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dont let the clunk queue grow too large if we are allowed to
block (cclose) as the fileserver might run out of fids.
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newproc() didnt zero parentpid and kproc() didnt set it, so
kprocs ended up with random parent pid. this is harmless as
kprocs have no up->parent but it gives confusing results in
pstree(1).
now we zero parentpid in newproc(), and set it in sysrfork()
unless RFNOWAIT has been set.
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assuming that this check tried to prevent the hostowner
from killing init, it is silly because init would just
handle the note.
with kbdfs, we actually want to send interrupt note to
the initial process group so instead of working arround
this with rfork(RFNOTEG|RFNAMEG), we remove the check.
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these changes make the interrupt key available in the
console (before rio is started).
kbdfs: will now send a "interrupt" note to its invoking
process group in cooked mode.
bootrc: is now prepared to handle interrupts, mainly to
not accidently spawn a new bootargs prompt.
init: forwards the interrupt to the cpurc/termrc pgrp.
vncs: shields itself from kbdfs notegroup so interrrupt
wont kill the whole vnc session.
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there are no pool calls/data structures used in
libmemlayer so the dependency can be removed.
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functional identical, but uses different data structure.
instead of reading all words into memory, we read and
tokenize on demand keeping a simple linked list of words
to conume by further calls of getword(). once the list
is empty we read the next line, tokenize it and fill the
list up again. so we only need as mutch memory to hold
all the words of the longest line.
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procopen.
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we can't really change the Window *input from
outside the winctl() thread. the problem is
that the window might end up reading the
mouse (scroll, select) which makes the w->cctl
channel block once you try to talk to the
window again (from the mousethread). this also
means we have to coordinate window switchin
from the winctl proc waiting for the current
window to release the input and then take over.
thers a new Winctl message Topped that basically
does that now using Wakeup and a chan to
synchronize.
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wrepaint() used to also set the cursor for the window
if it was current. this reset the corner cursors on
bandresize when one tried to attempt to size a window
that was not current. make repaint just repaint the
window and border. set cursor explicitely for hold
toggle.
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use notefd in killprocs() insead of postnote() as the process
might'v exited. the notefd stays valid even if the particular
process it was originaly opend on exited. remove the Window.pid
field as its not needed.
dup() the notefd for interruptproc as the window might'v gone
away and closed the notefd file descriptor, resulting in us
writing to the wrong thing.
use snprint() instead of sprint() for safety.
fix bogus debug fprint().
add missing "visible" flushimage() after Reshaped winctl message
got handled. i assumed wsetname()/nameimage() would be enough,
it but does a invisible flush so softscreen doesnt get updated
immidiately.
do not make allocimage() failure in scrtemps() fatal. it wont
draw the window properly, but it gives the user a chance to
delete some windows to recover.
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allocate all the colors in iconinit(), remove unused ones
like grey. rename darkgrey to paletextcol because thats
what it is used for. new approach to window image allocation.
we allocate the window with DNofill and let the window fill
itself. this reduces flickering especially with (-b) option
and makes rio resize feel a lot faster.
wrefresh() didnt work. now fixed.
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wtop() checked w->topped == topped as a fast exit. if you
had the top most window not being current (== input) which
can happen when you delete the current window, then wtop would
after resize would not make the window current because it
is already top topmost one. wtopme() and wcurrent() both are
non-ops when window is already the topmost or window is already
current, so remove the check as its not needed. also topping
the window feels less sluggish.
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sort the window array by w->topped before reshaping all
windows. this preserves the window z-order.
remove implicit focus change on reshape/move. it called
wcurrent() in wtcl thread which might send a wctl message
to itself, bad... also we might not want to change focus
on reshape, like for the rio resize. so we set the input
window explicitely in all call sites.
window deletion was racy. wclosewin() destroys w->i, but
it is called outside the wctl thread so it might just
free the image under libframe doing some text selection.
this is fixed the following: add wclunk() function,
which basically just marks the window as deleted and
removes the reference from the window[] and hidden[]
arrays. (called on wclose() when refcount drops to
zero). wclosewin() now just frees the image and is only
called from the wctl thread on exit or when handing
the Deleted message.
get a reference to the window when doing sweeping or
moving as the filesystem might just clunk it under
us and we might end up sending wctl messages to
a Exited window.
wctl resize message has to fail if the window is not
current as it might be hidden... would also be annoying.
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this is to catch crazy color channels like k8a8 and the 15/16 bit
ones and CMAP. basically, just convert to RGBA32 or RGB24 depending
on if it has an alpha channel.
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as the menu is displayed, the window might go away or change its
label causing menuhit() to dereference bad memory. just strdup()
the labels before passing to menu3str to prevent accidents.
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