X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ffield.hpp;h=dec5b103222008200b7adbcb8a019fa2ae3dbd3d;hp=2a1bcf35bf8002d5eec1a447fbe48b611d8eb345;hb=6e01cdc6c6e9cd18d99e8898fa3df41911388e8e;hpb=eda1aa02582ba8af1f30d40f131f4a32d2b372ab

diff --git a/src/bin/lttng-sessiond/field.hpp b/src/bin/lttng-sessiond/field.hpp
index 2a1bcf35b..dec5b1032 100644
--- a/src/bin/lttng-sessiond/field.hpp
+++ b/src/bin/lttng-sessiond/field.hpp
@@ -8,13 +8,15 @@
 #ifndef LTTNG_FIELD_H
 #define LTTNG_FIELD_H
 
+#include <common/format.hpp>
+
+#include <vendor/optional.hpp>
+
 #include <memory>
 #include <string>
 #include <type_traits>
 #include <vector>
 
-#include <vendor/optional.hpp>
-
 namespace lttng {
 namespace sessiond {
 namespace trace {
@@ -456,4 +458,48 @@ protected:
 } /* namespace sessiond */
 } /* namespace lttng */
 
+/*
+ * Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace,
+ * see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480.
+ */
+namespace fmt {
+template <>
+struct formatter<lttng::sessiond::trace::field_location> : formatter<std::string> {
+	template <typename FormatCtx>
+	typename FormatCtx::iterator format(
+			const lttng::sessiond::trace::field_location& location, FormatCtx& ctx)
+	{
+		std::string location_str{"["};
+
+		switch (location.root_) {
+		case lttng::sessiond::trace::field_location::root::PACKET_HEADER:
+			location_str += "\"packet-header\"";
+			break;
+		case lttng::sessiond::trace::field_location::root::PACKET_CONTEXT:
+			location_str += "\"packet-context\"";
+			break;
+		case lttng::sessiond::trace::field_location::root::EVENT_RECORD_HEADER:
+			location_str += "\"event-record-header\"";
+			break;
+		case lttng::sessiond::trace::field_location::root::EVENT_RECORD_COMMON_CONTEXT:
+			location_str += "\"event-record-common-context\"";
+			break;
+		case lttng::sessiond::trace::field_location::root::EVENT_RECORD_SPECIFIC_CONTEXT:
+			location_str += "\"event-record-specific-context\"";
+			break;
+		case lttng::sessiond::trace::field_location::root::EVENT_RECORD_PAYLOAD:
+			location_str += "\"event-record-payload\"";
+			break;
+		}
+
+		for (const auto &name : location.elements_) {
+			location_str += ", \"" + name + "\"";
+		}
+
+		location_str += "]";
+		return format_to(ctx.out(), location_str);
+	}
+};
+} /* namespace fmt */
+
 #endif /* LTTNG_FIELD_H */