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-rw-r--r--src/rocksdb/util/stderr_logger.h31
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diff --git a/src/rocksdb/util/stderr_logger.h b/src/rocksdb/util/stderr_logger.h
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+// Copyright (c) Meta Platforms, Inc. and affiliates.
+//
+// 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) {}
+
+ ~StderrLogger() override;
+
+ // 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;
+};
+
+} // namespace ROCKSDB_NAMESPACE