mirror of
https://github.com/saphid/frame-control.git
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65 lines
3.2 KiB
Python
65 lines
3.2 KiB
Python
"""Frozen regression trace from the original mac-in-headset Swift controller.
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The 600-state reference was produced at 1b90c64, before the C extraction:
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60 seconds with a slow/congested middle, then recovery. No generated behavior
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from the new implementation is used to calculate the expected digest.
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"""
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import ctypes as C
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import hashlib
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import json
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from pathlib import Path
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import shutil
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import subprocess
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import sys
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import tempfile
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import unittest
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ROOT = Path(__file__).resolve().parent.parent
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sys.path.insert(0, str(ROOT / 'ui'))
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from frame_pc_capture import Controller
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class ControllerTrace(unittest.TestCase):
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def test_original_mac_congestion_and_recovery(self):
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cc = shutil.which('cc') or shutil.which('gcc')
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if not cc:
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self.skipTest('C compiler not installed; native build jobs cover this trace')
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with tempfile.TemporaryDirectory() as tmp:
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path = Path(tmp) / ('trace.dll' if sys.platform == 'win32' else 'trace.so')
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subprocess.run([cc, '-O2', '-shared', '-fPIC', str(ROOT/'desktop/controller.c'), '-o', str(path)], check=True, capture_output=True)
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lib = C.CDLL(str(path))
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sig = {'new': (C.c_void_p, [C.c_int, C.c_int]), 'free': (None, [C.c_void_p]),
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'ceiling': (None, [C.c_void_p, C.c_int]), 'value': (C.c_int64, [C.c_void_p, C.c_int]),
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'capture': (None, [C.c_void_p, C.c_int64]), 'gate': (C.c_int, [C.c_void_p, C.c_int64, C.c_int]),
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'sent': (None, [C.c_void_p, C.c_uint32, C.c_int, C.c_int64]),
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'ack': (C.c_int, [C.c_void_p, C.c_uint32, C.c_int64]), 'update': (C.c_int, [C.c_void_p, C.c_int64])}
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for name, (ret, args) in sig.items():
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fn = getattr(lib, 'fc_'+name)
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fn.restype, fn.argtypes = ret, args
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c = Controller(lib, 60, 8000000)
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due, states, seq = [], [], 0
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try:
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for tick in range(6000):
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now = 10000000+tick*10000
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for t, s in due:
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if t <= now:
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c.call('ack', s, now)
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due = [(t, s) for t, s in due if t > now]
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if tick % 2 == 0:
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c.call('capture', now)
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if c.call('gate', now, 1):
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seq += 1
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c.call('sent', seq, 8000 if tick < 1000 or tick > 4000 else 22000, now)
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due.append((now+(240000 if 1500 < tick < 3500 else 20000), seq))
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if tick % 10 == 0:
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c.update(now)
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x = c.state()
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states.append([x[k] for k in ('target', 'ceiling', 'tier', 'fps', 'inFlight')] +
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[round(x['scale']*100), round(x['baseRtt']*1000), round(x['slack']*1000)])
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digest = hashlib.sha256(json.dumps(states, separators=(',', ':')).encode()).hexdigest()
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self.assertEqual(digest, '1932f16aafce5c9157bcd2aba5d90719a366f9999422920aaeae78a6cdec08f6')
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finally:
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c.close()
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if sys.platform == 'win32':
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import _ctypes
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_ctypes.FreeLibrary(lib._handle)
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