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-rw-r--r--xlators/protocol/server/src/server-helpers.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/xlators/protocol/server/src/server-helpers.c b/xlators/protocol/server/src/server-helpers.c
index c11011a..76c0036 100644
--- a/xlators/protocol/server/src/server-helpers.c
+++ b/xlators/protocol/server/src/server-helpers.c
@@ -1092,3 +1092,327 @@ out:
return ret;
}
+
+int32_t
+gf_barrier_transmit (server_conf_t *conf, gf_barrier_payload_t *payload)
+{
+ gf_barrier_t *barrier = NULL;
+ int32_t ret = -1;
+ client_t *client = NULL;
+ gf_boolean_t lk_heal = _gf_false;
+ call_frame_t *frame = NULL;
+ server_state_t *state = NULL;
+
+ GF_VALIDATE_OR_GOTO ("barrier", conf, out);
+ GF_VALIDATE_OR_GOTO ("barrier", conf->barrier, out);
+ GF_VALIDATE_OR_GOTO ("barrier", payload, out);
+
+ barrier = conf->barrier;
+
+ frame = payload->frame;
+ if (frame) {
+ state = CALL_STATE (frame);
+ frame->local = NULL;
+ client = frame->root->client;
+ }
+ /* currently lk fops are not barrier'ed. This is reflecting code in
+ * server_submit_reply */
+ if (client)
+ lk_heal = ((server_conf_t *) client->this->private)->lk_heal;
+
+ ret = rpcsvc_submit_generic (payload->req, &payload->rsp, 1,
+ payload->payload, payload->payload_count,
+ payload->iobref);
+ iobuf_unref (payload->iob);
+ if (ret == -1) {
+ gf_log_callingfn ("", GF_LOG_ERROR, "Reply submission failed");
+ if (frame && client && !lk_heal) {
+ server_connection_cleanup (frame->this, client,
+ INTERNAL_LOCKS | POSIX_LOCKS);
+ } else {
+ /* TODO: Failure of open(dir), create, inodelk, entrylk
+ or lk fops send failure must be handled specially. */
+ }
+ goto ret;
+ }
+
+ ret = 0;
+ret:
+ if (state) {
+ free_state (state);
+ }
+
+ if (frame) {
+ gf_client_unref (client);
+ STACK_DESTROY (frame->root);
+ }
+
+ if (payload->free_iobref) {
+ iobref_unref (payload->iobref);
+ }
+out:
+ return ret;
+}
+
+gf_barrier_payload_t *
+gf_barrier_dequeue (gf_barrier_t *barrier)
+{
+ gf_barrier_payload_t *payload = NULL;
+
+ if (!barrier || list_empty (&barrier->queue))
+ return NULL;
+
+ payload = list_entry (barrier->queue.next,
+ gf_barrier_payload_t, list);
+ if (payload) {
+ list_del_init (&payload->list);
+ barrier->cur_size--;
+ }
+
+ return payload;
+}
+
+
+void*
+gf_barrier_dequeue_start (void *data)
+{
+ server_conf_t *conf = NULL;
+ gf_barrier_t *barrier = NULL;
+ gf_barrier_payload_t *payload = NULL;
+
+ conf = (server_conf_t *)data;
+ if (!conf || !conf->barrier)
+ return NULL;
+ barrier = conf->barrier;
+
+ LOCK (&barrier->lock);
+ {
+ while (barrier->cur_size) {
+ payload = gf_barrier_dequeue (barrier);
+ if (payload) {
+ if (gf_barrier_transmit (conf, payload)) {
+ gf_log ("server", GF_LOG_WARNING,
+ "Failed to transmit");
+ }
+ GF_FREE (payload);
+ }
+ }
+ }
+ UNLOCK (&barrier->lock);
+ return NULL;
+}
+
+void
+gf_barrier_timeout (void *data)
+{
+ server_conf_t *conf = NULL;
+ gf_barrier_t *barrier = NULL;
+ gf_boolean_t need_dequeue = _gf_false;
+
+ conf = (server_conf_t *)data;
+ if (!conf || !conf->barrier)
+ goto out;
+ barrier = conf->barrier;
+
+ gf_log ("", GF_LOG_INFO, "barrier timed-out");
+ LOCK (&barrier->lock);
+ {
+ need_dequeue = barrier->on;
+ barrier->on = _gf_false;
+ }
+ UNLOCK (&barrier->lock);
+
+ if (need_dequeue == _gf_true)
+ gf_barrier_dequeue_start (data);
+out:
+ return;
+}
+
+
+int32_t
+gf_barrier_start (xlator_t *this)
+{
+ server_conf_t *conf = NULL;
+ gf_barrier_t *barrier = NULL;
+ int32_t ret = -1;
+ struct timespec time = {0,};
+
+ conf = this->private;
+
+ GF_VALIDATE_OR_GOTO ("server", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, conf, out);
+ GF_VALIDATE_OR_GOTO (this->name, conf->barrier, out);
+
+ barrier = conf->barrier;
+
+ gf_log (this->name, GF_LOG_INFO, "barrier start called");
+ LOCK (&barrier->lock);
+ {
+ /* if barrier is on, reset timer */
+ if (barrier->on == _gf_true) {
+ ret = gf_timer_call_cancel (this->ctx, barrier->timer);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to "
+ "unset timer, failing barrier start");
+ goto unlock;
+ }
+ }
+
+ barrier->on = _gf_true;
+ time.tv_sec = barrier->time_out;
+ time.tv_nsec = 0;
+
+ barrier->timer = gf_timer_call_after (this->ctx, time,
+ gf_barrier_timeout,
+ (void *)conf);
+ if (!barrier->timer) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to set "
+ "timer, failing barrier start");
+ barrier->on = _gf_false;
+ }
+ }
+unlock:
+ UNLOCK (&barrier->lock);
+
+ ret = 0;
+out:
+ return ret;
+}
+
+int32_t
+gf_barrier_stop (xlator_t *this)
+{
+ server_conf_t *conf = NULL;
+ gf_barrier_t *barrier = NULL;
+ int32_t ret = -1;
+ gf_boolean_t need_dequeue = _gf_false;
+
+ conf = this->private;
+
+ GF_VALIDATE_OR_GOTO ("server", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, conf, out);
+ GF_VALIDATE_OR_GOTO (this->name, conf->barrier, out);
+
+ barrier = conf->barrier;
+
+ gf_log (this->name, GF_LOG_INFO, "barrier stop called");
+ LOCK (&barrier->lock);
+ {
+ need_dequeue = barrier->on;
+ barrier->on = _gf_false;
+ }
+ UNLOCK (&barrier->lock);
+
+ if (need_dequeue == _gf_true) {
+ gf_timer_call_cancel (this->ctx, barrier->timer);
+ ret = gf_thread_create (&conf->barrier_th, NULL,
+ gf_barrier_dequeue_start,
+ conf);
+ if (ret) {
+ gf_log (this->name, GF_LOG_CRITICAL,
+ "Failed to start un-barriering");
+ goto out;
+ }
+ }
+ ret = 0;
+out:
+ return ret;
+}
+
+int32_t
+gf_barrier_fops_configure (xlator_t *this, gf_barrier_t *barrier, char *str)
+{
+ int32_t ret = -1;
+ char *dup_str = NULL;
+ char *str_tok = NULL;
+ char *save_ptr = NULL;
+ uint64_t fops = 0;
+
+ /* by defaul fsync & flush needs to be barriered */
+
+ fops |= 1 << GFS3_OP_FSYNC;
+ fops |= 1 << GFS3_OP_FLUSH;
+
+ if (!str)
+ goto done;
+
+ dup_str = gf_strdup (str);
+ if (!dup_str)
+ goto done;
+
+ str_tok = strtok_r (dup_str, ",", &save_ptr);
+ if (!str_tok)
+ goto done;
+
+ fops = 0;
+ while (str_tok) {
+ if (!strcmp(str_tok, "writev")) {
+ fops |= ((uint64_t)1 << GFS3_OP_WRITE);
+ } else if (!strcmp(str_tok, "fsync")) {
+ fops |= ((uint64_t)1 << GFS3_OP_FSYNC);
+ } else if (!strcmp(str_tok, "read")) {
+ fops |= ((uint64_t)1 << GFS3_OP_READ);
+ } else if (!strcmp(str_tok, "rename")) {
+ fops |= ((uint64_t)1 << GFS3_OP_RENAME);
+ } else if (!strcmp(str_tok, "flush")) {
+ fops |= ((uint64_t)1 << GFS3_OP_FLUSH);
+ } else if (!strcmp(str_tok, "ftruncate")) {
+ fops |= ((uint64_t)1 << GFS3_OP_FTRUNCATE);
+ } else if (!strcmp(str_tok, "fallocate")) {
+ fops |= ((uint64_t)1 << GFS3_OP_FALLOCATE);
+ } else if (!strcmp(str_tok, "rmdir")) {
+ fops |= ((uint64_t)1 << GFS3_OP_RMDIR);
+ } else {
+ gf_log ("barrier", GF_LOG_ERROR,
+ "Invalid barrier fop %s", str_tok);
+ }
+
+ str_tok = strtok_r (NULL, ",", &save_ptr);
+ }
+done:
+ LOCK (&barrier->lock);
+ {
+ barrier->fops = fops;
+ }
+ UNLOCK (&barrier->lock);
+ ret = 0;
+
+ GF_FREE (dup_str);
+ return ret;
+}
+
+void
+gf_barrier_enqueue (gf_barrier_t *barrier, gf_barrier_payload_t *payload)
+{
+ list_add_tail (&payload->list, &barrier->queue);
+ barrier->cur_size++;
+}
+
+gf_barrier_payload_t *
+gf_barrier_payload (rpcsvc_request_t *req, struct iovec *rsp,
+ call_frame_t *frame, struct iovec *payload_orig,
+ int payloadcount, struct iobref *iobref,
+ struct iobuf *iob, gf_boolean_t free_iobref)
+{
+ gf_barrier_payload_t *payload = NULL;
+
+ if (!rsp)
+ return NULL;
+
+ payload = GF_CALLOC (1, sizeof (*payload),1);
+ if (!payload)
+ return NULL;
+
+ INIT_LIST_HEAD (&payload->list);
+
+ payload->req = req;
+ memcpy (&payload->rsp, rsp, sizeof (struct iovec));
+ payload->frame = frame;
+ payload->payload = payload_orig;
+ payload->payload_count = payloadcount;
+ payload->iobref = iobref;
+ payload->iob = iob;
+ payload->free_iobref = free_iobref;
+
+ return payload;
+}