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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Description: run various timeout tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include "helpers.h"
#include "liburing.h"
#include "../src/syscall.h"
#define IO_NSEC_PER_SEC 1000000000ULL
static bool support_abs = false;
static bool support_clock = false;
static unsigned long long timespec_to_ns(struct timespec *ts)
{
return ts->tv_nsec + ts->tv_sec * IO_NSEC_PER_SEC;
}
static struct timespec ns_to_timespec(unsigned long long t)
{
struct timespec ts;
ts.tv_sec = t / IO_NSEC_PER_SEC;
ts.tv_nsec = t - ts.tv_sec * IO_NSEC_PER_SEC;
return ts;
}
static long long ns_since(struct timespec *ts)
{
struct timespec now;
int ret;
ret = clock_gettime(CLOCK_MONOTONIC, &now);
if (ret) {
fprintf(stderr, "clock_gettime failed\n");
exit(T_EXIT_FAIL);
}
return timespec_to_ns(&now) - timespec_to_ns(ts);
}
static int t_io_uring_wait(struct io_uring *ring, int nr, unsigned enter_flags,
struct timespec *ts)
{
struct __kernel_timespec kts = {
.tv_sec = ts->tv_sec,
.tv_nsec = ts->tv_nsec
};
struct io_uring_getevents_arg arg = {
.sigmask = 0,
.sigmask_sz = _NSIG / 8,
.ts = (unsigned long) &kts
};
int ret;
enter_flags |= IORING_ENTER_GETEVENTS | IORING_ENTER_EXT_ARG;
ret = io_uring_enter2(ring->ring_fd, 0, nr, enter_flags,
(void *)&arg, sizeof(arg));
return ret;
}
static int probe_timers(void)
{
struct io_uring_clock_register cr = { .clockid = CLOCK_MONOTONIC, };
struct io_uring ring;
struct timespec ts;
int ret;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "probe ring setup failed: %d\n", ret);
return ret;
}
ret = clock_gettime(CLOCK_MONOTONIC, &ts);
if (ret) {
fprintf(stderr, "clock_gettime failed\n");
return ret;
}
ret = t_io_uring_wait(&ring, 0, IORING_ENTER_ABS_TIMER, &ts);
if (!ret) {
support_abs = true;
} else if (ret != -EINVAL) {
fprintf(stderr, "wait failed %i\n", ret);
return ret;
}
ret = io_uring_register_clock(&ring, &cr);
if (!ret) {
support_clock = true;
} else if (ret != -EINVAL) {
fprintf(stderr, "io_uring_register_clock %i\n", ret);
return ret;
}
io_uring_queue_exit(&ring);
return 0;
}
static int test_timeout(bool abs, bool set_clock)
{
unsigned enter_flags = abs ? IORING_ENTER_ABS_TIMER : 0;
struct io_uring ring;
struct timespec start, end, ts;
long long dt;
int ret;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
if (set_clock) {
struct io_uring_clock_register cr = {};
cr.clockid = CLOCK_BOOTTIME;
ret = io_uring_register_clock(&ring, &cr);
if (ret) {
fprintf(stderr, "io_uring_register_clock failed\n");
return 1;
}
}
/* pass current time */
ret = clock_gettime(CLOCK_MONOTONIC, &start);
assert(ret == 0);
ts = abs ? start : ns_to_timespec(0);
ret = t_io_uring_wait(&ring, 1, enter_flags, &ts);
if (ret != -ETIME) {
fprintf(stderr, "wait current time failed, %i\n", ret);
return 1;
}
if (ns_since(&start) >= IO_NSEC_PER_SEC) {
fprintf(stderr, "current time test failed\n");
return 1;
}
if (abs) {
/* expired time */
ret = clock_gettime(CLOCK_MONOTONIC, &start);
assert(ret == 0);
ts = ns_to_timespec(timespec_to_ns(&start) - IO_NSEC_PER_SEC);
ret = t_io_uring_wait(&ring, 1, enter_flags, &ts);
if (ret != -ETIME) {
fprintf(stderr, "expired timeout wait failed, %i\n", ret);
return 1;
}
ret = clock_gettime(CLOCK_MONOTONIC, &end);
assert(ret == 0);
if (ns_since(&start) >= IO_NSEC_PER_SEC) {
fprintf(stderr, "expired timer test failed\n");
return 1;
}
}
/* 1s wait */
ret = clock_gettime(CLOCK_MONOTONIC, &start);
assert(ret == 0);
dt = 2 * IO_NSEC_PER_SEC + (abs ? timespec_to_ns(&start) : 0);
ts = ns_to_timespec(dt);
ret = t_io_uring_wait(&ring, 1, enter_flags, &ts);
if (ret != -ETIME) {
fprintf(stderr, "wait timeout failed, %i\n", ret);
return 1;
}
dt = ns_since(&start);
if (dt < IO_NSEC_PER_SEC || dt > 3 * IO_NSEC_PER_SEC) {
fprintf(stderr, "early wake up, %lld\n", dt);
return 1;
}
return 0;
}
static int test_clock_setup(void)
{
struct io_uring ring;
struct io_uring_clock_register cr = {};
int ret;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = __sys_io_uring_register(ring.ring_fd, IORING_REGISTER_CLOCK, NULL, 0);
if (!ret) {
fprintf(stderr, "invalid null clock registration %i\n", ret);
return T_EXIT_FAIL;
}
cr.clockid = -1;
ret = __sys_io_uring_register(ring.ring_fd, IORING_REGISTER_CLOCK, &cr, 0);
if (ret != -EINVAL) {
fprintf(stderr, "invalid clockid registration %i\n", ret);
return T_EXIT_FAIL;
}
cr.clockid = CLOCK_MONOTONIC;
ret = __sys_io_uring_register(ring.ring_fd, IORING_REGISTER_CLOCK, &cr, 0);
if (ret) {
fprintf(stderr, "clock monotonic registration failed %i\n", ret);
return T_EXIT_FAIL;
}
cr.clockid = CLOCK_BOOTTIME;
ret = __sys_io_uring_register(ring.ring_fd, IORING_REGISTER_CLOCK, &cr, 0);
if (ret) {
fprintf(stderr, "clock boottime registration failed %i\n", ret);
return T_EXIT_FAIL;
}
cr.clockid = CLOCK_MONOTONIC;
ret = __sys_io_uring_register(ring.ring_fd, IORING_REGISTER_CLOCK, &cr, 0);
if (ret) {
fprintf(stderr, "2nd clock monotonic registration failed %i\n", ret);
return T_EXIT_FAIL;
}
io_uring_queue_exit(&ring);
return 0;
}
int main(int argc, char *argv[])
{
int ret, i;
if (argc > 1)
return 0;
ret = probe_timers();
if (ret) {
fprintf(stderr, "probe failed\n");
return T_EXIT_FAIL;
}
if (!support_abs && !support_clock)
return T_EXIT_SKIP;
if (support_clock) {
ret = test_clock_setup();
if (ret) {
fprintf(stderr, "test_clock_setup failed\n");
return T_EXIT_FAIL;
}
}
for (i = 0; i < 4; i++) {
bool abs = i & 1;
bool clock = i & 2;
if (abs && !support_abs)
continue;
if (clock && !support_clock)
continue;
ret = test_timeout(abs, clock);
if (ret) {
fprintf(stderr, "test_timeout failed %i %i\n",
abs, clock);
return ret;
}
}
return 0;
}
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