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include
apr_optional_hooks.h
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/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef APR_OPTIONAL_HOOK_H
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#define APR_OPTIONAL_HOOK_H
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#include "apr_tables.h"
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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APU_DECLARE(
void
)
apr_optional_hook_add
(const
char
*szName,
void
(*pfn)(
void
),
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const
char
* const *aszPre,
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const
char
* const *aszSucc,
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int
nOrder);
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#define APR_OPTIONAL_HOOK(ns,name,pfn,aszPre,aszSucc,nOrder) do { \
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ns##_HOOK_##name##_t *apu__hook = pfn; \
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apr_optional_hook_add(#name,(void (*)(void))apu__hook,aszPre, aszSucc, nOrder); \
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} while (0)
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APU_DECLARE(apr_array_header_t *) apr_optional_hook_get(const
char
*szName);
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#define APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ns,link,ret,name,args_decl,args_use,ok,decline) \
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link##_DECLARE(ret) ns##_run_##name args_decl \
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{ \
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ns##_LINK_##name##_t *pHook; \
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int n; \
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ret rv; \
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apr_array_header_t *pHookArray=apr_optional_hook_get(#name); \
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\
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if(!pHookArray) \
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return ok; \
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\
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pHook=(ns##_LINK_##name##_t *)pHookArray->elts; \
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for(n=0 ; n < pHookArray->nelts ; ++n) \
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{ \
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rv=(pHook[n].pFunc)args_use; \
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\
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if(rv != ok && rv != decline) \
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return rv; \
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} \
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return ok; \
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
/* APR_OPTIONAL_HOOK_H */
apr_optional_hook_add
void apr_optional_hook_add(const char *szName, void(*pfn)(void), const char *const *aszPre, const char *const *aszSucc, int nOrder)
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