void *
huge_palloc(tsd_t *tsd, arena_t *arena, size_t usize, size_t alignment,
bool zero, tcache_t *tcache)
{
void *ret;
extent_node_t *node;
bool is_zeroed;
/* Allocate one or more contiguous chunks for this request. */
/* Allocate an extent node with which to track the chunk. */
node = ipallocztm(tsd, CACHELINE_CEILING(sizeof(extent_node_t)),
CACHELINE, false, tcache, true, arena);
if (node == NULL)
return (NULL);
/*
* Copy zero into is_zeroed and pass the copy to chunk_alloc(), so that
* it is possible to make correct junk/zero fill decisions below.
*/
is_zeroed = zero;
/* ANDROID change */
#if !defined(__LP64__)
/* On 32 bit systems, using a per arena cache can exhaust
* virtual address space. Force all huge allocations to
* always take place in the first arena.
*/
arena = a0get();
#else
arena = arena_choose(tsd, arena);
#endif
/* End ANDROID change */
if (unlikely(arena == NULL) || (ret = arena_chunk_alloc_huge(arena,
usize, alignment, &is_zeroed)) == NULL) {
idalloctm(tsd, node, tcache, true);
return (NULL);
}
extent_node_init(node, arena, ret, usize, is_zeroed);
if (huge_node_set(ret, node)) {
arena_chunk_dalloc_huge(arena, ret, usize);
idalloctm(tsd, node, tcache, true);
return (NULL);
}
/* Insert node into huge. */
malloc_mutex_lock(&arena->huge_mtx);
ql_elm_new(node, ql_link);
ql_tail_insert(&arena->huge, node, ql_link);
malloc_mutex_unlock(&arena->huge_mtx);
if (zero || (config_fill && unlikely(opt_zero))) {
if (!is_zeroed)
memset(ret, 0, usize);
} else if (config_fill && unlikely(opt_junk_alloc))
memset(ret, 0xa5, usize);
return (ret);
}
void *
huge_palloc(tsd_t *tsd, arena_t *arena, size_t size, size_t alignment,
bool zero, tcache_t *tcache)
{
void *ret;
size_t usize;
extent_node_t *node;
bool is_zeroed;
/* Allocate one or more contiguous chunks for this request. */
usize = sa2u(size, alignment);
if (unlikely(usize == 0))
return (NULL);
assert(usize >= chunksize);
/* Allocate an extent node with which to track the chunk. */
node = ipallocztm(tsd, CACHELINE_CEILING(sizeof(extent_node_t)),
CACHELINE, false, tcache, true, arena);
if (node == NULL)
return (NULL);
/*
* Copy zero into is_zeroed and pass the copy to chunk_alloc(), so that
* it is possible to make correct junk/zero fill decisions below.
*/
is_zeroed = zero;
arena = arena_choose(tsd, arena);
if (unlikely(arena == NULL) || (ret = arena_chunk_alloc_huge(arena,
size, alignment, &is_zeroed)) == NULL) {
idalloctm(tsd, node, tcache, true, true);
return (NULL);
}
extent_node_init(node, arena, ret, size, is_zeroed, true);
if (huge_node_set(ret, node)) {
arena_chunk_dalloc_huge(arena, ret, size);
idalloctm(tsd, node, tcache, true, true);
return (NULL);
}
/* Insert node into huge. */
malloc_mutex_lock(&arena->huge_mtx);
ql_elm_new(node, ql_link);
ql_tail_insert(&arena->huge, node, ql_link);
malloc_mutex_unlock(&arena->huge_mtx);
if (zero || (config_fill && unlikely(opt_zero))) {
if (!is_zeroed)
memset(ret, 0, size);
} else if (config_fill && unlikely(opt_junk_alloc))
memset(ret, 0xa5, size);
return (ret);
}