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Here are some tools that you might find useful while developing code.
Tags are an index to the functions and global variables declared in a
program. Many editors, including Emacs and vi, can use
them. The Makefile
in pintos/src
produces Emacs-style
tags with the command make TAGS or vi-style tags with
make tags.
In Emacs, use M-. to follow a tag in the current window, C-x 4 . in a new window, or C-x 5 . in a new frame. If your cursor is on a symbol name for any of those commands, it becomes the default target. If a tag name has multiple definitions, M-0 M-. jumps to the next one. To jump back to where you were before you followed the last tag, use M-*.
The cscope program also provides an index to functions and
variables declared in a program. It has some features that tag
facilities lack. Most notably, it can find all the points in a
program at which a given function is called.
The Makefile
in pintos/src
produces cscope
indexes when it is invoked as make cscope. Once the index has
been generated, run cscope from a shell command line; no
command-line arguments are normally necessary. Then use the arrow
keys to choose one of the search criteria listed near the bottom of
the terminal, type in an identifier, and hit Enter.
cscope will then display the matches in the upper part of
the terminal. You may use the arrow keys to choose a particular
match; if you then hit Enter, cscope will invoke the
default system editor(9) and position the
cursor on that match. To start a new search, type Tab. To exit
cscope, type Ctrl-d.
Emacs and some versions of vi have their own interfaces to
cscope. For information on how to use these interface,
visit http://cscope.sourceforge.net, the cscope home
page.
It's crucial that you use a source code control system to manage your Pintos code. This will allow you to keep track of your changes and coordinate changes made by different people in the project. For this class we recommend that you use Git; if you followed the instructions on getting started, a Git repository will already have been created for you. If you don't already know how to use Git, we recommend that you read the Pro Git book online.
VNC stands for Virtual Network Computing. It is, in essence, a remote display system which allows you to view a computing "desktop" environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. It is already installed on the lab machines. For more information, look at the VNC Home Page.
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