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tvdos: concurrency and VT

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minjaesong
2026-06-03 20:49:59 +09:00
parent dad345c027
commit a9d095e3cb
6 changed files with 743 additions and 22 deletions
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42
assets/disk0/tvdos/bin/command.js
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@@ -30,7 +30,18 @@ function makeHash() {
const shellID = makeHash()
function print_prompt_text() {
// VT pane indicator: shown for VT 2..6, not VT 1 (the default) so the
// unmodified prompt is what users see when they never touch virtual
// consoles. VT_NUM is set by vtmgr's pane bootstrap.
let vtPrefix = ""
if (typeof VT_NUM !== "undefined" && VT_NUM > 1) vtPrefix = "[" + VT_NUM + "] "
if (goFancy) {
if (vtPrefix) {
con.color_pair(161,253)
print(`\u00DD${VT_NUM}`)
con.color_pair(253,161)
con.addch(16);con.curs_right()
}
con.color_pair(239,161)
print(" "+CURRENT_DRIVE+":")
con.color_pair(161,253)
@@ -49,9 +60,9 @@ function print_prompt_text() {
else {
// con.color_pair(253,255)
if (errorlevel != 0 && errorlevel != "undefined" && errorlevel != undefined)
print(CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + " [" + errorlevel + "]" + PROMPT_TEXT)
print(vtPrefix + CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + " [" + errorlevel + "]" + PROMPT_TEXT)
else
print(CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT)
print(vtPrefix + CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT)
}
}
@@ -620,6 +631,21 @@ shell.coreutils = {
},
panic: function(args) {
throw Error("Panicking command.js")
},
chvt: function(args) {
// Request a switch to another virtual console. Only meaningful when
// running inside a pane spawned by vtmgr (VT_CTRL_ADDR is set by the
// pane bootstrap). Outside that environment this is a no-op error.
if (args[1] === undefined) { printerrln("Usage: chvt N (1..6)"); return 1 }
let n = parseInt(args[1])
if (isNaN(n) || n < 1 || n > 6) { printerrln("chvt: N must be in 1..6"); return 1 }
if (typeof VT_CTRL_ADDR === "undefined") {
printerrln("chvt: not running under vtmgr (no VT context)"); return 1
}
// CTRL_SWITCH_REQUEST is byte +1 of the shared CTRL area. Dispatcher
// picks this up on its next 30 Hz tick and performs the switch.
sys.poke(VT_CTRL_ADDR + 1, n)
return 0
}
}
// define command aliases here
@@ -636,10 +662,14 @@ shell.coreutils.where = shell.coreutils.which
Object.freeze(shell.coreutils)
shell.stdio = {
out: {
print: function(s) { sys.print(s) },
println: function(s) { if (s === undefined) sys.print("\n"); else sys.print(s+"\n") },
printerr: function(s) { sys.print("\x1B[31m"+s+"\x1B[m") },
printerrln: function(s) { if (s === undefined) sys.print("\n"); else sys.print("\x1B[31m"+s+"\x1B[m\n") },
// When running inside a vtmgr virtual console, __VT_OUT routes output
// to the pane's text-plane buffer instead of the physical GPU (which
// the compositor would otherwise overwrite). Outside a VT the hook is
// absent and these fall through to sys.print exactly as before.
print: function(s) { if (globalThis.__VT_OUT) globalThis.__VT_OUT.print(s); else sys.print(s) },
println: function(s) { if (globalThis.__VT_OUT) globalThis.__VT_OUT.println(s); else { if (s === undefined) sys.print("\n"); else sys.print(s+"\n") } },
printerr: function(s) { if (globalThis.__VT_OUT) globalThis.__VT_OUT.printerr(s); else sys.print("\x1B[31m"+s+"\x1B[m") },
printerrln: function(s) { if (globalThis.__VT_OUT) globalThis.__VT_OUT.printerrln(s); else { if (s === undefined) sys.print("\n"); else sys.print("\x1B[31m"+s+"\x1B[m\n") } },
},
pipe: {
print: function(s) { if (shell.getPipe() === undefined) throw Error("No pipe opened"); shell.appendToCurrentPipe(s); },