Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 141 insertions, 0 deletions

diff --git a/sal/osl/all/signalshared.cxx b/sal/osl/all/signalshared.cxx
new file mode 100644
index 000000000..530413f26
--- /dev/null
+++ b/sal/osl/all/signalshared.cxx
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   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 .
+ */
+
+#include <sal/config.h>
+
+#include <stdlib.h>
+
+#include <signalshared.hxx>
+
+#include <osl/diagnose.h>
+#include <mutex>
+
+namespace
+{
+oslSignalHandlerImpl* SignalList;
+bool bInitSignal = false;
+
+std::mutex& getSignalMutex()
+{
+    static std::mutex aMutex;
+    return aMutex;
+}
+}
+
+oslSignalAction callSignalHandler(oslSignalInfo* pInfo)
+{
+    oslSignalHandlerImpl* pHandler = SignalList;
+    oslSignalAction Action = osl_Signal_ActCallNextHdl;
+
+    while (pHandler)
+    {
+        if ((Action = pHandler->Handler(pHandler->pData, pInfo)) != osl_Signal_ActCallNextHdl)
+            break;
+
+        pHandler = pHandler->pNext;
+    }
+
+    return Action;
+}
+
+oslSignalHandler SAL_CALL osl_addSignalHandler(oslSignalHandlerFunction handler, void* pData)
+{
+    if (!handler)
+        return nullptr;
+
+    oslSignalHandlerImpl* pHandler
+        = static_cast<oslSignalHandlerImpl*>(calloc(1, sizeof(oslSignalHandlerImpl)));
+
+    std::scoped_lock aGuard(getSignalMutex());
+
+    if (!bInitSignal)
+        bInitSignal = onInitSignal();
+
+    if (pHandler)
+    {
+        pHandler->Handler = handler;
+        pHandler->pData = pData;
+
+        pHandler->pNext = SignalList;
+        SignalList = pHandler;
+
+        return pHandler;
+    }
+
+    return nullptr;
+}
+
+sal_Bool SAL_CALL osl_removeSignalHandler(oslSignalHandler handler)
+{
+    std::scoped_lock aGuard(getSignalMutex());
+
+    if (!bInitSignal)
+        bInitSignal = onInitSignal();
+
+    oslSignalHandlerImpl* pHandler = SignalList;
+    oslSignalHandlerImpl* pPrevious = nullptr;
+
+    while (pHandler)
+    {
+        if (pHandler == handler)
+        {
+            if (pPrevious)
+                pPrevious->pNext = pHandler->pNext;
+            else
+                SignalList = pHandler->pNext;
+
+            if (SignalList == nullptr)
+                bInitSignal = onDeInitSignal();
+
+            free(pHandler);
+
+            return true;
+        }
+
+        pPrevious = pHandler;
+        pHandler = pHandler->pNext;
+    }
+
+    return false;
+}
+
+oslSignalAction SAL_CALL osl_raiseSignal(sal_Int32 userSignal, void* userData)
+{
+    std::scoped_lock aGuard(getSignalMutex());
+
+    if (!bInitSignal)
+        bInitSignal = onInitSignal();
+
+    oslSignalInfo info;
+    info.Signal = osl_Signal_User;
+    info.UserSignal = userSignal;
+    info.UserData = userData;
+
+    oslSignalAction action = callSignalHandler(&info);
+
+    return action;
+}
+
+sal_Bool SAL_CALL osl_setErrorReporting(sal_Bool /*bEnable*/)
+{
+    // this is part of the stable API
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */