X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Flibaio.c;h=bd8ebb8b65553fe1c8067815811b8a9393b788dc;hp=a659ba9bc141890b57ff0b29180eb446bf6dc17f;hb=f6db4fa5a64501a3df72c2c4394d4c8d9fd9d991;hpb=7e77dd026d85253936aef432ba8f3e89b96b805c

diff --git a/engines/libaio.c b/engines/libaio.c
index a659ba9b..bd8ebb8b 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -1,5 +1,7 @@
 /*
- * native linux aio io engine
+ * libaio engine
+ *
+ * IO engine using the Linux native aio interface.
  *
  */
 #include <stdio.h>
@@ -9,7 +11,6 @@
 #include <assert.h>
 
 #include "../fio.h"
-#include "../os.h"
 
 #ifdef FIO_HAVE_LIBAIO
 
@@ -31,7 +32,7 @@ static int fio_libaio_prep(struct thread_data fio_unused *td, struct io_u *io_u)
 		io_prep_pread(&io_u->iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
 	else if (io_u->ddir == DDIR_WRITE)
 		io_prep_pwrite(&io_u->iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset);
-	else if (io_u->ddir == DDIR_SYNC)
+	else if (ddir_sync(io_u->ddir))
 		io_prep_fsync(&io_u->iocb, f->fd);
 	else
 		return 1;
@@ -42,19 +43,32 @@ static int fio_libaio_prep(struct thread_data fio_unused *td, struct io_u *io_u)
 static struct io_u *fio_libaio_event(struct thread_data *td, int event)
 {
 	struct libaio_data *ld = td->io_ops->data;
+	struct io_event *ev;
+	struct io_u *io_u;
+
+	ev = ld->aio_events + event;
+	io_u = ev_to_iou(ev);
+
+	if (ev->res != io_u->xfer_buflen) {
+		if (ev->res > io_u->xfer_buflen)
+			io_u->error = -ev->res;
+		else
+			io_u->resid = io_u->xfer_buflen - ev->res;
+	} else
+		io_u->error = 0;
 
-	return ev_to_iou(ld->aio_events + event);
+	return io_u;
 }
 
-static int fio_libaio_getevents(struct thread_data *td, int min, int max,
-				struct timespec *t)
+static int fio_libaio_getevents(struct thread_data *td, unsigned int min,
+				unsigned int max, struct timespec *t)
 {
 	struct libaio_data *ld = td->io_ops->data;
-	long r;
+	int r;
 
 	do {
 		r = io_getevents(ld->aio_ctx, min, max, ld->aio_events, t);
-		if (r >= min)
+		if (r >= (int) min)
 			break;
 		else if (r == -EAGAIN) {
 			usleep(100);
@@ -72,7 +86,9 @@ static int fio_libaio_queue(struct thread_data *td, struct io_u *io_u)
 {
 	struct libaio_data *ld = td->io_ops->data;
 
-	if (ld->iocbs_nr == (int) td->iodepth)
+	fio_ro_check(td, io_u);
+
+	if (ld->iocbs_nr == (int) td->o.iodepth)
 		return FIO_Q_BUSY;
 
 	/*
@@ -87,6 +103,13 @@ static int fio_libaio_queue(struct thread_data *td, struct io_u *io_u)
 		if (fsync(io_u->file->fd) < 0)
 			io_u->error = errno;
 
+		return FIO_Q_COMPLETED;
+	} else if (io_u->ddir == DDIR_DATASYNC) {
+		if (ld->iocbs_nr)
+			return FIO_Q_BUSY;
+		if (fdatasync(io_u->file->fd) < 0)
+			io_u->error = errno;
+
 		return FIO_Q_COMPLETED;
 	}
 
@@ -102,6 +125,9 @@ static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us,
 	struct timeval now;
 	unsigned int i;
 
+	if (!fio_fill_issue_time(td))
+		return;
+
 	fio_gettime(&now, NULL);
 
 	for (i = 0; i < nr; i++) {
@@ -117,36 +143,29 @@ static int fio_libaio_commit(struct thread_data *td)
 	struct libaio_data *ld = td->io_ops->data;
 	struct iocb **iocbs;
 	struct io_u **io_us;
-	int ret, iocbs_nr;
+	int ret;
 
 	if (!ld->iocbs_nr)
 		return 0;
 
-	iocbs_nr = ld->iocbs_nr;
 	io_us = ld->io_us;
 	iocbs = ld->iocbs;
 	do {
-		ret = io_submit(ld->aio_ctx, iocbs_nr, iocbs);
-		if (ret == iocbs_nr) {
-			fio_libaio_queued(td, io_us, ret);
-			ret = 0;
-			break;
-		} else if (ret > 0) {
+		ret = io_submit(ld->aio_ctx, ld->iocbs_nr, iocbs);
+		if (ret > 0) {
 			fio_libaio_queued(td, io_us, ret);
+			io_u_mark_submit(td, ret);
+			ld->iocbs_nr -= ret;
 			io_us += ret;
 			iocbs += ret;
-			iocbs_nr -= ret;
-			continue;
-		} else if (ret == -EAGAIN || !ret)
-			usleep(100);
-		else if (ret == -EINTR)
+			ret = 0;
+		} else if (!ret || ret == -EAGAIN || ret == -EINTR) {
+			if (!ret)
+				io_u_mark_submit(td, ret);
 			continue;
-		else
+		} else
 			break;
-	} while (1);
-
-	if (!ret)
-		ld->iocbs_nr = 0;
+	} while (ld->iocbs_nr);
 
 	return ret;
 }
@@ -168,27 +187,30 @@ static void fio_libaio_cleanup(struct thread_data *td)
 		free(ld->iocbs);
 		free(ld->io_us);
 		free(ld);
-		td->io_ops->data = NULL;
 	}
 }
 
 static int fio_libaio_init(struct thread_data *td)
 {
 	struct libaio_data *ld = malloc(sizeof(*ld));
+	int err;
 
 	memset(ld, 0, sizeof(*ld));
-	if (io_queue_init(td->iodepth, &ld->aio_ctx)) {
-		td_verror(td, errno);
+
+	err = io_queue_init(td->o.iodepth, &ld->aio_ctx);
+	if (err) {
+		td_verror(td, -err, "io_queue_init");
+		log_err("fio: check /proc/sys/fs/aio-max-nr\n");
 		free(ld);
 		return 1;
 	}
 
-	ld->aio_events = malloc(td->iodepth * sizeof(struct io_event));
-	memset(ld->aio_events, 0, td->iodepth * sizeof(struct io_event));
-	ld->iocbs = malloc(td->iodepth * sizeof(struct iocb *));
+	ld->aio_events = malloc(td->o.iodepth * sizeof(struct io_event));
+	memset(ld->aio_events, 0, td->o.iodepth * sizeof(struct io_event));
+	ld->iocbs = malloc(td->o.iodepth * sizeof(struct iocb *));
 	memset(ld->iocbs, 0, sizeof(struct iocb *));
-	ld->io_us = malloc(td->iodepth * sizeof(struct io_u *));
-	memset(ld->io_us, 0, td->iodepth * sizeof(struct io_u *));
+	ld->io_us = malloc(td->o.iodepth * sizeof(struct io_u *));
+	memset(ld->io_us, 0, td->o.iodepth * sizeof(struct io_u *));
 	ld->iocbs_nr = 0;
 
 	td->io_ops->data = ld;
@@ -206,6 +228,9 @@ static struct ioengine_ops ioengine = {
 	.getevents	= fio_libaio_getevents,
 	.event		= fio_libaio_event,
 	.cleanup	= fio_libaio_cleanup,
+	.open_file	= generic_open_file,
+	.close_file	= generic_close_file,
+	.get_file_size	= generic_get_file_size,
 };
 
 #else /* FIO_HAVE_LIBAIO */