From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
Add a callback "copy" to the type that gets called when a copy is done.
This is can be used to copy dynamic types. Otherwise the old one is just
going to be released.
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
include/traceeval-hist.h | 5 +++++
src/histograms.c | 3 +++
2 files changed, 8 insertions(+)
diff --git a/include/traceeval-hist.h b/include/traceeval-hist.h
index e8a7981ac2c0..a87f39afc050 100644
--- a/include/traceeval-hist.h
+++ b/include/traceeval-hist.h
@@ -82,6 +82,10 @@ typedef int (*traceeval_data_hash_fn)(struct traceeval *teval,
const struct traceeval_type *type,
const union traceeval_data *data);
+typedef int (*traceeval_data_copy_fn)(const struct traceeval_type *type,
+ union traceeval_data *dst,
+ const union traceeval_data *src);
+
/*
* struct traceeval_type - Describes the type of a traceevent_data instance
* @type: The enum type that describes the traceeval_data
@@ -126,6 +130,7 @@ struct traceeval_type {
size_t id;
traceeval_data_release_fn release;
traceeval_data_cmp_fn cmp;
+ traceeval_data_copy_fn copy;
traceeval_data_hash_fn hash;
};
diff --git a/src/histograms.c b/src/histograms.c
index c4ff632b4f87..08d711239284 100644
--- a/src/histograms.c
+++ b/src/histograms.c
@@ -511,6 +511,9 @@ static int copy_traceeval_data(struct traceeval_type *type,
{
unsigned long long val;
+ if (type->copy)
+ return type->copy(type, dst, src);
+
*dst = *src;
switch(type->type) {
--
2.40.1
|