diff options
Diffstat (limited to 'base/include/base/logging.h')
| -rw-r--r-- | base/include/base/logging.h | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/base/include/base/logging.h b/base/include/base/logging.h index 3460997..19c1b64 100644 --- a/base/include/base/logging.h +++ b/base/include/base/logging.h @@ -17,6 +17,7 @@ #ifndef BASE_LOGGING_H #define BASE_LOGGING_H +#include <functional> #include <memory> #include <ostream> @@ -35,10 +36,32 @@ enum LogSeverity { }; enum LogId { + DEFAULT, MAIN, SYSTEM, }; +typedef std::function<void(LogId, LogSeverity, const char*, const char*, + unsigned int, const char*)> LogFunction; + +extern void StderrLogger(LogId, LogSeverity, const char*, const char*, + unsigned int, const char*); + +#ifdef __ANDROID__ +// We expose this even though it is the default because a user that wants to +// override the default log buffer will have to construct this themselves. +class LogdLogger { + public: + explicit LogdLogger(LogId default_log_id = android::base::MAIN); + + void operator()(LogId, LogSeverity, const char* tag, const char* file, + unsigned int line, const char* message); + + private: + LogId default_log_id_; +}; +#endif + // Configure logging based on ANDROID_LOG_TAGS environment variable. // We need to parse a string that looks like // @@ -47,8 +70,15 @@ enum LogId { // The tag (or '*' for the global level) comes first, followed by a colon and a // letter indicating the minimum priority level we're expected to log. This can // be used to reveal or conceal logs with specific tags. +extern void InitLogging(char* argv[], LogFunction&& logger); + +// Configures logging using the default logger (logd for the device, stderr for +// the host). extern void InitLogging(char* argv[]); +// Replace the current logger. +extern void SetLogger(LogFunction&& logger); + // Returns the command line used to invoke the current tool or nullptr if // InitLogging hasn't been performed. extern const char* GetCmdLine(); @@ -65,8 +95,8 @@ extern const char* ProgramInvocationShortName(); // FATAL it also causes an abort. For example: // // LOG(FATAL) << "We didn't expect to reach here"; -#define LOG(severity) \ - ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::MAIN, \ +#define LOG(severity) \ + ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \ ::android::base::severity, -1).stream() // Logs a message to logcat with the specified log ID on Android otherwise to @@ -77,8 +107,8 @@ extern const char* ProgramInvocationShortName(); // A variant of LOG that also logs the current errno value. To be used when // library calls fail. -#define PLOG(severity) \ - ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::MAIN, \ +#define PLOG(severity) \ + ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \ ::android::base::severity, errno).stream() // Behaves like PLOG, but logs to the specified log ID. @@ -96,20 +126,20 @@ extern const char* ProgramInvocationShortName(); // // CHECK(false == true) results in a log message of // "Check failed: false == true". -#define CHECK(x) \ - if (UNLIKELY(!(x))) \ - ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::MAIN, \ - ::android::base::FATAL, -1).stream() \ +#define CHECK(x) \ + if (UNLIKELY(!(x))) \ + ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \ + ::android::base::FATAL, -1).stream() \ << "Check failed: " #x << " " // Helper for CHECK_xx(x,y) macros. -#define CHECK_OP(LHS, RHS, OP) \ - for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS); \ - UNLIKELY(!(_values.lhs OP _values.rhs)); \ - /* empty */) \ - ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::MAIN, \ - ::android::base::FATAL, -1).stream() \ - << "Check failed: " << #LHS << " " << #OP << " " << #RHS \ +#define CHECK_OP(LHS, RHS, OP) \ + for (auto _values = ::android::base::MakeEagerEvaluator(LHS, RHS); \ + UNLIKELY(!(_values.lhs OP _values.rhs)); \ + /* empty */) \ + ::android::base::LogMessage(__FILE__, __LINE__, ::android::base::DEFAULT, \ + ::android::base::FATAL, -1).stream() \ + << "Check failed: " << #LHS << " " << #OP << " " << #RHS \ << " (" #LHS "=" << _values.lhs << ", " #RHS "=" << _values.rhs << ") " // Check whether a condition holds between x and y, LOG(FATAL) if not. The value |