*
* It also can act as external C++ engine - compiled with:
*
- * g++ -O2 -g -shared -rdynamic -fPIC -o cpp_null null.c -DFIO_EXTERNAL_ENGINE
+ * g++ -O2 -g -shared -rdynamic -fPIC -o cpp_null null.c \
+ * -include ../config-host.h -DFIO_EXTERNAL_ENGINE
*
* to test it execute:
*
* LD_LIBRARY_PATH=./engines ./fio examples/cpp_null.fio
*
*/
-#include <stdio.h>
#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
#include <assert.h>
#include "../fio.h"
return ret;
}
+static void null_queued(struct thread_data *td, struct null_data *nd)
+{
+ struct timespec now;
+
+ if (!fio_fill_issue_time(td))
+ return;
+
+ fio_gettime(&now, NULL);
+
+ for (int i = 0; i < nd->queued; i++) {
+ struct io_u *io_u = nd->io_us[i];
+
+ memcpy(&io_u->issue_time, &now, sizeof(now));
+ io_u_queued(td, io_u);
+ }
+}
+
static int null_commit(struct thread_data *td, struct null_data *nd)
{
if (!nd->events) {
+ null_queued(td, nd);
+
#ifndef FIO_EXTERNAL_ENGINE
io_u_mark_submit(td, nd->queued);
#endif
return 0;
}
-static int null_queue(struct thread_data *td, struct null_data *nd,
- struct io_u *io_u)
+static enum fio_q_status null_queue(struct thread_data *td,
+ struct null_data *nd, struct io_u *io_u)
{
fio_ro_check(td, io_u);
}
}
-static int null_init(struct thread_data *td, struct null_data **nd_ptr)
+static struct null_data *null_init(struct thread_data *td)
{
- struct null_data *nd = (struct null_data *) malloc(sizeof(**nd_ptr));
+ struct null_data *nd;
+ nd = malloc(sizeof(*nd));
memset(nd, 0, sizeof(*nd));
if (td->o.iodepth != 1) {
- nd->io_us = (struct io_u **) malloc(td->o.iodepth * sizeof(struct io_u *));
- memset(nd->io_us, 0, td->o.iodepth * sizeof(struct io_u *));
+ nd->io_us = calloc(td->o.iodepth, sizeof(struct io_u *));
+ td->io_ops->flags |= FIO_ASYNCIO_SETS_ISSUE_TIME;
} else
td->io_ops->flags |= FIO_SYNCIO;
- *nd_ptr = nd;
- return 0;
+ td_set_ioengine_flags(td);
+ return nd;
}
#ifndef __cplusplus
static struct io_u *fio_null_event(struct thread_data *td, int event)
{
- return null_event((struct null_data *)td->io_ops_data, event);
+ return null_event(td->io_ops_data, event);
}
static int fio_null_getevents(struct thread_data *td, unsigned int min_events,
unsigned int max, const struct timespec *t)
{
- struct null_data *nd = (struct null_data *)td->io_ops_data;
+ struct null_data *nd = td->io_ops_data;
return null_getevents(nd, min_events, max, t);
}
static int fio_null_commit(struct thread_data *td)
{
- return null_commit(td, (struct null_data *)td->io_ops_data);
+ return null_commit(td, td->io_ops_data);
}
-static int fio_null_queue(struct thread_data *td, struct io_u *io_u)
+static enum fio_q_status fio_null_queue(struct thread_data *td,
+ struct io_u *io_u)
{
- return null_queue(td, (struct null_data *)td->io_ops_data, io_u);
+ return null_queue(td, td->io_ops_data, io_u);
}
static int fio_null_open(struct thread_data *td, struct fio_file *f)
{
- return null_open((struct null_data *)td->io_ops_data, f);
+ return null_open(td->io_ops_data, f);
}
static void fio_null_cleanup(struct thread_data *td)
{
- null_cleanup((struct null_data *)td->io_ops_data);
+ null_cleanup(td->io_ops_data);
}
static int fio_null_init(struct thread_data *td)
{
- return null_init(td, (struct null_data **)&td->io_ops_data);
+ td->io_ops_data = null_init(td);
+ assert(td->io_ops_data);
+ return 0;
}
static struct ioengine_ops ioengine = {
struct NullData {
NullData(struct thread_data *td)
{
- null_init(td, &impl_);
+ impl_ = null_init(td);
+ assert(impl_);
}
~NullData()
return null_commit(td, impl_);
}
- int fio_null_queue(struct thread_data *td, struct io_u *io_u)
+ fio_q_status fio_null_queue(struct thread_data *td, struct io_u *io_u)
{
return null_queue(td, impl_, io_u);
}
return null_open(impl_, f);
}
+private:
struct null_data *impl_;
};
return NullData::get(td)->fio_null_commit(td);
}
-static int fio_null_queue(struct thread_data *td, struct io_u *io_u)
+static fio_q_status fio_null_queue(struct thread_data *td, struct io_u *io_u)
{
return NullData::get(td)->fio_null_queue(td, io_u);
}