Move USleep to utils/

src/utils/CMakeLists.txt

@@ -19,6 +19,8 @@ list(APPEND UTILS_SOURCES
     ${UTILS_DIR}/BackendBinding.h
     ${UTILS_DIR}/NXTHelpers.cpp
     ${UTILS_DIR}/NXTHelpers.h
+    ${UTILS_DIR}/SystemUtils.cpp
+    ${UTILS_DIR}/SystemUtils.h
 )
 
 if (NXT_ENABLE_D3D12)

src/utils/SystemUtils.cpp

@@ -0,0 +1,39 @@
+// Copyright 2017 The NXT Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "common/Platform.h"
+
+#if defined(NXT_PLATFORM_WINDOWS)
+    #include <Windows.h>
+#elif defined(NXT_PLATFORM_POSIX)
+   #include <unistd.h>
+#else
+    #error "Unsupported platform."
+#endif
+
+namespace utils {
+
+    #if defined(NXT_PLATFORM_WINDOWS)
+        void USleep(int usecs) {
+            Sleep(static_cast<DWORD>(usecs / 1000));
+        }
+    #elif defined(NXT_PLATFORM_POSIX)
+        void USleep(int usecs) {
+            usleep(usecs);
+        }
+    #else
+        #error "Implement USleep for your platform."
+    #endif
+
+}

src/utils/SystemUtils.h

@@ -0,0 +1,19 @@
+// Copyright 2017 The NXT Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace utils {
+
+    void USleep(int usecs);
+
+}