6 files changed, 852 insertions, 0 deletions
diff --git a/salhelper/source/condition.cxx b/salhelper/source/condition.cxx
new file mode 100644
index 000000000..9f1408deb
--- /dev/null
+++ b/salhelper/source/condition.cxx
@@ -0,0 +1,130 @@
+/* -*- 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 <salhelper/condition.hxx>
+#include <osl/time.h>
+#include <osl/mutex.hxx>
+
+using namespace salhelper;
+
+
+/******************************************************************
+ *                                                                *
+ *                     Condition                                  *
+ *                                                                *
+ ******************************************************************/
+
+Condition::Condition(osl::Mutex& aMutex)
+    : m_aMutex(aMutex)
+{
+}
+
+
+Condition::~Condition()
+{
+}
+
+
+/******************************************************************
+ *                                                                *
+ *              ConditionModifier                                 *
+ *                                                                *
+ ******************************************************************/
+
+ConditionModifier::ConditionModifier(Condition& aCond)
+    : m_aCond(aCond)
+{
+    m_aCond.m_aMutex.acquire();
+}
+
+
+ConditionModifier::~ConditionModifier()
+{
+    if(m_aCond.applies())
+        m_aCond.m_aCondition.set();
+
+    m_aCond.m_aMutex.release();
+}
+
+
+/******************************************************************
+ *                                                                *
+ *              ConditionWaiter                                   *
+ *                                                                *
+ ******************************************************************/
+
+ConditionWaiter::timedout::timedout() {}
+
+ConditionWaiter::timedout::timedout(timedout const &) {}
+
+ConditionWaiter::timedout::~timedout() {}
+
+ConditionWaiter::timedout &
+ConditionWaiter::timedout::operator =(timedout const &) { return *this; }
+
+ConditionWaiter::ConditionWaiter(Condition& aCond)
+    : m_aCond(aCond)
+{
+    while(true) {
+        m_aCond.m_aCondition.wait();
+        m_aCond.m_aMutex.acquire();
+
+        if(m_aCond.applies())
+            break;
+        else {
+            m_aCond.m_aCondition.reset();
+            m_aCond.m_aMutex.release();
+        }
+    }
+}
+
+
+ConditionWaiter::ConditionWaiter(Condition& aCond,sal_uInt32 milliSec)
+    : m_aCond(aCond)
+{
+    TimeValue aTime;
+    aTime.Seconds = milliSec / 1000;
+    aTime.Nanosec = 1000000 * ( milliSec % 1000 );
+
+    while(true) {
+        if( m_aCond.m_aCondition.wait(&aTime) ==
+            osl::Condition::result_timeout )
+            throw timedout();
+
+        m_aCond.m_aMutex.acquire();
+
+        if(m_aCond.applies())
+            break;
+        else {
+            m_aCond.m_aCondition.reset();
+            m_aCond.m_aMutex.release();
+        }
+    }
+}
+
+
+ConditionWaiter::~ConditionWaiter()
+{
+    if(! m_aCond.applies())
+        m_aCond.m_aCondition.reset();
+    m_aCond.m_aMutex.release();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/salhelper/source/dynload.cxx b/salhelper/source/dynload.cxx
new file mode 100644
index 000000000..d3b8e70fb
--- /dev/null
+++ b/salhelper/source/dynload.cxx
@@ -0,0 +1,112 @@
+/* -*- 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 <salhelper/dynload.hxx>
+
+namespace salhelper
+{
+
+typedef void* (*ApiInitFunction) ();
+
+ORealDynamicLoader::ORealDynamicLoader(ORealDynamicLoader ** ppSetToZeroInDestructor_,
+                       const OUString& moduleName,
+                       const OUString& initFunction,
+                       void* pApi,
+                       oslModule pModule)
+    : m_pApi(pApi)
+    , m_refCount(1)
+    , m_pModule(pModule)
+    , m_strModuleName(moduleName)
+    , m_strInitFunction(initFunction)
+    , ppSetToZeroInDestructor( ppSetToZeroInDestructor_ )
+{
+}
+
+ORealDynamicLoader* ORealDynamicLoader::newInstance(ORealDynamicLoader ** ppSetToZeroInDestructor,
+                                  const OUString& moduleName,
+                                  const OUString& initFunction)
+{
+#ifdef DISABLE_DYNLOADING
+    (void) ppSetToZeroInDestructor;
+    (void) moduleName;
+    (void) initFunction;
+
+    return NULL;
+#else
+    ApiInitFunction initFunc;
+    oslModule pModule = osl_loadModule(moduleName.pData, SAL_LOADMODULE_DEFAULT);
+
+    if ( !pModule )
+    {
+        return nullptr;
+    }
+
+    initFunc = reinterpret_cast<ApiInitFunction>(osl_getFunctionSymbol(
+        pModule, initFunction.pData));
+
+    if ( !initFunc )
+    {
+        osl_unloadModule(pModule);
+        return nullptr;
+    }
+
+    return(new ORealDynamicLoader(ppSetToZeroInDestructor, moduleName,
+                                 initFunction,
+                                 initFunc(),
+                                 pModule));
+#endif
+}
+
+ORealDynamicLoader::~ORealDynamicLoader()
+{
+    // set the address to zero
+    if( ppSetToZeroInDestructor )
+        *ppSetToZeroInDestructor = nullptr;
+
+    if (m_pModule)
+    {
+#ifndef DISABLE_DYNLOADING
+        osl_unloadModule(m_pModule);
+#endif
+        m_pModule = nullptr;
+    }
+}
+
+sal_uInt32 ORealDynamicLoader::acquire()
+{
+    return ++m_refCount;
+}
+
+sal_uInt32 ORealDynamicLoader::release()
+{
+    sal_uInt32 nRet = --m_refCount;
+    if( nRet == 0 )
+        delete this;
+    return nRet;
+}
+
+
+void* ORealDynamicLoader::getApi() const
+{
+    return m_pApi;
+}
+
+} // namespace salhelper
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/salhelper/source/gcc3.map b/salhelper/source/gcc3.map
new file mode 100644
index 000000000..3d0d90d4a
--- /dev/null
+++ b/salhelper/source/gcc3.map
@@ -0,0 +1,139 @@
+#
+# 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 .
+#
+UDK_3_0_0 { # should have been UDK_3.0
+    global:
+    _ZTI*; _ZTS*; # weak RTTI symbols for C++ exceptions
+
+    _ZN9salhelper18ORealDynamicLoader11newInstanceEPPS0_RKN3rtl8OUStringES6_;
+    _ZN9salhelper18ORealDynamicLoader7acquireEv;
+    _ZN9salhelper18ORealDynamicLoader7releaseEv;
+    _ZN9salhelper18ORealDynamicLoaderC1EPPS0_RKN3rtl8OUStringES6_PvS7_;
+    _ZN9salhelper18ORealDynamicLoaderC2EPPS0_RKN3rtl8OUStringES6_PvS7_;
+    _ZN9salhelper18ORealDynamicLoaderD0Ev;
+    _ZN9salhelper18ORealDynamicLoaderD1Ev;
+    _ZN9salhelper18ORealDynamicLoaderD2Ev;
+    _ZN9salhelper21SimpleReferenceObjectD0Ev;
+    _ZN9salhelper21SimpleReferenceObjectD1Ev;
+    _ZN9salhelper21SimpleReferenceObjectD2Ev;
+    _ZN9salhelper21SimpleReferenceObjectdlEPv;
+
+    # Introducing a question mark at the end because of
+    # marginal type discrepancy there is a difference in the
+    # mangled name between Linux and macOS, see #i69351#
+    _ZN9salhelper21SimpleReferenceObjectnwE?; # salhelper::SimpleReferenceObject::operator new (std::size_t)
+
+    _ZNK9salhelper18ORealDynamicLoader6getApiEv;
+    # _ZTIN9salhelper18ORealDynamicLoaderE;
+    # _ZTSN9salhelper18ORealDynamicLoaderE;
+    _ZTVN9salhelper18ORealDynamicLoaderE;
+    # _ZTIN9salhelper21SimpleReferenceObjectE;
+    # _ZTSN9salhelper21SimpleReferenceObjectE;
+    _ZTVN9salhelper21SimpleReferenceObjectE;
+
+    local:
+        *;
+};
+
+UDK_3.1 {
+    global:
+        _ZN9salhelper21SimpleReferenceObjectdlEPvRKSt9nothrow_t;
+
+    # Introducing a wildcard right in the middle because due to
+    # marginal type discrepancy there is a difference in the
+    # mangled name between Linux and macOS see #i69351#
+    _ZN9salhelper21SimpleReferenceObjectnwE?RKSt9nothrow_t; # salhelper::SimpleReferenceObject::operator new (std::size_t, std::nothrow_t const&)
+
+        _ZN9salhelper9ConditionC1ERN3osl5MutexE;
+        _ZN9salhelper9ConditionC2ERN3osl5MutexE;
+        _ZN9salhelper9ConditionD0Ev;
+        _ZN9salhelper9ConditionD1Ev;
+        _ZN9salhelper9ConditionD2Ev;
+        # _ZTIN9salhelper9ConditionE;
+        # _ZTIS9salhelper9ConditionE;
+
+        _ZN9salhelper17ConditionModifierC1ERNS_9ConditionE;
+        _ZN9salhelper17ConditionModifierC2ERNS_9ConditionE;
+        _ZN9salhelper17ConditionModifierD1Ev;
+        _ZN9salhelper17ConditionModifierD2Ev;
+
+        _ZN9salhelper15ConditionWaiterC1ERNS_9ConditionE;
+        _ZN9salhelper15ConditionWaiterC1ERNS_9ConditionE?;
+        _ZN9salhelper15ConditionWaiterC2ERNS_9ConditionE;
+        _ZN9salhelper15ConditionWaiterC2ERNS_9ConditionE?;
+        _ZN9salhelper15ConditionWaiterD1Ev;
+        _ZN9salhelper15ConditionWaiterD2Ev;
+
+        _ZN9salhelper15ConditionWaiter8timedoutaSERKS1_;
+        _ZN9salhelper15ConditionWaiter8timedoutC1ERKS1_;
+        _ZN9salhelper15ConditionWaiter8timedoutC1Ev;
+        _ZN9salhelper15ConditionWaiter8timedoutC2ERKS1_;
+        _ZN9salhelper15ConditionWaiter8timedoutC2Ev;
+        _ZN9salhelper15ConditionWaiter8timedoutD0Ev;
+        _ZN9salhelper15ConditionWaiter8timedoutD1Ev;
+        _ZN9salhelper15ConditionWaiter8timedoutD2Ev;
+        # _ZTIN9salhelper15ConditionWaiter8timedoutE;
+        # _ZTSN9salhelper15ConditionWaiter8timedoutE;
+
+
+    _ZN9salhelper5TimerC1ERKNS_10TTimeValueE;
+    _ZN9salhelper5TimerC1ERKNS_10TTimeValueES3_;
+    _ZN9salhelper5TimerC1Ev;
+    _ZN9salhelper5TimerC2ERKNS_10TTimeValueE;
+    _ZN9salhelper5TimerC2ERKNS_10TTimeValueES3_;
+    _ZN9salhelper5TimerC2Ev;
+    _ZN9salhelper5TimerD0Ev;
+    _ZN9salhelper5TimerD1Ev;
+    _ZN9salhelper5TimerD2Ev;
+    _ZN9salhelper5Timer5startEv;
+    _ZN9salhelper5Timer4stopEv;
+    _ZNK9salhelper5Timer9isTickingEv;
+    _ZNK9salhelper5Timer9isExpiredEv;
+    _ZNK9salhelper5Timer13expiresBeforeEPKS0_;
+    _ZN9salhelper5Timer15setAbsoluteTimeERKNS_10TTimeValueE;
+    _ZN9salhelper5Timer16setRemainingTimeERKNS_10TTimeValueE;
+    _ZN9salhelper5Timer16setRemainingTimeERKNS_10TTimeValueES3_;
+    _ZN9salhelper5Timer7addTimeERKNS_10TTimeValueE;
+    _ZNK9salhelper5Timer16getRemainingTimeEv;
+
+
+} UDK_3_0_0;
+
+LIBO_UDK_3.6 { # symbols available in >= LibO 3.6
+    global:
+        _ZN9salhelper6Thread12onTerminatedEv;
+            # salhelper::Thread::onTerminated()
+        _ZN9salhelper6Thread3runEv; # salhelper::Thread::run()
+        _ZN9salhelper6Thread6launchEv; # salhelper::Thread::launch()
+        _ZN9salhelper6ThreadC1EPKc; # salhelper::Thread::Thread(char const*)
+        _ZN9salhelper6ThreadC2EPKc; # salhelper::Thread::Thread(char const*)
+        _ZN9salhelper6ThreadD0Ev; # salhelper::Thread::~Thread()
+        _ZN9salhelper6ThreadD1Ev; # salhelper::Thread::~Thread()
+        _ZN9salhelper6ThreadD2Ev; # salhelper::Thread::~Thread()
+        _ZTVN9salhelper6ThreadE; # vtable for salhelper::Thread
+        _ZThn*_N9salhelper6Thread12onTerminatedEv;
+            # non-virtual thunk to salhelper::Thread::onTerminated()
+        _ZThn*_N9salhelper6Thread3runEv;
+            # non-virtual thunk to salhelper::Thread::run()
+} UDK_3.1;
+
+# Unique libstdc++ symbols:
+GLIBCXX_3.4 {
+    global:
+        _ZGVNSt7num_put*; _ZNSt7num_put*;
+        _ZNSs4_Rep20_S_empty_rep_storageE;
+};
diff --git a/salhelper/source/simplereferenceobject.cxx b/salhelper/source/simplereferenceobject.cxx
new file mode 100644
index 000000000..d57e7f0cd
--- /dev/null
+++ b/salhelper/source/simplereferenceobject.cxx
@@ -0,0 +1,62 @@
+/* -*- 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 <salhelper/simplereferenceobject.hxx>
+
+#include <cassert>
+#include <new>
+
+using salhelper::SimpleReferenceObject;
+
+SimpleReferenceObject::~SimpleReferenceObject()
+{
+    assert(m_nCount == 0);
+}
+
+void *SimpleReferenceObject::operator new(std::size_t nSize)
+{
+    return ::operator new(nSize);
+}
+
+void *SimpleReferenceObject::operator new(std::size_t nSize,
+                                           std::nothrow_t const &)
+{
+#if defined(_WIN32)
+    return ::operator new(nSize);
+        // WNT lacks a global nothrow operator new...
+#else // _WIN32
+    return ::operator new(nSize, std::nothrow);
+#endif // _WIN32
+}
+
+void SimpleReferenceObject::operator delete(void * pPtr)
+{
+    ::operator delete(pPtr);
+}
+
+void SimpleReferenceObject::operator delete(void * pPtr, std::nothrow_t const &)
+{
+#if defined(_WIN32)
+    ::operator delete(pPtr); // WNT lacks a global nothrow operator delete...
+#else // _WIN32
+    ::operator delete(pPtr, std::nothrow);
+#endif // _WIN32
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/salhelper/source/thread.cxx b/salhelper/source/thread.cxx
new file mode 100644
index 000000000..66713a2a3
--- /dev/null
+++ b/salhelper/source/thread.cxx
@@ -0,0 +1,45 @@
+/* -*- 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/.
+ */
+
+#include <sal/config.h>
+
+#include <stdexcept>
+#include <string>
+
+#include <comphelper/scopeguard.hxx>
+#include <sal/log.hxx>
+#include <salhelper/thread.hxx>
+
+salhelper::Thread::Thread(char const * name): name_(name) {}
+
+void salhelper::Thread::launch() {
+    SAL_INFO("salhelper.thread", "launch " << name_);
+    // Assumption is that osl::Thread::create returns normally with a true
+    // return value iff it causes osl::Thread::run to start executing:
+    acquire();
+    comphelper::ScopeGuard g([this] { release(); });
+    if (!create()) {
+        throw std::runtime_error("osl::Thread::create failed");
+    }
+    g.dismiss();
+}
+
+salhelper::Thread::~Thread() {}
+
+void salhelper::Thread::run() {
+    // Work around the problem that onTerminated is not called if run throws an exception:
+    comphelper::ScopeGuard g([this] { onTerminated(); });
+    setName(name_);
+    execute();
+    g.dismiss();
+}
+
+void salhelper::Thread::onTerminated() { release(); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/salhelper/source/timer.cxx b/salhelper/source/timer.cxx
new file mode 100644
index 000000000..10f2e7138
--- /dev/null
+++ b/salhelper/source/timer.cxx
@@ -0,0 +1,364 @@
+/* -*- 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 <salhelper/timer.hxx>
+
+#include <osl/thread.hxx>
+#include <osl/conditn.hxx>
+
+#include <mutex>
+
+using namespace salhelper;
+
+class salhelper::TimerManager : public osl::Thread
+{
+public:
+    TimerManager();
+
+    /// register timer
+    void registerTimer(salhelper::Timer* pTimer);
+
+    /// unregister timer
+    void unregisterTimer(salhelper::Timer const * pTimer);
+
+    /// lookup timer
+    bool lookupTimer(const salhelper::Timer* pTimer);
+
+protected:
+    /// worker-function of thread
+    virtual void SAL_CALL run() override;
+
+    /// Checking and triggering of a timer event
+    void checkForTimeout();
+
+    /// sorted-queue data
+    salhelper::Timer*       m_pHead;
+    /// List Protection
+    std::mutex                  m_Lock;
+    /// Signal the insertion of a timer
+    osl::Condition              m_notEmpty;
+
+    /// "Singleton Pattern"
+    //static salhelper::TimerManager* m_pManager;
+
+};
+
+namespace
+{
+    salhelper::TimerManager& getTimerManager()
+    {
+        static salhelper::TimerManager aManager;
+        return aManager;
+    }
+}
+
+
+Timer::Timer()
+    : m_aTimeOut(0),
+      m_aExpired(0),
+      m_aRepeatDelta(0),
+      m_pNext(nullptr)
+{
+}
+
+Timer::Timer(const TTimeValue& rTime)
+    : m_aTimeOut(rTime),
+      m_aExpired(0),
+      m_aRepeatDelta(0),
+      m_pNext(nullptr)
+{
+}
+
+Timer::Timer(const TTimeValue& rTime, const TTimeValue& Repeat)
+    : m_aTimeOut(rTime),
+      m_aExpired(0),
+      m_aRepeatDelta(Repeat),
+      m_pNext(nullptr)
+{
+}
+
+Timer::~Timer()
+{
+    stop();
+}
+
+void Timer::start()
+{
+    if (!isTicking())
+    {
+        if (!m_aTimeOut.isEmpty())
+            setRemainingTime(m_aTimeOut);
+
+        getTimerManager().registerTimer(this);
+    }
+}
+
+void Timer::stop()
+{
+    getTimerManager().unregisterTimer(this);
+}
+
+sal_Bool Timer::isTicking() const
+{
+    return getTimerManager().lookupTimer(this);
+}
+
+sal_Bool Timer::isExpired() const
+{
+    TTimeValue Now;
+
+    osl_getSystemTime(&Now);
+
+    return !(Now < m_aExpired);
+}
+
+sal_Bool Timer::expiresBefore(const Timer* pTimer) const
+{
+    if (pTimer)
+        return m_aExpired < pTimer->m_aExpired;
+    else
+        return false;
+}
+
+void Timer::setAbsoluteTime(const TTimeValue& Time)
+{
+    m_aTimeOut = 0;
+    m_aExpired = Time;
+    m_aRepeatDelta = 0;
+
+    m_aExpired.normalize();
+}
+
+void Timer::setRemainingTime(const TTimeValue& Remaining)
+{
+    osl_getSystemTime(&m_aExpired);
+
+    m_aExpired.addTime(Remaining);
+}
+
+void Timer::setRemainingTime(const TTimeValue& Remaining, const TTimeValue& Repeat)
+{
+    osl_getSystemTime(&m_aExpired);
+
+    m_aExpired.addTime(Remaining);
+
+    m_aRepeatDelta = Repeat;
+}
+
+void Timer::addTime(const TTimeValue& Delta)
+{
+    m_aExpired.addTime(Delta);
+}
+
+TTimeValue Timer::getRemainingTime() const
+{
+    TTimeValue Now;
+
+    osl_getSystemTime(&Now);
+
+    sal_Int32 secs = m_aExpired.Seconds - Now.Seconds;
+
+    if (secs < 0)
+        return TTimeValue(0, 0);
+
+    sal_Int32 nsecs = m_aExpired.Nanosec - Now.Nanosec;
+
+    if (nsecs < 0)
+    {
+        if (secs > 0)
+        {
+            secs  -= 1;
+            nsecs += 1000000000;
+        }
+        else
+            return TTimeValue(0, 0);
+    }
+
+    return TTimeValue(secs, nsecs);
+}
+
+/** The timer manager cleanup has been removed (no thread is killed anymore),
+    so the thread leaks.
+
+    This will result in a GPF in case the salhelper-library gets unloaded before
+    process termination.
+
+    @TODO : rewrite this file, so that the timerManager thread gets destroyed,
+            when there are no timers anymore !
+**/
+
+TimerManager::TimerManager() :
+    m_pHead(nullptr)
+{
+    m_notEmpty.reset();
+
+    // start thread
+    create();
+}
+
+void TimerManager::registerTimer(Timer* pTimer)
+{
+    if (!pTimer)
+        return;
+
+    std::lock_guard Guard(m_Lock);
+
+    // try to find one with equal or lower remaining time.
+    Timer** ppIter = &m_pHead;
+
+    while (*ppIter)
+    {
+        if (pTimer->expiresBefore(*ppIter))
+        {
+            // next element has higher remaining time,
+            // => insert new timer before
+            break;
+        }
+        ppIter= &((*ppIter)->m_pNext);
+    }
+
+    // next element has higher remaining time,
+    // => insert new timer before
+    pTimer->m_pNext= *ppIter;
+    *ppIter = pTimer;
+
+
+    if (pTimer == m_pHead)
+    {
+        // it was inserted as new head
+        // signal it to TimerManager Thread
+        m_notEmpty.set();
+    }
+}
+
+void TimerManager::unregisterTimer(Timer const * pTimer)
+{
+    if (!pTimer)
+        return;
+
+    // lock access
+    std::lock_guard Guard(m_Lock);
+
+    Timer** ppIter = &m_pHead;
+
+    while (*ppIter)
+    {
+        if (pTimer == (*ppIter))
+        {
+            // remove timer from list
+            *ppIter = (*ppIter)->m_pNext;
+            return;
+        }
+        ppIter= &((*ppIter)->m_pNext);
+    }
+}
+
+bool TimerManager::lookupTimer(const Timer* pTimer)
+{
+    if (!pTimer)
+        return false;
+
+    // lock access
+    std::lock_guard Guard(m_Lock);
+
+    // check the list
+    for (Timer* pIter = m_pHead; pIter != nullptr; pIter= pIter->m_pNext)
+    {
+        if (pIter == pTimer)
+            return true;
+    }
+
+    return false;
+}
+
+void TimerManager::checkForTimeout()
+{
+    std::unique_lock aLock (m_Lock);
+
+    if (!m_pHead)
+    {
+        return;
+    }
+
+    Timer* pTimer = m_pHead;
+
+    if (!pTimer->isExpired())
+        return;
+
+    // remove expired timer
+    m_pHead = pTimer->m_pNext;
+
+    pTimer->acquire();
+
+    aLock.unlock();
+
+    pTimer->onShot();
+
+    // restart timer if specified
+    if (!pTimer->m_aRepeatDelta.isEmpty())
+    {
+        TTimeValue Now;
+
+        osl_getSystemTime(&Now);
+
+        Now.Seconds += pTimer->m_aRepeatDelta.Seconds;
+        Now.Nanosec += pTimer->m_aRepeatDelta.Nanosec;
+
+        pTimer->m_aExpired = Now;
+
+        registerTimer(pTimer);
+    }
+    pTimer->release();
+}
+
+void TimerManager::run()
+{
+    osl_setThreadName("salhelper::TimerManager");
+
+    setPriority( osl_Thread_PriorityBelowNormal );
+
+    while (schedule())
+    {
+        TTimeValue delay;
+        TTimeValue* pDelay=nullptr;
+
+        {
+            std::lock_guard a_Guard(m_Lock);
+
+            if (m_pHead != nullptr)
+            {
+                delay = m_pHead->getRemainingTime();
+                pDelay=&delay;
+            }
+            else
+            {
+                pDelay=nullptr;
+            }
+
+
+            m_notEmpty.reset();
+        }
+
+        m_notEmpty.wait(pDelay);
+
+        checkForTimeout();
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */