1bb4963ff0
While chasing the draw-stream question I found THREE xenia instances running simultaneously (started 15:39, 15:44, 16:12), which violates the "one emulator at a time" hard rule and confounds the finding I recorded last iteration. All three read the same /tmp/xenia_pad.txt and share display :98. A press written to that file is delivered to EVERY instance, while `screenshot` grabs whichever window is topmost -- not necessarily the one that acted on it. So "(A) was delivered and the screen did not change" may simply be two different emulators, and the keystroke-level confirmation proves only that SOME instance received it. The navigation.md entry claiming the boot title's "2 of 2" is no longer 2 of 2 is withdrawn as unsupported, pending a clean re-run. The cause was mine. run-canary's lockfile is the IMPLEMENTATION of the one-at-a- time rule; a kill -9 orphans it, and the obvious unblock -- rm -f the lock -- also disables the guard for every later launch. I did that more than once today. METHOD gains two entries. A lockfile is the rule, not an obstacle to it: clear a stale lock only after confirming zero live instances, and COUNT them rather than trusting a kill landed, because a plain kill is asynchronous and a -9 on a stuck process can take seconds. When a guard blocks you, the question is whether the condition it guards against is present, not how to remove the guard. And a third instance of pgrep -f matching the shell that runs it -- this time it killed a cleanup command halfway through, leaving the emulators alive and the lock in place. Already recorded for wait-loops; promoted to "reach for -C first". Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
53 lines
1.7 KiB
Python
Executable File
53 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Block until the title's Ⓐ-plate says the screen has SETTLED, then exit 0.
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The same gate `jp_title_capture.py` uses: the green plate glyph count inside a
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band, HELD for 12 consecutive samples (~3 s at 4 fps). A single `screen_id.py`
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classification is not enough -- it fires on the ATTRACT loop's title, which
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accepts no input, and a probe that pressed Ⓐ there concluded nothing for 484 s.
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Exit 0 when settled, 2 on timeout.
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wait_plate_pulse.py [wait_s]
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"""
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import subprocess
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import sys
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import time
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import numpy as np
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W, H = 1280, 720
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NEED, CEIL, HOLD = 500, 2500, 12
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WAIT = float(sys.argv[1]) if len(sys.argv) > 1 else 900
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def _open():
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return subprocess.Popen(
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["ffmpeg", "-loglevel", "error", "-f", "x11grab", "-draw_mouse", "0",
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"-video_size", f"{W}x{H}", "-i", ":98", "-r", "4",
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"-f", "rawvideo", "-pix_fmt", "rgb24", "-"],
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stdout=subprocess.PIPE, bufsize=W * H * 3 * 2)
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def glyph(a):
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r, g, b = a[:, :, 0], a[:, :, 1], a[:, :, 2]
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return int(((g > 130) & (g - r > 45) & (g - b > 45)).sum())
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T0 = time.time()
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p, n, seg, streak = _open(), W * H * 3, time.time(), 0
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while time.time() - T0 < WAIT:
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if time.time() - seg > 30:
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p.kill(); p = _open(); seg = time.time()
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buf = p.stdout.read(n)
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if len(buf) < n:
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p.kill(); p = _open(); seg = time.time(); continue
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c = glyph(np.frombuffer(buf, np.uint8).reshape(H, W, 3).astype(int))
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streak = streak + 1 if NEED <= c <= CEIL else 0
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if streak >= HOLD:
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print(f"[{time.time()-T0:7.1f}s] TITLE SETTLED (plate pulse, glyph {c})", flush=True)
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p.kill(); raise SystemExit(0)
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p.kill()
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print("TIMEOUT — the title never settled", flush=True)
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raise SystemExit(2)
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