Feature/send and sync (#48)

Make wrapper classes Send and Sync as appropriate.

Author: geekbeast

crates/openvino/src/core.rs

@@ -20,6 +20,8 @@ pub struct Core {
 }
 drop_using_function!(Core, ie_core_free);
 
+unsafe impl Send for Core {}
+
 impl Core {
     /// Construct a new OpenVINO [`Core`]--this is the primary entrypoint for constructing and using
     /// inference networks. Because this function may load OpenVINO's shared libraries at runtime,

crates/openvino/src/network.rs

@@ -21,6 +21,9 @@ pub struct CNNNetwork {
 }
 drop_using_function!(CNNNetwork, ie_network_free);
 
+unsafe impl Send for CNNNetwork {}
+unsafe impl Sync for CNNNetwork {}
+
 impl CNNNetwork {
     /// Retrieve the number of network inputs.
     pub fn get_inputs_len(&self) -> Result<usize> {
@@ -116,6 +119,8 @@ pub struct ExecutableNetwork {
 }
 drop_using_function!(ExecutableNetwork, ie_exec_network_free);
 
+unsafe impl Send for ExecutableNetwork {}
+
 impl ExecutableNetwork {
     /// Create an [`InferRequest`].
     pub fn create_infer_request(&mut self) -> Result<InferRequest> {

crates/openvino/src/request.rs

@@ -12,6 +12,9 @@ pub struct InferRequest {
 }
 drop_using_function!(InferRequest, ie_infer_request_free);
 
+unsafe impl Send for InferRequest {}
+unsafe impl Sync for InferRequest {}
+
 impl InferRequest {
     /// Set the batch size of the inference requests.
     pub fn set_batch_size(&mut self, size: usize) -> Result<()> {