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This commit is contained in:
Jakub Jelinek
2007-07-31 13:33:18 +00:00
parent d6220e9ee3
commit 32c075e1f0
448 changed files with 13841 additions and 10982 deletions
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48
malloc/malloc.c
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@ -1618,7 +1618,7 @@ static Void_t* memalign_check(size_t alignment, size_t bytes,
const Void_t *caller);
#ifndef NO_THREADS
# ifdef _LIBC
# if USE___THREAD || !defined SHARED
# if USE___THREAD || (defined USE_TLS && !defined SHARED)
/* These routines are never needed in this configuration. */
# define NO_STARTER
# endif
@ -2741,19 +2741,8 @@ static void do_check_malloc_state(mstate av)
for (i = 0; i < NFASTBINS; ++i) {
p = av->fastbins[i];
/* The following test can only be performed for the main arena.
While mallopt calls malloc_consolidate to get rid of all fast
bins (especially those larger than the new maximum) this does
only happen for the main arena. Trying to do this for any
other arena would mean those arenas have to be locked and
malloc_consolidate be called for them. This is excessive. And
even if this is acceptable to somebody it still cannot solve
the problem completely since if the arena is locked a
concurrent malloc call might create a new arena which then
could use the newly invalid fast bins. */
/* all bins past max_fast are empty */
if (av == &main_arena && i > max_fast_bin)
if (i > max_fast_bin)
assert(p == 0);
while (p != 0) {
@ -2896,13 +2885,7 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av;
is one SIZE_SZ unit larger than for normal chunks, because there
is no following chunk whose prev_size field could be used.
*/
#if 1
/* See the front_misalign handling below, for glibc there is no
need for further alignments. */
size = (nb + SIZE_SZ + pagemask) & ~pagemask;
#else
size = (nb + SIZE_SZ + MALLOC_ALIGN_MASK + pagemask) & ~pagemask;
#endif
tried_mmap = true;
/* Don't try if size wraps around 0 */
@ -2920,12 +2903,6 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av;
address argument for later munmap in free() and realloc().
*/
#if 1
/* For glibc, chunk2mem increases the address by 2*SIZE_SZ and
MALLOC_ALIGN_MASK is 2*SIZE_SZ-1. Each mmap'ed area is page
aligned and therefore definitely MALLOC_ALIGN_MASK-aligned. */
assert (((INTERNAL_SIZE_T)chunk2mem(mm) & MALLOC_ALIGN_MASK) == 0);
#else
front_misalign = (INTERNAL_SIZE_T)chunk2mem(mm) & MALLOC_ALIGN_MASK;
if (front_misalign > 0) {
correction = MALLOC_ALIGNMENT - front_misalign;
@ -2933,12 +2910,10 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av;
p->prev_size = correction;
set_head(p, (size - correction) |IS_MMAPPED);
}
else
#endif
{
p = (mchunkptr)mm;
set_head(p, size|IS_MMAPPED);
}
else {
p = (mchunkptr)mm;
set_head(p, size|IS_MMAPPED);
}
/* update statistics */
@ -4122,6 +4097,7 @@ _int_malloc(mstate av, size_t bytes)
for(;;) {
int iters = 0;
bool any_larger = false;
while ( (victim = unsorted_chunks(av)->bk) != unsorted_chunks(av)) {
bck = victim->bk;
if (__builtin_expect (victim->size <= 2 * SIZE_SZ, 0)
@ -4218,6 +4194,8 @@ _int_malloc(mstate av, size_t bytes)
fwd->bk = victim;
bck->fd = victim;
if (size >= nb + MINSIZE)
any_larger = true;
#define MAX_ITERS 10000
if (++iters >= MAX_ITERS)
break;
@ -4706,15 +4684,7 @@ static void malloc_consolidate(av) mstate av;
reused anyway.
*/
#if 0
/* It is wrong to limit the fast bins to search using get_max_fast
because, except for the main arena, all the others might have
blocks in the high fast bins. It's not worth it anyway, just
search all bins all the time. */
maxfb = &(av->fastbins[fastbin_index(get_max_fast ())]);
#else
maxfb = &(av->fastbins[NFASTBINS - 1]);
#endif
fb = &(av->fastbins[0]);
do {
if ( (p = *fb) != 0) {