Change CTC workspace type from PyGpuArrayObject to gpudata

theano/gpuarray/c_code/ctc_wrapper.c

@@ -2,7 +2,7 @@
 
 typedef struct ctc_context {
     struct ctcOptions options;
-    PyGpuArrayObject * workspace;
+    gpudata * workspace;
     int * input_lengths;
     int * flat_labels;
     int * label_lengths;
@@ -25,7 +25,7 @@ void ctc_context_init(ctc_context_t * context, PyGpuContextObject * gpu_context)
 
 void ctc_context_destroy(ctc_context_t * context)
 {
-    Py_XDECREF( context->workspace );
+    gpudata_release( context->workspace );
 
     if ( NULL != context->input_lengths )
         free( context->input_lengths );
@@ -250,8 +250,7 @@ int APPLY_SPECIFIC(ctc_cost_gpu)(PyGpuArrayObject   *  in_activations,
         return 1;
     }
 
-    context->workspace = pygpu_empty(1, &gpu_workspace_size, GA_BYTE,
-        GA_C_ORDER, gpu_context, Py_None );
+    context->workspace = gpudata_alloc( gpu_context->ctx, gpu_workspace_size, NULL, 0, NULL );
 
     if ( NULL == context->workspace )
     {
@@ -264,7 +263,7 @@ int APPLY_SPECIFIC(ctc_cost_gpu)(PyGpuArrayObject   *  in_activations,
 
     ctc_error = ctc_check_result( compute_ctc_loss( activations, gradients,
         context->flat_labels, context->label_lengths, context->input_lengths,
-        alphabet_size, minibatch_size, costs, PyGpuArray_DEV_DATA(context->workspace),
+        alphabet_size, minibatch_size, costs, *(void **)context->workspace,
         context->options ), "Failed to compute CTC loss function!" );
 
     if ( ctc_error )  // Exception is set by ctc_check_result, return error here