Fix locking for log. (#114)

rnburn · web-flow · commit 89121849f30b · 2018-08-27T08:57:50.000-07:00
diff --git a/src/lightstep_span.cpp b/src/lightstep_span.cpp
@@ -300,6 +300,7 @@ void LightStepSpan::Log(std::initializer_list<
   for (const auto& field : fields) {
     *key_values->Add() = ToKeyValue(field.first, field.second);
   }
+  std::lock_guard<std::mutex> lock_guard{mutex_};
   logs_.emplace_back(std::move(log));
 } catch (const std::exception& e) {
   logger_.Error("Log failed: ", e.what());

Original file line number	Diff line number	Diff line change
`@@ -300,6 +300,7 @@ void LightStepSpan::Log(std::initializer_list<`
`300`	`300`	`for (const auto& field : fields) {`
`301`	`301`	`*key_values->Add() = ToKeyValue(field.first, field.second);`
`302`	`302`	`}`
	`303`	`+ std::lock_guard<std::mutex> lock_guard{mutex_};`
`303`	`304`	`logs_.emplace_back(std::move(log));`
`304`	`305`	`} catch (const std::exception& e) {`
`305`	`306`	`logger_.Error("Log failed: ", e.what());`