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>
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#include "naut/mpmc.h"
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#include "test.h"
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#include <pthread.h>
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/* Many producers and many consumers pass tagged integers through the queue;
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* verify nothing is lost or duplicated. */
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#define CAP 1024
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#define NPROD 4
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#define NCONS 4
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#define PER_PROD 100000
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static naut_mpmc q;
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static _Atomic long produced_sum, consumed_sum;
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static _Atomic int consumed_cnt;
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static _Atomic int prod_done;
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static void *producer(void *arg) {
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long base = (long)(intptr_t)arg * PER_PROD + 1;
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for (long i = 0; i < PER_PROD; i++) {
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long v = base + i;
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while (!naut_mpmc_push(&q, (void *)(intptr_t)v)) sched_yield();
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atomic_fetch_add(&produced_sum, v);
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}
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atomic_fetch_add(&prod_done, 1);
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return NULL;
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}
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static void *consumer(void *arg) {
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(void)arg;
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void *p;
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for (;;) {
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if (naut_mpmc_pop(&q, &p)) {
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atomic_fetch_add(&consumed_sum, (long)(intptr_t)p);
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atomic_fetch_add(&consumed_cnt, 1);
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} else if (atomic_load(&prod_done) == NPROD) {
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if (!naut_mpmc_pop(&q, &p)) break; /* drained */
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atomic_fetch_add(&consumed_sum, (long)(intptr_t)p);
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atomic_fetch_add(&consumed_cnt, 1);
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} else {
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sched_yield();
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}
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}
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return NULL;
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}
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int main(void) {
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CHECK(naut_mpmc_init(&q, CAP) == NAUT_OK);
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CHECK(naut_mpmc_init(&q, 1000) == NAUT_ERR_INVAL); /* not pow2 */
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pthread_t pr[NPROD], co[NCONS];
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for (int i = 0; i < NCONS; i++) pthread_create(&co[i], NULL, consumer, NULL);
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for (int i = 0; i < NPROD; i++)
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pthread_create(&pr[i], NULL, producer, (void *)(intptr_t)i);
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for (int i = 0; i < NPROD; i++) pthread_join(pr[i], NULL);
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for (int i = 0; i < NCONS; i++) pthread_join(co[i], NULL);
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CHECK_EQ(atomic_load(&consumed_cnt), NPROD * PER_PROD);
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CHECK_EQ(atomic_load(&consumed_sum), atomic_load(&produced_sum));
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naut_mpmc_destroy(&q);
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TEST_MAIN_END();
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}
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