1 files changed, 72 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/windows/QpidDllMain.h b/qpid/cpp/src/qpid/sys/windows/QpidDllMain.h
new file mode 100644
index 0000000000..74eaf0256a
--- /dev/null
+++ b/qpid/cpp/src/qpid/sys/windows/QpidDllMain.h
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 this file once in each DLL that relies on SystemInfo.h:
+ * threadSafeShutdown().  Note that Thread.cpp has a more elaborate
+ * DllMain, that also provides this functionality separately.
+ *
+ * Teardown is in the reverse order of the DLL dependencies used
+ * during the load phase.  The calls to DllMain and the static
+ * destructors are from the same thread, so no locking is necessary
+ * and there is no downside to an invocation of DllMain by multiple
+ * Qpid DLLs.
+ */
+
+#ifdef _DLL
+
+#include <qpid/ImportExport.h>
+#include <windows.h>
+
+namespace qpid {
+namespace sys {
+namespace windows {
+
+QPID_IMPORT bool processExiting;
+QPID_IMPORT bool libraryUnloading;
+
+}}} // namespace qpid::sys::SystemInfo
+
+
+BOOL APIENTRY DllMain(HMODULE hm, DWORD reason, LPVOID reserved) {
+    switch (reason) {
+    case DLL_PROCESS_ATTACH:
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+        break;
+
+    case DLL_PROCESS_DETACH:
+        // Remember how the process is terminating this DLL.
+        if (reserved != NULL) {
+            qpid::sys::windows::processExiting = true;
+            // Danger: all threading suspect, including indirect use of malloc or locks.
+            // Think twice before adding more functionality here.
+            return TRUE;
+        }
+        else {
+            qpid::sys::windows::libraryUnloading = true;
+        }
+        break;
+    }
+    return TRUE;
+}
+
+
+#endif