89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine License
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// Agreement.
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//
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// Log - Platform independent interface for a Logging class
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//
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#ifndef WVCDM_UTIL_LOG_H_
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#define WVCDM_UTIL_LOG_H_
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#include <cstdint>
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#include <deque>
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#include <mutex>
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#include <string>
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#include <vector>
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#include "util_common.h"
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namespace wvcdm {
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// Simple logging class. The implementation is platform dependent.
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typedef enum {
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// This log level should only be used for |g_cutoff|, in order to silence all
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// logging. It should never be passed to |Log()| as a log level.
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LOG_SILENT = -1,
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LOG_ERROR = 0,
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LOG_WARN = 1,
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LOG_INFO = 2,
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LOG_DEBUG = 3,
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LOG_VERBOSE = 4,
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} LogPriority;
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extern LogPriority g_cutoff;
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struct LogMessage {
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int64_t time_ms_;
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LogPriority priority_;
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std::string message_;
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};
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class LogBuffer {
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public:
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static const int MAX_CAPACITY = 100;
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void addLog(const LogMessage& log);
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std::vector<LogMessage> getLogs();
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private:
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std::deque<LogMessage> buffer_;
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std::mutex mutex_;
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};
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extern LogBuffer g_logbuf;
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// Enable/disable verbose logging (LOGV).
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// This function is supplied for cases where the system layer does not
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// initialize logging. This is also needed to initialize logging in
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// unit tests.
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CORE_UTIL_EXPORT void InitLogging();
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// Only enable format specifier warnings on LP64 systems. There is
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// no easy portable method to handle format specifiers for int64_t.
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#if (defined(__GNUC__) || defined(__clang__)) && defined(__LP64__)
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[[gnu::format(printf, 5, 6)]] CORE_UTIL_EXPORT void Log(const char* file,
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const char* function,
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int line,
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LogPriority level,
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const char* fmt, ...);
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#else
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CORE_UTIL_EXPORT void Log(const char* file, const char* function, int line,
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LogPriority level, const char* fmt, ...);
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#endif
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// Log APIs
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#ifndef LOGE
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# define LOGE(...) \
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Log(__FILE__, __func__, __LINE__, wvcdm::LOG_ERROR, __VA_ARGS__)
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# define LOGW(...) \
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Log(__FILE__, __func__, __LINE__, wvcdm::LOG_WARN, __VA_ARGS__)
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# define LOGI(...) \
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Log(__FILE__, __func__, __LINE__, wvcdm::LOG_INFO, __VA_ARGS__)
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# define LOGD(...) \
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Log(__FILE__, __func__, __LINE__, wvcdm::LOG_DEBUG, __VA_ARGS__)
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# define LOGV(...) \
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Log(__FILE__, __func__, __LINE__, wvcdm::LOG_VERBOSE, __VA_ARGS__)
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#endif
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} // namespace wvcdm
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#endif // WVCDM_UTIL_LOG_H_
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