post-performance-tracking-handler.cpp

 //
 // This file is part of Easylogging++ samples
 // PerformanceTrackingCallback sample
 //
 // Revision 1.0
 // @author mkhan3189
 //

#include "easylogging++.h"

INITIALIZE_EASYLOGGINGPP
class Handler : public el::PerformanceTrackingCallback {
protected:
void handle(const el::PerformanceTrackingData* data) {
    // NEVER DO PERFORMANCE TRACKING FROM HANDLER
    // TIMED_SCOPE(handBlock, "handerBlock");
    
    // ELPP_COUT is cout when not using unicode otherwise wcout
    ELPP_COUT << "I am from handler: " << data->blockName()->c_str() << " in " << *data->formattedTimeTaken();
    if (data->dataType() == el::PerformanceTrackingData::DataType::Checkpoint) {
        ELPP_COUT << " [CHECKPOINT ONLY] ";
    }
    ELPP_COUT << std::endl;
    LOG(INFO) << "You can even log from here!";
}
};

int main(void) {

    TIMED_SCOPE(mainBlock, "main");

    el::Helpers::installPerformanceTrackingCallback<Handler>("handler");

    TIMED_BLOCK(obj, "my-block") {
        for (int i = 0; i <= 500; ++i) {
            // Spend time
            for (int j = 0; j < 10000; ++j) { std::string tmp; }
            if (i % 100 == 0) {
                obj.timer->checkpoint(std::string(std::string("checkpoint at ") + std::to_string(static_cast<unsigned long long>(i))).c_str());
            }
        }
    } 
    LOG(INFO) << "By now, you should get performance result of above scope";

    return 0;
}





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