[SOLVED] GDB Breakpoint Internals

rupeshkp728 · 07-17-2012, 04:33 AM

When we put a breakpoint using gcc then what all things happen internally and how the gdb using break is able to pause the execution of process( instead of killing it ) and later on resume the process execution?

firstfire · 07-17-2012, 04:59 AM

Hi.

This document may be useful. See section 3.2.

rupeshkp728 · 07-17-2012, 05:27 AM

Thanks firstfire for the link.
It is indeed helpful and clears it all.

resetreset · 07-17-2012, 02:55 PM

Just out of curiosity, what were you doing that brought you to this question?

rupeshkp728 · 07-18-2012, 05:41 AM

resetrest I was planning to write two process in which both of the process must be able to pause the other without killing it and share info between them.

firstfire · 07-18-2012, 06:31 AM

Hi.

If you just want to be able to pause execution of the process, no matter at which instruction it happen, then look at SIGSTOP and SIGCONT signals (see `man 7 signal').