Home | History | Annotate | Line # | Download | only in wfstack 
      1 // SPDX-FileCopyrightText: 2013 Mathieu Desnoyers <mathieu.desnoyers (at) efficios.com>
      2 //
      3 // SPDX-License-Identifier: MIT
      4 
      5 /*
      6  * This example shows how to push nodes into a wfstack.
      7  */
      8 
      9 #include <stdio.h>
     10 #include <stdlib.h>
     11 
     12 #include <urcu/wfstack.h>	/* Wait-free stack */
     13 #include <urcu/compiler.h>	/* For CAA_ARRAY_SIZE */
     14 
     15 /*
     16  * Nodes populated into the stack.
     17  */
     18 struct mynode {
     19 	int value;			/* Node content */
     20 	struct cds_wfs_node node;	/* Chaining in stack */
     21 };
     22 
     23 int main(void)
     24 {
     25 	int values[] = { -5, 42, 36, 24, };
     26 	struct cds_wfs_stack mystack;	/* Stack */
     27 	unsigned int i;
     28 	int ret = 0;
     29 	struct cds_wfs_node *snode;
     30 	struct cds_wfs_head *shead;
     31 
     32 	cds_wfs_init(&mystack);
     33 
     34 	/*
     35 	 * Push nodes.
     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_wfs_node_init(&node->node);
     47 		node->value = values[i];
     48 		cds_wfs_push(&mystack, &node->node);
     49 	}
     50 
     51 	/*
     52 	 * Show the stack content, iterate in reverse order of push,
     53 	 * from newest to oldest.
     54 	 */
     55 	printf("mystack content:");
     56 	shead = cds_wfs_pop_all_blocking(&mystack);
     57 	cds_wfs_for_each_blocking(shead, snode) {
     58 		struct mynode *node =
     59 			caa_container_of(snode, struct mynode, node);
     60 		printf(" %d", node->value);
     61 	}
     62 	printf("\n");
     63 end:
     64 	cds_wfs_destroy(&mystack);
     65 	return ret;
     66 }
     67