Tracepoint API namespacing '__LTTNG_UST_NULL_STRING'

The ABI bump gives us the opportunity to namespace all public symbols
under the 'lttng_ust_' prefix. Namespace all API symbols and macros
under 'lttng_ust_' / 'LTTNG_UST_' and add compat macros to keep
compatibility with the previous API.

Change-Id: I1517464f5c50b890bdcf2825d10be1690a699eac
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/include/lttng/ust-tracepoint-event.h b/include/lttng/ust-tracepoint-event.h
index 8ba095bd223afb267a9b2d65044369a383dc91bb..f4fc0db75af2d6ffaffa42b67a22b9d360c1d60f 100644 (file)
--- a/include/lttng/ust-tracepoint-event.h
+++ b/include/lttng/ust-tracepoint-event.h
@@ -18,7 +18,7 @@
 #include <lttng/ust-api-compat.h>
 #include <string.h>
 
-#define __LTTNG_UST_NULL_STRING        "(null)"
+#define LTTNG_UST__NULL_STRING "(null)"
 
 #undef tp_list_for_each_entry_rcu
 #define tp_list_for_each_entry_rcu(pos, head, member)  \
@@ -449,7 +449,7 @@ static void __event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO
 #undef _ctf_string
 #define _ctf_string(_item, _src, _nowrite)                                    \
        __event_len += __dynamic_len[__dynamic_len_idx++] =                    \
-               strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1;
+               strlen((_src) ? (_src) : LTTNG_UST__NULL_STRING) + 1;
 
 #undef _ctf_unused
 #define _ctf_unused(_src)                                                      \
@@ -615,7 +615,7 @@ size_t __event_get_size__##_provider##___##_name(                         \
 #define _ctf_string(_item, _src, _nowrite)                                    \
        {                                                                      \
                const void *__ctf_tmp_ptr =                                    \
-                       ((_src) ? (_src) : __LTTNG_UST_NULL_STRING);           \
+                       ((_src) ? (_src) : LTTNG_UST__NULL_STRING);            \
                memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *));          \
                __stack_data += sizeof(void *);                                \
        }
@@ -776,7 +776,7 @@ size_t __event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(_args
 #define _ctf_string(_item, _src, _nowrite)                                     \
        {                                                                       \
                const char *__ctf_tmp_string =                                  \
-                       ((_src) ? (_src) : __LTTNG_UST_NULL_STRING);            \
+                       ((_src) ? (_src) : LTTNG_UST__NULL_STRING);             \
                __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string,             \
                        __get_dynamic_len(dest));                               \
        }