示例#1
0
static void
huge_ralloc_no_move_similar(void *ptr, size_t oldsize, size_t usize,
    size_t size, size_t extra, bool zero)
{
	size_t usize_next;
	extent_node_t *node;
	arena_t *arena;
	chunk_purge_t *chunk_purge;
	bool zeroed;

	/* Increase usize to incorporate extra. */
	while (usize < s2u(size+extra) && (usize_next = s2u(usize+1)) < oldsize)
		usize = usize_next;

	if (oldsize == usize)
		return;

	node = huge_node_get(ptr);
	arena = extent_node_arena_get(node);

	malloc_mutex_lock(&arena->lock);
	chunk_purge = arena->chunk_purge;
	malloc_mutex_unlock(&arena->lock);

	/* Fill if necessary (shrinking). */
	if (oldsize > usize) {
		size_t sdiff = oldsize - usize;
		zeroed = !chunk_purge_wrapper(arena, chunk_purge, ptr, usize,
		    sdiff);
		if (config_fill && unlikely(opt_junk_free)) {
			memset((void *)((uintptr_t)ptr + usize), 0x5a, sdiff);
			zeroed = false;
		}
	} else
		zeroed = true;

	malloc_mutex_lock(&arena->huge_mtx);
	/* Update the size of the huge allocation. */
	assert(extent_node_size_get(node) != usize);
	extent_node_size_set(node, usize);
	/* Clear node's zeroed field if zeroing failed above. */
	extent_node_zeroed_set(node, extent_node_zeroed_get(node) && zeroed);
	malloc_mutex_unlock(&arena->huge_mtx);

	arena_chunk_ralloc_huge_similar(arena, ptr, oldsize, usize);

	/* Fill if necessary (growing). */
	if (oldsize < usize) {
		if (zero || (config_fill && unlikely(opt_zero))) {
			if (!zeroed) {
				memset((void *)((uintptr_t)ptr + oldsize), 0,
				    usize - oldsize);
			}
		} else if (config_fill && unlikely(opt_junk_alloc)) {
			memset((void *)((uintptr_t)ptr + oldsize), 0xa5, usize -
			    oldsize);
		}
	}
}
示例#2
0
static void
huge_ralloc_no_move_similar(void *ptr, size_t oldsize, size_t usize_min,
    size_t usize_max, bool zero)
{
	size_t usize, usize_next;
	extent_node_t *node;
	arena_t *arena;
	chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER;
	bool pre_zeroed, post_zeroed;

	/* Increase usize to incorporate extra. */
	for (usize = usize_min; usize < usize_max && (usize_next = s2u(usize+1))
	    <= oldsize; usize = usize_next)
		; /* Do nothing. */

	if (oldsize == usize)
		return;

	node = huge_node_get(ptr);
	arena = extent_node_arena_get(node);
	pre_zeroed = extent_node_zeroed_get(node);

	/* Fill if necessary (shrinking). */
	if (oldsize > usize) {
		size_t sdiff = oldsize - usize;
		if (config_fill && unlikely(opt_junk_free)) {
			memset((void *)((uintptr_t)ptr + usize), 0x5a, sdiff);
			post_zeroed = false;
		} else {
			post_zeroed = !chunk_purge_wrapper(arena, &chunk_hooks,
			    ptr, CHUNK_CEILING(oldsize), usize, sdiff);
		}
	} else
		post_zeroed = pre_zeroed;

	malloc_mutex_lock(&arena->huge_mtx);
	/* Update the size of the huge allocation. */
	assert(extent_node_size_get(node) != usize);
	extent_node_size_set(node, usize);
	/* Update zeroed. */
	extent_node_zeroed_set(node, post_zeroed);
	malloc_mutex_unlock(&arena->huge_mtx);

	arena_chunk_ralloc_huge_similar(arena, ptr, oldsize, usize);

	/* Fill if necessary (growing). */
	if (oldsize < usize) {
		if (zero || (config_fill && unlikely(opt_zero))) {
			if (!pre_zeroed) {
				memset((void *)((uintptr_t)ptr + oldsize), 0,
				    usize - oldsize);
			}
		} else if (config_fill && unlikely(opt_junk_alloc)) {
			memset((void *)((uintptr_t)ptr + oldsize), 0xa5, usize -
			    oldsize);
		}
	}
}
示例#3
0
static bool
huge_ralloc_no_move_shrink(void *ptr, size_t oldsize, size_t usize)
{
	extent_node_t *node;
	arena_t *arena;
	chunk_hooks_t chunk_hooks;
	size_t cdiff;
	bool pre_zeroed, post_zeroed;

	node = huge_node_get(ptr);
	arena = extent_node_arena_get(node);
	pre_zeroed = extent_node_zeroed_get(node);
	chunk_hooks = chunk_hooks_get(arena);

	assert(oldsize > usize);

	/* Split excess chunks. */
	cdiff = CHUNK_CEILING(oldsize) - CHUNK_CEILING(usize);
	if (cdiff != 0 && chunk_hooks.split(ptr, CHUNK_CEILING(oldsize),
	    CHUNK_CEILING(usize), cdiff, true, arena->ind))
		return (true);

	if (oldsize > usize) {
		size_t sdiff = oldsize - usize;
		if (config_fill && unlikely(opt_junk_free)) {
			huge_dalloc_junk((void *)((uintptr_t)ptr + usize),
			    sdiff);
			post_zeroed = false;
		} else {
			post_zeroed = !chunk_purge_wrapper(arena, &chunk_hooks,
			    CHUNK_ADDR2BASE((uintptr_t)ptr + usize),
			    CHUNK_CEILING(oldsize),
			    CHUNK_ADDR2OFFSET((uintptr_t)ptr + usize), sdiff);
		}
	} else
		post_zeroed = pre_zeroed;

	malloc_mutex_lock(&arena->huge_mtx);
	/* Update the size of the huge allocation. */
	extent_node_size_set(node, usize);
	/* Update zeroed. */
	extent_node_zeroed_set(node, post_zeroed);
	malloc_mutex_unlock(&arena->huge_mtx);

	/* Zap the excess chunks. */
	arena_chunk_ralloc_huge_shrink(arena, ptr, oldsize, usize);

	return (false);
}
示例#4
0
static void
huge_ralloc_no_move_shrink(void *ptr, size_t oldsize, size_t usize)
{
	extent_node_t *node;
	arena_t *arena;
	chunk_purge_t *chunk_purge;
	bool zeroed;

	node = huge_node_get(ptr);
	arena = extent_node_arena_get(node);

	malloc_mutex_lock(&arena->lock);
	chunk_purge = arena->chunk_purge;
	malloc_mutex_unlock(&arena->lock);

	if (oldsize > usize) {
		size_t sdiff = oldsize - usize;
		zeroed = !chunk_purge_wrapper(arena, chunk_purge,
		    CHUNK_ADDR2BASE((uintptr_t)ptr + usize),
		    CHUNK_ADDR2OFFSET((uintptr_t)ptr + usize), sdiff);
		if (config_fill && unlikely(opt_junk_free)) {
			huge_dalloc_junk((void *)((uintptr_t)ptr + usize),
			    sdiff);
			zeroed = false;
		}
	} else
		zeroed = true;

	malloc_mutex_lock(&arena->huge_mtx);
	/* Update the size of the huge allocation. */
	extent_node_size_set(node, usize);
	/* Clear node's zeroed field if zeroing failed above. */
	extent_node_zeroed_set(node, extent_node_zeroed_get(node) && zeroed);
	malloc_mutex_unlock(&arena->huge_mtx);

	/* Zap the excess chunks. */
	arena_chunk_ralloc_huge_shrink(arena, ptr, oldsize, usize);
}