doesn't declare any hooks, declare the hook group here */
68 /** @defgroup hooks Apache Hooks */
71 * AP_DECLARE_EXPORT is defined when building the Apache Core dynamic
72 * library, so that all public symbols are exported.
74 * AP_DECLARE_STATIC is defined when including Apache's Core headers,
75 * to provide static linkage when the dynamic library may be unavailable.
77 * AP_DECLARE_STATIC and AP_DECLARE_EXPORT are left undefined when
78 * including Apache's Core headers, to import and link the symbols from the
79 * dynamic Apache Core library and assure appropriate indirection and calling
80 * conventions at compile time.
82 * @deffunc AP_DECLARE_EXPORT/AP_DECLARE_STATIC
87 * Apache Core dso functions are declared with AP_DECLARE(), so they may
88 * use the most appropriate calling convention. Hook functions and other
89 * Core functions with variable arguments must use AP_DECLARE_NONSTD().
91 * @deffunc AP_DECLARE(rettype) ap_func(args)
93 #define AP_DECLARE(type) type
96 * Apache Core dso variable argument and hook functions are declared with
97 * AP_DECLARE_NONSTD(), as they must use the C language calling convention.
99 * @deffunc AP_DECLARE_NONSTD(rettype) ap_func(args [...])
101 #define AP_DECLARE_NONSTD(type) type
104 * Apache Core dso variables are declared with AP_MODULE_DECLARE_DATA.
105 * This assures the appropriate indirection is invoked at compile time.
107 * @tip extern AP_DECLARE_DATA type apr_variable; syntax is required for
108 * declarations within headers to properly import the variable.
109 * @deffunc AP_DECLARE_DATA type apr_variable
111 #define AP_DECLARE_DATA
113 #elif defined(AP_DECLARE_STATIC)
114 #define AP_DECLARE(type) type __stdcall
115 #define AP_DECLARE_NONSTD(type) type
116 #define AP_DECLARE_DATA
117 #elif defined(AP_DECLARE_EXPORT)
118 #define AP_DECLARE(type) __declspec(dllexport) type __stdcall
119 #define AP_DECLARE_NONSTD(type) __declspec(dllexport) type
120 #define AP_DECLARE_DATA __declspec(dllexport)
122 #define AP_DECLARE(type) __declspec(dllimport) type __stdcall
123 #define AP_DECLARE_NONSTD(type) __declspec(dllimport) type
124 #define AP_DECLARE_DATA __declspec(dllimport)
127 #if !defined(WIN32) || defined(AP_MODULE_DECLARE_STATIC)
129 * Declare a dso module's exported module structure as AP_MODULE_DECLARE_DATA.
131 * Unless AP_MODULE_DECLARE_STATIC is defined at compile time, symbols
132 * declared with AP_MODULE_DECLARE_DATA are always exported.
134 * @deffunc module AP_MODULE_DECLARE_DATA mod_tag
137 #define AP_MODULE_DECLARE(type) type __stdcall
139 #define AP_MODULE_DECLARE(type) type
141 #define AP_MODULE_DECLARE_NONSTD(type) type
142 #define AP_MODULE_DECLARE_DATA
145 * AP_MODULE_DECLARE_EXPORT is a no-op. Unless contradicted by the
146 * AP_MODULE_DECLARE_STATIC compile-time symbol, it is assumed and defined.
148 * The old SHARED_MODULE compile-time symbol is now the default behavior,
149 * so it is no longer referenced anywhere with Apache 2.0.
151 * @deffunc AP_MODULE_DECLARE_EXPORT
153 #define AP_MODULE_DECLARE_EXPORT
154 #define AP_MODULE_DECLARE(type) __declspec(dllexport) type __stdcall
155 #define AP_MODULE_DECLARE_NONSTD(type) __declspec(dllexport) type
156 #define AP_MODULE_DECLARE_DATA __declspec(dllexport)
160 * @package Hook Functions
163 #define AP_DECLARE_HOOK(ret,name,args) \
164 APR_DECLARE_EXTERNAL_HOOK(ap,AP,ret,name,args)
166 #define AP_IMPLEMENT_HOOK_BASE(name) \
167 APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ap,AP,name)
170 * Implement an Apache core hook that has no return code, and
171 * therefore runs all of the registered functions. The implementation
172 * is called ap_run_<I>name</I>.
174 * @param name The name of the hook
175 * @param args_decl The declaration of the arguments for the hook, for example
177 * @param args_use The arguments for the hook as used in a call, for example
179 * @tip If IMPLEMENTing a hook that is not linked into the Apache core,
180 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_VOID.
181 * @deffunc AP_IMPLEMENT_HOOK_VOID(name, args_decl, args_use)
183 #define AP_IMPLEMENT_HOOK_VOID(name,args_decl,args_use) \
184 APR_IMPLEMENT_EXTERNAL_HOOK_VOID(ap,AP,name,args_decl,args_use)
187 * Implement an Apache core hook that runs until one of the functions
188 * returns something other than ok or decline. That return value is
189 * then returned from the hook runner. If the hooks run to completion,
190 * then ok is returned. Note that if no hook runs it would probably be
191 * more correct to return decline, but this currently does not do
192 * so. The implementation is called ap_run_<I>name</I>.
194 * @param ret The return type of the hook (and the hook runner)
195 * @param name The name of the hook
196 * @param args_decl The declaration of the arguments for the hook, for example
198 * @param args_use The arguments for the hook as used in a call, for example
200 * @param ok The "ok" return value
201 * @param decline The "decline" return value
202 * @return ok, decline or an error.
203 * @tip If IMPLEMENTing a hook that is not linked into the Apache core,
204 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL.
205 * @deffunc AP_IMPLEMENT_HOOK_RUN_ALL(ret, name, args_decl, args_use, ok, decline)
207 #define AP_IMPLEMENT_HOOK_RUN_ALL(ret,name,args_decl,args_use,ok,decline) \
208 APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL(ap,AP,ret,name,args_decl, \
212 * Implement a hook that runs until the first function that returns
213 * something other than decline. If all functions return decline, the
214 * hook runner returns decline. The implementation is called
215 * ap_run_<I>name</I>.
217 * @param ret The return type of the hook (and the hook runner)
218 * @param name The name of the hook
219 * @param args_decl The declaration of the arguments for the hook, for example
221 * @param args_use The arguments for the hook as used in a call, for example
223 * @param decline The "decline" return value
224 * @return decline or an error.
225 * @tip If IMPLEMENTing a hook that is not linked into the Apache core
226 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST.
227 * @deffunc AP_IMPLEMENT_HOOK_RUN_FIRST(ret, name, args_decl, args_use, decline)
229 #define AP_IMPLEMENT_HOOK_RUN_FIRST(ret,name,args_decl,args_use,decline) \
230 APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ap,AP,ret,name,args_decl, \
233 /* Note that the other optional hook implementations are straightforward but
234 * have not yet been needed
238 * Implement an optional hook. This is exactly the same as a standard hook
239 * implementation, except the hook is optional.
240 * @see AP_IMPLEMENT_HOOK_RUN_ALL
242 #define AP_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ret,name,args_decl,args_use,ok, \
244 APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ap,AP,ret,name,args_decl, \
248 * Hook an optional hook. Unlike static hooks, this uses a macro instead of a
251 #define AP_OPTIONAL_HOOK(name,fn,pre,succ,order) \
252 APR_OPTIONAL_HOOK(ap,name,fn,pre,succ,order)
256 #include "ap_config_auto.h"
260 /* TODO - We need to put OS detection back to make all the following work */
262 #if defined(SUNOS4) || defined(IRIX) || defined(NEXT) || defined(AUX3) \
263 || defined (UW) || defined(LYNXOS) || defined(TPF)
264 /* These systems don't do well with any lingering close code; I don't know
269 /* If APR has OTHER_CHILD logic, use reliable piped logs. */
270 #if APR_HAS_OTHER_CHILD
271 #define AP_HAVE_RELIABLE_PIPED_LOGS TRUE
274 #if APR_CHARSET_EBCDIC && !defined(APACHE_XLATE)
278 #endif /* AP_CONFIG_H */