6bc69d5005
[ Merge of http://go/wvgerrit/155070 ] These functions are internal utilities and should not be exported from our library. IIRC, this was added to aid in Windows tests, but this is no longer needed. Bug: 236317198 Test: build_and_run_all_unit_tests.sh Change-Id: I19beb35a15f0f87dc8f968e1dd5302aed9463e54
112 lines
2.9 KiB
C++
112 lines
2.9 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 wvutil {
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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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CDM_LOG_SILENT = -1,
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CDM_LOG_ERROR = 0,
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CDM_LOG_WARN = 1,
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CDM_LOG_INFO = 2,
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CDM_LOG_DEBUG = 3,
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CDM_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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uint32_t uid_;
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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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static const uint32_t UNKNOWN_UID = std::numeric_limits<uint32_t>::max();
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#ifdef __ANDROID__
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void SetLoggingUid(const uint32_t);
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void ClearLoggingUid();
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uint32_t GetLoggingUid();
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uint32_t GetIpcCallingUid();
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#else
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static inline void SetLoggingUid(const uint32_t) {}
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static inline void ClearLoggingUid() {}
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static inline uint32_t GetLoggingUid() { return UNKNOWN_UID; }
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static inline uint32_t GetIpcCallingUid() { return UNKNOWN_UID; }
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#endif
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struct LoggingUidSetter {
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LoggingUidSetter() {}
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LoggingUidSetter(uint32_t uid) { SetLoggingUid(uid); }
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virtual ~LoggingUidSetter() { ClearLoggingUid(); }
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};
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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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void InitLogging();
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#ifdef __GNUC__
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[[gnu::format(printf, 5, 6)]]
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#endif
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void Log(const char* file, const char* function, int line,
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LogPriority level, const char* fmt, ...);
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// Log APIs
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#ifdef CDM_DISABLE_LOGGING
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# define LOGE(...) (void)0
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# define LOGW(...) (void)0
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# define LOGI(...) (void)0
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# define LOGD(...) (void)0
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# define LOGV(...) (void)0
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#else
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# ifndef LOGE
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# define LOGE(...) \
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Log(__FILE__, __func__, __LINE__, wvutil::CDM_LOG_ERROR, __VA_ARGS__)
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# define LOGW(...) \
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Log(__FILE__, __func__, __LINE__, wvutil::CDM_LOG_WARN, __VA_ARGS__)
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# define LOGI(...) \
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Log(__FILE__, __func__, __LINE__, wvutil::CDM_LOG_INFO, __VA_ARGS__)
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# define LOGD(...) \
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Log(__FILE__, __func__, __LINE__, wvutil::CDM_LOG_DEBUG, __VA_ARGS__)
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# define LOGV(...) \
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Log(__FILE__, __func__, __LINE__, wvutil::CDM_LOG_VERBOSE, __VA_ARGS__)
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# endif
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#endif
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} // namespace wvutil
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#endif // WVCDM_UTIL_LOG_H_
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