rte_stack_lf.h

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2019 Intel Corporation
 */

#ifndef _RTE_STACK_LF_H_
#define _RTE_STACK_LF_H_

#if !(defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_ARM64))
#include "rte_stack_lf_stubs.h"
#else
#ifdef RTE_USE_C11_MEM_MODEL
#include "rte_stack_lf_c11.h"
#else
#include "rte_stack_lf_generic.h"
#endif

#define RTE_STACK_LF_SUPPORTED
#endif

static __rte_always_inline unsigned int
__rte_stack_lf_push(struct rte_stack *s,
            void * const *obj_table,
            unsigned int n)
{
    struct rte_stack_lf_elem *tmp, *first, *last = NULL;
    unsigned int i;

    if (unlikely(n == 0))
        return 0;

    /* Pop n free elements */
    first = __rte_stack_lf_pop_elems(&s->stack_lf.free, n, NULL, &last);
    if (unlikely(first == NULL))
        return 0;

    /* Construct the list elements */
    for (tmp = first, i = 0; i < n; i++, tmp = tmp->next)
        tmp->data = obj_table[n - i - 1];

    /* Push them to the used list */
    __rte_stack_lf_push_elems(&s->stack_lf.used, first, last, n);

    return n;
}

static __rte_always_inline unsigned int
__rte_stack_lf_pop(struct rte_stack *s, void **obj_table, unsigned int n)
{
    struct rte_stack_lf_elem *first, *last = NULL;

    if (unlikely(n == 0))
        return 0;

    /* Pop n used elements */
    first = __rte_stack_lf_pop_elems(&s->stack_lf.used,
                     n, obj_table, &last);
    if (unlikely(first == NULL))
        return 0;

    /* Push the list elements to the free list */
    __rte_stack_lf_push_elems(&s->stack_lf.free, first, last, n);

    return n;
}

void
rte_stack_lf_init(struct rte_stack *s, unsigned int count);

ssize_t
rte_stack_lf_get_memsize(unsigned int count);

#endif /* _RTE_STACK_LF_H_ */