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35 * This sample application is a simple multi-process application which
36 * demostrates sharing of queues and memory pools between processes, and
37 * using those queues/pools for communication between the processes.
39 * Application is designed to run with two processes, a primary and a
40 * secondary, and each accepts commands on the commandline, the most
41 * important of which is "send", which just sends a string to the other
53 #include <sys/queue.h>
55 #include <rte_common.h>
56 #include <rte_memory.h>
57 #include <rte_launch.h>
59 #include <rte_per_lcore.h>
60 #include <rte_lcore.h>
61 #include <rte_debug.h>
62 #include <rte_atomic.h>
63 #include <rte_branch_prediction.h>
66 #include <rte_mempool.h>
67 #include <cmdline_rdline.h>
68 #include <cmdline_parse.h>
69 #include <cmdline_parse_string.h>
70 #include <cmdline_socket.h>
72 #include "mp_commands.h"
74 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
76 static const char *_MSG_POOL = "MSG_POOL";
77 static const char *_SEC_2_PRI = "SEC_2_PRI";
78 static const char *_PRI_2_SEC = "PRI_2_SEC";
80 struct rte_ring *send_ring, *recv_ring;
81 struct rte_mempool *message_pool;
82 volatile int quit = 0;
85 lcore_recv(__attribute__((unused)) void *arg)
87 unsigned lcore_id = rte_lcore_id();
89 printf("Starting core %u\n", lcore_id);
92 if (rte_ring_dequeue(recv_ring, &msg) < 0){
96 printf("core %u: Received '%s'\n", lcore_id, (char *)msg);
97 rte_mempool_put(message_pool, msg);
104 main(int argc, char **argv)
106 const unsigned flags = 0;
107 const unsigned ring_size = 64;
108 const unsigned pool_size = 1024;
109 const unsigned pool_cache = 32;
110 const unsigned priv_data_sz = 0;
115 ret = rte_eal_init(argc, argv);
117 rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
119 if (rte_eal_process_type() == RTE_PROC_PRIMARY){
120 send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags);
121 recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags);
122 message_pool = rte_mempool_create(_MSG_POOL, pool_size,
123 STR_TOKEN_SIZE, pool_cache, priv_data_sz,
124 NULL, NULL, NULL, NULL,
125 rte_socket_id(), flags);
127 recv_ring = rte_ring_lookup(_PRI_2_SEC);
128 send_ring = rte_ring_lookup(_SEC_2_PRI);
129 message_pool = rte_mempool_lookup(_MSG_POOL);
131 if (send_ring == NULL)
132 rte_exit(EXIT_FAILURE, "Problem getting sending ring\n");
133 if (recv_ring == NULL)
134 rte_exit(EXIT_FAILURE, "Problem getting receiving ring\n");
135 if (message_pool == NULL)
136 rte_exit(EXIT_FAILURE, "Problem getting message pool\n");
138 RTE_LOG(INFO, APP, "Finished Process Init.\n");
140 /* call lcore_recv() on every slave lcore */
141 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
142 rte_eal_remote_launch(lcore_recv, NULL, lcore_id);
145 /* call cmd prompt on master lcore */
146 struct cmdline *cl = cmdline_stdin_new(simple_mp_ctx, "\nsimple_mp > ");
148 rte_exit(EXIT_FAILURE, "Cannot create cmdline instance\n");
149 cmdline_interact(cl);
150 cmdline_stdin_exit(cl);
152 rte_eal_mp_wait_lcore();