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Diffstat (limited to 'trace2/tr2_tgt_event.c')
-rw-r--r--trace2/tr2_tgt_event.c36
1 files changed, 24 insertions, 12 deletions
diff --git a/trace2/tr2_tgt_event.c b/trace2/tr2_tgt_event.c
index c2852d1bd2..6353e8ad91 100644
--- a/trace2/tr2_tgt_event.c
+++ b/trace2/tr2_tgt_event.c
@@ -10,16 +10,17 @@
#include "trace2/tr2_tgt.h"
#include "trace2/tr2_tls.h"
-static struct tr2_dst tr2dst_event = { TR2_SYSENV_EVENT, 0, 0, 0 };
+static struct tr2_dst tr2dst_event = { TR2_SYSENV_EVENT, 0, 0, 0, 0 };
/*
- * The version number of the JSON data generated by the EVENT target
- * in this source file. Update this if you make a significant change
- * to the JSON fields or message structure. You probably do not need
- * to update this if you just add another call to one of the existing
- * TRACE2 API methods.
+ * The version number of the JSON data generated by the EVENT target in this
+ * source file. The version should be incremented if new event types are added,
+ * if existing fields are removed, or if there are significant changes in
+ * interpretation of existing events or fields. Smaller changes, such as adding
+ * a new field to an existing event, do not require an increment to the EVENT
+ * format version.
*/
-#define TR2_EVENT_VERSION "1"
+#define TR2_EVENT_VERSION "2"
/*
* Region nesting limit for messages written to the event target.
@@ -107,6 +108,19 @@ static void event_fmt_prepare(const char *event_name, const char *file,
jw_object_intmax(jw, "repo", repo->trace2_repo_id);
}
+static void fn_too_many_files_fl(const char *file, int line)
+{
+ const char *event_name = "too_many_files";
+ struct json_writer jw = JSON_WRITER_INIT;
+
+ jw_object_begin(&jw, 0);
+ event_fmt_prepare(event_name, file, line, NULL, &jw);
+ jw_end(&jw);
+
+ tr2_dst_write_line(&tr2dst_event, &jw.json);
+ jw_release(&jw);
+}
+
static void fn_version_fl(const char *file, int line)
{
const char *event_name = "version";
@@ -120,6 +134,9 @@ static void fn_version_fl(const char *file, int line)
tr2_dst_write_line(&tr2dst_event, &jw.json);
jw_release(&jw);
+
+ if (tr2dst_event.too_many_files)
+ fn_too_many_files_fl(file, line);
}
static void fn_start_fl(const char *file, int line,
@@ -205,11 +222,6 @@ static void maybe_add_string_va(struct json_writer *jw, const char *field_name,
strbuf_release(&buf);
return;
}
-
- if (fmt && *fmt) {
- jw_object_string(jw, field_name, fmt);
- return;
- }
}
static void fn_error_va_fl(const char *file, int line, const char *fmt,