c1104500

Final polish: restore SIGUSR1 under visibility gate, drop unused import

a73x   2026-04-16 19:05

- SIGUSR1 stats dump moved above the render gate in runTerminal so it
  fires even while the surface is hidden (regression from the gate
  migration).
- Remove unused `const wl` import from src/frame_loop.zig; the module
  doesn't reference wl directly — adapter casts happen in wayland.zig.

---

diff --git a/src/frame_loop.zig b/src/frame_loop.zig
index 46a2c21..3624b38 100644
--- a/src/frame_loop.zig
+++ b/src/frame_loop.zig
@@ -1,5 +1,4 @@
const std = @import("std");
const wl = @import("wayland").client.wl;
const scale_tracker = @import("scale_tracker");

// Mirror of wayland.SurfaceState. Using a structural duplicate here instead of
diff --git a/src/main.zig b/src/main.zig
index 0c90551..cac9e5a 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -342,6 +342,13 @@ fn runTerminal(alloc: std.mem.Allocator) !void {
            render_pending = true;
        }

        // Stats dump is valid regardless of visibility — fires even while
        // the surface is hidden, so an operator can SIGUSR1 a stuck-seeming
        // waystty and get a response.
        if (sigusr1_received.swap(false, .acq_rel)) {
            printFrameStats(computeFrameStats(&frame_ring));
        }

        if (!shouldRenderFrame(render_pending, false, false)) continue;
        if (!bench_unthrottled and !frame_loop.canRender()) continue; // hidden — no Vulkan at all

@@ -617,11 +624,6 @@ fn runTerminal(alloc: std.mem.Allocator) !void {

        frame_ring.push(frame_timing);

        // Check for SIGUSR1 stats dump request
        if (sigusr1_received.swap(false, .acq_rel)) {
            printFrameStats(computeFrameStats(&frame_ring));
        }

        clearConsumedDirtyFlags(&term.render_state.dirty, dirty_rows, refresh_plan);
        if (!bench_unthrottled) try frame_loop.commitRender();
        render_pending = false;