1 files changed, 52 insertions, 0 deletions

diff --git a/src/libs/dutil/WixToolset.DUtil/inc/queutil.h b/src/libs/dutil/WixToolset.DUtil/inc/queutil.h
new file mode 100644
index 00000000..3b88825e
--- /dev/null
+++ b/src/libs/dutil/WixToolset.DUtil/inc/queutil.h
@@ -0,0 +1,52 @@
+#pragma once
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ReleaseQueue(qh, pfn, pv) if (qh) { QueDestroy(qh, pfn, pv); }
+#define ReleaseNullQue(qh, pfv, pv) if (qh) { QueDestroy(qh, pfn, pv); qh = NULL; }
+
+typedef void* QUEUTIL_QUEUE_HANDLE;
+
+typedef void(CALLBACK* PFNQUEUTIL_QUEUE_RELEASE_VALUE)(
+    __in void* pvValue,
+    __in void* pvContext
+    );
+
+extern const int QUEUTIL_QUEUE_HANDLE_BYTES;
+
+/********************************************************************
+QueCreate - Creates a simple queue. It is not thread safe.
+
+********************************************************************/
+HRESULT DAPI QueCreate(
+    __out_bcount(QUEUTIL_QUEUE_HANDLE_BYTES) QUEUTIL_QUEUE_HANDLE* phQueue
+    );
+
+HRESULT DAPI QueEnqueue(
+    __in_bcount(QUEUTIL_QUEUE_HANDLE_BYTES) QUEUTIL_QUEUE_HANDLE hQueue,
+    __in void* pvValue
+    );
+
+/********************************************************************
+QueDequeue - Returns the value from the beginning of the queue,
+             or E_NOMOREITEMS if the queue is empty.
+
+********************************************************************/
+HRESULT DAPI QueDequeue(
+    __in_bcount(QUEUTIL_QUEUE_HANDLE_BYTES) QUEUTIL_QUEUE_HANDLE hQueue,
+    __out void** ppvValue
+    );
+
+void DAPI QueDestroy(
+    __in_bcount(QUEUTIL_QUEUE_HANDLE_BYTES) QUEUTIL_QUEUE_HANDLE hQueue,
+    __in_opt PFNQUEUTIL_QUEUE_RELEASE_VALUE pfnReleaseValue,
+    __in_opt void* pvContext
+    );
+
+#ifdef __cplusplus
+}
+#endif