#include "../fio.h"
#include "../os.h"
-struct mmapio_data {
- struct io_u *last_io_u;
-};
-
-static int fio_mmapio_getevents(struct thread_data *td, int fio_unused min,
- int max, struct timespec fio_unused *t)
-{
- assert(max <= 1);
-
- /*
- * we can only have one finished io_u for sync io, since the depth
- * is always 1
- */
- if (list_empty(&td->io_u_busylist))
- return 0;
-
- return 1;
-}
-
-static struct io_u *fio_mmapio_event(struct thread_data *td, int event)
-{
- struct mmapio_data *sd = td->io_ops->data;
-
- assert(event == 0);
-
- return sd->last_io_u;
-}
-
-
static int fio_mmapio_queue(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
unsigned long long real_off = io_u->offset - f->file_offset;
- struct mmapio_data *sd = td->io_ops->data;
if (io_u->ddir == DDIR_READ)
- memcpy(io_u->buf, f->mmap + real_off, io_u->buflen);
+ memcpy(io_u->xfer_buf, f->mmap + real_off, io_u->xfer_buflen);
else if (io_u->ddir == DDIR_WRITE)
- memcpy(f->mmap + real_off, io_u->buf, io_u->buflen);
+ memcpy(f->mmap + real_off, io_u->xfer_buf, io_u->xfer_buflen);
else if (io_u->ddir == DDIR_SYNC) {
if (msync(f->mmap, f->file_size, MS_SYNC))
io_u->error = errno;
* not really direct, but should drop the pages from the cache
*/
if (td->odirect && io_u->ddir != DDIR_SYNC) {
- if (msync(f->mmap + real_off, io_u->buflen, MS_SYNC) < 0)
+ if (msync(f->mmap + real_off, io_u->xfer_buflen, MS_SYNC) < 0)
io_u->error = errno;
- if (madvise(f->mmap + real_off, io_u->buflen, MADV_DONTNEED) < 0)
+ if (madvise(f->mmap + real_off, io_u->xfer_buflen, MADV_DONTNEED) < 0)
io_u->error = errno;
}
- if (!io_u->error)
- sd->last_io_u = io_u;
+ if (io_u->error)
+ td_verror(td, io_u->error);
- return io_u->error;
-}
-
-static void fio_mmapio_cleanup(struct thread_data *td)
-{
- if (td->io_ops->data) {
- free(td->io_ops->data);
- td->io_ops->data = NULL;
- }
+ return FIO_Q_COMPLETED;
}
static int fio_mmapio_init(struct thread_data *td)
{
- struct mmapio_data *sd = malloc(sizeof(*sd));
+ struct fio_file *f;
+ int i;
+
+ if (td->ddir == DDIR_READ && !td_rw(td))
+ return 0;
+
+ /*
+ * We need to truncate the files to the right size, if
+ * we are writing to it.
+ */
+ for_each_file(td, f, i) {
+ if (ftruncate(f->fd, f->file_size) < 0) {
+ td_verror(td, errno);
+ return 1;
+ }
+ }
- sd->last_io_u = NULL;
- td->io_ops->data = sd;
return 0;
}
static struct ioengine_ops ioengine = {
.name = "mmap",
.version = FIO_IOOPS_VERSION,
- .init = fio_mmapio_init,
.queue = fio_mmapio_queue,
- .getevents = fio_mmapio_getevents,
- .event = fio_mmapio_event,
- .cleanup = fio_mmapio_cleanup,
+ .init = fio_mmapio_init,
.flags = FIO_SYNCIO | FIO_MMAPIO,
};