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Diffstat (limited to 'src/plugins/sc_init.h')
| -rw-r--r-- | src/plugins/sc_init.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/plugins/sc_init.h b/src/plugins/sc_init.h new file mode 100644 index 0000000..b7ba1ef --- /dev/null +++ b/src/plugins/sc_init.h @@ -0,0 +1,113 @@ +/* + * 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__ |