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Side by Side Diff: src/log-utils.h

Issue 214051: Pushed 1.3.12 to trunk. (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 11 years, 3 months ago
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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. 1 // Copyright 2006-2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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107 static void Close(); 107 static void Close();
108 108
109 // See description in include/v8.h. 109 // See description in include/v8.h.
110 static int GetLogLines(int from_pos, char* dest_buf, int max_size); 110 static int GetLogLines(int from_pos, char* dest_buf, int max_size);
111 111
112 // Returns whether logging is enabled. 112 // Returns whether logging is enabled.
113 static bool IsEnabled() { 113 static bool IsEnabled() {
114 return !is_stopped_ && (output_handle_ != NULL || output_buffer_ != NULL); 114 return !is_stopped_ && (output_handle_ != NULL || output_buffer_ != NULL);
115 } 115 }
116 116
117 // Size of buffer used for formatting log messages.
118 static const int kMessageBufferSize = 2048;
119
117 private: 120 private:
118 typedef int (*WritePtr)(const char* msg, int length); 121 typedef int (*WritePtr)(const char* msg, int length);
119 122
120 // Initialization function called from Open... functions. 123 // Initialization function called from Open... functions.
121 static void Init(); 124 static void Init();
122 125
123 // Write functions assume that mutex_ is acquired by the caller. 126 // Write functions assume that mutex_ is acquired by the caller.
124 static WritePtr Write; 127 static WritePtr Write;
125 128
126 // Implementation of writing to a log file. 129 // Implementation of writing to a log file.
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155 // Maximum size of dynamic buffer. 158 // Maximum size of dynamic buffer.
156 static const int kMaxDynamicBufferSize = 50 * 1024 * 1024; 159 static const int kMaxDynamicBufferSize = 50 * 1024 * 1024;
157 160
158 // Message to "seal" dynamic buffer with. 161 // Message to "seal" dynamic buffer with.
159 static const char* kDynamicBufferSeal; 162 static const char* kDynamicBufferSeal;
160 163
161 // mutex_ is a Mutex used for enforcing exclusive 164 // mutex_ is a Mutex used for enforcing exclusive
162 // access to the formatting buffer and the log file or log memory buffer. 165 // access to the formatting buffer and the log file or log memory buffer.
163 static Mutex* mutex_; 166 static Mutex* mutex_;
164 167
165 // Size of buffer used for formatting log messages.
166 static const int kMessageBufferSize = 2048;
167
168 // Buffer used for formatting log messages. This is a singleton buffer and 168 // Buffer used for formatting log messages. This is a singleton buffer and
169 // mutex_ should be acquired before using it. 169 // mutex_ should be acquired before using it.
170 static char* message_buffer_; 170 static char* message_buffer_;
171 171
172 friend class LogMessageBuilder; 172 friend class LogMessageBuilder;
173 friend class LogRecordCompressor; 173 friend class LogRecordCompressor;
174 }; 174 };
175 175
176 176
177 // An utility class for performing backward reference compression 177 // An utility class for performing backward reference compression
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240 240
241 // Appends an address, compressing it if needed by offsetting 241 // Appends an address, compressing it if needed by offsetting
242 // from Logger::last_address_. 242 // from Logger::last_address_.
243 void AppendAddress(Address addr); 243 void AppendAddress(Address addr);
244 244
245 // Appends an address, compressing it if needed. 245 // Appends an address, compressing it if needed.
246 void AppendAddress(Address addr, Address bias); 246 void AppendAddress(Address addr, Address bias);
247 247
248 void AppendDetailed(String* str, bool show_impl_info); 248 void AppendDetailed(String* str, bool show_impl_info);
249 249
250 // Append a portion of a string.
251 void AppendStringPart(const char* str, int len);
252
250 // Stores log message into compressor, returns true if the message 253 // Stores log message into compressor, returns true if the message
251 // was stored (i.e. doesn't repeat the previous one). 254 // was stored (i.e. doesn't repeat the previous one).
252 bool StoreInCompressor(LogRecordCompressor* compressor); 255 bool StoreInCompressor(LogRecordCompressor* compressor);
253 256
254 // Sets log message to a previous version of compressed message. 257 // Sets log message to a previous version of compressed message.
255 // Returns false, if there is no previous message. 258 // Returns false, if there is no previous message.
256 bool RetrieveCompressedPrevious(LogRecordCompressor* compressor) { 259 bool RetrieveCompressedPrevious(LogRecordCompressor* compressor) {
257 return RetrieveCompressedPrevious(compressor, ""); 260 return RetrieveCompressedPrevious(compressor, "");
258 } 261 }
259 262
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279 282
280 ScopedLock sl; 283 ScopedLock sl;
281 int pos_; 284 int pos_;
282 }; 285 };
283 286
284 #endif // ENABLE_LOGGING_AND_PROFILING 287 #endif // ENABLE_LOGGING_AND_PROFILING
285 288
286 } } // namespace v8::internal 289 } } // namespace v8::internal
287 290
288 #endif // V8_LOG_UTILS_H_ 291 #endif // V8_LOG_UTILS_H_
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