* generic io engine that could be used for other projects.
*
*/
-#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
void unregister_ioengine(struct ioengine_ops *ops)
{
dprint(FD_IO, "ioengine %s unregistered\n", ops->name);
- flist_del(&ops->list);
- INIT_FLIST_HEAD(&ops->list);
+ flist_del_init(&ops->list);
}
void register_ioengine(struct ioengine_ops *ops)
{
dprint(FD_IO, "ioengine %s registered\n", ops->name);
- INIT_FLIST_HEAD(&ops->list);
flist_add_tail(&ops->list, &engine_list);
}
return ops;
}
-struct ioengine_ops *load_ioengine(struct thread_data *td)
+static struct ioengine_ops *__load_ioengine(const char *name)
{
- struct ioengine_ops *ops;
char engine[64];
- char *name;
-
- name = td->o.ioengine_so_path ?: td->o.ioengine;
-
- dprint(FD_IO, "load ioengine %s\n", name);
engine[sizeof(engine) - 1] = '\0';
strncpy(engine, name, sizeof(engine) - 1);
/*
* linux libaio has alias names, so convert to what we want
*/
- if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3))
+ if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) {
+ dprint(FD_IO, "converting ioengine name: %s -> libaio\n", name);
strcpy(engine, "libaio");
+ }
+
+ dprint(FD_IO, "load ioengine %s\n", engine);
+ return find_ioengine(engine);
+}
- ops = find_ioengine(engine);
+struct ioengine_ops *load_ioengine(struct thread_data *td)
+{
+ struct ioengine_ops *ops = NULL;
+ const char *name;
+
+ /*
+ * Use ->ioengine_so_path if an external ioengine path is specified.
+ * In this case, ->ioengine is "external" which also means the prefix
+ * for external ioengines "external:" is properly used.
+ */
+ name = td->o.ioengine_so_path ?: td->o.ioengine;
+
+ /*
+ * Try to load ->ioengine first, and if failed try to dlopen(3) either
+ * ->ioengine or ->ioengine_so_path. This is redundant for an external
+ * ioengine with prefix, and also leaves the possibility of unexpected
+ * behavior (e.g. if the "external" ioengine exists), but we do this
+ * so as not to break job files not using the prefix.
+ */
+ ops = __load_ioengine(td->o.ioengine);
if (!ops)
ops = dlopen_ioengine(td, name);
+ /*
+ * If ops is NULL, we failed to load ->ioengine, and also failed to
+ * dlopen(3) either ->ioengine or ->ioengine_so_path as a path.
+ */
if (!ops) {
log_err("fio: engine %s not loadable\n", name);
return NULL;
td->eo = NULL;
}
- if (td->io_ops_dlhandle)
+ if (td->io_ops_dlhandle) {
dlclose(td->io_ops_dlhandle);
+ td->io_ops_dlhandle = NULL;
+ }
td->io_ops = NULL;
}
if (td->io_ops->prep) {
int ret = td->io_ops->prep(td, io_u);
- dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret);
+ dprint(FD_IO, "prep: io_u %p: ret=%d\n", io_u, ret);
+
if (ret)
unlock_file(td, io_u->file);
return ret;
return r;
}
-int td_io_queue(struct thread_data *td, struct io_u *io_u)
+enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u)
{
const enum fio_ddir ddir = acct_ddir(io_u);
unsigned long buflen = io_u->xfer_buflen;
- int ret;
+ enum fio_q_status ret;
dprint_io_u(io_u, "queue");
fio_ro_check(td, io_u);
}
if (ddir_rw(ddir)) {
- td->io_issues[ddir]++;
- td->io_issue_bytes[ddir] += buflen;
+ if (!(io_u->flags & IO_U_F_VER_LIST)) {
+ td->io_issues[ddir]++;
+ td->io_issue_bytes[ddir] += buflen;
+ }
td->rate_io_issue_bytes[ddir] += buflen;
}
td->o.odirect) {
log_info("fio: first direct IO errored. File system may not "
- "support direct IO, or iomem_align= is bad. Try "
- "setting direct=0.\n");
+ "support direct IO, or iomem_align= is bad, or "
+ "invalid block size. Try setting direct=0.\n");
}
if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) {
}
if (ret == FIO_Q_COMPLETED) {
- if (ddir_rw(io_u->ddir)) {
+ if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) {
io_u_mark_depth(td, 1);
td->ts.total_io_u[io_u->ddir]++;
}
} else if (ret == FIO_Q_QUEUED) {
- int r;
-
td->io_u_queued++;
- if (ddir_rw(io_u->ddir))
+ if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir))
td->ts.total_io_u[io_u->ddir]++;
- if (td->io_u_queued >= td->o.iodepth_batch) {
- r = td_io_commit(td);
- if (r < 0)
- return r;
- }
+ if (td->io_u_queued >= td->o.iodepth_batch)
+ td_io_commit(td);
}
if (!td_ioengine_flagged(td, FIO_SYNCIO)) {
return ret;
}
-int td_io_commit(struct thread_data *td)
+void td_io_commit(struct thread_data *td)
{
int ret;
dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth);
if (!td->cur_depth || !td->io_u_queued)
- return 0;
+ return;
io_u_mark_depth(td, td->io_u_queued);
*/
td->io_u_in_flight += td->io_u_queued;
td->io_u_queued = 0;
-
- return 0;
}
int td_io_open_file(struct thread_data *td, struct fio_file *f)
{
assert(!fio_file_open(f));
assert(f->fd == -1);
+ assert(td->io_ops->open_file);
if (td->io_ops->open_file(td, f)) {
if (td->error == EINVAL && td->o.odirect)
}
if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
- td_verror(td, errno, "fadvise");
- goto err;
+ if (!fio_did_warn(FIO_WARN_FADVISE))
+ log_err("fio: fadvise hint failed\n");
}
}
#ifdef FIO_HAVE_WRITE_HINT
sep++;
}
- memset(&td, 0, sizeof(td));
-
+ memset(&td, 0, sizeof(struct thread_data));
td.o.ioengine = (char *)engine;
io_ops = load_ioengine(&td);
+
if (!io_ops) {
log_info("IO engine %s not found\n", engine);
return 1;
log_info("IO engine %s has no options\n", io_ops->name);
free_ioengine(&td);
-
return ret;
}
projects / fio.git / blobdiff