September 2016
Intermediate to advanced
989 pages
24h 10m
English
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Just-in-time debugging
Sometimes a program will start to misbehave after it has been running for a while and you would like to know what it is doing. The GDB attach feature does exactly that. I call it just-in-time debugging. It is available with both native and remote debug sessions.
In the case of remote debugging, you need to find the PID of the process to be debugged and pass it to gdbserver with the --attach option. For example, if the PID is 109 you would type:
# gdbserver --attach :10000 109 Attached; pid = 109 Listening on port 10000
That forces the process to stop as if it were at a breakpoint, allowing you to start your cross GDB in the normal way and connect to gdbserver.
When you are done you can detach, allowing the program to continue ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.