#include <unistd.h>
#include <string.h>
#include <dlfcn.h>
+#include <assert.h>
#include "fio.h"
#include "os.h"
return 1;
}
- /*
- * cpu thread doesn't need to provide anything
- */
- if (ops->flags & FIO_CPUIO)
- return 0;
-
if (!ops->queue) {
log_err("%s: no queue handler\n", ops->name);
return 1;
INIT_LIST_HEAD(&ops->list);
}
-int register_ioengine(struct ioengine_ops *ops)
+void register_ioengine(struct ioengine_ops *ops)
{
INIT_LIST_HEAD(&ops->list);
list_add_tail(&ops->list, &engine_list);
- return 0;
}
static struct ioengine_ops *find_ioengine(const char *name)
{
struct ioengine_ops *ops;
struct list_head *entry;
- char engine[16];
-
- strncpy(engine, name, sizeof(engine) - 1);
-
- if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3))
- strcpy(engine, "libaio");
list_for_each(entry, &engine_list) {
ops = list_entry(entry, struct ioengine_ops, list);
- if (!strcmp(engine, ops->name))
+ if (!strcmp(name, ops->name))
return ops;
}
dlerror();
dlhandle = dlopen(engine_lib, RTLD_LAZY);
if (!dlhandle) {
- td_vmsg(td, -1, dlerror());
+ td_vmsg(td, -1, dlerror(), "dlopen");
return NULL;
}
*/
ops = dlsym(dlhandle, "ioengine");
if (!ops) {
- td_vmsg(td, -1, dlerror());
+ td_vmsg(td, -1, dlerror(), "dlsym");
dlclose(dlhandle);
return NULL;
}
int td_io_getevents(struct thread_data *td, int min, int max,
struct timespec *t)
{
+ if (min > 0 && td->io_ops->commit) {
+ int r = td->io_ops->commit(td);
+
+ if (r < 0)
+ return r;
+ }
if (td->io_ops->getevents)
return td->io_ops->getevents(td, min, max, t);
{
int ret;
+ assert((io_u->flags & IO_U_F_FLIGHT) == 0);
+ io_u->flags |= IO_U_F_FLIGHT;
+
+ assert(io_u->file->flags & FIO_FILE_OPEN);
+
+ io_u->error = 0;
+ io_u->resid = 0;
+
+ if (td->io_ops->flags & FIO_SYNCIO) {
+ fio_gettime(&io_u->issue_time, NULL);
+
+ /*
+ * for a sync engine, set the timeout upfront
+ */
+ if (mtime_since(&td->timeout_end, &io_u->issue_time) < IO_U_TIMEOUT)
+ io_u_set_timeout(td);
+ }
if (io_u->ddir != DDIR_SYNC)
td->io_issues[io_u->ddir]++;
+ io_u_mark_depth(td, io_u);
+
ret = td->io_ops->queue(td, io_u);
- fio_gettime(&io_u->issue_time, NULL);
+
+ if (ret == FIO_Q_QUEUED || ret == FIO_Q_COMPLETED)
+ get_file(io_u->file);
+
+ if (ret == FIO_Q_QUEUED) {
+ int r;
+
+ td->io_u_queued++;
+ if (td->io_u_queued > td->o.iodepth_batch) {
+ r = td_io_commit(td);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if ((td->io_ops->flags & FIO_SYNCIO) == 0) {
+ fio_gettime(&io_u->issue_time, NULL);
+
+ /*
+ * async engine, set the timeout here
+ */
+ if (ret == FIO_Q_QUEUED &&
+ mtime_since(&td->timeout_end, &io_u->issue_time) < IO_U_TIMEOUT)
+ io_u_set_timeout(td);
+ }
+
return ret;
}
int td_io_init(struct thread_data *td)
{
- if (td->io_ops->init)
- return td->io_ops->init(td);
+ int ret = 0;
- return 0;
+ if (td->io_ops->init) {
+ ret = td->io_ops->init(td);
+ if (ret && td->o.iodepth > 1)
+ log_err("fio: io engine init failed. Perhaps try reducing io dpeth?\n");
+ }
+
+ return ret;
}
int td_io_commit(struct thread_data *td)
{
+ if (!td->cur_depth)
+ return 0;
+
+ td->io_u_queued = 0;
if (td->io_ops->commit)
return td->io_ops->commit(td);
return 0;
}
+
+int td_io_open_file(struct thread_data *td, struct fio_file *f)
+{
+ if (td->io_ops->open_file(td, f)) {
+ if (td->error == EINVAL && td->o.odirect)
+ log_err("fio: destination does not support O_DIRECT\n");
+ if (td->error == EMFILE)
+ log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->o.nr_files);
+
+ return 1;
+ }
+
+ f->last_free_lookup = 0;
+ f->last_completed_pos = 0;
+ f->last_pos = 0;
+ f->flags |= FIO_FILE_OPEN;
+ f->flags &= ~FIO_FILE_CLOSING;
+
+ if (td->io_ops->flags & FIO_DISKLESSIO)
+ goto done;
+
+ if (td->o.invalidate_cache && file_invalidate_cache(td, f))
+ goto err;
+
+ if (td->o.fadvise_hint) {
+ int flags;
+
+ if (td_random(td))
+ flags = POSIX_FADV_RANDOM;
+ else
+ flags = POSIX_FADV_SEQUENTIAL;
+
+ if (fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) {
+ td_verror(td, errno, "fadvise");
+ goto err;
+ }
+ }
+
+ if (f->file_map)
+ memset(f->file_map, 0, f->num_maps * sizeof(long));
+
+done:
+ td->nr_open_files++;
+ get_file(f);
+ return 0;
+err:
+ td->io_ops->close_file(td, f);
+ return 1;
+}
+
+void td_io_close_file(struct thread_data *td, struct fio_file *f)
+{
+ /*
+ * mark as closing, do real close when last io on it has completed
+ */
+ f->flags |= FIO_FILE_CLOSING;
+
+ put_file(td, f);
+}
+
projects / fio.git / blobdiff