CODEWITHSUNDEEP
c++logging
NoSenseEtAl
NoSenseEtAl

Reputation: 30138

Is there a "built in way" to log everything with glog up to the program crash?

I'm interested in using some logging to help me detect potential problems in my code, and to detect where my program crashed. My problem is that lib that I used (google glog) doesn't log the stuff if they occur just before the program crash. So I tried to do something like this (this is template for 3 arguments):

mutex logMtx;
template<class T, class U, class V>
void mutexLOG_INFO(T t, U u, V v)
{
    stringstream ss;
    ss<<t;
    ss<<u;
    ss<<v;
    LOG(INFO)<<ss.str();
    mutex::scoped_lock sl(logMtx);
    google::FlushLogFiles(0);
}

It works AFAIK (from my testing), but as you can see it is not very nice, because I need to do my own function for every level (INFO,WARNING..) and for every number of parameters. Also I hate reinventing the wheel.

So is there a way to tell glog to flush every time after LOG?

P.S. I know that this is g-log, not g-db (oops, name taken :) but I prefer to have the option to print nicely my STL data, I use gdb only to detect where things died.

EDIT: SO proves again that it is a great source of info:

#include <glog/logging.h>
#include <**gflags**/gflags.h>
...
FLAGS_logbuflevel=-1;

Upvotes: 5

Views: 2692

Answers (1)

masebase
masebase

Reputation: 5195

I use gflags with glog and if you run --help the option logbuflevel might be what you are looking for.

    -logbuflevel (Buffer log messages logged at this level or lower (-1 means
  don't buffer; 0 means buffer INFO only; ...)) type: int32 default: 0

Upvotes: 3

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