goto error;
}
- DBG3("Relayd sending command %d", cmd);
+ DBG3("Relayd sending command %d of size %" PRIu64, cmd, buf_size);
error:
free(buf);
{
int ret;
- DBG3("Relayd waiting for reply...");
+ DBG3("Relayd waiting for reply of size %ld", size);
ret = sock->ops->recvmsg(sock, data, size, 0);
if (ret < 0) {
return ret;
}
-#if 0
-/*
- * Create session on the relayd.
- *
- * On error, return ret_code negative value else return 0.
- */
-int relayd_create_session(struct lttcomm_sock *sock, const char *hostname,
- const char *session_name)
-{
- int ret;
- struct lttcomm_relayd_create_session msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- assert(sock);
- assert(hostname);
- assert(session_name);
-
- DBG("Relayd creating session for hostname %s and session name %s",
- hostname, session_name);
-
- strncpy(msg.hostname, hostname, sizeof(msg.hostname));
- strncpy(msg.session_name, session_name, sizeof(msg.session_name));
-
- /* Send command */
- ret = send_command(sock, RELAYD_CREATE_SESSION, (void *) &msg,
- sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
- ret = -reply.ret_code;
- } else {
- /* Success */
- ret = 0;
- }
-
- DBG2("Relayd created session for %s", session_name);
-
-error:
- return ret;
-}
-#endif
-
/*
* Add stream on the relayd and assign stream handle to the stream_id argument.
*
goto error;
}
- /* Recevie response */
+ /* Waiting for reply */
ret = recv_reply(sock, (void *) &reply, sizeof(reply));
if (ret < 0) {
goto error;
reply.ret_code = be32toh(reply.ret_code);
/* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
+ if (reply.ret_code != LTTNG_OK) {
ret = -reply.ret_code;
ERR("Relayd add stream replied error %d", ret);
} else {
return ret;
}
-#if 0
-/*
- * Start data command on the relayd.
- *
- * On success return 0 else return ret_code negative value.
- */
-int relayd_start_data(struct lttcomm_sock *sock)
-{
- int ret;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- assert(sock);
-
- DBG("Relayd start data command");
-
- /* Send command */
- ret = send_command(sock, RELAYD_START_DATA, NULL, 0, 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
- ret = -reply.ret_code;
- } else {
- /* Success */
- ret = 0;
- }
-
-error:
- return ret;
-}
-#endif
-
/*
* Add stream on the relayd and assign stream handle to the stream_id argument.
*
/*
* After that call, the metadata data MUST be sent to the relayd so the
* receive size on the other end matches the len of the metadata packet
- * header.
+ * header. This is why we don't wait for a reply here.
*/
error:
assert(sock);
assert(hdr);
- DBG3("Relayd sending data header...");
+ DBG3("Relayd sending data header of size %ld", size);
/* Again, safety net */
if (size == 0) {
reply.ret_code = be32toh(reply.ret_code);
/* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
+ if (reply.ret_code != LTTNG_OK) {
ret = -reply.ret_code;
ERR("Relayd close stream replied error %d", ret);
} else {
error:
return ret;
}
+
+/*
+ * Check for data availability for a given stream id.
+ *
+ * Return 0 if NOT available, 1 if so and a negative value on error.
+ */
+int relayd_data_available(struct lttcomm_sock *sock, uint64_t stream_id,
+ uint64_t last_net_seq_num)
+{
+ int ret;
+ struct lttcomm_relayd_data_available msg;
+ struct lttcomm_relayd_generic_reply reply;
+
+ /* Code flow error. Safety net. */
+ assert(sock);
+
+ DBG("Relayd data available for stream id %" PRIu64, stream_id);
+
+ msg.stream_id = htobe64(stream_id);
+ msg.last_net_seq_num = htobe64(last_net_seq_num);
+
+ /* Send command */
+ ret = send_command(sock, RELAYD_DATA_AVAILABLE, (void *) &msg,
+ sizeof(msg), 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Recevie response */
+ ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code >= LTTNG_OK) {
+ ret = -reply.ret_code;
+ ERR("Relayd data available replied error %d", ret);
+ }
+
+ /* At this point, the ret code is either 1 or 0 */
+ ret = reply.ret_code;
+
+ DBG("Relayd data is %s available for stream id %" PRIu64,
+ ret == 1 ? "" : "NOT", stream_id);
+
+error:
+ return ret;
+}
+
+/*
+ * Check on the relayd side for a quiescent state on the control socket.
+ */
+int relayd_quiescent_control(struct lttcomm_sock *sock)
+{
+ int ret;
+ struct lttcomm_relayd_generic_reply reply;
+
+ /* Code flow error. Safety net. */
+ assert(sock);
+
+ DBG("Relayd checking quiescent control state");
+
+ /* Send command */
+ ret = send_command(sock, RELAYD_QUIESCENT_CONTROL, NULL, 0, 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Recevie response */
+ ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -reply.ret_code;
+ ERR("Relayd quiescent control replied error %d", ret);
+ goto error;
+ }
+
+ /* Control socket is quiescent */
+ return 1;
+
+error:
+ return ret;
+}
projects / lttng-tools.git / blobdiff