#include <unistd.h>
#include <string.h>
#include <dlfcn.h>
+
#include "fio.h"
#include "os.h"
+static int check_engine_ops(struct ioengine_ops *ops)
+{
+ /*
+ * cpu thread doesn't need to provide anything
+ */
+ if (ops->flags & FIO_CPUIO)
+ return 0;
+
+ if (!ops->event) {
+ log_err("%s: no event handler)\n", ops->name);
+ return 1;
+ }
+ if (!ops->getevents) {
+ log_err("%s: no getevents handler)\n", ops->name);
+ return 1;
+ }
+ if (!ops->queue) {
+ log_err("%s: no queue handler)\n", ops->name);
+ return 1;
+ }
+
+ return 0;
+}
+
struct ioengine_ops *load_ioengine(struct thread_data *td, char *name)
{
char engine[16], engine_lib[256];
- struct ioengine_ops *ops;
+ struct ioengine_ops *ops, *ret;
void *dlhandle;
strcpy(engine, name);
return NULL;
}
- ops->dlhandle = dlhandle;
- return ops;
+ /*
+ * Check that the required methods are there.
+ */
+ if (check_engine_ops(ops)) {
+ dlclose(dlhandle);
+ return NULL;
+ }
+
+ ret = malloc(sizeof(*ret));
+ memcpy(ret, ops, sizeof(*ret));
+ ret->data = NULL;
+ ret->dlhandle = dlhandle;
+
+ return ret;
}
void close_ioengine(struct thread_data *td)
td->io_ops->cleanup(td);
dlclose(td->io_ops->dlhandle);
+ free(td->io_ops);
+ td->io_ops = NULL;
+}
+
+int td_io_prep(struct thread_data *td, struct io_u *io_u)
+{
+ if (td->io_ops->prep && td->io_ops->prep(td, io_u))
+ return 1;
+
+ return 0;
+}
+
+int td_io_getevents(struct thread_data *td, int min, int max,
+ struct timespec *t)
+{
+ return td->io_ops->getevents(td, min, max, t);
+}
+
+int td_io_queue(struct thread_data *td, struct io_u *io_u)
+{
+ gettimeofday(&io_u->issue_time, NULL);
+
+ return td->io_ops->queue(td, io_u);
+}
+
+int td_io_init(struct thread_data *td)
+{
+ if (td->io_ops->init)
+ return td->io_ops->init(td);
+
+ return 0;
}