Miscellaneous library routines

Macros
#define	APR_ASCII_BLANK   '\040'
#define	APR_ASCII_CR   '\015'
#define	APR_ASCII_LF   '\012'
#define	APR_ASCII_TAB   '\011'
#define	APR_OFFSET(p_type, field)   ((long) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
#define	APR_OFFSETOF(s_type, field)   APR_OFFSET(s_type*,field)
#define	APR_ALIGN(size, boundary)   (((size) + ((boundary) - 1)) & ~((boundary) - 1))
#define	APR_ALIGN_DEFAULT(size)   APR_ALIGN(size, 8)

Typedefs
typedef int	apr_signum_t

Detailed Description

This is collection of oddballs that didn't fit anywhere else, and might move to more appropriate headers with the release of APR 1.0.

Macro Definition Documentation

APR_ALIGN

#define APR_ALIGN	(		size,
			boundary
	)		(((size) + ((boundary) - 1)) & ~((boundary) - 1))

Alignment macros

APR_ALIGN_DEFAULT

#define APR_ALIGN_DEFAULT

(

size

)

APR_ALIGN(size, 8)

Default alignment

APR_ASCII_BLANK

#define APR_ASCII_BLANK   '\040'

FALSE TRUE a space

APR_ASCII_CR

#define APR_ASCII_CR   '\015'

a carrige return

APR_ASCII_LF

#define APR_ASCII_LF   '\012'

a line feed

APR_ASCII_TAB

#define APR_ASCII_TAB   '\011'

a tab

APR_OFFSET

#define APR_OFFSET	(		p_type,
			field
	)		((long) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))

Finding offsets of elements within structures. Taken from the X code... they've sweated portability of this stuff so we don't have to. Sigh...

Parameters

p_type	pointer type name
field	data field within the structure pointed to

Returns

offset

APR_OFFSETOF

#define APR_OFFSETOF	(		s_type,
			field
	)		APR_OFFSET(s_type*,field)

Finding offsets of elements within structures.

Parameters

s_type	structure type name
field	data field within the structure

Returns

offset

Typedef Documentation

apr_signum_t

typedef int apr_signum_t

signal numbers typedef