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Implemented malloc_usable_size(), which was used in a program written by

Browse Source 
Frederic Delley <fdelley@cisco.com>.

This required also adding VG_(arena_payload_szB)().


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1540
This commit is contained in:
Nicholas Nethercote 2003-04-22 22:45:55 +00:00
parent a00a117591
commit e7b23faa99
3 changed files with 34 additions and 4 deletions
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2
coregrind/vg_include.h
View File

@ -427,6 +427,8 @@ extern void* VG_(arena_realloc) ( ArenaId arena, void* ptr, Int alignment,
extern void* VG_(arena_malloc_aligned) ( ArenaId aid, Int req_alignB,
Int req_pszB );
extern Int VG_(arena_payload_szB) ( ArenaId aid, void* payload );
extern void VG_(mallocSanityCheckAll) ( void );
extern void VG_(show_all_arena_stats) ( void );

13
coregrind/vg_malloc2.c
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@ -325,7 +325,7 @@ Word* first_to_payload ( Arena* a, WordF* fw )
return & fw[3 + a->rz_szW];
}
/* Given the addr of the first word of a the payload of a block,
/* Given the addr of the first word of the payload of a block,
return the addr of the first word of the block. */
static __inline__
Word* payload_to_first ( Arena* a, WordF* payload )
@ -430,7 +430,7 @@ Int overhead_szW ( Arena* a )
}
/* Convert pointer size in words to block size in words, and back. */
/* Convert payload size in words to block size in words, and back. */
static __inline__
Int pszW_to_bszW ( Arena* a, Int pszW )
{
@ -445,6 +445,15 @@ Int bszW_to_pszW ( Arena* a, Int bszW )
return pszW;
}
Int VG_(arena_payload_szB) ( ArenaId aid, void* ptr )
{
Arena* a = arenaId_to_ArenaP(aid);
Word* fw = payload_to_first(a, (WordF*)ptr);
Int pszW = bszW_to_pszW(a, get_bszW_lo(fw));
return VKI_BYTES_PER_WORD * pszW;
}
/*------------------------------------------------------------*/
/*--- Functions for working with freelists. ---*/
/*------------------------------------------------------------*/

23
coregrind/vg_replace_malloc.c
View File

@ -362,6 +362,26 @@ int __posix_memalign ( void **memptr, UInt alignment, UInt size )
return VKI_ENOMEM /*12*/ /*ENOMEM*/;
}
Int malloc_usable_size ( void* p )
{
Int pszB;
MALLOC_TRACE("malloc_usable_size[simd=%d](%p)",
(UInt)VG_(is_running_on_simd_CPU)(), p );
if (NULL == p)
return 0;
if (VG_(is_running_on_simd_CPU)()) {
pszB = (Int)VALGRIND_NON_SIMD_CALL2( VG_(arena_payload_szB),
VG_AR_CLIENT, p );
} else {
pszB = VG_(arena_payload_szB)(VG_AR_CLIENT, p);
}
MALLOC_TRACE(" = %d\n", pszB );
return pszB;
}
/* Bomb out if we get any of these. */
/* HACK: We shouldn't call VG_(core_panic) or VG_(message) on the simulated
@ -372,8 +392,7 @@ void pvalloc ( void )
{ VG_(core_panic)("call to pvalloc\n"); }
void malloc_stats ( void )
{ VG_(core_panic)("call to malloc_stats\n"); }
void malloc_usable_size ( void )
{ VG_(core_panic)("call to malloc_usable_size\n"); }
void malloc_trim ( void )
{ VG_(core_panic)("call to malloc_trim\n"); }
void malloc_get_state ( void )