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* add missing forward declarations
* remove needless header inclusions
* some style unification
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Drop the FORM_GZ annotation in the mpages table; it is conceptually wrong
because it ought to be in the mlinks table: An uncompressed .so link file
can point to a compressed manual page file and vice versa.
Besides, it is no longer needed because mparse_open() handles it all.
Sprinkle some KNF while here.
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first .Nm entries over other NAME .Nm entries over SYNOPSIS .Nm entries.
For example, this makes sure "man ypbind" does not return yp(8).
Re-run "makewhatis" to profit from this change.
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that contained at least one match in order to not prefer mdoc(1) from
ports over mdoc(7). As a bonus, this results in a speedup.
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note in mandoc.db(5), such that man(1) -w and apropos(1) -w can
report the correct filename.
This is a prerequisite for letting apropos -a and man support
gzip'ed manuals in the future, which doesn't work yet.
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just like traditional man(1) does, such that .so links have a chance to
work. After this point, we don't need the current directory for anything
else before exit, so we don't need to worry about getting back and we can
safely ignore failure.
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Switch the argmode on the progname, including man(1).
Provide -f and -k options to switch the argmode.
Store the argmode inside struct search, generalizing the flags.
Derive the deftype from the argmode when needed instead of storing it.
Store the outkey inside struct search instead of passing it alone.
While here, get rid of the trailing blanks in Makefile.depend.
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By moving the sort from cgi.c to mansearch.c, we get two advantages:
Easier access to the data needed for sorting, in particular the section
number, and the apropos(1) command line utility profits as well.
Feature requested by deraadt@.
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While here, also provide an internal mode (MANSEARCH_MAN) to match
complete names, to be used by man.cgi(8).
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Contrary to what i initially thought, almost all time is now spent
inside sqlite3(3) routines, and i found no easy way calling less of them.
However, sqlite(3) spends substantial time in malloc(3), and even more
(twice that) in its immediate malloc wrapper, sqlite3MemMalloc(),
keeping track of all individual malloc chunk sizes. Typically about
90% of the malloced memory is used for purposes of the pagecache.
By providing an mmap(3) MAP_ANON SQLITE_CONFIG_PAGECACHE, execution
time decreases by 20-25% for simple (Nd and/or Nm) queries, 10-20% for
non-NAME queries, and even apropos(1) resident memory size as reported
by top(1) decreases by 20% for simple and by 60% for non-NAME queries.
The new function, mansearch_setup(), spends no measurable time.
The pagesize chosen is optimal:
* Substantially smaller pages yield no gain at all.
* Larger pages provide no additional benefit and just waste memory.
The chosen number of pages in the cache is a compromise:
* For simple queries, a handful of pages would suffice to get the full
speed effect, at an apropos(1) resident memory size of about 2.0 MB.
* For non-NAME queries, a large pagecache with 2k pages (2.5 MB) might
gain a few more percent in speed, but at the expense of doubling the
apropos(1) resident memory size for *all* queries.
* The chosen number of 256 pages (330 kB) allows nearly full speed gain
for all queries at the price of a 15% resident memory size increase.
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Split manual names out of the common "keys" table into their
own "names" table. This reduces standard apropos(1) search
times (i.e. searching for names and descriptions only) by
typically about 70% for the full /usr/share/man database.
(Yes, that multiplies with the previous optimization step,
so both together have reduced search times by a factor of
more than six. I'm not done yet, expect more to come.)
Even with the minimal databases built with makewhatis(8) -Q,
this step still reduces search times by 15-20%. For both cases,
database sizes and build times hardly change (+/-2%).
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back from the keys table to the mpages table: I found a good way
to still use them in searches, without complication of the code.
On my notebook, this reduces typical apropos(1) search times by about 40%,
it reduces /usr/share/man database size by 6% in makewhatis(8) -Q mode
and by 2% in standard mode (less overhead storing pointers to mpages),
and it doesn't measurably change database build times (may even be
going down by a percent or so because less data is being copied
around in ohashes).
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This helps to find missing MLINKS.
Database build times do not change and database growth is minimal
(1.2% with -Q, 0.7% without -Q in /usr/share/man),
so making this optional would be pointless.
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mask size. No functional change.
This shrinks the standard /usr/share/man database by 7%, now at 10.3x
the size of whatis.db, and with -Q even by 11%, now at 3.0x of whatis.db.
Now i'm out of ideas to easily shrink the size of the database.
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This shrinks the database in standard mode by 3%, in -Q mode by 9%,
without loss of functionality.
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in preparation for removing them from the mpages table,
aiming for cleaner and more uniform interfaces.
Database growth is below 4%, part of which will be reclaimed.
As a bonus, this allows searches like:
./obj/apropos An=kettenis -a arch=ppc
./obj/apropos An=kettenis -a sec~[^4]
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This really takes us beyond what grep -R /usr/*/man/ can do
because now you can search for pages by *one* criterion and then
display the contents of *another* macro from those pages, like in
$ apropos -O Ox Fa~wchar
to get an impression how long wide character handling is available.
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and return a list of names with sections, used by apropos(1) for display.
While here, improve uniformity of the interface by allocating the file
name dynamically, just like the names list and the description.
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We are not going back to Berkeley DB and don't care about
overwriting any obsolete files that may be lying around.
So, go back from "mandocdb.db" to "mandoc.db".
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Consistently use the PATH_MAX since it is specified by POSIX,
while MAXPATHLEN is not.
In preparation for using this at a few more places.
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(via mansearch), and merge mandocdb.h into mansearch.h (and remove).
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This is a much more minimal interface that stuffs all operations into
a single function.
It uses sqlite3 and ohash.
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Ingo Schwarze
Kristaps Dzonsons