cinap_lenrek 064ea89caa libdraw: avoid deadlock for mouse ioproc sending on resizec ... a deadlock has been observed with samterm (thanks burnzez), that shows the mouse ioproc being stuck in sending on the resize channel, while the mouse consumer is stuck in a readmouse() loop wanting a rectangle to be drawn by the user: recv(v=0x42df50)+0x28 /sys/src/libthread/channel.c:321 readmouse(mc=0x42df50)+0x54 /sys/src/libdraw/mouse.c:34 getrect(.ret=0x41bce0,but=0x4,mc=0x42df50)+0x62 /sys/src/libdraw/getrect.c:49 r=0x41bc70 rc=0x41bc70 getr(rp=0x41bce0)+0x24 /sys/src/cmd/samterm/main.c:244 p=0x6b000004f6 r=0x2 sweeptext(new=0x0,tag=0x2d)+0x12 /sys/src/cmd/samterm/menu.c:208 r=0x2 t=0x42df50 inmesg(type=0x2,count=0x2)+0x1ab /sys/src/cmd/samterm/mesg.c:136 m=0x10000002d l=0x2d00001b00 i=0x43829000000001 t=0x438290 lp=0x42e050 rcv()+0x7a /sys/src/cmd/samterm/mesg.c:77 threadmain(argv=0x7ffffeffef90)+0x173 /sys/src/cmd/samterm/main.c:63 so avoid blocking in the mouse ioproc by using nbsend() instead of send() for writing to the resize channel.		2018-11-18 03:37:04 +01:00
..
alloc.c
allocimagemix.c
arith.c
badrect.c
bezier.c
border.c
buildfont.c
bytesperline.c
chan.c
cloadimage.c
computil.c
creadimage.c
debug.c
defont.c
draw.c
drawrepl.c
eenter.c
egetrect.c
ellipse.c
emenuhit.c
enter.c
event.c
fmt.c
font.c
freesubfont.c
getdefont.c
getrect.c
getsubfont.c
icossin.c
icossin2.c
init.c	libdraw: cannot happen	2018-11-08 16:56:34 +01:00
keyboard.c
line.c
loadimage.c
makefile
menuhit.c
mkfile
mkfont.c
mouse.c	libdraw: avoid deadlock for mouse ioproc sending on resizec	2018-11-18 03:37:04 +01:00
newwindow.c
openfont.c
poly.c
readcolmap.c
readimage.c
readsubfont.c
rectclip.c
replclipr.c
rgb.c
scroll.c
string.c
stringbg.c
stringsubfont.c
stringwidth.c
subfont.c
subfontcache.c
subfontname.c
test.c
unloadimage.c
window.c
writecolmap.c
writeimage.c
writesubfont.c