X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-field-utils.c;h=cef0261564c9034beef23846bd9d23b1521e4144;hb=0e7b45661dabc88c533f4f322615217410ce68db;hp=954581d3ce85cf6dfdfb3c53fa06bd82f6865c20;hpb=3fd9c5c21dc94a9182065664e19fc0d4dd5ead71;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/ust-field-utils.c b/src/bin/lttng-sessiond/ust-field-utils.c
index 954581d3c..cef026156 100644
--- a/src/bin/lttng-sessiond/ust-field-utils.c
+++ b/src/bin/lttng-sessiond/ust-field-utils.c
@@ -278,3 +278,33 @@ int match_ustctl_field(const struct ustctl_field *first,
 no_match:
 	return false;
 }
+
+/*
+ * Compare two arrays of UST fields.
+ * Return true if both arrays have identical field definitions, false otherwise.
+ */
+bool match_lttng_ust_ctl_field_array(const struct ustctl_field *first,
+		size_t nr_first,
+		const struct ustctl_field *second,
+		size_t nr_second)
+{
+	size_t i;
+	const size_t nr_fields = nr_first;
+
+	/* Compare the array lengths. */
+	if (nr_first != nr_second) {
+		goto no_match;
+	}
+
+	/* Compare each field individually. */
+	for (i = 0; i < nr_fields; i++) {
+		if (!match_ustctl_field(&first[i], &second[i])) {
+			goto no_match;
+		}
+	}
+
+	return true;
+
+no_match:
+	return false;
+}