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/*
* Copyright (c) 2019 Tieto and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __SC_INIT_H__
#define __SC_INIT_H__
#include <sysrepo.h>
struct sc_plugin_main_t;
/* Init/exit functions: called at start/end of sr plugin init/cleaup. */
typedef int (sc_init_function_t) (struct sc_plugin_main_t *pm);
typedef void (sc_exit_function_t) (struct sc_plugin_main_t *pm);
/* Declaration of init/exit Linked List structures */
#define foreach_sc_declare_function_list \
_(init) \
_(exit)
#define _(tag) \
typedef struct _sc_##tag##_function_list_elt { \
struct _sc_##tag##_function_list_elt *next; \
sc_##tag##_function_t *func; \
bool is_called; \
} _sc_##tag##_function_list_elt_t;
foreach_sc_declare_function_list
#undef _
/* Declaration of add/rm function that need to be add/remote link list */
#define SC_DECLARE_FUNCTION(f, tag) \
static void __sc_add_##tag##_function_##f() __attribute__((__constructor__)); \
static void __sc_add_##tag##_function_##f() \
{ \
sc_plugin_main_t *pm = sc_get_plugin_main(); \
static _sc_##tag##_function_list_elt_t _sc_##tag##_function; \
_sc_##tag##_function.next = pm->tag##_function_registrations; \
_sc_##tag##_function.func = &f; \
_sc_##tag##_function.is_called = false; \
pm->tag##_function_registrations = &_sc_##tag##_function; \
} \
static void __sc_rm_##tag##_function_##f() __attribute__((__destructor__)); \
static void __sc_rm_##tag##_function_##f() \
{ \
sc_plugin_main_t *pm = sc_get_plugin_main(); \
_sc_##tag##_function_list_elt_t *p; \
if (pm->tag##_function_registrations->func == &f) { \
pm->tag##_function_registrations = pm->tag##_function_registrations->next; \
return; \
} \
p = pm->tag##_function_registrations; \
while (p->next != NULL) { \
if (p->next->func == &f) { \
p->next = p->next->next; \
return; \
} \
p = p->next; \
} \
}
/* Macros to be called from yang model implementation.
Register init and exit functions for YANG model implementation in Linked List. */
#define SC_INIT_FUNCTION(f) SC_DECLARE_FUNCTION(f, init)
#define SC_EXIT_FUNCTION(f) SC_DECLARE_FUNCTION(f, exit)
/* Call given init/exit function: used for init/exit function dependencies. */
#define sc_call_init_function(f, pm) \
({ \
int _ret = SR_ERR_OK; \
_sc_init_function_list_elt_t *p = pm->init_function_registrations; \
while (p != NULL) { \
if (p->func == f && !p->is_called) { \
p->is_called = true; \
_ret = p->func(pm); \
break; \
} \
p = p->next; \
} \
_ret; \
})
#define sc_call_exit_function(f, pm) \
({ \
_sc_exit_function_list_elt_t *p = pm->exit_function_registrations; \
while (p != NULL) { \
if (p->func == f && !p->is_called) { \
p->is_called = true; \
p->func(pm); \
break; \
} \
p = p->next; \
} \
})
/* Run through all registered init/exit functions of models. */
int
sc_call_all_init_function(struct sc_plugin_main_t *pm);
void
sc_call_all_exit_function(struct sc_plugin_main_t *pm);
#endif //__SC_INIT_H__
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