apr_general.h

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/* 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.
 */
 
#ifndef APR_GENERAL_H
#define APR_GENERAL_H
 
#include "apr.h"
#include "apr_pools.h"
#include "apr_errno.h"
 
#if APR_HAVE_SIGNAL_H
#include <signal.h>
#endif
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE (!FALSE)
#endif
 
#define APR_ASCII_BLANK  '\040'
#define APR_ASCII_CR     '\015'
#define APR_ASCII_LF     '\012'
#define APR_ASCII_TAB    '\011'
 
typedef int               apr_signum_t;
 
/* Type of I/O to wait for */
typedef enum { APR_WAIT_READ, APR_WAIT_WRITE } apr_wait_type_t;
 
#if defined(CRAY) || (defined(__arm) && !(defined(LINUX) || defined(__FreeBSD__)))
#ifdef __STDC__
#define APR_OFFSET(p_type,field) _Offsetof(p_type,field)
#else
#ifdef CRAY2
#define APR_OFFSET(p_type,field) \
        (sizeof(int)*((unsigned int)&(((p_type)NULL)->field)))
 
#else /* !CRAY2 */
 
#define APR_OFFSET(p_type,field) ((unsigned int)&(((p_type)NULL)->field))
 
#endif /* !CRAY2 */
#endif /* __STDC__ */
#else /* ! (CRAY || __arm) */
 
#define APR_OFFSET(p_type,field) \
        ((long) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
 
#endif /* !CRAY */
 
#if defined(__has_builtin)
#if __has_builtin(__builtin_offsetof)
#define APR_OFFSETOF(s_type,field) __builtin_offsetof(s_type,field)
#endif
#endif /* __has_builtin */
#ifndef APR_OFFSETOF
#if defined(offsetof) && !defined(__cplusplus)
#define APR_OFFSETOF(s_type,field) offsetof(s_type,field)
#else
#define APR_OFFSETOF(s_type,field) APR_OFFSET(s_type*,field)
#endif
#endif /* ndef APR_OFFSETOF */
 
#ifndef DOXYGEN
 
/* A couple of prototypes for functions in case some platform doesn't
 * have it
 */
#if (!APR_HAVE_STRCASECMP) && (APR_HAVE_STRICMP)
#define strcasecmp(s1, s2) stricmp(s1, s2)
#elif (!APR_HAVE_STRCASECMP)
int strcasecmp(const char *a, const char *b);
#endif
 
#if (!APR_HAVE_STRNCASECMP) && (APR_HAVE_STRNICMP)
#define strncasecmp(s1, s2, n) strnicmp(s1, s2, n)
#elif (!APR_HAVE_STRNCASECMP)
int strncasecmp(const char *a, const char *b, size_t n);
#endif
 
#endif
 
/* APR_ALIGN() is only to be used to align on a power of 2 boundary */
#define APR_ALIGN(size, boundary) \
    (((size) + ((boundary) - 1)) & ~((boundary) - 1))
 
#define APR_ALIGN_DEFAULT(size) APR_ALIGN(size, 8)
 
 
/* APR_STRINGIFY is defined here, and also in apr_release.h, so wrap it */
#ifndef APR_STRINGIFY
#define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n)
#define APR_STRINGIFY_HELPER(n) #n
#endif
 
#if (!APR_HAVE_MEMMOVE)
#define memmove(a,b,c) bcopy(b,a,c)
#endif
 
#if (!APR_HAVE_MEMCHR)
void *memchr(const void *s, int c, size_t n);
#endif
 
#define APR_TYPEDEF_STRUCT(type, incompletion) \
struct type { \
   incompletion \
   void *unk[]; \
};
 
APR_DECLARE(apr_status_t) apr_initialize(void);
 
APR_DECLARE(apr_status_t) apr_app_initialize(int *argc,
                                             char const * const * *argv,
                                             char const * const * *env);
 
APR_DECLARE_NONSTD(void) apr_terminate(void);
 
APR_DECLARE(void) apr_terminate2(void);
 
#if APR_HAS_RANDOM || defined(DOXYGEN)
 
/* TODO: I'm not sure this is the best place to put this prototype...*/
APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char * buf,
                                                    apr_size_t length);
 
#endif
#ifdef __cplusplus
}
#endif
 
#endif  /* ! APR_GENERAL_H */