zenithsiz/ftmemsim-valgrind
1
0
Fork 0
mirror of https://github.com/Zenithsiz/ftmemsim-valgrind.git synced 2026-02-04 02:18:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add_MAC_Chunk: mark shadow block as off-limits to the client so that

Browse Source 
the leak checker doesn't see the pointer to the real block.  As
detailed in the comment in this function, this must be masking a
deeper memory management bug.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1750
This commit is contained in:
Julian Seward 2003-07-12 01:41:24 +00:00
parent 407cd63e50
commit 33d1e7e957
1 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
memcheck/mac_malloc_wrappers.c
View File

@ -44,6 +44,13 @@ static UInt cmalloc_bs_mallocd = 0;
/* We want a 16B redzone on heap blocks for Addrcheck and Memcheck */
UInt VG_(vg_malloc_redzone_szB) = 16;
/* Function pointers for the two skins to track interesting events. */
void (*MAC_(new_mem_heap)) ( Addr a, UInt len, Bool is_inited );
void (*MAC_(ban_mem_heap)) ( Addr a, UInt len );
void (*MAC_(die_mem_heap)) ( Addr a, UInt len );
void (*MAC_(copy_mem_heap))( Addr from, Addr to, UInt len );
/*------------------------------------------------------------*/
/*--- Tracking malloc'd and free'd blocks ---*/
/*------------------------------------------------------------*/
@ -127,6 +134,14 @@ void add_MAC_Chunk ( ThreadState* tst, Addr p, UInt size, MAC_AllocKind kind )
mc->allockind = kind;
mc->where = VG_(get_ExeContext)(tst);
/* The following line puts the shadow chunk, and hence the pointer
to the real chunk, off-limits to the client. This seems to be
necessary to make the leak checker work reliably. Problem is,
this seems to point to something deeper being wrong: this chunk
is allocated in the AR_SKIN arena and so should by default be
off-limits to the client anyway. */
MAC_(ban_mem_heap)( (Addr)mc, sizeof(MAC_Chunk));
VG_(HT_add_node)( MAC_(malloc_list), (VgHashNode*)mc );
}
@ -134,12 +149,6 @@ void add_MAC_Chunk ( ThreadState* tst, Addr p, UInt size, MAC_AllocKind kind )
/*--- client_malloc(), etc ---*/
/*------------------------------------------------------------*/
/* Function pointers for the two skins to track interesting events. */
void (*MAC_(new_mem_heap)) ( Addr a, UInt len, Bool is_inited );
void (*MAC_(ban_mem_heap)) ( Addr a, UInt len );
void (*MAC_(die_mem_heap)) ( Addr a, UInt len );
void (*MAC_(copy_mem_heap))( Addr from, Addr to, UInt len );
/* Allocate memory and note change in memory available */
__inline__
void MAC_(new_block) ( ThreadState* tst, Addr p, UInt size,