OC-PsychOS2/module/dispmanager.lua

52 lines
1.3 KiB
Lua
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do
local tG,ttyn = {}, 0
local function checkUnused(addr) -- returns false if a screen *addr* is already allocated to a GPU
for k,v in pairs(tG) do
if v == addr then
return false
end
end
return true
end
local function findNextDisplay() -- finds the next available screen, or nil if there are no available screens
for a,_ in component.list("screen") do
if checkUnused(a) then
return a
end
end
return nil
end
for file in ipairs(fs.list("/boot/cfg/disp/") or {}) do -- allows files in /boot/cfg/disp with filenames as GPU addresses to bind to specific screens
if component.proxy(file) then
local f = io.open("/boot/cfg/disp/"..file)
if f then
local sA = file:read()
if checkUnused(sA) then
tG[file] = sA
end
f:close()
end
end
end
for a,_ in component.list("gpu") do -- allocate a screen to every unused GPU
tG[a] = findNextDisplay()
end
for gpu,screen in pairs(tG) do
local r,w = vtemu(gpu,screen)
iofs.register("tty"..tostring(ttyn),function() return r,w,function() w("\27[2J\27[H") end end)
local f = io.open("/iofs/tty"..tostring(ttyn),"rw")
fd[f.fd].t = "t"
ttyn = ttyn + 1
end
do
iofs.register("syslog",function() return function() return "" end, function(msg) syslog(msg,nil,tTasks[cPid].n) end, function() return true end end)
end
if #fd < 1 then
io.open("/iofs/syslog","rw")
end
end