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utility: refactor logging module #224
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (c) 2015 Microsoft Corporation | ||
| * | ||
| * -=- Robust Distributed System Nucleus (rDSN) -=- | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
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| #pragma once | ||
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| #include <dsn/utility/enum_helper.h> | ||
| #include <stdarg.h> | ||
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| namespace dsn { | ||
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| enum log_level_t | ||
| { | ||
| LOG_LEVEL_INFORMATION, | ||
| LOG_LEVEL_DEBUG, | ||
| LOG_LEVEL_WARNING, | ||
| LOG_LEVEL_ERROR, | ||
| LOG_LEVEL_FATAL, | ||
| LOG_LEVEL_COUNT, | ||
| LOG_LEVEL_INVALID | ||
| }; | ||
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| ENUM_BEGIN(log_level_t, LOG_LEVEL_INVALID) | ||
| ENUM_REG(LOG_LEVEL_INFORMATION) | ||
| ENUM_REG(LOG_LEVEL_DEBUG) | ||
| ENUM_REG(LOG_LEVEL_WARNING) | ||
| ENUM_REG(LOG_LEVEL_ERROR) | ||
| ENUM_REG(LOG_LEVEL_FATAL) | ||
| ENUM_END(log_level_t) | ||
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| // logs with level smaller than `s_log_start_level` will not be logged | ||
| extern log_level_t s_log_start_level; | ||
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| /// An interface for logging messages. | ||
| class logging_provider | ||
| { | ||
| public: | ||
| virtual ~logging_provider() = default; | ||
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| virtual void logv(const char *file, | ||
| const char *function, | ||
| int line, | ||
| log_level_t log_level, | ||
| const char *fmt, | ||
| va_list args) = 0; | ||
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| virtual void flush() = 0; | ||
| }; | ||
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| /// Initializes default logger for rDSN. | ||
| extern void logging_init(const char *log_dir); | ||
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| /// Customize the logging implementation. | ||
| extern void set_logging_provider(std::unique_ptr<logging_provider> provider); | ||
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| } // namespace dsn | ||
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| extern void dsn_logf(const char *file, | ||
| const char *function, | ||
| int line, | ||
| dsn::log_level_t log_level, | ||
| const char *fmt, | ||
| ...); | ||
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| extern void dsn_coredump(); | ||
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| // __FILENAME__ macro comes from the cmake, in which we calculate a filename without path. | ||
| #define dlog(level, ...) \ | ||
| do { \ | ||
| if (level >= dsn::s_log_start_level) \ | ||
| dsn_logf(__FILENAME__, __FUNCTION__, __LINE__, level, __VA_ARGS__); \ | ||
| } while (false) | ||
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| #define dinfo(...) dlog(dsn::LOG_LEVEL_INFORMATION, __VA_ARGS__) | ||
| #define ddebug(...) dlog(dsn::LOG_LEVEL_DEBUG, __VA_ARGS__) | ||
| #define dwarn(...) dlog(dsn::LOG_LEVEL_WARNING, __VA_ARGS__) | ||
| #define derror(...) dlog(dsn::LOG_LEVEL_ERROR, __VA_ARGS__) | ||
| #define dfatal(...) dlog(dsn::LOG_LEVEL_FATAL, __VA_ARGS__) | ||
| #define dassert(x, ...) \ | ||
| do { \ | ||
| if (dsn_unlikely(!(x))) { \ | ||
| dlog(dsn::LOG_LEVEL_FATAL, "assertion expression: " #x); \ | ||
| dlog(dsn::LOG_LEVEL_FATAL, __VA_ARGS__); \ | ||
| dsn_coredump(); \ | ||
| } \ | ||
| } while (false) | ||
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| #define dreturn_not_ok_logged(err, ...) \ | ||
| do { \ | ||
| if ((err) != dsn::ERR_OK) { \ | ||
|
There was a problem hiding this comment. 这个地方应该不能这么写。因为如果err是个表达式的话，可能会执行两遍。 |
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| derror(__VA_ARGS__); \ | ||
| return err; \ | ||
| } \ | ||
| } while (0) | ||
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| #ifndef NDEBUG | ||
| #define dbg_dassert dassert | ||
| #else | ||
| #define dbg_dassert(x, ...) | ||
| #endif | ||
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这个nfs其实也没用了，我忘了删了。下个pr可以删了