2178d6a70c
A maintainable, extensible BitTorrent client (C11, Linux/io_uring) targeting 10 GbE saturation. All torrent functionality is built from scratch; liburing is the only linked third-party dependency on the data path. Implements Phases 1-7 of the roadmap: - core: page-aligned buffer pool, MPMC/Treiber queues, bitfields, worker pool - crypto: SHA-1/256 (SHA-NI + scalar), Merkle (BEP-52), RC4 (MSE) - bencode/metainfo: zero-copy parser, v1/v2/hybrid .torrent + magnet - peer: sans-IO wire codec, MSE/PE handshake state machine, BEP-10, ut_metadata, PEX - piece/storage: block-level multi-peer engine, rarest-first + endgame, per-file completion events + single-file relocate (move-as-you-finish) - tracker/dht: HTTP + UDP (BEP-15) trackers, BEP-5 KRPC iterative lookup - platform: io_uring reactor (SQPOLL, registered buffers, SEND_ZC) - surface: versioned RPC, native plugin ABI, sandboxed Lua scripting, nautd/nautctl Verified against libtorrent (single/multi/hybrid, MSE, magnet-via-DHT, swarm); unit + interop tests green; ASan/UBSan/TSan clean. Scripting reference in docs/scripting.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/* Hash throughput bench — the Phase 2 gate (SHA-256 >= 1.5 GB/s/core). */
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#include "naut/hash.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static double now(void) {
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struct timespec t; clock_gettime(CLOCK_MONOTONIC, &t);
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return t.tv_sec + t.tv_nsec * 1e-9;
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}
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static double bench(const char *name, void (*h)(const void *, size_t, uint8_t *),
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uint8_t *buf, size_t len, int iters, int outlen) {
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uint8_t out[32];
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/* warm */
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h(buf, len, out);
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double t0 = now();
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for (int i = 0; i < iters; i++) h(buf, len, out);
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double dt = now() - t0;
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double gb = (double)len * iters / 1e9;
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printf(" %-10s %6.2f GB/s (%d-byte digest)\n", name, gb / dt, outlen);
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return gb / dt;
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}
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static void s1(const void *d, size_t n, uint8_t *o) { naut_sha1(d, n, o); }
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static void s256(const void *d, size_t n, uint8_t *o) { naut_sha256(d, n, o); }
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int main(int argc, char **argv) {
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size_t len = (argc > 1) ? (size_t)atoll(argv[1]) * 1024 * 1024 : 256u * 1024 * 1024;
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int iters = (argc > 2) ? atoi(argv[2]) : 8;
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uint8_t *buf = malloc(len);
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if (!buf) { perror("malloc"); return 1; }
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memset(buf, 0xa5, len);
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printf("buffer %zu MiB x %d iters | sha256 backend: %s\n",
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len >> 20, iters, naut_sha256_backend());
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double s256_gbs = bench("sha256", s256, buf, len, iters, 32);
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bench("sha1", s1, buf, len, iters, 20);
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free(buf);
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/* gate: a single core must clear the 1.25 GB/s line rate with margin */
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if (s256_gbs < 1.5) {
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fprintf(stderr, "GATE FAIL: sha256 %.2f GB/s < 1.5 GB/s\n", s256_gbs);
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return 1;
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}
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printf("GATE PASS: sha256 %.2f GB/s >= 1.5 GB/s\n", s256_gbs);
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return 0;
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}
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