1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
;;; Copyright (c) 2016 Cisco 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.
;;; pipe-skel.el - pipelined graph node skeleton
(require 'skeleton)
(define-skeleton skel-periodic
"Insert a skeleton periodic process node"
nil
'(setq node-name (skeleton-read "Name: "))
'(setq uc-node-name (upcase node-name))
'(setq poll-period (skeleton-read "Poll period (f64 seconds, e.g. 10.0): "))
"
#define " uc-node-name "_POLL_PERIOD " poll-period "
static uword
" node-name "_process (vlib_main_t * vm,
vlib_node_runtime_t * rt,
vlib_frame_t * f)
{
f64 poll_time_remaining;
uword event_type, * event_data = 0;
poll_time_remaining = " uc-node-name "_POLL_PERIOD;
while (1) {
int i;
/*
* Sleep until next periodic call due, or until we receive event(s)
*/
poll_time_remaining =
vlib_process_wait_for_event_or_clock (vm, poll_time_remaining);
event_type = vlib_process_get_events (vm, &event_data);
switch (event_type) {
case ~0: /* no events => timeout */
break;
/*
* $$$$ FIXME: add cases / handlers for each event type
*/
case EVENT1:
for (i = 0; i < vec_len (event_data); i++)
handle_event1 (mm, event_data[i]);
break;
case EVENT2:
for (i = 0; i < vec_len (event_data); i++)
handle_event2 (vm, event_data[i]);
break;
/* ... and so forth for each event type */
default:
/* This should never happen... */
clib_warning (\"BUG: unhandled event type %d\", event_type);
break;
}
if (event_data)
_vec_len (event_data) = 0;
/* Timer expired, call periodic function */
if (vlib_process_suspend_time_is_zero (poll_time_remaining)) {
" node-name "_periodic (vm);
poll_time_remaining = " uc-node-name "_POLL_PERIOD;
}
}
return 0;
}
/*
* " node-name " periodic node declaration
*/
VLIB_REGISTER_NODE (" plugin-name "_periodic_node,static) = {
.function = " node-name "_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = \"" node-name "-process\",
};
/*
* To signal an event:
*
* vlib_process_signal_event (vm, " node-name "_node.index, EVENTn, datum);
*
*/
")
|
