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PATH: opt / cpanel / ea-apr16 / include / apr-1

/* 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 apr_optional_hooks.h
 * @brief Apache optional hook functions
 */

#ifndef APR_OPTIONAL_HOOK_H
#define APR_OPTIONAL_HOOK_H

#include "apr_tables.h"

#ifdef __cplusplus
extern "C" {
#endif
/** 
 * @defgroup APR_Util_OPT_HOOK Optional Hook Functions
 * @ingroup APR_Util_Hook
 * @{
 */
/**
 * Function to implement the APR_OPTIONAL_HOOK Macro
 * @internal
 * @see APR_OPTIONAL_HOOK
 *
 * @param szName The name of the hook
 * @param pfn A pointer to a function that will be called
 * @param aszPre a NULL-terminated array of strings that name modules whose hooks should precede this one
 * @param aszSucc a NULL-terminated array of strings that name modules whose hooks should succeed this one
 * @param nOrder an integer determining order before honouring aszPre and aszSucc (for example HOOK_MIDDLE)
 */

APU_DECLARE(void) apr_optional_hook_add(const char *szName,void (*pfn)(void),
					const char * const *aszPre,
					const char * const *aszSucc,
					int nOrder);

/**
 * Hook to an optional hook.
 *
 * @param ns The namespace prefix of the hook functions
 * @param name The name of the hook
 * @param pfn A pointer to a function that will be called
 * @param aszPre a NULL-terminated array of strings that name modules whose hooks should precede this one
 * @param aszSucc a NULL-terminated array of strings that name modules whose hooks should succeed this one
 * @param nOrder an integer determining order before honouring aszPre and aszSucc (for example HOOK_MIDDLE)
 */

#define APR_OPTIONAL_HOOK(ns,name,pfn,aszPre,aszSucc,nOrder) do { \
  ns##_HOOK_##name##_t *apu__hook = pfn; \
  apr_optional_hook_add(#name,(void (*)(void))apu__hook,aszPre, aszSucc, nOrder); \
} while (0)

/**
 * @internal
 * @param szName - the name of the function
 * @return the hook structure for a given hook
 */
APU_DECLARE(apr_array_header_t *) apr_optional_hook_get(const char *szName);

/**
 * Implement an optional hook that runs until one of the functions
 * returns something other than OK or DECLINE.
 *
 * @param ns The namespace prefix of the hook functions
 * @param link The linkage declaration prefix of the hook
 * @param ret The type of the return value of the hook
 * @param ret The type of the return value of the hook
 * @param name The name of the hook
 * @param args_decl The declaration of the arguments for the hook
 * @param args_use The names for the arguments for the hook
 * @param ok Success value
 * @param decline Decline value
 */
#define APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ns,link,ret,name,args_decl,args_use,ok,decline) \
link##_DECLARE(ret) ns##_run_##name args_decl \
    { \
    ns##_LINK_##name##_t *pHook; \
    int n; \
    ret rv; \
    apr_array_header_t *pHookArray=apr_optional_hook_get(#name); \
\
    if(!pHookArray) \
	return ok; \
\
    pHook=(ns##_LINK_##name##_t *)pHookArray->elts; \
    for(n=0 ; n < pHookArray->nelts ; ++n) \
	{ \
	rv=(pHook[n].pFunc)args_use; \
\
	if(rv != ok && rv != decline) \
	    return rv; \
	} \
    return ok; \
    }

/** @} */
#ifdef __cplusplus
}
#endif

#endif /* APR_OPTIONAL_HOOK_H */

[-] apr_cstr.h [edit]
[-] apr_inherit.h [edit]
[-] apr_version.h [edit]
[-] apr_queue.h [edit]
[-] apr_xlate.h [edit]
[-] apr_sdbm.h [edit]
[-] apr_network_io.h [edit]
[-] apr_atomic.h [edit]
[-] apr_poll.h [edit]
[-] apr_fnmatch.h [edit]
[-] apr_pools.h [edit]
[-] apr_getopt.h [edit]
[-] apr_portable.h [edit]
[-] apr_proc_mutex.h [edit]
[+] ..
[-] apr_optional_hooks.h [edit]
[-] apr.h [edit]
[-] apr_ldap.h [edit]
[-] apr_ldap_url.h [edit]
[-] apr_ldap_init.h [edit]
[-] apr_file_io.h [edit]
[-] apr_encode.h [edit]
[-] apr_general.h [edit]
[-] apr_optional.h [edit]
[-] apr_time.h [edit]
[-] apr_mmap.h [edit]
[-] apr_memcache.h [edit]
[-] apr_thread_pool.h [edit]
[-] apr_errno.h [edit]
[-] apr_tables.h [edit]
[-] apr_random.h [edit]
[-] apr_strings.h [edit]
[-] apu_want.h [edit]
[-] apr_reslist.h [edit]
[-] apr_escape.h [edit]
[-] apr_base64.h [edit]
[-] apr_uri.h [edit]
[-] apr_strmatch.h [edit]
[-] apr_crypto.h [edit]
[-] apr_md5.h [edit]
[-] apr_xml.h [edit]
[-] apr_siphash.h [edit]
[-] apr_thread_mutex.h [edit]
[-] apr_redis.h [edit]
[-] apr_date.h [edit]
[-] apr_support.h [edit]
[-] apr_shm.h [edit]
[-] apr_uuid.h [edit]
[-] apu_version.h [edit]
[-] apr_sha1.h [edit]
[-] apr_rmm.h [edit]
[-] apr_dbm.h [edit]
[-] apr_thread_rwlock.h [edit]
[-] apr_hash.h [edit]
[-] apr_thread_proc.h [edit]
[-] apr-x86_64.h [edit]
[-] apr_lib.h [edit]
[-] apr_dso.h [edit]
[-] apr_user.h [edit]
[-] apr_global_mutex.h [edit]
[-] apr_allocator.h [edit]
[-] apr_file_info.h [edit]
[-] apr_anylock.h [edit]
[-] apu_errno.h [edit]
[-] apr_env.h [edit]
[-] apr_want.h [edit]
[-] apr_signal.h [edit]
[-] apr_hooks.h [edit]
[-] apr_buckets.h [edit]
[-] apr_ldap_rebind.h [edit]
[-] apr_thread_cond.h [edit]
[-] apr_md4.h [edit]
[-] apr_ring.h [edit]
[-] apr_skiplist.h [edit]
[-] apr_ldap_option.h [edit]
[-] apr_perms_set.h [edit]
[-] apu.h [edit]
[-] apr_dbd.h [edit]