event: The reactor now contains a list of threads
It iterates over the list and polls each one. However, in practice the list still contains just one thread for now. Change-Id: I9bac7eb5ebf9b4edc6409caaf26747470b65e336 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/c/440763 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
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@ -53,10 +53,17 @@ enum spdk_reactor_state {
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SPDK_REACTOR_STATE_SHUTDOWN = 4,
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};
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struct spdk_lw_thread {
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TAILQ_ENTRY(spdk_lw_thread) link;
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};
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struct spdk_reactor {
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/* Logical core number for this reactor. */
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uint32_t lcore;
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/* Lightweight threads running on this reactor */
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TAILQ_HEAD(, spdk_lw_thread) threads;
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/* Poller for get the rusage for the reactor. */
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struct spdk_poller *rusage_poller;
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@ -204,29 +211,47 @@ static int
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_spdk_reactor_run(void *arg)
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{
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struct spdk_reactor *reactor = arg;
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struct spdk_thread *thread;
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struct spdk_thread *orig_thread, *thread;
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uint64_t last_rusage = 0;
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struct spdk_lw_thread *lw_thread, *tmp;
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char thread_name[32];
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snprintf(thread_name, sizeof(thread_name), "reactor_%u", reactor->lcore);
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thread = spdk_thread_create(thread_name);
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if (!thread) {
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orig_thread = spdk_thread_create(thread_name);
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if (!orig_thread) {
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return -1;
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}
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lw_thread = (struct spdk_lw_thread *)spdk_thread_get_ctx(orig_thread);
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if (!lw_thread) {
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spdk_thread_exit(orig_thread);
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return -ENOMEM;
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}
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TAILQ_INSERT_TAIL(&reactor->threads, lw_thread, link);
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SPDK_NOTICELOG("Reactor started on core %u\n", reactor->lcore);
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while (1) {
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_spdk_event_queue_run_batch(reactor, thread);
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uint64_t now;
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spdk_thread_poll(thread, 0, 0);
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/* For each loop through the reactor, capture the time. This time
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* is used for all threads. */
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now = spdk_get_ticks();
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TAILQ_FOREACH_SAFE(lw_thread, &reactor->threads, link, tmp) {
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thread = spdk_thread_get_from_ctx(lw_thread);
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_spdk_event_queue_run_batch(reactor, thread);
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spdk_thread_poll(thread, 0, now);
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}
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if (g_reactor_state != SPDK_REACTOR_STATE_RUNNING) {
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break;
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}
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if (g_context_switch_monitor_enabled) {
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uint64_t now = spdk_get_ticks();
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if ((last_rusage + CONTEXT_SWITCH_MONITOR_PERIOD) < now) {
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get_rusage(reactor);
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last_rusage = now;
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@ -234,6 +259,12 @@ _spdk_reactor_run(void *arg)
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}
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}
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lw_thread = spdk_thread_get_ctx(orig_thread);
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TAILQ_REMOVE(&reactor->threads, lw_thread, link);
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assert(TAILQ_EMPTY(&reactor->threads));
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spdk_thread_exit(orig_thread);
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return 0;
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}
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@ -242,6 +273,8 @@ spdk_reactor_construct(struct spdk_reactor *reactor, uint32_t lcore)
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{
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reactor->lcore = lcore;
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TAILQ_INIT(&reactor->threads);
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reactor->events = spdk_ring_create(SPDK_RING_TYPE_MP_SC, 65536, SPDK_ENV_SOCKET_ID_ANY);
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assert(reactor->events != NULL);
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}
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@ -343,7 +376,7 @@ spdk_reactors_init(void)
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memset(g_reactors, 0, (last_core + 1) * sizeof(struct spdk_reactor));
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spdk_thread_lib_init(NULL, 0);
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spdk_thread_lib_init(NULL, sizeof(struct spdk_lw_thread));
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SPDK_ENV_FOREACH_CORE(i) {
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reactor = spdk_reactor_get(i);
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