When reading the code I had to stop, say "ok, what does *these*
modifications of strl*() do? Pull out grep. Oh, not in add/, maybe above
in ../lib/? Yep. So what do they do? Comments above them are misleading,
guess I'll have to read the code. Oh, they just test strl* against the
size and return the result of the test. Now I can continue to read the
code I was.
The uses of s_strl*() then test that result and errx()'s.
Lets think about the "optimized" code I am removing:
In general the compiler pushes the three args to strl* onto the stack and calls
s_strl*. s_strl* has to indirectly access 3 args from the stack. Then push
them on the stack a 2nd time for the real strl* call. s_strl* then pops the
return from strl* off the stack; or moves it from the register it was returned
in, to the register where tests can happen. s_strl* then pops the three
arguments to strl*. Perform the test, push the result of the test, or move it
from the result register to the return value register. The caller to s_strl*
now has to either pop the return value of s_strl* or move it from the return
value register to the test register. The caller then pops the three args to
s_strl* off the stack (the same args that s_strl* itself had to pop off after
the real call to strl*). The s_strl* caller then performs a simular test to
what has already been done, and conditionally jumps. By doing things this way, we've given the compiler optimizer less to work with.
Also, please don't forget the that call to s_strl* has possibly jumped to code
not in the cache due to being far away from the calling code, thus causing a
pipeline stall.
So where is the "optimization" from s_strl*?
It isn't code clarity.
It isn't code execution speed. It isn't code size either.
warnx()+exit() with errx() and replace a big if..then..else construct
to determine the package download directory with a lookup table.
Reviewed by: jkh
MFC after: 2 weeks
/usr/X11R6/bin should be there. This helps all the ports that need to
run `mkfontdir' and error out as many port maintainers do not realize
`mkfontdir' isn't in the path.
Prompted by: pkg_add pcemu
`PACKAGEROOT' env var which you would set to a proper mirror of
ftp.FreeBSD.org (say "export PACKAGEROOT=ftp://ftp3.FreeBSD.org"), to
fetch from an alternate place. This is easier to use than `PACKAGESITE'
for true mirrors, and can be used in your dot files across all versions
of FreeBSD.
- fix cosmetics to shut-up compiler in -pedantic mode (axe several unused vars
and provide default clause in several switch() statements).
No response from: -ports
wcarchive. This needs to be updated when:
(a) The directory structure changes on wcarchive
(b) getosreldate() has a new significance
(ie. get ELF packages/get a.out packages)
(c) Branches are changed around
As we stand right now, 3.0-postELFday and 4.0-x all point to the same
directory, but when 4.0 starts to have its own packages, this file will
need to be changed.
The remote option allows for automatic package fetching and installation
using the package repository found on wcarchive. Naturally, this site
can be overridden with a enviornment variable.
This code uses getobjformat() and getosreldate(). This means when some event
causes the package to be fetched to change (such as e-day) the logic also
needs to be changed.
Sorta reviewed by: jkh
Code suggestions: peter, jkh, eivind, msmith
o Fix bogus suffix handling.
o Tell user when an FTP url is being xferred rather than being silent.
This sort of violates "the unix way" but it stops people from whacking
^C when they think it's hung, too. Sometimes visual indication of
success is important. Doesn't spit out anything if not on a TTY.
plain 0 should be used. This happens to work because we #define
NULL to 0, but is stylistically wrong and can cause problems
for people trying to port bits of code to other environments.
PR: 2752
Submitted by: Arne Henrik Juul <arnej@imf.unit.no>
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
later at pkg_delete time to verify that you're deleting what you added.
This, of course, does NOT cover the case where a file you still need
hasn't changed! That's a tougher problem to solve, and this provides
only the minimal amount of safety belt. MD5 checksums are stored in comment
fields, so packages produced with these tools are backwards compatible with
the older ones.
1. pkg_create now has a -P argument for specifying dependencies on the
command line.
2. pkg_add will honor dependencies and chain-load them automatically if
it finds the required package(s) in the same directory as the package
that is being loaded. For best results, install packages from a directory
containing all the packages you'll possibly need
(like /usr/ports/packages/all).
2 remaining flaws:
1. pkg_add looks in one place (where you were when you loaded the primary
pkg) for depended packages. If you can come up with a search path scheme
that's not a total hack - be my guest!
2. Recursive dependency expansion can result in the name of a dep being
listed more than once. This doesn't bother pkg_add since it checks
for package existance with pkg_info and will skip already-loaded packages.
I don't know how/if pkg_delete handles this yet, however. I need to look
into it.
Made pkg_add -n less bitchy.
Made -p in pkg_add override "default" package location in pkg_create.
Added concept of "slave" and "master" modes, allowing many different things
to be done to packing lists on the fly. This is really something for
front-end drivers to use, but also something for the more expert user.
rename()'ing files before trying to copy them, thus saving
considerable time when targets and staging area are on same filesystem.
