예제 #1
0
void *
huge_palloc(size_t size, size_t alignment, bool zero)
{
	void *ret;
	size_t csize;
	extent_node_t *node;
	bool is_zeroed;

	/* Allocate one or more contiguous chunks for this request. */

	csize = CHUNK_CEILING(size);
	if (csize == 0) {
		/* size is large enough to cause size_t wrap-around. */
		return (NULL);
	}

	/* Allocate an extent node with which to track the chunk. */
	node = base_node_alloc();
	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;
	ret = chunk_alloc(csize, alignment, false, &is_zeroed,
	    chunk_dss_prec_get());
	if (ret == NULL) {
		base_node_dealloc(node);
		return (NULL);
	}

	/* Insert node into huge. */
	node->addr = ret;
	node->size = csize;

	malloc_mutex_lock(&huge_mtx);
	extent_tree_ad_insert(&huge, node);
	if (config_stats) {
		stats_cactive_add(csize);
		huge_nmalloc++;
		huge_allocated += csize;
	}
	malloc_mutex_unlock(&huge_mtx);

	if (config_fill && zero == false) {
		if (opt_junk)
			memset(ret, 0xa5, csize);
		else if (opt_zero && is_zeroed == false)
			memset(ret, 0, csize);
	}

	return (ret);
}
예제 #2
0
파일: ctl.c 프로젝트: GlassFace/sunwell
static int
arena_i_dss_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
    void *newp, size_t newlen)
{
	int ret, i;
	bool match, err;
	const char *dss;
	unsigned arena_ind = mib[1];
	dss_prec_t dss_prec_old = dss_prec_limit;
	dss_prec_t dss_prec = dss_prec_limit;

	malloc_mutex_lock(&ctl_mtx);
	WRITE(dss, const char *);
	match = false;
	for (i = 0; i < dss_prec_limit; i++) {
		if (strcmp(dss_prec_names[i], dss) == 0) {
			dss_prec = i;
			match = true;
			break;
		}
	}
	if (match == false) {
		ret = EINVAL;
		goto label_return;
	}

	if (arena_ind < ctl_stats.narenas) {
		arena_t *arena = arenas[arena_ind];
		if (arena != NULL) {
			dss_prec_old = arena_dss_prec_get(arena);
			arena_dss_prec_set(arena, dss_prec);
			err = false;
		} else
			err = true;
	} else {
		dss_prec_old = chunk_dss_prec_get();
		err = chunk_dss_prec_set(dss_prec);
	}
	dss = dss_prec_names[dss_prec_old];
	READ(dss, const char *);
	if (err) {
		ret = EFAULT;
		goto label_return;
	}

	ret = 0;
label_return:
	malloc_mutex_unlock(&ctl_mtx);
	return (ret);
}
예제 #3
0
static bool
base_pages_alloc(size_t minsize)
{
	size_t csize;
	bool zero;

	assert(minsize != 0);
	csize = CHUNK_CEILING(minsize);
	zero = false;
	base_pages = chunk_alloc(csize, chunksize, true, &zero,
	    chunk_dss_prec_get());
	if (base_pages == NULL)
		return (true);
	base_next_addr = base_pages;
	base_past_addr = (void *)((uintptr_t)base_pages + csize);

	return (false);
}