extend file for real

[fio.git] / ioengines.c

diff --git a/ioengines.c b/ioengines.c
index d71e372048112e19010c1dd494a7a4b2872eb5fa..3c75fa6bfed6812e9027e832ff0d26505034b7d9 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);