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41 lines
1.1 KiB
41 lines
1.1 KiB
4 months ago
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// Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _BSDIFF_LOGGING_H_
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#define _BSDIFF_LOGGING_H_
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#include <string.h>
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#include <iostream>
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#include <sstream>
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// Simple error logging macro to avoid dependencies in other base libraries.
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#define LOG(severity) LogMessage(__FILE__, __LINE__, #severity).stream()
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// A variant of LOG that also logs the current errno value.
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#define PLOG(severity) LogMessage(__FILE__, __LINE__, #severity, errno).stream()
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// A temporarily scoped object used by LOG & PLOG.
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class LogMessage {
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public:
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LogMessage(const char* file, unsigned int line, const char* severity);
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LogMessage(const char* file,
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unsigned int line,
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const char* severity,
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int error);
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~LogMessage();
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// Returns the stream associated with the message, the LogMessage performs
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// output when it goes out of scope.
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std::ostream& stream() { return stream_; }
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private:
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std::ostringstream stream_;
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int error_; // The saved errno value.
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};
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#endif // _BSDIFF_LOGGING_H_
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