ClickHouse/contrib/libre2/util/logging.h
2016-02-05 05:40:38 +03:00

87 lines
2.3 KiB
C++

// Copyright 2009 The RE2 Authors. All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Simplified version of Google's logging.
#ifndef RE2_UTIL_LOGGING_H__
#define RE2_UTIL_LOGGING_H__
#include <unistd.h> /* for write */
#include <sstream>
// Debug-only checking.
#define DCHECK(condition) assert(condition)
#define DCHECK_EQ(val1, val2) assert((val1) == (val2))
#define DCHECK_NE(val1, val2) assert((val1) != (val2))
#define DCHECK_LE(val1, val2) assert((val1) <= (val2))
#define DCHECK_LT(val1, val2) assert((val1) < (val2))
#define DCHECK_GE(val1, val2) assert((val1) >= (val2))
#define DCHECK_GT(val1, val2) assert((val1) > (val2))
// Always-on checking
#define CHECK(x) if(x){}else LogMessageFatal(__FILE__, __LINE__).stream() << "Check failed: " #x
#define CHECK_LT(x, y) CHECK((x) < (y))
#define CHECK_GT(x, y) CHECK((x) > (y))
#define CHECK_LE(x, y) CHECK((x) <= (y))
#define CHECK_GE(x, y) CHECK((x) >= (y))
#define CHECK_EQ(x, y) CHECK((x) == (y))
#define CHECK_NE(x, y) CHECK((x) != (y))
#define LOG_INFO LogMessage(__FILE__, __LINE__)
#define LOG_ERROR LOG_INFO
#define LOG_WARNING LOG_INFO
#define LOG_FATAL LogMessageFatal(__FILE__, __LINE__)
#define LOG_QFATAL LOG_FATAL
#define VLOG(x) if((x)>0){}else LOG_INFO.stream()
#ifdef NDEBUG
#define DEBUG_MODE 0
#define LOG_DFATAL LOG_ERROR
#else
#define DEBUG_MODE 1
#define LOG_DFATAL LOG_FATAL
#endif
#define LOG(severity) LOG_ ## severity.stream()
class LogMessage {
public:
LogMessage(const char* file, int line) : flushed_(false) {
stream() << file << ":" << line << ": ";
}
void Flush() {
stream() << "\n";
string s = str_.str();
int n = (int)s.size(); // shut up msvc
if(write(2, s.data(), n) < 0) {} // shut up gcc
flushed_ = true;
}
~LogMessage() {
if (!flushed_) {
Flush();
}
}
ostream& stream() { return str_; }
private:
bool flushed_;
std::ostringstream str_;
DISALLOW_EVIL_CONSTRUCTORS(LogMessage);
};
class LogMessageFatal : public LogMessage {
public:
LogMessageFatal(const char* file, int line)
: LogMessage(file, line) { }
~LogMessageFatal() {
Flush();
abort();
}
private:
DISALLOW_EVIL_CONSTRUCTORS(LogMessageFatal);
};
#endif // RE2_UTIL_LOGGING_H__