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liburing
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test/nop-all-sizes.c
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godzie44
test/nop-all-sizes.c: del some unnecessary checks
23 сен 2021, 13:33
23 сен 2021, 13:33
f8caf73
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/* SPDX-License-Identifier: MIT */ /* * Description: exercise full filling of SQ and CQ ring * */ #include <errno.h> #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> #include "liburing.h" #define MAX_ENTRIES 32768 static int fill_nops(struct io_uring *ring) { struct io_uring_sqe *sqe; int filled = 0; do { sqe = io_uring_get_sqe(ring); if (!sqe) break; io_uring_prep_nop(sqe); filled++; } while (1); return filled; } static int test_nops(struct io_uring *ring) { struct io_uring_cqe *cqe; int ret, nr, total = 0, i; nr = fill_nops(ring); ret = io_uring_submit(ring); if (ret != nr) { fprintf(stderr, "submit %d, wanted %d\n", ret, nr); goto err; } total += ret; nr = fill_nops(ring); ret = io_uring_submit(ring); if (ret != nr) { fprintf(stderr, "submit %d, wanted %d\n", ret, nr); goto err; } total += ret; for (i = 0; i < total; i++) { ret = io_uring_wait_cqe(ring, &cqe); if (ret < 0) { fprintf(stderr, "wait completion %d\n", ret); goto err; } io_uring_cqe_seen(ring, cqe); } return 0; err: return 1; } int main(int argc, char *argv[]) { struct io_uring ring; int ret, depth; if (argc > 1) return 0; depth = 1; while (depth <= MAX_ENTRIES) { ret = io_uring_queue_init(depth, &ring, 0); if (ret) { if (ret == -ENOMEM) break; fprintf(stderr, "ring setup failed: %d\n", ret); return 1; } ret = test_nops(&ring); if (ret) { fprintf(stderr, "test_single_nop failed\n"); return ret; } depth <<= 1; io_uring_queue_exit(&ring); } return 0; }