#include <lttng-events.h>
#include <lttng-tracer-core.h>
+#define __LTTNG_NULL_STRING "(null)"
+
/*
* Macro declarations used for all stages.
*/
max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \
else \
__event_len += __dynamic_len[__dynamic_len_idx++] = \
- strlen(_src) + 1;
+ strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1;
#undef TP_PROTO
#define TP_PROTO(...) __VA_ARGS__
#undef _ctf_string
#define _ctf_string(_item, _src, _user, _nowrite) \
{ \
- const void *__ctf_tmp_ptr = (_src); \
+ const void *__ctf_tmp_ptr = \
+ ((_src) ? (_src) : __LTTNG_NULL_STRING); \
memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \
__stack_data += sizeof(void *); \
}
#undef _ctf_string
#define _ctf_string(_item, _src, _user, _nowrite) \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \
if (_user) { \
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \
__chan->ops->event_strcpy_from_user(&__ctx, _src, \
__get_dynamic_len(dest)); \
} else { \
- __chan->ops->event_strcpy(&__ctx, _src, \
+ const char *__ctf_tmp_string = \
+ ((_src) ? (_src) : __LTTNG_NULL_STRING); \
+ lib_ring_buffer_align_ctx(&__ctx, \
+ lttng_alignof(*__ctf_tmp_string)); \
+ __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \
__get_dynamic_len(dest)); \
}