configure: new --dynamic-libengines build option

[fio.git] / ioengines.c

diff --git a/ioengines.c b/ioengines.c
index aa4ccd2755c96f843d69333448795b0b16061723..78262bc1a3c70484701345e524f17fb06e60870e 100644 (file)
--- a/ioengines.c
+++ b/ioengines.c
@@ -75,6 +75,19 @@ static struct ioengine_ops *find_ioengine(const char *name)
        return NULL;
 }
 
+#ifdef CONFIG_DYNAMIC_ENGINES
+static void *dlopen_external(struct thread_data *td, const char *engine)
+{
+       char engine_path[PATH_MAX];
+
+       sprintf(engine_path, "%s/lib%s.so", FIO_EXT_ENG_DIR, engine);
+
+       return dlopen(engine_path, RTLD_LAZY);
+}
+#else
+#define dlopen_external(td, engine) (NULL)
+#endif
+
 static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
                                            const char *engine_lib)
 {
@@ -86,8 +99,11 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
        dlerror();
        dlhandle = dlopen(engine_lib, RTLD_LAZY);
        if (!dlhandle) {
-               td_vmsg(td, -1, dlerror(), "dlopen");
-               return NULL;
+               dlhandle = dlopen_external(td, engine_lib);
+               if (!dlhandle) {
+                       td_vmsg(td, -1, dlerror(), "dlopen");
+                       return NULL;
+               }
        }
 
        /*
@@ -121,19 +137,15 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
        return ops;
 }
 
-static struct ioengine_ops *__load_ioengine(const char *name)
+static struct ioengine_ops *__load_ioengine(const char *engine)
 {
-       char engine[64];
-
-       engine[sizeof(engine) - 1] = '\0';
-       strncpy(engine, name, sizeof(engine) - 1);
-
        /*
         * linux libaio has alias names, so convert to what we want
         */
        if (!strncmp(engine, "linuxaio", 8)) {
-               dprint(FD_IO, "converting ioengine name: %s -> libaio\n", name);
-               strcpy(engine, "libaio");
+               dprint(FD_IO, "converting ioengine name: %s -> libaio\n",
+                      engine);
+               engine = "libaio";
        }
 
        dprint(FD_IO, "load ioengine %s\n", engine);
@@ -322,6 +334,7 @@ enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u)
                                        sizeof(io_u->issue_time));
        }
 
+
        if (ddir_rw(ddir)) {
                if (!(io_u->flags & IO_U_F_VER_LIST)) {
                        td->io_issues[ddir]++;
@@ -377,14 +390,16 @@ enum fio_q_status td_io_queue(struct thread_data *td, struct io_u *io_u)
        }
 
        if (ret == FIO_Q_COMPLETED) {
-               if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir)) {
+               if (ddir_rw(io_u->ddir) ||
+                   (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING)) {
                        io_u_mark_depth(td, 1);
                        td->ts.total_io_u[io_u->ddir]++;
                }
        } else if (ret == FIO_Q_QUEUED) {
                td->io_u_queued++;
 
-               if (ddir_rw(io_u->ddir) || ddir_sync(io_u->ddir))
+               if (ddir_rw(io_u->ddir) ||
+                   (ddir_sync(io_u->ddir) && td->runstate != TD_FSYNCING))
                        td->ts.total_io_u[io_u->ddir]++;
 
                if (td->io_u_queued >= td->o.iodepth_batch)