Pointer Tagging Helpers. More...

Detailed Description

Pointer Tagging Helpers.

Author: Marian Buschsieweke maria.nosp@m.n.bu.nosp@m.schsi.nosp@m.ewek.nosp@m.e@ovg.nosp@m.u.de

Definition in file ptrtag.h.

#include <assert.h>
#include <inttypes.h>
#include <stdint.h>

Include dependency graph for ptrtag.h:

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Macros
#define	PTRTAG __attribute__((aligned(4)))
	Pointers to data marked with this attribute will be tag-able.

Functions
static void *	ptrtag (void *ptr, uint8_t tag)
	Create a tagged pointer.

static void *	ptrtag_ptr (void *tagged_ptr)
	Extract the original pointer from a tagged pointer.

static uint8_t	ptrtag_tag (void *tagged_ptr)
	Extract the tag from a tagged pointer.

Macros