--- /dev/null
+/*
+ * guasi engine
+ *
+ * IO engine using the GUASI library.
+ *
+ * This is currently disabled, add -lguasi to the fio Makefile target
+ * and add a #define FIO_HAVE_GUASI to os-linux.h to enable it. You'll
+ * need the GUASI lib as well:
+ *
+ * http://www.xmailserver.org/guasi-lib.html
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "../fio.h"
+#include "../os.h"
+
+#ifdef FIO_HAVE_GUASI
+
+#define GFIO_MIN_THREADS 32
+
+#include <guasi.h>
+#include <guasi_syscalls.h>
+
+#ifdef GFIO_DEBUG
+#define GDBG_PRINT(a) printf a
+#else
+#define GDBG_PRINT(a) (void) 0
+#endif
+
+#define STFU_GCC(a) a = a
+
+
+struct guasi_data {
+ guasi_t hctx;
+ int max_reqs;
+ guasi_req_t *reqs;
+ struct io_u **io_us;
+ int reqs_nr;
+};
+
+static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u)
+{
+ STFU_GCC(io_u);
+
+ GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
+
+ return 0;
+}
+
+static struct io_u *fio_guasi_event(struct thread_data *td, int event)
+{
+ struct guasi_data *ld = td->io_ops->data;
+ struct io_u *io_u;
+ struct guasi_reqinfo rinf;
+
+ GDBG_PRINT(("fio_guasi_event(%d)\n", event));
+ if (guasi_req_info(ld->reqs[event], &rinf) < 0) {
+ fprintf(stderr, "guasi_req_info(%d) FAILED!\n", event);
+ return NULL;
+ }
+ io_u = rinf.asid;
+ GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
+
+ if (io_u->ddir == DDIR_READ ||
+ io_u->ddir == DDIR_WRITE) {
+ if (rinf.result != (long) io_u->xfer_buflen) {
+ if (rinf.result < 0)
+ io_u->error = rinf.error;
+ else
+ io_u->resid = io_u->xfer_buflen - rinf.result;
+ } else
+ io_u->error = 0;
+ } else
+ io_u->error = rinf.result;
+
+ return io_u;
+}
+
+static int fio_guasi_getevents(struct thread_data *td, int min, int max,
+ struct timespec *t)
+{
+ struct guasi_data *ld = td->io_ops->data;
+ int n = 0, r;
+ long timeo = -1;
+
+ GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
+ if (min > ld->max_reqs)
+ min = ld->max_reqs;
+ if (max > ld->max_reqs)
+ max = ld->max_reqs;
+ if (t)
+ timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
+ do {
+ r = guasi_fetch(ld->hctx, ld->reqs + n, max - n, timeo);
+ if (r < 0)
+ break;
+ n += r;
+ if (n >= min)
+ break;
+ } while (1);
+ GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
+
+ return n;
+}
+
+static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u)
+{
+ struct guasi_data *ld = td->io_ops->data;
+
+ GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
+ if (ld->reqs_nr == (int) td->iodepth)
+ return FIO_Q_BUSY;
+
+ ld->io_us[ld->reqs_nr] = io_u;
+ ld->reqs_nr++;
+ return FIO_Q_QUEUED;
+}
+
+static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us,
+ unsigned int nr)
+{
+ struct timeval now;
+ struct io_u *io_u = io_us[nr];
+
+ fio_gettime(&now, NULL);
+ memcpy(&io_u->issue_time, &now, sizeof(now));
+ io_u_queued(td, io_u);
+}
+
+static int fio_guasi_commit(struct thread_data *td)
+{
+ struct guasi_data *ld = td->io_ops->data;
+ int i;
+ struct io_u *io_u;
+ struct fio_file *f;
+
+ GDBG_PRINT(("fio_guasi_commit()\n"));
+ for (i = 0; i < ld->reqs_nr; i++) {
+ io_u = ld->io_us[i];
+ f = io_u->file;
+ io_u->greq = NULL;
+ if (io_u->ddir == DDIR_READ)
+ io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
+ f->fd, io_u->xfer_buf, io_u->xfer_buflen,
+ io_u->offset);
+ else if (io_u->ddir == DDIR_WRITE)
+ io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
+ f->fd, io_u->xfer_buf, io_u->xfer_buflen,
+ io_u->offset);
+ else if (io_u->ddir == DDIR_SYNC)
+ io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
+ else {
+ fprintf(stderr, "fio_guasi_commit() FAILED: %d\n", io_u->ddir);
+ }
+ if (io_u->greq != NULL)
+ fio_guasi_queued(td, ld->io_us, i);
+ }
+ ld->reqs_nr = 0;
+ GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
+
+ return 0;
+}
+
+static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
+{
+ struct guasi_data *ld = td->io_ops->data;
+
+ STFU_GCC(ld);
+ GDBG_PRINT(("fio_guasi_cancel(%p)\n", io_u));
+
+ return guasi_req_cancel(io_u->greq);
+}
+
+static void fio_guasi_cleanup(struct thread_data *td)
+{
+ struct guasi_data *ld = td->io_ops->data;
+
+ if (ld) {
+ guasi_free(ld->hctx);
+ free(ld->reqs);
+ free(ld->io_us);
+ free(ld);
+ td->io_ops->data = NULL;
+ }
+}
+
+static int fio_guasi_init(struct thread_data *td)
+{
+ int maxthr;
+ struct guasi_data *ld = malloc(sizeof(*ld));
+
+ GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->iodepth));
+ memset(ld, 0, sizeof(*ld));
+ maxthr = td->iodepth > GFIO_MIN_THREADS ? td->iodepth: GFIO_MIN_THREADS;
+ if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
+ td_verror(td, errno, "guasi_create");
+ free(ld);
+ return 1;
+ }
+ ld->max_reqs = td->iodepth;
+ ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
+ ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
+ memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
+ ld->reqs_nr = 0;
+
+ td->io_ops->data = ld;
+ GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->iodepth, ld));
+
+ return 0;
+}
+
+static struct ioengine_ops ioengine = {
+ .name = "guasi",
+ .version = FIO_IOOPS_VERSION,
+ .init = fio_guasi_init,
+ .prep = fio_guasi_prep,
+ .queue = fio_guasi_queue,
+ .commit = fio_guasi_commit,
+ .cancel = fio_guasi_cancel,
+ .getevents = fio_guasi_getevents,
+ .event = fio_guasi_event,
+ .cleanup = fio_guasi_cleanup,
+ .open_file = generic_open_file,
+ .close_file = generic_close_file,
+};
+
+#else /* FIO_HAVE_GUASI */
+
+/*
+ * When we have a proper configure system in place, we simply wont build
+ * and install this io engine. For now install a crippled version that
+ * just complains and fails to load.
+ */
+static int fio_guasi_init(struct thread_data fio_unused *td)
+{
+ fprintf(stderr, "fio: guasi not available\n");
+ return 1;
+}
+
+static struct ioengine_ops ioengine = {
+ .name = "guasi",
+ .version = FIO_IOOPS_VERSION,
+ .init = fio_guasi_init,
+};
+
+#endif
+
+static void fio_init fio_guasi_register(void)
+{
+ register_ioengine(&ioengine);
+}
+
+static void fio_exit fio_guasi_unregister(void)
+{
+ unregister_ioengine(&ioengine);
+}
+
projects / fio.git / commitdiff