Move webrtc/{base => rtc_base}

webrtc/base/logging.h

Index: webrtc/base/logging.h
diff --git a/webrtc/base/logging.h b/webrtc/base/logging.h
index 8f476a0215c19b2848fd65b0a9165542d001f418..594d9c992a3fa446e9043a5ba4b49fef6a1eb13c 100644
--- a/webrtc/base/logging.h
+++ b/webrtc/base/logging.h
@@ -46,325 +46,9 @@
 #ifndef WEBRTC_BASE_LOGGING_H_
 #define WEBRTC_BASE_LOGGING_H_
 
-#include <errno.h>
 
-#include <list>
-#include <sstream>
-#include <string>
-#include <utility>
-
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-#include <CoreServices/CoreServices.h>
-#endif
-
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/base/thread_annotations.h"
-
-namespace rtc {
-
-///////////////////////////////////////////////////////////////////////////////
-// ConstantLabel can be used to easily generate string names from constant
-// values.  This can be useful for logging descriptive names of error messages.
-// Usage:
-//   const ConstantLabel LIBRARY_ERRORS[] = {
-//     KLABEL(SOME_ERROR),
-//     KLABEL(SOME_OTHER_ERROR),
-//     ...
-//     LASTLABEL
-//   }
-//
-//   int err = LibraryFunc();
-//   LOG(LS_ERROR) << "LibraryFunc returned: "
-//                 << ErrorName(err, LIBRARY_ERRORS);
-
-struct ConstantLabel { int value; const char * label; };
-#define KLABEL(x) { x, #x }
-#define TLABEL(x, y) { x, y }
-#define LASTLABEL { 0, 0 }
-
-const char* FindLabel(int value, const ConstantLabel entries[]);
-std::string ErrorName(int err, const ConstantLabel* err_table);
-
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-// Returns a UTF8 description from an OS X Status error.
-std::string DescriptionFromOSStatus(OSStatus err);
-#endif
-
-//////////////////////////////////////////////////////////////////////
-
-// Note that the non-standard LoggingSeverity aliases exist because they are
-// still in broad use.  The meanings of the levels are:
-//  LS_SENSITIVE: Information which should only be logged with the consent
-//   of the user, due to privacy concerns.
-//  LS_VERBOSE: This level is for data which we do not want to appear in the
-//   normal debug log, but should appear in diagnostic logs.
-//  LS_INFO: Chatty level used in debugging for all sorts of things, the default
-//   in debug builds.
-//  LS_WARNING: Something that may warrant investigation.
-//  LS_ERROR: Something that should not have occurred.
-//  LS_NONE: Don't log.
-enum LoggingSeverity {
-  LS_SENSITIVE,
-  LS_VERBOSE,
-  LS_INFO,
-  LS_WARNING,
-  LS_ERROR,
-  LS_NONE,
-  INFO = LS_INFO,
-  WARNING = LS_WARNING,
-  LERROR = LS_ERROR
-};
-
-// LogErrorContext assists in interpreting the meaning of an error value.
-enum LogErrorContext {
-  ERRCTX_NONE,
-  ERRCTX_ERRNO,     // System-local errno
-  ERRCTX_HRESULT,   // Windows HRESULT
-  ERRCTX_OSSTATUS,  // MacOS OSStatus
-
-  // Abbreviations for LOG_E macro
-  ERRCTX_EN = ERRCTX_ERRNO,     // LOG_E(sev, EN, x)
-  ERRCTX_HR = ERRCTX_HRESULT,   // LOG_E(sev, HR, x)
-  ERRCTX_OS = ERRCTX_OSSTATUS,  // LOG_E(sev, OS, x)
-};
-
-// Virtual sink interface that can receive log messages.
-class LogSink {
- public:
-  LogSink() {}
-  virtual ~LogSink() {}
-  virtual void OnLogMessage(const std::string& message) = 0;
-};
-
-class LogMessage {
- public:
-  LogMessage(const char* file,
-             int line,
-             LoggingSeverity sev,
-             LogErrorContext err_ctx = ERRCTX_NONE,
-             int err = 0,
-             const char* module = nullptr);
-
-  LogMessage(const char* file,
-             int line,
-             LoggingSeverity sev,
-             const std::string& tag);
-
-  ~LogMessage();
-
-  static inline bool Loggable(LoggingSeverity sev) { return (sev >= min_sev_); }
-  std::ostream& stream() { return print_stream_; }
-
-  // Returns the time at which this function was called for the first time.
-  // The time will be used as the logging start time.
-  // If this is not called externally, the LogMessage ctor also calls it, in
-  // which case the logging start time will be the time of the first LogMessage
-  // instance is created.
-  static int64_t LogStartTime();
-
-  // Returns the wall clock equivalent of |LogStartTime|, in seconds from the
-  // epoch.
-  static uint32_t WallClockStartTime();
-
-  //  LogThreads: Display the thread identifier of the current thread
-  static void LogThreads(bool on = true);
-
-  //  LogTimestamps: Display the elapsed time of the program
-  static void LogTimestamps(bool on = true);
-
-  // These are the available logging channels
-  //  Debug: Debug console on Windows, otherwise stderr
-  static void LogToDebug(LoggingSeverity min_sev);
-  static LoggingSeverity GetLogToDebug() { return dbg_sev_; }
-
-  // Sets whether logs will be directed to stderr in debug mode.
-  static void SetLogToStderr(bool log_to_stderr);
-
-  //  Stream: Any non-blocking stream interface.  LogMessage takes ownership of
-  //   the stream. Multiple streams may be specified by using AddLogToStream.
-  //   LogToStream is retained for backwards compatibility; when invoked, it
-  //   will discard any previously set streams and install the specified stream.
-  //   GetLogToStream gets the severity for the specified stream, of if none
-  //   is specified, the minimum stream severity.
-  //   RemoveLogToStream removes the specified stream, without destroying it.
-  static int GetLogToStream(LogSink* stream = nullptr);
-  static void AddLogToStream(LogSink* stream, LoggingSeverity min_sev);
-  static void RemoveLogToStream(LogSink* stream);
-
-  // Testing against MinLogSeverity allows code to avoid potentially expensive
-  // logging operations by pre-checking the logging level.
-  static int GetMinLogSeverity() { return min_sev_; }
-
-  // Parses the provided parameter stream to configure the options above.
-  // Useful for configuring logging from the command line.
-  static void ConfigureLogging(const char* params);
-
- private:
-  typedef std::pair<LogSink*, LoggingSeverity> StreamAndSeverity;
-  typedef std::list<StreamAndSeverity> StreamList;
-
-  // Updates min_sev_ appropriately when debug sinks change.
-  static void UpdateMinLogSeverity();
-
-  // These write out the actual log messages.
-  static void OutputToDebug(const std::string& msg,
-                            LoggingSeverity severity,
-                            const std::string& tag);
-
-  // The ostream that buffers the formatted message before output
-  std::ostringstream print_stream_;
-
-  // The severity level of this message
-  LoggingSeverity severity_;
-
-  // The Android debug output tag.
-  std::string tag_;
-
-  // String data generated in the constructor, that should be appended to
-  // the message before output.
-  std::string extra_;
-
-  // dbg_sev_ is the thresholds for those output targets
-  // min_sev_ is the minimum (most verbose) of those levels, and is used
-  //  as a short-circuit in the logging macros to identify messages that won't
-  //  be logged.
-  // ctx_sev_ is the minimum level at which file context is displayed
-  static LoggingSeverity min_sev_, dbg_sev_, ctx_sev_;
-
-  // The output streams and their associated severities
-  static StreamList streams_;
-
-  // Flags for formatting options
-  static bool thread_, timestamp_;
-
-  // Determines if logs will be directed to stderr in debug mode.
-  static bool log_to_stderr_;
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(LogMessage);
-};
-
-//////////////////////////////////////////////////////////////////////
-// Logging Helpers
-//////////////////////////////////////////////////////////////////////
-
-class LogMultilineState {
- public:
-  size_t unprintable_count_[2];
-  LogMultilineState() {
-    unprintable_count_[0] = unprintable_count_[1] = 0;
-  }
-};
-
-// When possible, pass optional state variable to track various data across
-// multiple calls to LogMultiline.  Otherwise, pass null.
-void LogMultiline(LoggingSeverity level, const char* label, bool input,
-                  const void* data, size_t len, bool hex_mode,
-                  LogMultilineState* state);
-
-#ifndef LOG
-
-// The following non-obvious technique for implementation of a
-// conditional log stream was stolen from google3/base/logging.h.
-
-// This class is used to explicitly ignore values in the conditional
-// logging macros.  This avoids compiler warnings like "value computed
-// is not used" and "statement has no effect".
-
-class LogMessageVoidify {
- public:
-  LogMessageVoidify() { }
-  // This has to be an operator with a precedence lower than << but
-  // higher than ?:
-  void operator&(std::ostream&) { }
-};
-
-#define LOG_SEVERITY_PRECONDITION(sev) \
-  !(rtc::LogMessage::Loggable(sev)) \
-    ? (void) 0 \
-    : rtc::LogMessageVoidify() &
-
-#define LOG(sev) \
-  LOG_SEVERITY_PRECONDITION(rtc::sev) \
-    rtc::LogMessage(__FILE__, __LINE__, rtc::sev).stream()
-
-// The _V version is for when a variable is passed in.  It doesn't do the
-// namespace concatination.
-#define LOG_V(sev) \
-  LOG_SEVERITY_PRECONDITION(sev) \
-    rtc::LogMessage(__FILE__, __LINE__, sev).stream()
-
-// The _F version prefixes the message with the current function name.
-#if (defined(__GNUC__) && !defined(NDEBUG)) || defined(WANT_PRETTY_LOG_F)
-#define LOG_F(sev) LOG(sev) << __PRETTY_FUNCTION__ << ": "
-#define LOG_T_F(sev) LOG(sev) << this << ": " << __PRETTY_FUNCTION__ << ": "
-#else
-#define LOG_F(sev) LOG(sev) << __FUNCTION__ << ": "
-#define LOG_T_F(sev) LOG(sev) << this << ": " << __FUNCTION__ << ": "
-#endif
-
-#define LOG_CHECK_LEVEL(sev) \
-  rtc::LogCheckLevel(rtc::sev)
-#define LOG_CHECK_LEVEL_V(sev) \
-  rtc::LogCheckLevel(sev)
-
-inline bool LogCheckLevel(LoggingSeverity sev) {
-  return (LogMessage::GetMinLogSeverity() <= sev);
-}
-
-#define LOG_E(sev, ctx, err, ...) \
-  LOG_SEVERITY_PRECONDITION(rtc::sev) \
-    rtc::LogMessage(__FILE__, __LINE__, rtc::sev, \
-                          rtc::ERRCTX_ ## ctx, err , ##__VA_ARGS__) \
-        .stream()
-
-#define LOG_T(sev) LOG(sev) << this << ": "
-
-#define LOG_ERRNO_EX(sev, err) \
-  LOG_E(sev, ERRNO, err)
-#define LOG_ERRNO(sev) \
-  LOG_ERRNO_EX(sev, errno)
-
-#if defined(WEBRTC_WIN)
-#define LOG_GLE_EX(sev, err) \
-  LOG_E(sev, HRESULT, err)
-#define LOG_GLE(sev) \
-  LOG_GLE_EX(sev, GetLastError())
-#define LOG_GLEM(sev, mod) \
-  LOG_E(sev, HRESULT, GetLastError(), mod)
-#define LOG_ERR_EX(sev, err) \
-  LOG_GLE_EX(sev, err)
-#define LOG_ERR(sev) \
-  LOG_GLE(sev)
-#define LAST_SYSTEM_ERROR \
-  (::GetLastError())
-#elif defined(__native_client__) && __native_client__
-#define LOG_ERR_EX(sev, err) \
-  LOG(sev)
-#define LOG_ERR(sev) \
-  LOG(sev)
-#define LAST_SYSTEM_ERROR \
-  (0)
-#elif defined(WEBRTC_POSIX)
-#define LOG_ERR_EX(sev, err) \
-  LOG_ERRNO_EX(sev, err)
-#define LOG_ERR(sev) \
-  LOG_ERRNO(sev)
-#define LAST_SYSTEM_ERROR \
-  (errno)
-#endif  // WEBRTC_WIN
-
-#define LOG_TAG(sev, tag)        \
-  LOG_SEVERITY_PRECONDITION(sev) \
-  rtc::LogMessage(nullptr, 0, sev, tag).stream()
-
-#define PLOG(sev, err) \
-  LOG_ERR_EX(sev, err)
-
-// TODO(?): Add an "assert" wrapper that logs in the same manner.
-
-#endif  // LOG
-
-}  // namespace rtc
+// This header is deprecated and is just left here temporarily during
+// refactoring. See https://bugs.webrtc.org/7634 for more details.
+#include "webrtc/rtc_base/logging.h"
 
 #endif  // WEBRTC_BASE_LOGGING_H_