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acddc0ed 1// SPDX-License-Identifier: LGPL-2.1-or-later
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2/*
3 * This file is part of the PCEPlib, a PCEP protocol library.
4 *
5 * Copyright (C) 2020 Volta Networks https://voltanet.io/
6 *
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7 * Author : Brady Johnson <brady@voltanet.io>
8 *
9 */
10
11
12/*
13 * Public API for pcep_timers
14 */
15
16#ifndef PCEPTIMERS_H_
17#define PCEPTIMERS_H_
18
19#include <pthread.h>
20#include <stdbool.h>
21
22#include "pcep_timer_internals.h"
23
24#define TIMER_ID_NOT_SET -1
25
26/*
27 * Initialize the timers module.
28 * The timer_expire_handler function pointer will be called each time a timer
29 * expires. Return true for successful initialization, false otherwise.
30 */
31bool initialize_timers(timer_expire_handler expire_handler);
32
33/*
34 * Initialize the timers module with an external back-end infrastructure, like
35 * FRR.
36 */
37bool initialize_timers_external_infra(
38 timer_expire_handler expire_handler, void *external_timer_infra_data,
39 ext_timer_create timer_create_func, ext_timer_cancel timer_cancel_func,
40 ext_pthread_create_callback thread_create_func);
41
42/*
43 * Teardown the timers module.
44 */
45bool teardown_timers(void);
46
47/*
48 * Create a new timer for "sleep_seconds" seconds.
49 * If the timer expires before being cancelled, the timer_expire_handler
50 * passed to initialize_timers() will be called with the pointer to "data".
51 * Returns a timer_id <= 0 that can be used to cancel_timer.
52 * Returns < 0 on error.
53 */
54int create_timer(uint16_t sleep_seconds, void *data);
55
56/*
57 * Cancel a timer created with create_timer().
58 * Returns true if the timer was found and cancelled, false otherwise.
59 */
60bool cancel_timer(int timer_id);
61
62/*
63 * Reset an previously created timer, maintaining the same timer_id.
64 * Returns true if the timer was found and reset, false otherwise.
65 */
66bool reset_timer(int timer_id);
67
68/*
69 * If an external timer infra like FRR is used, then this function
70 * will be called when the timers expire in the external infra.
71 */
72void pceplib_external_timer_expire_handler(void *data);
73
74int timer_list_node_compare(void *list_entry, void *new_entry);
75int timer_list_node_timer_id_compare(void *list_entry, void *new_entry);
76int timer_list_node_timer_ptr_compare(void *list_entry, void *new_entry);
77void free_all_timers(pcep_timers_context *timers_context);
78int get_next_timer_id(void);
79
80#endif /* PCEPTIMERS_H_ */