1 // Copyright 2009 The RE2 Authors. All Rights Reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Simplified version of Google's logging. 6 7 #ifndef RE2_UTIL_LOGGING_H__ 8 #define RE2_UTIL_LOGGING_H__ 9 10 #include <unistd.h> /* for write */ 11 #include <sstream> 12 13 // Debug-only checking. 14 #define DCHECK(condition) assert(condition) 15 #define DCHECK_EQ(val1, val2) assert((val1) == (val2)) 16 #define DCHECK_NE(val1, val2) assert((val1) != (val2)) 17 #define DCHECK_LE(val1, val2) assert((val1) <= (val2)) 18 #define DCHECK_LT(val1, val2) assert((val1) < (val2)) 19 #define DCHECK_GE(val1, val2) assert((val1) >= (val2)) 20 #define DCHECK_GT(val1, val2) assert((val1) > (val2)) 21 22 // Always-on checking 23 #define CHECK(x) if(x){}else LogMessageFatal(__FILE__, __LINE__).stream() << "Check failed: " #x 24 #define CHECK_LT(x, y) CHECK((x) < (y)) 25 #define CHECK_GT(x, y) CHECK((x) > (y)) 26 #define CHECK_LE(x, y) CHECK((x) <= (y)) 27 #define CHECK_GE(x, y) CHECK((x) >= (y)) 28 #define CHECK_EQ(x, y) CHECK((x) == (y)) 29 #define CHECK_NE(x, y) CHECK((x) != (y)) 30 31 #define LOG_INFO LogMessage(__FILE__, __LINE__) 32 #define LOG_ERROR LOG_INFO 33 #define LOG_WARNING LOG_INFO 34 #define LOG_FATAL LogMessageFatal(__FILE__, __LINE__) 35 #define LOG_QFATAL LOG_FATAL 36 37 #define VLOG(x) if((x)>0){}else LOG_INFO.stream() 38 39 #ifdef NDEBUG 40 #define DEBUG_MODE 0 41 #define LOG_DFATAL LOG_ERROR 42 #else 43 #define DEBUG_MODE 1 44 #define LOG_DFATAL LOG_FATAL 45 #endif 46 47 #define LOG(severity) LOG_ ## severity.stream() 48 49 class LogMessage { 50 public: LogMessage(const char * file,int line)51 LogMessage(const char* file, int line) { 52 stream() << file << ":" << line << ": "; 53 } ~LogMessage()54 ~LogMessage() { 55 stream() << "\n"; 56 string s = str_.str(); 57 if(write(2, s.data(), s.size()) < 0) {} // shut up gcc 58 } stream()59 ostream& stream() { return str_; } 60 61 private: 62 std::ostringstream str_; 63 DISALLOW_EVIL_CONSTRUCTORS(LogMessage); 64 }; 65 66 class LogMessageFatal : public LogMessage { 67 public: LogMessageFatal(const char * file,int line)68 LogMessageFatal(const char* file, int line) 69 : LogMessage(file, line) { } ~LogMessageFatal()70 ~LogMessageFatal() { 71 std::cerr << "\n"; 72 abort(); 73 } 74 private: 75 DISALLOW_EVIL_CONSTRUCTORS(LogMessageFatal); 76 }; 77 78 #endif // RE2_UTIL_LOGGING_H__ 79