refactor: add missing #pragma once directives

Signed-off-by: Jaroslaw Warchulski <jaroslaw.warchulski@intel.com>

level_zero/core/test/unit_tests/experimental/test_graph_export.h

@@ -5,6 +5,7 @@
  *
  */
 
+#pragma once
 #include "shared/test/common/helpers/variable_backup.h"
 #include "shared/test/common/mocks/mock_io_functions.h"
 

level_zero/core/test/unit_tests/mocks/mock_cmdqueue_handle_indirect_allocs.h

@@ -1,10 +1,11 @@
 /*
- * Copyright (C) 2024 Intel Corporation
+ * Copyright (C) 2024-2025 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
  */
 
+#pragma once
 #include "level_zero/core/test/unit_tests/mocks/mock_cmdqueue.h"
 
 namespace L0 {

level_zero/include/level_zero/ze_intel_results.h

@@ -5,6 +5,10 @@
  *
  */
 
+#if defined(__cplusplus)
+#pragma once
+#endif
+
 #ifndef _ZE_INTEL_RESULTS_H
 #define _ZE_INTEL_RESULTS_H
 

level_zero/include/level_zero/ze_stypes.h

@@ -5,6 +5,10 @@
  *
  */
 
+#if defined(__cplusplus)
+#pragma once
+#endif
+
 #ifndef _ZE_STYPES_H
 #define _ZE_STYPES_H
 

level_zero/tools/source/debug/linux/debug_session_factory.h

@@ -5,6 +5,7 @@
  *
  */
 
+#pragma once
 #include "level_zero/tools/source/debug/debug_session.h"
 
 namespace L0 {

level_zero/tools/source/metrics/linux/os_metric_ip_sampling_imp_linux.h

@@ -5,6 +5,7 @@
  *
  */
 
+#pragma once
 #include "level_zero/tools/source/metrics/os_interface_metric.h"
 
 namespace L0 {

level_zero/tools/test/unit_tests/sources/debug/linux/prelim/debug_session_fixtures_linux.h

@@ -5,6 +5,7 @@
  *
  */
 
+#pragma once
 #include "shared/source/debugger/DebuggerStateSaveHeader.h"
 #include "shared/source/device/device.h"
 #include "shared/source/os_interface/linux/drm_debug.h"

level_zero/tools/test/unit_tests/sources/debug/linux/xe/debug_session_fixtures_linux_xe.h

@@ -5,6 +5,7 @@
  *
  */
 
+#pragma once
 #include "shared/source/debugger/DebuggerStateSaveHeader.h"
 #include "shared/source/os_interface/linux/drm_debug.h"
 #include "shared/source/os_interface/linux/xe/eudebug/eudebug_interface_upstream.h"