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37 #include <sys/queue.h>
39 #include <rte_common.h>
40 #include <rte_memory.h>
41 #include <rte_memzone.h>
42 #include <rte_per_lcore.h>
43 #include <rte_launch.h>
44 #include <rte_atomic.h>
45 #include <rte_rwlock.h>
46 #include <rte_tailq.h>
48 #include <rte_per_lcore.h>
49 #include <rte_lcore.h>
50 #include <rte_cycles.h>
58 * - There is a global rwlock and a table of rwlocks (one per lcore).
60 * - The test function takes all of these locks and launches the
61 * ``test_rwlock_per_core()`` function on each core (except the master).
63 * - The function takes the global write lock, display something,
64 * then releases the global lock.
65 * - Then, it takes the per-lcore write lock, display something, and
66 * releases the per-core lock.
67 * - Finally, a read lock is taken during 100 ms, then released.
69 * - The main function unlocks the per-lcore locks sequentially and
70 * waits between each lock. This triggers the display of a message
71 * for each core, in the correct order.
73 * Then, it tries to take the global write lock and display the last
74 * message. The autotest script checks that the message order is correct.
77 static rte_rwlock_t sl;
78 static rte_rwlock_t sl_tab[RTE_MAX_LCORE];
81 test_rwlock_per_core(__attribute__((unused)) void *arg)
83 rte_rwlock_write_lock(&sl);
84 printf("Global write lock taken on core %u\n", rte_lcore_id());
85 rte_rwlock_write_unlock(&sl);
87 rte_rwlock_write_lock(&sl_tab[rte_lcore_id()]);
88 printf("Hello from core %u !\n", rte_lcore_id());
89 rte_rwlock_write_unlock(&sl_tab[rte_lcore_id()]);
91 rte_rwlock_read_lock(&sl);
92 printf("Global read lock taken on core %u\n", rte_lcore_id());
94 printf("Release global read lock on core %u\n", rte_lcore_id());
95 rte_rwlock_read_unlock(&sl);
105 rte_rwlock_init(&sl);
106 for (i=0; i<RTE_MAX_LCORE; i++)
107 rte_rwlock_init(&sl_tab[i]);
109 rte_rwlock_write_lock(&sl);
111 RTE_LCORE_FOREACH_SLAVE(i) {
112 rte_rwlock_write_lock(&sl_tab[i]);
113 rte_eal_remote_launch(test_rwlock_per_core, NULL, i);
116 rte_rwlock_write_unlock(&sl);
118 RTE_LCORE_FOREACH_SLAVE(i) {
119 rte_rwlock_write_unlock(&sl_tab[i]);
123 rte_rwlock_write_lock(&sl);
124 /* this message should be the last message of test */
125 printf("Global write lock taken on master core %u\n", rte_lcore_id());
126 rte_rwlock_write_unlock(&sl);
128 rte_eal_mp_wait_lcore();
133 static struct test_command rwlock_cmd = {
134 .command = "rwlock_autotest",
135 .callback = test_rwlock,
137 REGISTER_TEST_COMMAND(rwlock_cmd);