feature: add host functions workers

* add common host function worker interface
* add worker as a single thread per csr with 3 modes
* add logic for waiting on internal tag, check gpu hang
* if tag is in pending state, read callback data, run callback
and signal completion
* threads will exit the work loop once stop request
is called in finish
* add multi thread unit tests

Related-To: NEO-14577
Signed-off-by: Kamil Kopryk <kamil.kopryk@intel.com>

shared/source/command_stream/host_function.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2025 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "shared/source/command_stream/host_function.h"
+
+#include "shared/source/command_stream/command_stream_receiver.h"
+#include "shared/source/command_stream/host_function_worker_atomic.h"
+#include "shared/source/command_stream/host_function_worker_counting_semaphore.h"
+#include "shared/source/command_stream/host_function_worker_cv.h"
+#include "shared/source/command_stream/host_function_worker_interface.h"
+
+namespace NEO::HostFunctionFactory {
+
+IHostFunctionWorker *createHostFunctionWorker(int32_t hostFunctionWorkerMode,
+                                              bool isAubMode,
+                                              const std::function<void(GraphicsAllocation &)> &downloadAllocationImpl,
+                                              GraphicsAllocation *allocation,
+                                              HostFunctionData *data) {
+
+    bool skipHostFunctionExecution = isAubMode;
+
+    switch (hostFunctionWorkerMode) {
+    default:
+    case 0:
+        return new HostFunctionWorkerCountingSemaphore(skipHostFunctionExecution, downloadAllocationImpl, allocation, data);
+    case 1:
+        return new HostFunctionWorkerCV(skipHostFunctionExecution, downloadAllocationImpl, allocation, data);
+    case 2:
+        return new HostFunctionWorkerAtomic(skipHostFunctionExecution, downloadAllocationImpl, allocation, data);
+    }
+}
+
+} // namespace NEO::HostFunctionFactory