OLD | NEW |
| (Empty) |
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 <stdio.h> /* for fwrite */ | |
11 #include <sstream> | |
12 | |
13 #include "util/util.h" | |
14 #include "util/flags.h" | |
15 | |
16 DECLARE_int32(minloglevel); | |
17 | |
18 // Debug-only checking. | |
19 #define DCHECK(condition) assert(condition) | |
20 #define DCHECK_EQ(val1, val2) assert((val1) == (val2)) | |
21 #define DCHECK_NE(val1, val2) assert((val1) != (val2)) | |
22 #define DCHECK_LE(val1, val2) assert((val1) <= (val2)) | |
23 #define DCHECK_LT(val1, val2) assert((val1) < (val2)) | |
24 #define DCHECK_GE(val1, val2) assert((val1) >= (val2)) | |
25 #define DCHECK_GT(val1, val2) assert((val1) > (val2)) | |
26 | |
27 // Always-on checking | |
28 #define CHECK(x) if(x){}else LogMessageFatal(__FILE__, __LINE__).stream()
<< "Check failed: " #x | |
29 #define CHECK_LT(x, y) CHECK((x) < (y)) | |
30 #define CHECK_GT(x, y) CHECK((x) > (y)) | |
31 #define CHECK_LE(x, y) CHECK((x) <= (y)) | |
32 #define CHECK_GE(x, y) CHECK((x) >= (y)) | |
33 #define CHECK_EQ(x, y) CHECK((x) == (y)) | |
34 #define CHECK_NE(x, y) CHECK((x) != (y)) | |
35 | |
36 #define LOG_INFO LogMessage(__FILE__, __LINE__, 0) | |
37 #define LOG_WARNING LogMessage(__FILE__, __LINE__, 1) | |
38 #define LOG_ERROR LogMessage(__FILE__, __LINE__, 2) | |
39 #define LOG_FATAL LogMessageFatal(__FILE__, __LINE__) | |
40 #define LOG_QFATAL LOG_FATAL | |
41 | |
42 // It seems that one of the Windows header files defines ERROR as 0. | |
43 #ifdef _WIN32 | |
44 #define LOG_0 LOG_INFO | |
45 #endif | |
46 | |
47 #ifdef NDEBUG | |
48 #define DEBUG_MODE 0 | |
49 #define LOG_DFATAL LOG_ERROR | |
50 #else | |
51 #define DEBUG_MODE 1 | |
52 #define LOG_DFATAL LOG_FATAL | |
53 #endif | |
54 | |
55 #define LOG(severity) LOG_ ## severity.stream() | |
56 | |
57 #define VLOG(x) if((x)>0){}else LOG_INFO.stream() | |
58 | |
59 class LogMessage { | |
60 public: | |
61 LogMessage(const char* file, int line, int severity) | |
62 : severity_(severity), flushed_(false) { | |
63 stream() << file << ":" << line << ": "; | |
64 } | |
65 void Flush() { | |
66 stream() << "\n"; | |
67 if (severity_ >= re2::FLAGS_minloglevel) { | |
68 string s = str_.str(); | |
69 size_t n = s.size(); | |
70 if (fwrite(s.data(), 1, n, stderr) < n) {} // shut up gcc | |
71 } | |
72 flushed_ = true; | |
73 } | |
74 ~LogMessage() { | |
75 if (!flushed_) { | |
76 Flush(); | |
77 } | |
78 } | |
79 ostream& stream() { return str_; } | |
80 | |
81 private: | |
82 const int severity_; | |
83 bool flushed_; | |
84 std::ostringstream str_; | |
85 DISALLOW_COPY_AND_ASSIGN(LogMessage); | |
86 }; | |
87 | |
88 #ifdef _WIN32 | |
89 #pragma warning(push) | |
90 #pragma warning(disable: 4722) // destructor never returns | |
91 #endif | |
92 | |
93 class LogMessageFatal : public LogMessage { | |
94 public: | |
95 LogMessageFatal(const char* file, int line) | |
96 : LogMessage(file, line, 3) {} | |
97 ~LogMessageFatal() { | |
98 Flush(); | |
99 abort(); | |
100 } | |
101 private: | |
102 DISALLOW_COPY_AND_ASSIGN(LogMessageFatal); | |
103 }; | |
104 | |
105 #ifdef _WIN32 | |
106 #pragma warning(pop) | |
107 #endif | |
108 | |
109 #endif // RE2_UTIL_LOGGING_H__ | |
OLD | NEW |