Esempi in C++ (Cpp) per tfw_pool_alloc_pages

Esempio n. 1

File: pool.c Progetto: twdow/tempesta

void *
tfw_pool_alloc(TfwPool *p, size_t n)
{
	void *a;

	n = TFW_POOL_ALIGN_SZ(n);

	if (unlikely(p->off + n > TFW_POOL_CHUNK_SZ(p))) {
		TfwPoolChunk *c, *curr = p->curr;
		unsigned int off = TFW_POOL_ALIGN_SZ(sizeof(TfwPoolChunk)) + n;
		unsigned int order = get_order(off);

		c = (TfwPoolChunk *)tfw_pool_alloc_pages(order);
		if (!c)
			return NULL;
		c->next = curr;
		c->order = order;

		curr->off = p->off;

		p->order = order;
		p->off = off;
		p->curr = c;

		return (void *)TFW_POOL_ALIGN_SZ((unsigned long)(c + 1));
	}

	a = (char *)TFW_POOL_CHUNK_END(p);
	p->off += n;

	return a;
}

Esempio n. 2

File: pool.c Progetto: twdow/tempesta

/**
 * Allocate bit more pages than we need.
 */
TfwPool *
__tfw_pool_new(size_t n)
{
	TfwPool *p;
	TfwPoolChunk *c;
	unsigned int order;

	order = get_order(TFW_POOL_ALIGN_SZ(n) + TFW_POOL_HEAD_OFF);

	c = (TfwPoolChunk *)tfw_pool_alloc_pages(order);
	if (unlikely(!c))
		return NULL;

	p = (TfwPool *)((char *)c + TFW_POOL_ALIGN_SZ(sizeof(*c)));

	c->next = NULL;
	p->order = c->order = order;
	p->off = c->off = TFW_POOL_HEAD_OFF;
	p->curr = c;

	return p;
}

Esempio n. 3

File: pool.c Progetto: HuuzKee-Compiler/NatSys-Lab

TfwPool *
__tfw_pool_new(size_t n)
{
	TfwPool *p;
	TfwPoolChunk *c;
	unsigned int order;

	order = get_order(TFW_POOL_ALIGN_SZ(n) + TFW_POOL_HEAD_OFF);

	p = (TfwPool *)tfw_pool_alloc_pages(order);
	if (!p)
		return NULL;

	c = tfw_pool_chunk_first(p);
	c->next = NULL;
	c->order = order;
	c->off = TFW_POOL_ALIGN_SZ((char *)(c + 1) - (char *)p);

	p->curr = c;

	return p;
}