May 2002
Intermediate to advanced
646 pages
18h 57m
English
Content preview from Building Cocoa Applications: A Step by Step GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Debugging Programs with gdb
The GNU debugger is gdb
. It was written and is maintained by
the Free Software Foundation. gdb is a powerful
tool for looking inside a running program and trying to figure out
why that program is not behaving as expected. Apple has modified
gdb to be aware of Objective-C syntax and
objects, and to work together with the PB and Terminal applications.
The gdb tool is located in the directory
/usr/bin. If you
click the Computer icon in the Finder’s toolbar and
then select Macintosh HD, you will not see /usr
listed.
Mac
OS X and the Finder hide many system details from the user, including
Unix system directories such as /usr/bin,
/bin, and /etc. You can
view these directories in the Finder using the Go to Folder sheet,
but you cannot see all directories in the Finder (e.g., the
.app directories are hidden). You can, however,
see all the filesystem directories in a Terminal shell — your
vehicle for exploring the guts of Mac OS X.
Using gdb in Project Builder, Step by Step
The easiest way to use the gdb debugger is in
PB. We’ll show you how to get started with that in
this section. First, we must have an application to work with, so
we’ll use a copy of the CircleView example
application that is bundled with the Mac OS X developer system.
When you debug a running program within PB, you can access some of
the most useful gdb commands graphically. You
can set breakpoints by clicking the mouse next to a line of code (a
breakpoint is a place where a running ...
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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.