Commit | Line | Data |
---|---|---|
1c87adb3 MJ |
1 | // SPDX-FileCopyrightText: 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2 | // | |
3 | // SPDX-License-Identifier: MIT | |
4 | ||
48337075 | 5 | /* |
48337075 MD |
6 | * This example shows how to enqueue nodes into a wfcqueue. |
7 | */ | |
8 | ||
9 | #include <stdio.h> | |
10 | #include <stdlib.h> | |
11 | ||
12 | #include <urcu/wfcqueue.h> /* Wait-free concurrent queue */ | |
13 | #include <urcu/compiler.h> /* For CAA_ARRAY_SIZE */ | |
14 | ||
15 | /* | |
16 | * Nodes populated into the queue. | |
17 | */ | |
18 | struct mynode { | |
19 | int value; /* Node content */ | |
20 | struct cds_wfcq_node node; /* Chaining in queue */ | |
21 | }; | |
22 | ||
70469b43 | 23 | int main(void) |
48337075 MD |
24 | { |
25 | int values[] = { -5, 42, 36, 24, }; | |
26 | struct cds_wfcq_head myqueue_head; /* Queue head */ | |
27 | struct cds_wfcq_tail myqueue_tail; /* Queue tail */ | |
28 | unsigned int i; | |
29 | int ret = 0; | |
30 | struct cds_wfcq_node *qnode; | |
31 | ||
32 | cds_wfcq_init(&myqueue_head, &myqueue_tail); | |
33 | ||
34 | /* | |
8f09dfa7 | 35 | * Enqueue nodes. |
48337075 MD |
36 | */ |
37 | for (i = 0; i < CAA_ARRAY_SIZE(values); i++) { | |
38 | struct mynode *node; | |
39 | ||
40 | node = malloc(sizeof(*node)); | |
41 | if (!node) { | |
42 | ret = -1; | |
43 | goto end; | |
44 | } | |
45 | ||
46 | cds_wfcq_node_init(&node->node); | |
47 | node->value = values[i]; | |
48 | cds_wfcq_enqueue(&myqueue_head, &myqueue_tail, | |
49 | &node->node); | |
50 | } | |
51 | ||
52 | /* | |
5815656a MD |
53 | * Show the queue content, iterate in the same order nodes were |
54 | * enqueued, from oldest to newest. | |
48337075 MD |
55 | */ |
56 | printf("myqueue content:"); | |
57 | __cds_wfcq_for_each_blocking(&myqueue_head, &myqueue_tail, qnode) { | |
58 | struct mynode *node = | |
59 | caa_container_of(qnode, struct mynode, node); | |
60 | printf(" %d", node->value); | |
61 | } | |
62 | printf("\n"); | |
63 | end: | |
6acc6ad4 | 64 | cds_wfcq_destroy(&myqueue_head, &myqueue_tail); |
48337075 MD |
65 | return ret; |
66 | } |