1 files changed, 31 insertions, 0 deletions
diff --git a/src/rocksdb/util/stderr_logger.h b/src/rocksdb/util/stderr_logger.h
new file mode 100644
index 000000000..abf8f5701
--- /dev/null
+++ b/src/rocksdb/util/stderr_logger.h
@@ -0,0 +1,31 @@
+//  Copyright (c) 2016-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#pragma once
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "rocksdb/env.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+// Prints logs to stderr for faster debugging
+class StderrLogger : public Logger {
+ public:
+  explicit StderrLogger(const InfoLogLevel log_level = InfoLogLevel::INFO_LEVEL)
+      : Logger(log_level) {}
+
+  // Brings overloaded Logv()s into scope so they're not hidden when we override
+  // a subset of them.
+  using Logger::Logv;
+
+  virtual void Logv(const char* format, va_list ap) override {
+    vfprintf(stderr, format, ap);
+    fprintf(stderr, "\n");
+  }
+};
+
+}  // namespace ROCKSDB_NAMESPACE