diff --git a/benchs/bench_assimp/main.cpp b/benchs/bench_assimp/main.cpp
index a349ad7..f4f2d81 100644
--- a/benchs/bench_assimp/main.cpp
+++ b/benchs/bench_assimp/main.cpp
@@ -153,7 +153,7 @@ static void bench_gmio_stl_read(const char* filepath)
     mesh_creator.add_triangle_func = gmio_assimp_add_triangle;
     mesh_creator.end_solid_func = gmio_assimp_end_solid;
 
-    int error = gmio_stl_read_file(filepath, &mesh_creator);
+    int error = gmio_stl_read_file(filepath, &mesh_creator, NULL);
     if (error != GMIO_ERROR_OK)
         printf("GeomIO error: 0x%X\n", error);
 }
diff --git a/benchs/bench_gmio/main.c b/benchs/bench_gmio/main.c
index 6ecf9dc..8698528 100644
--- a/benchs/bench_gmio/main.c
+++ b/benchs/bench_gmio/main.c
@@ -25,7 +25,7 @@ static void bench_gmio_stl_read(const char* filepath)
 
     mesh_creator.cookie = &cookie;
     mesh_creator.add_triangle_func = dummy_process_triangle;
-    error = gmio_stl_read_file(filepath, &mesh_creator);
+    error = gmio_stl_read_file(filepath, &mesh_creator, NULL);
     if (error != GMIO_ERROR_OK)
         printf("GeomIO error: 0x%X\n", error);
 }
diff --git a/benchs/bench_occ/main.cpp b/benchs/bench_occ/main.cpp
index 624b5ca..6ebf1bb 100644
--- a/benchs/bench_occ/main.cpp
+++ b/benchs/bench_occ/main.cpp
@@ -17,7 +17,7 @@ static void bench_gmio_stl_read(const char* filepath)
 {
     Handle_StlMesh_Mesh mesh = new StlMesh_Mesh;
     gmio_stl_mesh_creator_t mesh_creator = gmio_stl_occmesh_creator(mesh);
-    int error = gmio_stl_read_file(filepath, &mesh_creator);
+    int error = gmio_stl_read_file(filepath, &mesh_creator, NULL);
     if (error != GMIO_ERROR_OK)
         printf("GeomIO error: 0x%X\n", error);
 }
diff --git a/src/gmio_stl/stl_io.c b/src/gmio_stl/stl_io.c
index ba95391..17c2f7c 100644
--- a/src/gmio_stl/stl_io.c
+++ b/src/gmio_stl/stl_io.c
@@ -24,7 +24,8 @@
 
 int gmio_stl_read_file(
         const char* filepath,
-        gmio_stl_mesh_creator_t* creator)
+        gmio_stl_mesh_creator_t* creator,
+        gmio_task_iface_t* task_iface)
 {
     int error = GMIO_ERROR_OK;
     FILE* file = NULL;
@@ -34,6 +35,8 @@ int gmio_stl_read_file(
         gmio_transfer_t trsf = { 0 };
         trsf.stream = gmio_stream_stdio(file);
         trsf.buffer = gmio_buffer_default();
+        if (task_iface != NULL)
+            trsf.task_iface = *task_iface;
 
         error = gmio_stl_read(&trsf, creator);
         fclose(file);
diff --git a/src/gmio_stl/stl_io.h b/src/gmio_stl/stl_io.h
index 7876a4c..2359165 100644
--- a/src/gmio_stl/stl_io.h
+++ b/src/gmio_stl/stl_io.h
@@ -35,6 +35,8 @@ GMIO_C_LINKAGE_BEGIN
  *  \param filepath Path to the STL file. A stream is opened with fopen() so
  *         the string has to be encoded using the system's charset (locale-8bit)
  *  \param creator Defines the callbacks for the mesh creation
+ *  \param task_iface The interface object by which the read operation can be
+ *                    controlled. Optional, can be safely set to NULL
  *
  *  Internally, it uses:
  *    \li the builtin stream wrapper around FILE* (see gmio_stream_stdio())
@@ -46,7 +48,8 @@ GMIO_C_LINKAGE_BEGIN
 GMIO_LIBSTL_EXPORT
 int gmio_stl_read_file(
         const char* filepath,
-        gmio_stl_mesh_creator_t* creator);
+        gmio_stl_mesh_creator_t* creator,
+        gmio_task_iface_t* task_iface);
 
 /*! Reads STL data from stream, format is automatically guessed
  *