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* malloc/arena.c (ptmalloc_init): Recognize MALLOC_PERTURB_ and call

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mallopt appropriately.
	* malloc/malloc.h: Define M_PERTURB.
	* malloc/malloc.c (perturb_byte): New variable.
	(alloc_perturb, free_perturb): New macros.
	(_int_malloc): Before returning, overwrite the memory if this is
	requested.
	(_int_free): Overwrite freed memory if requested.
	(mALLOPt): Handle M_PERTURB.
	* test-skeleton.c: Add call to mallopt with M_PERTURB command.
This commit is contained in:
Ulrich Drepper
2005-03-08 00:50:21 +00:00
parent a5a33449fb
commit 854278dff8
4 changed files with 72 additions and 16 deletions
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malloc/malloc.h
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@ -122,6 +122,7 @@ extern struct mallinfo mallinfo __MALLOC_P ((void));
#define M_MMAP_THRESHOLD -3
#define M_MMAP_MAX -4
#define M_CHECK_ACTION -5
#define M_PERTURB -6
/* General SVID/XPG interface to tunable parameters. */
extern int mallopt __MALLOC_P ((int __param, int __val));