unique_id.h File Reference

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Defines
#define	LIBTHROWABLE_CONCAT_3(x, y)   x ## y
#define	LIBTHROWABLE_CONCAT_2(x, y)   LIBTHROWABLE_CONCAT_3(x, y)
#define	LIBTHROWABLE_CONCAT_1(x, y)   LIBTHROWABLE_CONCAT_2(x, y)
#define	LIBTHROWABLE_UNIQUE_ID   LIBTHROWABLE_CONCAT_1(libthrowableUniqueIdAtLine, __LINE__)
	File-unique identifier.

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Define Documentation

#define LIBTHROWABLE_CONCAT_1	(	x,
		y		)	LIBTHROWABLE_CONCAT_2(x, y)

#define LIBTHROWABLE_CONCAT_2	(	x,
		y		)	LIBTHROWABLE_CONCAT_3(x, y)

#define LIBTHROWABLE_CONCAT_3	(	x,
		y		)	x ## y

#define LIBTHROWABLE_UNIQUE_ID   LIBTHROWABLE_CONCAT_1(libthrowableUniqueIdAtLine, __LINE__)

File-unique identifier.

This macro can be used as a file-unique identifier. A small example is shown below:

 int LIBTHROWABLE_UNIQUE_ID = 4;

This will intialize an int called libthrowableUniqueIdAtLine<linenno> where linenno is the line at that point (i.e. if this were at line 40, the int would be called libthrowableUniqueIdAtLine40).

Warning:

This feature is used internally by libthrowable and is not intended for anything other than the LIBTHROWABLE_TRACE_* macros.

See also:

http://slack.net/~ant/cpp/unqiue_name.html

Since:

libthrowable-1.1.0

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