diff options
author | Jakub Jelinek <jakub@redhat.com> | 2005-03-19 21:04:10 +0000 |
---|---|---|
committer | Jakub Jelinek <jakub@redhat.com> | 2005-03-19 21:04:10 +0000 |
commit | 8f8ebbc438fcb4b22fba8beb3ef3d1aa59d9d7bf (patch) | |
tree | b7091affa76bbaf47e78a59dfc72b2102554eaf9 /malloc/malloc.c | |
parent | f5c3480e830e94e0e51a0bdb1053944daed8bc58 (diff) |
Updated to fedora-glibc-20050319T1907cvs/fedora-glibc-2_3_4-15
Diffstat (limited to 'malloc/malloc.c')
-rw-r--r-- | malloc/malloc.c | 85 |
1 files changed, 68 insertions, 17 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index 5c9e77e9ec..44831bbb1d 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -1006,6 +1006,7 @@ struct mallinfo public_mALLINFo(void); struct mallinfo public_mALLINFo(); #endif +#ifndef _LIBC /* independent_calloc(size_t n_elements, size_t element_size, Void_t* chunks[]); @@ -1129,6 +1130,8 @@ Void_t** public_iCOMALLOc(size_t, size_t*, Void_t**); Void_t** public_iCOMALLOc(); #endif +#endif /* _LIBC */ + /* pvalloc(size_t n); @@ -1507,8 +1510,10 @@ Void_t* _int_memalign(mstate, size_t, size_t); Void_t* _int_valloc(mstate, size_t); static Void_t* _int_pvalloc(mstate, size_t); /*static Void_t* cALLOc(size_t, size_t);*/ +#ifndef _LIBC static Void_t** _int_icalloc(mstate, size_t, size_t, Void_t**); static Void_t** _int_icomalloc(mstate, size_t, size_t*, Void_t**); +#endif static int mTRIm(size_t); static size_t mUSABLe(Void_t*); static void mSTATs(void); @@ -2305,7 +2310,9 @@ static void malloc_init_state(av) mstate av; static Void_t* sYSMALLOc(INTERNAL_SIZE_T, mstate); static int sYSTRIm(size_t, mstate); static void malloc_consolidate(mstate); +#ifndef _LIBC static Void_t** iALLOc(mstate, size_t, size_t*, int, Void_t**); +#endif #else static Void_t* sYSMALLOc(); static int sYSTRIm(); @@ -2359,6 +2366,14 @@ void weak_variable (*__after_morecore_hook) (void) = NULL; static int check_action = DEFAULT_CHECK_ACTION; +/* ------------------ Testing support ----------------------------------*/ + +static int perturb_byte; + +#define alloc_perturb(p, n) memset (p, (perturb_byte ^ 0xff) & 0xff, n) +#define free_perturb(p, n) memset (p, perturb_byte & 0xff, n) + + /* ------------------- Support for multiple arenas -------------------- */ #include "arena.c" @@ -3721,6 +3736,8 @@ public_cALLOc(size_t n, size_t elem_size) return mem; } +#ifndef _LIBC + Void_t** public_iCALLOc(size_t n, size_t elem_size, Void_t** chunks) { @@ -3751,8 +3768,6 @@ public_iCOMALLOc(size_t n, size_t sizes[], Void_t** chunks) return m; } -#ifndef _LIBC - void public_cFREe(Void_t* m) { @@ -3766,6 +3781,8 @@ public_mTRIm(size_t s) { int result; + if(__malloc_initialized < 0) + ptmalloc_init (); (void)mutex_lock(&main_arena.mutex); result = mTRIm(s); (void)mutex_unlock(&main_arena.mutex); @@ -3859,7 +3876,10 @@ _int_malloc(mstate av, size_t bytes) chunk2mem (victim)); *fb = victim->fd; check_remalloced_chunk(av, victim, nb); - return chunk2mem(victim); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } } @@ -3887,7 +3907,10 @@ _int_malloc(mstate av, size_t bytes) if (av != &main_arena) victim->size |= NON_MAIN_ARENA; check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } } } @@ -3958,7 +3981,10 @@ _int_malloc(mstate av, size_t bytes) set_foot(remainder, remainder_size); check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } /* remove from unsorted list */ @@ -3972,7 +3998,10 @@ _int_malloc(mstate av, size_t bytes) if (av != &main_arena) victim->size |= NON_MAIN_ARENA; check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } /* place chunk in bin */ @@ -4041,8 +4070,6 @@ _int_malloc(mstate av, size_t bytes) set_inuse_bit_at_offset(victim, size); if (av != &main_arena) victim->size |= NON_MAIN_ARENA; - check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); } /* Split */ else { @@ -4053,9 +4080,12 @@ _int_malloc(mstate av, size_t bytes) (av != &main_arena ? NON_MAIN_ARENA : 0)); set_head(remainder, remainder_size | PREV_INUSE); set_foot(remainder, remainder_size); - check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); } + check_malloced_chunk(av, victim, nb); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } } @@ -4124,8 +4154,6 @@ _int_malloc(mstate av, size_t bytes) set_inuse_bit_at_offset(victim, size); if (av != &main_arena) victim->size |= NON_MAIN_ARENA; - check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); } /* Split */ @@ -4142,9 +4170,12 @@ _int_malloc(mstate av, size_t bytes) (av != &main_arena ? NON_MAIN_ARENA : 0)); set_head(remainder, remainder_size | PREV_INUSE); set_foot(remainder, remainder_size); - check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); } + check_malloced_chunk(av, victim, nb); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } } @@ -4176,7 +4207,10 @@ _int_malloc(mstate av, size_t bytes) set_head(remainder, remainder_size | PREV_INUSE); check_malloced_chunk(av, victim, nb); - return chunk2mem(victim); + void *p = chunk2mem(victim); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; } /* @@ -4194,8 +4228,12 @@ _int_malloc(mstate av, size_t bytes) /* Otherwise, relay to handle system-dependent cases */ - else - return sYSMALLOc(nb, av); + else { + void *p = sYSMALLOc(nb, av); + if (__builtin_expect (perturb_byte, 0)) + alloc_perturb (p, bytes); + return p; + } } } @@ -4269,6 +4307,10 @@ _int_free(mstate av, Void_t* mem) errstr = "double free or corruption (fasttop)"; goto errout; } + + if (__builtin_expect (perturb_byte, 0)) + free_perturb (mem, size - SIZE_SZ); + p->fd = *fb; *fb = p; } @@ -4310,6 +4352,9 @@ _int_free(mstate av, Void_t* mem) goto errout; } + if (__builtin_expect (perturb_byte, 0)) + free_perturb (mem, size - SIZE_SZ); + /* consolidate backward */ if (!prev_inuse(p)) { prevsize = p->prev_size; @@ -4926,6 +4971,7 @@ Void_t* cALLOc(n_elements, elem_size) size_t n_elements; size_t elem_size; } #endif /* 0 */ +#ifndef _LIBC /* ------------------------- independent_calloc ------------------------- */ @@ -5089,6 +5135,7 @@ mstate av; size_t n_elements; size_t* sizes; int opts; Void_t* chunks[]; return marray; } +#endif /* _LIBC */ /* @@ -5361,6 +5408,10 @@ int mALLOPt(param_number, value) int param_number; int value; case M_CHECK_ACTION: check_action = value; break; + + case M_PERTURB: + perturb_byte = value; + break; } (void)mutex_unlock(&av->mutex); return res; |