* Test that we return to userspace if a timeout triggers, even if we * don't satisfy the number of events asked for. */
| 51 | * don't satisfy the number of events asked for. |
| 52 | */ |
| 53 | static int test_single_timeout_many(struct io_uring *ring, bool immediate) |
| 54 | { |
| 55 | struct io_uring_cqe *cqe; |
| 56 | struct io_uring_sqe *sqe; |
| 57 | unsigned long long exp; |
| 58 | struct __kernel_timespec ts; |
| 59 | struct timeval tv; |
| 60 | int ret; |
| 61 | |
| 62 | sqe = io_uring_get_sqe(ring); |
| 63 | if (!sqe) { |
| 64 | fprintf(stderr, "%s: get sqe failed\n", __FUNCTION__); |
| 65 | goto err; |
| 66 | } |
| 67 | |
| 68 | msec_to_ts(&ts, TIMEOUT_MSEC); |
| 69 | t_prep_timeout(sqe, &ts, 0, immediate); |
| 70 | |
| 71 | ret = io_uring_submit(ring); |
| 72 | if (ret <= 0) { |
| 73 | fprintf(stderr, "%s: sqe submit failed: %d\n", __FUNCTION__, ret); |
| 74 | goto err; |
| 75 | } |
| 76 | |
| 77 | gettimeofday(&tv, NULL); |
| 78 | ret = __sys_io_uring_enter(ring->ring_fd, 0, 4, IORING_ENTER_GETEVENTS, |
| 79 | NULL); |
| 80 | if (ret < 0) { |
| 81 | fprintf(stderr, "%s: io_uring_enter %d\n", __FUNCTION__, ret); |
| 82 | goto err; |
| 83 | } |
| 84 | |
| 85 | ret = io_uring_wait_cqe(ring, &cqe); |
| 86 | if (ret < 0) { |
| 87 | fprintf(stderr, "%s: wait completion %d\n", __FUNCTION__, ret); |
| 88 | goto err; |
| 89 | } |
| 90 | ret = cqe->res; |
| 91 | io_uring_cqe_seen(ring, cqe); |
| 92 | if (ret == -EINVAL) { |
| 93 | fprintf(stdout, "Timeout not supported, ignored\n"); |
| 94 | not_supported = 1; |
| 95 | return 0; |
| 96 | } else if (ret != -ETIME) { |
| 97 | fprintf(stderr, "Timeout: %s\n", strerror(-ret)); |
| 98 | goto err; |
| 99 | } |
| 100 | |
| 101 | exp = mtime_since_now(&tv); |
| 102 | if (exp >= TIMEOUT_MSEC / 2 && exp <= (TIMEOUT_MSEC * 3) / 2) |
| 103 | return 0; |
| 104 | fprintf(stderr, "%s: Timeout seems wonky (got %llu)\n", __FUNCTION__, exp); |
| 105 | err: |
| 106 | return 1; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * Test numbered trigger of timeout |
no test coverage detected