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Chinesezjc
1103e36c22
The reap-poll deadline arm sent SIGKILL then finalized immediately, declaring quiescence on mere signal delivery while the group was still dying. It now keeps polling for the group to actually empty (bounded by one more reap margin) after its self-sent SIGKILL, so `finished` resolves only on a confirmed-empty group. ProtocolChannel.read_frame read the boot/run handshake frames through FileIO.readline() on the unbuffered fd — one os.read(1) per byte, so a multi-megabyte program burned CPU (RLIMIT_CPU already in force for the run frame) in millions of syscalls before ast.parse. It now reads in chunks into the same _pending buffer the async reader uses; the wrapping os.fdopen is gone. read_frame is this PR's own code (e7f22ed3), not the protocol layer. The chunked read is a syscall-count improvement with no cross-platform-deterministic failure to assert, noted as such in the Agent Note.