libust ABI: export streams

[lttng-ust.git] / include / lttng-ust-comm.h

diff --git a/include/lttng-ust-comm.h b/include/lttng-ust-comm.h
index b73657eca2f4dfe97ddaa74d2bb8c793277df147..d792074e3810eb5a0ed5e54428cdc4a10a27b4a7 100644 (file)
--- a/include/lttng-ust-comm.h
+++ b/include/lttng-ust-comm.h
@@ -30,6 +30,14 @@
 #include <lttng/lttng.h>
 #include <ust/lttng-ust-abi.h>
 
+/*
+ * Default timeout the application waits for the sessiond to send its
+ * "register done" command. Can be overridden with the environment
+ * variable "UST_REGISTER_TIMEOUT". Note that if the sessiond is not
+ * found, the application proceeds directly without any delay.
+ */
+#define LTTNG_UST_DEFAULT_CONSTRUCTOR_TIMEOUT_MS       3000
+
 #define LTTNG_RUNDIR                        "/var/run/lttng"
 
 /* Default unix socket path */
@@ -38,6 +46,9 @@
 #define DEFAULT_HOME_APPS_UNIX_SOCK         "%s/.apps-ltt-sessiond"
 #define DEFAULT_HOME_CLIENT_UNIX_SOCK       "%s/.client-ltt-sessiond"
 
+#define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH   "/lttng-ust-apps-wait"
+#define DEFAULT_HOME_APPS_WAIT_SHM_PATH     "/lttng-ust-apps-wait-%u"
+
 /* Queue size of listen(2) */
 #define MAX_LISTEN 10
 
@@ -115,6 +126,7 @@ struct lttcomm_ust_msg {
        union {
                struct lttng_ust_tracer_version version;
                struct lttng_ust_channel channel;
+               struct lttng_ust_stream stream;
                struct lttng_ust_event event;
                struct lttng_ust_context context;
        } u;
@@ -130,6 +142,9 @@ struct lttcomm_ust_reply {
        uint32_t ret_code;      /* enum enum lttcomm_return_code */
        uint32_t ret_val;       /* return value */
        union {
+               struct {
+                       uint64_t memory_map_size;
+               } stream;
        } u;
 };