Implement new Rate Control

[fio.git] / ioengines.c

diff --git a/ioengines.c b/ioengines.c
index f4eae04db6df5d072103191f05b187fcb6f19e80..9c5ac603d3291c04c7d754fdc8ddea56389b0d5d 100644 (file)
--- a/ioengines.c
+++ b/ioengines.c
@@ -107,6 +107,20 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
        ops = dlsym(dlhandle, engine_lib);
        if (!ops)
                ops = dlsym(dlhandle, "ioengine");
+
+       /*
+        * For some external engines (like C++ ones) it is not that trivial
+        * to provide a non-static ionengine structure that we can reference.
+        * Instead we call a method which allocates the required ioengine
+        * structure.
+        */
+       if (!ops) {
+               get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine");
+
+               if (get_ioengine)
+                       get_ioengine(&ops);
+       }
+
        if (!ops) {
                td_vmsg(td, -1, dlerror(), "dlsym");
                dlclose(dlhandle);
@@ -206,7 +220,7 @@ int td_io_prep(struct thread_data *td, struct io_u *io_u)
 }
 
 int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max,
-                   struct timespec *t)
+                   const struct timespec *t)
 {
        int r = 0;
 
@@ -250,13 +264,15 @@ out:
 
 int 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;
 
        dprint_io_u(io_u, "queue");
        fio_ro_check(td, io_u);
 
        assert((io_u->flags & IO_U_F_FLIGHT) == 0);
-       io_u->flags |= IO_U_F_FLIGHT;
+       io_u_set(io_u, IO_U_F_FLIGHT);
 
        assert(fio_file_open(io_u->file));
 
@@ -280,13 +296,29 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
                                        sizeof(struct timeval));
        }
 
-       if (ddir_rw(acct_ddir(io_u)))
-               td->io_issues[acct_ddir(io_u)]++;
+       if (ddir_rw(ddir)) {
+               td->io_issues[ddir]++;
+               td->io_issue_bytes[ddir] += buflen;
+               td->rate_io_issue_bytes[ddir] += buflen;
+       }
 
        ret = td->io_ops->queue(td, io_u);
 
        unlock_file(td, io_u->file);
 
+       if (ret == FIO_Q_BUSY && ddir_rw(ddir)) {
+               td->io_issues[ddir]--;
+               td->io_issue_bytes[ddir] -= buflen;
+               td->rate_io_issue_bytes[ddir] -= buflen;
+       }
+
+       /*
+        * If an error was seen and the io engine didn't propagate it
+        * back to 'td', do so.
+        */
+       if (io_u->error && !td->error)
+               td_verror(td, io_u->error, "td_io_queue");
+
        /*
         * Add warning for O_DIRECT so that users have an easier time
         * spotting potentially bad alignment. If this triggers for the first
@@ -297,10 +329,11 @@ int td_io_queue(struct thread_data *td, struct io_u *io_u)
            td->o.odirect) {
 
                log_info("fio: first direct IO errored. File system may not "
-                        "support direct IO, or iomem_align= is bad.\n");
+                        "support direct IO, or iomem_align= is bad. Try "
+                        "setting direct=0.\n");
        }
 
-       if (!td->io_ops->commit || ddir_trim(io_u->ddir)) {
+       if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) {
                io_u_mark_submit(td, 1);
                io_u_mark_complete(td, 1);
        }
@@ -354,6 +387,9 @@ int td_io_init(struct thread_data *td)
                        td->error = ret;
        }
 
+       if (!ret && (td->io_ops->flags & FIO_NOIO))
+               td->flags |= TD_F_NOIO;
+
        return ret;
 }
 
@@ -437,6 +473,17 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
                        goto err;
                }
        }
+#ifdef FIO_HAVE_STREAMID
+       if (td->o.fadvise_stream &&
+           (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) {
+               off_t stream = td->o.fadvise_stream;
+
+               if (posix_fadvise(f->fd, stream, f->io_size, POSIX_FADV_STREAMID) < 0) {
+                       td_verror(td, errno, "fadvise streamid");
+                       goto err;
+               }
+       }
+#endif
 
 #ifdef FIO_OS_DIRECTIO
        /*
@@ -475,11 +522,21 @@ int td_io_close_file(struct thread_data *td, struct fio_file *f)
        fio_file_set_closing(f);
 
        disk_util_dec(f->du);
-       unlock_file_all(td, f);
+
+       if (td->o.file_lock_mode != FILE_LOCK_NONE)
+               unlock_file_all(td, f);
 
        return put_file(td, f);
 }
 
+int td_io_unlink_file(struct thread_data *td, struct fio_file *f)
+{
+       if (td->io_ops->unlink_file)
+               return td->io_ops->unlink_file(td, f);
+       else
+               return unlink(f->file_name);
+}
+
 int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
 {
        if (!td->io_ops->get_file_size)
@@ -488,7 +545,8 @@ int td_io_get_file_size(struct thread_data *td, struct fio_file *f)
        return td->io_ops->get_file_size(td, f);
 }
 
-static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
+static int do_sync_file_range(const struct thread_data *td,
+                             struct fio_file *f)
 {
        off64_t offset, nbytes;
 
@@ -501,7 +559,7 @@ static int do_sync_file_range(struct thread_data *td, struct fio_file *f)
        return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range);
 }
 
-int do_io_u_sync(struct thread_data *td, struct io_u *io_u)
+int do_io_u_sync(const struct thread_data *td, struct io_u *io_u)
 {
        int ret;
 
@@ -527,7 +585,7 @@ int do_io_u_sync(struct thread_data *td, struct io_u *io_u)
        return ret;
 }
 
-int do_io_u_trim(struct thread_data *td, struct io_u *io_u)
+int do_io_u_trim(const struct thread_data *td, struct io_u *io_u)
 {
 #ifndef FIO_HAVE_TRIM
        io_u->error = EINVAL;