diff options
| author | Gabriel Schneider <[email protected]> | 2026-09-30 14:25:52 -0300 |
|---|---|---|
| committer | Gabriel Schneider <[email protected]> | 2026-10-01 00:12:17 -0300 |
| commit | 1d0f8cd158bb47941c0187d32422787c92e8feeb (patch) | |
| tree | b7f6806cc431c5e2339cdd4887405275a6f2c635 /src/host_io.zig | |
| parent | 69c5e62fe45a3768edff14993789f2aadfafadec (diff) | |
| download | pardes-1d0f8cd158bb47941c0187d32422787c92e8feeb.tar.gz pardes-1d0f8cd158bb47941c0187d32422787c92e8feeb.zip | |
A detached session no client watches draws no frames: yes | head -c 50M through pty/run goes from over 30 s to 11 s
Profiling the 50 MB run showed 70% of its time in draw.render,
recolorAnsi alone 43%, walking cells through PageList.pin. The detached
session drew a frame after every pty read, with no client attached to
see it. A host now says whether anyone watches (Host.VTable.watched). The
detached server answers whether a client is attached, and while none is
the core keeps the frame owed instead of drawing it. A /screen read draws
its own, and a client attaching gets one (hello sets needs_frame).
Debug, 80x24: 10 MB went from 7.36 s to 2.10 s, and 50 MB from over the
30 s client timeout (about 37 s by rate) to 11.08 s. What is left is the
terminal's own parsing and scrollback growth. A session a frontend shows
still draws after every read. Pacing those frames is the next step if
that case matters.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Diffstat (limited to 'src/host_io.zig')
| -rw-r--r-- | src/host_io.zig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/host_io.zig b/src/host_io.zig index ac25e63c..c8c537b9 100644 --- a/src/host_io.zig +++ b/src/host_io.zig @@ -19,6 +19,10 @@ pub const Host = struct { present: ?*const fn (ctx: ?*anyopaque, surface: *const pardes.Surface) void = null, post_present: ?*const fn (ctx: ?*anyopaque) void = null, poll_frame: ?*const fn (ctx: ?*anyopaque) void = null, + /// Whether anyone sees a frame drawn now. A detached session with no + /// client attached draws none (a /screen read draws its own), and + /// the frame owed is drawn when one attaches. Absent: always. + watched: ?*const fn (ctx: ?*anyopaque) bool = null, detach: ?*const fn (ctx: ?*anyopaque) void = null, spawn: ?*const fn (ctx: ?*anyopaque, pane: u8, cwd: []const u8) void = null, pty_write: ?*const fn (ctx: ?*anyopaque, pane: u8, bytes: []const u8) void = null, |