#include <signal.h>
#include <time.h>
#include <locale.h>
+#include <assert.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/ipc.h>
*/
r = td_io_getevents(td, 0, td->cur_depth, &ts);
if (r > 0) {
- icd.nr = r;
+ init_icd(&icd, NULL, r);
ios_completed(td, &icd);
}
if (td->cur_depth) {
r = td_io_getevents(td, td->cur_depth, td->cur_depth, NULL);
if (r > 0) {
- icd.nr = r;
+ init_icd(&icd, NULL, r);
ios_completed(td, &icd);
}
}
}
ret = td_io_queue(td, io_u);
- if (ret) {
+ if (ret < 0) {
td_verror(td, io_u->error);
put_io_u(td, io_u);
return 1;
- }
+ } else if (ret == FIO_Q_QUEUED) {
+ ret = td_io_getevents(td, 1, td->cur_depth, NULL);
+ if (ret < 0) {
+ td_verror(td, -ret);
+ return 1;
+ }
- ret = td_io_getevents(td, 1, td->cur_depth, NULL);
- if (ret < 0) {
- td_verror(td, ret);
- return 1;
- }
+ init_icd(&icd, NULL, ret);
+ ios_completed(td, &icd);
+ if (icd.error) {
+ td_verror(td, icd.error);
+ return 1;
+ }
+ } else if (ret == FIO_Q_COMPLETED) {
+ if (io_u->error) {
+ td_verror(td, io_u->error);
+ return 1;
+ }
- icd.nr = ret;
- ios_completed(td, &icd);
- if (icd.error) {
- td_verror(td, icd.error);
- return 1;
+ init_icd(&icd, NULL, 1);
+ io_completed(td, io_u, &icd);
+ put_io_u(td, io_u);
}
return 0;
*/
static void do_verify(struct thread_data *td)
{
- struct io_u *io_u, *v_io_u = NULL;
- struct io_completion_data icd;
struct fio_file *f;
- int ret, i;
+ struct io_u *io_u;
+ int ret, i, min_events;
/*
* sync io first and invalidate cache, to make sure we really
td_set_runstate(td, TD_VERIFYING);
- do {
- if (td->terminate)
- break;
+ io_u = NULL;
+ while (!td->terminate) {
+ struct io_completion_data icd;
+ struct timespec *timeout;
io_u = __get_io_u(td);
if (!io_u)
break;
- if (runtime_exceeded(td, &io_u->start_time)) {
- put_io_u(td, io_u);
+ if (runtime_exceeded(td, &io_u->start_time))
break;
- }
- if (get_next_verify(td, io_u)) {
- put_io_u(td, io_u);
+ if (get_next_verify(td, io_u))
break;
- }
- f = get_next_file(td);
- if (!f)
+ if (td_io_prep(td, io_u))
break;
- io_u->file = f;
+requeue:
+ ret = td_io_queue(td, io_u);
+
+ switch (ret) {
+ case FIO_Q_COMPLETED:
+ if (io_u->error)
+ ret = -io_u->error;
+ if (io_u->xfer_buflen != io_u->resid && io_u->resid) {
+ int bytes = io_u->xfer_buflen - io_u->resid;
- if (td_io_prep(td, io_u)) {
+ io_u->xfer_buflen = io_u->resid;
+ io_u->xfer_buf += bytes;
+ goto requeue;
+ }
+ init_icd(&icd, verify_io_u, 1);
+ io_completed(td, io_u, &icd);
+ if (icd.error) {
+ ret = icd.error;
+ break;
+ }
put_io_u(td, io_u);
+ continue;
+ case FIO_Q_QUEUED:
+ break;
+ default:
+ assert(ret < 0);
+ td_verror(td, -ret);
break;
}
- ret = td_io_queue(td, io_u);
- if (ret) {
- td_verror(td, io_u->error);
- put_io_u(td, io_u);
+ if (ret < 0)
break;
- }
/*
- * we have one pending to verify, do that while
- * we are doing io on the next one
+ * if we can queue more, do so. but check if there are
+ * completed io_u's first.
*/
- if (do_io_u_verify(td, &v_io_u))
- break;
+ if (queue_full(td)) {
+ timeout = NULL;
+ min_events = 1;
+ } else {
+ struct timespec ts;
- ret = td_io_getevents(td, 1, 1, NULL);
- if (ret != 1) {
- if (ret < 0)
- td_verror(td, ret);
- break;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 0;
+ timeout = &ts;
+ min_events = 0;
}
- v_io_u = td->io_ops->event(td, 0);
- icd.nr = 1;
- icd.error = 0;
- fio_gettime(&icd.time, NULL);
- io_completed(td, v_io_u, &icd);
+ /*
+ * Reap required number of io units, if any, and do the
+ * verification on them through the callback handler
+ */
+ ret = td_io_getevents(td, min_events, td->cur_depth, timeout);
+ if (ret < 0) {
+ td_verror(td, -ret);
+ break;
+ } else if (!ret)
+ continue;
+
+ init_icd(&icd, verify_io_u, ret);
+ ios_completed(td, &icd);
if (icd.error) {
td_verror(td, icd.error);
- put_io_u(td, v_io_u);
- v_io_u = NULL;
break;
}
+ }
- /*
- * if we can't submit more io, we need to verify now
- */
- if (queue_full(td) && do_io_u_verify(td, &v_io_u))
- break;
-
- } while (1);
-
- do_io_u_verify(td, &v_io_u);
+ if (io_u)
+ put_io_u(td, io_u);
if (td->cur_depth)
cleanup_pending_aio(td);
memcpy(&s, &io_u->start_time, sizeof(s));
requeue:
ret = td_io_queue(td, io_u);
- if (ret) {
- if (ret > 0 && (io_u->xfer_buflen != io_u->resid) &&
- io_u->resid) {
- /*
- * short read/write. requeue.
- */
+
+ switch (ret) {
+ case FIO_Q_COMPLETED:
+ if (io_u->error) {
+ ret = io_u->error;
+ break;
+ }
+ if (io_u->xfer_buflen != io_u->resid && io_u->resid) {
+ int bytes = io_u->xfer_buflen - io_u->resid;
+
io_u->xfer_buflen = io_u->resid;
- io_u->xfer_buf += ret;
+ io_u->xfer_buf += bytes;
goto requeue;
- } else {
- put_io_u(td, io_u);
- break;
}
+ init_icd(&icd, NULL, 1);
+ io_completed(td, io_u, &icd);
+ put_io_u(td, io_u);
+ break;
+ case FIO_Q_QUEUED:
+ break;
+ default:
+ assert(ret < 0);
+ put_io_u(td, io_u);
+ break;
}
+ if (ret < 0)
+ break;
+
add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time));
- if (td->cur_depth < td->iodepth) {
- struct timespec ts = { .tv_sec = 0, .tv_nsec = 0};
+ if (ret == FIO_Q_QUEUED) {
+ if (td->cur_depth < td->iodepth) {
+ struct timespec ts;
- timeout = &ts;
- min_evts = 0;
- } else {
- timeout = NULL;
- min_evts = 1;
- }
+ ts.tv_sec = 0;
+ ts.tv_nsec = 0;
+ timeout = &ts;
+ min_evts = 0;
+ } else {
+ timeout = NULL;
+ min_evts = 1;
+ }
- ret = td_io_getevents(td, min_evts, td->cur_depth, timeout);
- if (ret < 0) {
- td_verror(td, ret);
- break;
- } else if (!ret)
- continue;
+ ret = td_io_getevents(td, min_evts, td->cur_depth, timeout);
+ if (ret < 0) {
+ td_verror(td, -ret);
+ break;
+ } else if (!ret)
+ continue;
- icd.nr = ret;
- ios_completed(td, &icd);
- if (icd.error) {
- td_verror(td, icd.error);
- break;
+ init_icd(&icd, NULL, ret);
+ ios_completed(td, &icd);
+ if (icd.error) {
+ td_verror(td, icd.error);
+ break;
+ }
}
/*
unsigned long long b;
b = td->io_blocks[0] + td->io_blocks[1];
- if (!(b % td->thinktime_blocks))
- usec_sleep(td, td->thinktime);
+ if (!(b % td->thinktime_blocks)) {
+ int left;
+
+ if (td->thinktime_spin)
+ __usec_sleep(td->thinktime_spin);
+
+ left = td->thinktime - td->thinktime_spin;
+ if (left)
+ usec_sleep(td, left);
+ }
}
}
close_ioengine(td);
cleanup_io_u(td);
td_set_runstate(td, TD_EXITED);
- return NULL;
+ return (void *) td->error;
}
/*
* We cannot pass the td data into a forked process, so attach the td and
* pass it to the thread worker.
*/
-static void *fork_main(int shmid, int offset)
+static int fork_main(int shmid, int offset)
{
struct thread_data *td;
- void *data;
+ void *data, *ret;
data = shmat(shmid, NULL, 0);
if (data == (void *) -1) {
+ int __err = errno;
+
perror("shmat");
- return NULL;
+ return __err;
}
td = data + offset * sizeof(struct thread_data);
- thread_main(td);
+ ret = thread_main(td);
shmdt(data);
- return NULL;
+ return (int) ret;
}
/*
static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
{
struct thread_data *td;
- int i, cputhreads, pending;
+ int i, cputhreads, pending, status, ret;
/*
* reap exited threads (TD_EXITED -> TD_REAPED)
if (td->io_ops && td->io_ops->flags & FIO_CPUIO)
cputhreads++;
+ if (td->runstate < TD_EXITED) {
+ /*
+ * check if someone quit or got killed in an unusual way
+ */
+ ret = waitpid(td->pid, &status, WNOHANG);
+ if (ret < 0)
+ perror("waitpid");
+ else if ((ret == td->pid) && WIFSIGNALED(status)) {
+ int sig = WTERMSIG(status);
+
+ log_err("fio: pid=%d, got signal=%d\n", td->pid, sig);
+ td_set_runstate(td, TD_REAPED);
+ goto reaped;
+ }
+ }
+
if (td->runstate != TD_EXITED) {
if (td->runstate < TD_RUNNING)
pending++;
if (pthread_join(td->thread, (void *) &ret))
perror("thread_join");
- } else
- waitpid(td->pid, NULL, 0);
+ } else {
+ int status;
+ ret = waitpid(td->pid, &status, 0);
+ if (ret < 0)
+ perror("waitpid");
+ else if (WIFEXITED(status) && WEXITSTATUS(status)) {
+ if (!exit_value)
+ exit_value++;
+ }
+ }
+
+reaped:
(*nr_running)--;
(*m_rate) -= td->ratemin;
(*t_rate) -= td->rate;
if (fork())
fio_sem_down(&startup_sem);
else {
- fork_main(shm_id, i);
- exit(0);
+ int ret = fork_main(shm_id, i);
+
+ exit(ret);
}
}
}
projects / fio.git / blobdiff