bkietz commented on a change in pull request #8305:
URL: https://github.com/apache/arrow/pull/8305#discussion_r500295452
##########
File path: cpp/src/arrow/util/mutex.cc
##########
@@ -19,25 +19,36 @@
#include <mutex>
+#include "arrow/util/logging.h"
+
namespace arrow {
namespace util {
-struct Mutex::Impl {
- std::mutex mutex_;
-};
+struct Mutex::Impl : std::mutex {};
Review comment:
I'll revert this
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