cne_tailq.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2019-2022 Intel Corporation
 */
 
#ifndef _CNE_TAILQ_H_
#define _CNE_TAILQ_H_
 
#include <sys/queue.h>
#include <stdio.h>
 
#include <cne_common.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct cne_tailq_entry {
    TAILQ_ENTRY(cne_tailq_entry) next; 
    void *data;                        
};
TAILQ_HEAD(cne_tailq_entry_head, cne_tailq_entry);
 
#define CNE_MAX_TAILQS     32
#define CNE_TAILQ_NAMESIZE 32
 
struct cne_tailq_head {
    struct cne_tailq_entry_head tailq_head; 
    char name[CNE_TAILQ_NAMESIZE];
};
 
struct cne_tailq_elem {
    struct cne_tailq_head *head;
    TAILQ_ENTRY(cne_tailq_elem) next;
    const char name[CNE_TAILQ_NAMESIZE];
};
 
#define CNE_REGISTER_TAILQ(t)                                   \
    CNE_INIT(tailqinitfn_##t)                                   \
    {                                                           \
        if (cne_tailq_register(&t) < 0)                         \
            cne_panic("Cannot initialize tailq: %s\n", t.name); \
    }
 
#define CNE_TAILQ_CAST(tailq_entry, struct_name) (struct struct_name *)&(tailq_entry)->tailq_head
 
#define CNE_TAILQ_LOOKUP(name, struct_name) CNE_TAILQ_CAST(cne_tailq_lookup(name), struct_name)
 
CNDP_API int cne_tailqs_init(void);
 
CNDP_API int cne_tailq_register(struct cne_tailq_elem *t);
 
CNDP_API void cne_dump_tailq(void);
 
CNDP_API struct cne_tailq_head *cne_tailq_lookup(const char *name);
 
CNDP_API int cne_eal_tailq_register(struct cne_tailq_elem *t);
 
#ifndef TAILQ_FOREACH_SAFE
// clang-format off
#define TAILQ_FOREACH_SAFE(var, head, field, tvar)      \
    for ((var) = TAILQ_FIRST((head));           \
        (var) && ((tvar) = TAILQ_NEXT((var), field), 1);    \
        (var) = (tvar))
// clang-format on
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif /* _CNE_TAILQ_H_ */