include/apr_hooks.h
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#ifndef APR_HOOKS_H
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#define APR_HOOKS_H
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#include "apu.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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00038 #define APR_IMPLEMENT_HOOK_GET_PROTO(ns,link,name) \
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link##_DECLARE(apr_array_header_t *) ns##_hook_get_##name(void)
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00042 #define APR_DECLARE_EXTERNAL_HOOK(ns,link,ret,name,args) \
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typedef ret ns##_HOOK_##name##_t args; \
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link##_DECLARE(void) ns##_hook_##name(ns##_HOOK_##name##_t *pf, \
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const char * const *aszPre, \
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const char * const *aszSucc, int nOrder); \
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link##_DECLARE(ret) ns##_run_##name args; \
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APR_IMPLEMENT_HOOK_GET_PROTO(ns,link,name); \
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typedef struct ns##_LINK_##name##_t \
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{ \
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ns##_HOOK_##name##_t *pFunc; \
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const char *szName; \
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const char * const *aszPredecessors; \
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const char * const *aszSuccessors; \
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int nOrder; \
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} ns##_LINK_##name##_t;
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00059 #define APR_HOOK_STRUCT(members) \
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static struct { members } _hooks;
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00063 #define APR_HOOK_LINK(name) \
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apr_array_header_t *link_##name;
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00067 #define APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ns,link,name) \
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link##_DECLARE(void) ns##_hook_##name(ns##_HOOK_##name##_t *pf,const char * const *aszPre, \
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const char * const *aszSucc,int nOrder) \
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{ \
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ns##_LINK_##name##_t *pHook; \
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if(!_hooks.link_##name) \
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{ \
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_hooks.link_##name=apr_array_make(apr_hook_global_pool,1,sizeof(ns##_LINK_##name##_t)); \
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apr_hook_sort_register(#name,&_hooks.link_##name); \
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} \
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pHook=apr_array_push(_hooks.link_##name); \
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pHook->pFunc=pf; \
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pHook->aszPredecessors=aszPre; \
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pHook->aszSuccessors=aszSucc; \
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pHook->nOrder=nOrder; \
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pHook->szName=apr_hook_debug_current; \
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if(apr_hook_debug_enabled) \
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apr_hook_debug_show(#name,aszPre,aszSucc); \
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} \
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APR_IMPLEMENT_HOOK_GET_PROTO(ns,link,name) \
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{ \
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return _hooks.link_##name; \
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}
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00103 #define APR_IMPLEMENT_EXTERNAL_HOOK_VOID(ns,link,name,args_decl,args_use) \
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APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ns,link,name) \
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link##_DECLARE(void) 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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\
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if(!_hooks.link_##name) \
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return; \
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\
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pHook=(ns##_LINK_##name##_t *)_hooks.link_##name->elts; \
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for(n=0 ; n < _hooks.link_##name->nelts ; ++n) \
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pHook[n].pFunc args_use; \
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}
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00136 #define APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL(ns,link,ret,name,args_decl,args_use,ok,decline) \
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APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ns,link,name) \
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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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\
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if(!_hooks.link_##name) \
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return ok; \
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\
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pHook=(ns##_LINK_##name##_t *)_hooks.link_##name->elts; \
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for(n=0 ; n < _hooks.link_##name->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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00173 #define APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ns,link,ret,name,args_decl,args_use,decline) \
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APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ns,link,name) \
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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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\
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if(!_hooks.link_##name) \
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return decline; \
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\
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pHook=(ns##_LINK_##name##_t *)_hooks.link_##name->elts; \
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for(n=0 ; n < _hooks.link_##name->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 != decline) \
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return rv; \
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} \
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return decline; \
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}
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00195
00197 #define APR_HOOK_REALLY_FIRST (-10)
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00199 #define APR_HOOK_FIRST 0
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00201 #define APR_HOOK_MIDDLE 10
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00203 #define APR_HOOK_LAST 20
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00205 #define APR_HOOK_REALLY_LAST 30
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APU_DECLARE_DATA extern apr_pool_t *
apr_hook_global_pool;
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APU_DECLARE_DATA extern int apr_hook_debug_enabled;
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APU_DECLARE_DATA extern const char *
apr_hook_debug_current;
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APU_DECLARE(
void) apr_hook_sort_register(const
char *szHookName,
00229 apr_array_header_t **aHooks);
00233 APU_DECLARE(
void) apr_hook_sort_all(
void);
00234
00242 APU_DECLARE(
void) apr_hook_debug_show(const
char *szName,
00243 const
char * const *aszPre,
00244 const
char * const *aszSucc);
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00249 APU_DECLARE(
void) apr_hook_deregister_all(
void);
00250
00252 #ifdef __cplusplus
00253 }
00254 #endif
00255
00256 #endif
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