c87153ed32
* Fix CRAN check by removing reference to std::cerr * Mask tests that fail on 32-bit Windows R
82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/*!
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* Copyright (c) 2015 by Contributors
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* \file logging.h
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* \brief defines console logging options for xgboost.
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* Use to enforce unified print behavior.
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* For debug loggers, use LOG(INFO) and LOG(ERROR).
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*/
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#ifndef XGBOOST_LOGGING_H_
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#define XGBOOST_LOGGING_H_
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#include <dmlc/logging.h>
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#include <dmlc/thread_local.h>
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#include <sstream>
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#include "./base.h"
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namespace xgboost {
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class BaseLogger {
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public:
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BaseLogger() {
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#if XGBOOST_LOG_WITH_TIME
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log_stream_ << "[" << dmlc::DateLogger().HumanDate() << "] ";
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#endif
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}
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std::ostream& stream() { return log_stream_; } // NOLINT
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protected:
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std::ostringstream log_stream_;
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};
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class ConsoleLogger : public BaseLogger {
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public:
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~ConsoleLogger();
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};
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class TrackerLogger : public BaseLogger {
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public:
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~TrackerLogger();
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};
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// custom logging callback; disabled for R wrapper
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#if !defined(XGBOOST_STRICT_R_MODE) || XGBOOST_STRICT_R_MODE == 0
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class LogCallbackRegistry {
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public:
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using Callback = void (*)(const char*);
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LogCallbackRegistry()
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: log_callback_([] (const char* msg) { std::cerr << msg << std::endl; }) {}
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inline void Register(Callback log_callback) {
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this->log_callback_ = log_callback;
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}
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inline Callback Get() const {
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return log_callback_;
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}
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private:
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Callback log_callback_;
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};
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#else
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class LogCallbackRegistry {
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public:
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using Callback = void (*)(const char*);
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LogCallbackRegistry() {}
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inline void Register(Callback log_callback) {}
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inline Callback Get() const {
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return nullptr;
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}
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};
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#endif
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using LogCallbackRegistryStore = dmlc::ThreadLocalStore<LogCallbackRegistry>;
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// redefines the logging macro if not existed
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#ifndef LOG
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#define LOG(severity) LOG_##severity.stream()
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#endif
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// Enable LOG(CONSOLE) for print messages to console.
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#define LOG_CONSOLE ::xgboost::ConsoleLogger()
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// Enable LOG(TRACKER) for print messages to tracker
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#define LOG_TRACKER ::xgboost::TrackerLogger()
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} // namespace xgboost.
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#endif // XGBOOST_LOGGING_H_
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