Module Magic Number
[Apache Core]

マクロ定義
#define	MODULE_MAGIC_COOKIE   0x41503232UL
#define	MODULE_MAGIC_NUMBER_MAJOR   20051115
#define	MODULE_MAGIC_NUMBER_MINOR   3
#define	AP_MODULE_MAGIC_AT_LEAST(major, minor)
#define	MODULE_MAGIC_NUMBER   MODULE_MAGIC_NUMBER_MAJOR
#define	MODULE_MAGIC_AT_LEAST   old_broken_macro_we_hope_you_are_not_using

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マクロ定義

#define AP_MODULE_MAGIC_AT_LEAST	(	major,
		minor		)

値:

((major) < MODULE_MAGIC_NUMBER_MAJOR            \
        || ((major) == MODULE_MAGIC_NUMBER_MAJOR        \
            && (minor) <= MODULE_MAGIC_NUMBER_MINOR))

Determine if the server's current MODULE_MAGIC_NUMBER is at least a specified value.

 Useful for testing for features.
 For example, suppose you wish to use the apr_table_overlap
    function.  You can do this:

 if AP_MODULE_MAGIC_AT_LEAST(19980812,2)
     ... use apr_table_overlap()
 else
     ... alternative code which doesn't use apr_table_overlap()
 endif
 

引数:

	major	The major module magic number
	minor	The minor module magic number AP_MODULE_MAGIC_AT_LEAST(int major, int minor)

#define MODULE_MAGIC_NUMBER   MODULE_MAGIC_NUMBER_MAJOR

非推奨:

present for backwards compatibility

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