22b6541cd9
A pilot-only run froze at t~150.7s (frozen.py: max_pixel_delta=0), found by accident when the sweep-free experiment aborted at startup and the run flew with no script probe attached. The tally is now 3-of-3 frozen with the probe versus 1-of-3 without, not 3-versus-0. Still a lean, but not the clean separation the previous entry claimed, and marked down accordingly -- the fourth time a freeze conclusion here has had to be softened by one more run. The sweep-free test itself could not run: ScriptMission is re-allocated per run, so the address from an earlier run (0xBC7A2A20) read back all zeros. The cheap self-consistency check ([m+44] must equal the phase's [+244]) rejected it instead of reporting garbage, which is the part that worked. Names the cheaper replacement: a BOUNDED pointer scan. Every ScriptMission seen so far sits in 0xBC79xxxx-0xBC7Axxxx, so ~32MB instead of ~371MB would cut the sweep cost roughly tenfold. Not yet implemented.
101 lines
4.2 KiB
Python
101 lines
4.2 KiB
Python
#!/usr/bin/env python3
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"""Watch the REAL phase counter and every squadron's state, together.
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Three earlier runs polled `[*(0x828F35F8)+236]` and saw 0 forever -- that mirror
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is only written once the ordinal exceeds 1 (script-runtime-probe.md). This reads
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`[ScriptMission+40]`, the counter itself, plus the per-unit records the phase
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conditions actually test, so a phase advance and the state change that caused it
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are visible in one sample.
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It also does two things the earlier probes had to learn the hard way:
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* witnesses the freeze every 60 s (a frozen guest produces a perfectly
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clean-looking negative -- see mission-freeze-resume-spin.md);
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* re-locates the ScriptMission if the pointer stops validating, rather than
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silently reporting stale numbers.
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`--mission 0x...` skips the two full guest-memory sweeps `find_mission()` does
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and validates the given address with a handful of reads instead. That exists
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because the sweeps are the leading suspect for the in-mission freeze: runs with
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this probe attached froze at ~70/126/253 s, while the same runs without it went
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936 s and 1064 s clean (mission-freeze-resume-spin.md). Sweep-free mode is the
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experiment that separates "the sweeps do it" from "the per-sample reads do it".
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Usage: phase_watch.py <Stage02.ssb> [secs] [every_s] [--mission 0xADDR]
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"""
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import os
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import sys
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import time
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sys.path.insert(0, __file__.rsplit('/', 1)[0])
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import gmem
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import isl
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import squadron_state as S
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WATCH = ['ADN110', 'ADN111', 'ADN112']
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def main():
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ssb = isl.load(sys.argv[1])
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sym2 = isl.symbols(ssb, 2)
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secs = float(sys.argv[2]) if len(sys.argv) > 2 else 900
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every = float(sys.argv[3]) if len(sys.argv) > 3 else 5
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given = None
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if '--mission' in sys.argv:
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given = int(sys.argv[sys.argv.index('--mission') + 1], 0)
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path = gmem.mem_path()
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size = os.path.getsize(path)
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import frozen
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t0 = time.time()
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with open(path, 'rb', buffering=0) as f:
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if given is not None:
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# Validate WITHOUT sweeping: the mission's symtab1 pointer must equal
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# the phase's, and the code base must be a plausible pointer. Both
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# are self-consistency checks internal to the two objects, so they
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# cost four reads instead of two full scans.
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code = S.u32(f, given + 24)
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s44 = S.u32(f, given + 44)
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ph = S.u32(f, given + 4)
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p244 = S.u32(f, ph + 244) if ph else None
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ok = (code and 0x10000 <= code < 0xFFFFFFF0 and s44 and s44 == p244)
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if not ok:
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print('given ScriptMission 0x%08X does not validate '
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'(code=%s s44=%s phase244=%s)' % (given, code, s44, p244))
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return 1
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m, fb = given, None
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print('ScriptMission 0x%08X (given, validated, NO sweeps)' % m, flush=True)
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else:
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m, fb = S.find_mission(f, size, ssb)
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if m is None:
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print('ScriptMission not located'); return 1
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print('file base 0x%08X ScriptMission 0x%08X' % (fb, m), flush=True)
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last = None
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next_frozen = 0.0
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while time.time() - t0 < secs:
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now = time.time() - t0
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if now >= next_frozen:
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next_frozen = now + 60
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try:
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dead, _ = frozen.frozen(5.0)
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except Exception:
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dead = False
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if dead:
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print(' [%6.1fs] *** GUEST FROZEN -- readings below are about '
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'a dead world ***' % now, flush=True)
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r = S.read_states(f, m, sym2, WATCH)
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key = (r['phase_ordinal'], r['finished'], r['active_records'],
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tuple((n, (v or {}).get('state')) for n, v in r['units'].items()))
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if key != last:
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print(' [%6.1fs] phase=%s finished=%s active=%3d %s' % (
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now, r['phase_ordinal'], r['finished'], r['active_records'],
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' '.join('%s:%s' % (n, (v or {}).get('state'))
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for n, v in r['units'].items())), flush=True)
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last = key
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time.sleep(every)
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print('done', flush=True)
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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