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, 188 insertions, 0 deletions

diff --git a/store/source/storbios.hxx b/store/source/storbios.hxx
new file mode 100644
index 000000000..3cea84bb2
--- /dev/null
+++ b/store/source/storbios.hxx
@@ -0,0 +1,188 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+#include <osl/mutex.hxx>
+
+#include <store/types.h>
+#include "object.hxx"
+#include "storbase.hxx"
+
+namespace store
+{
+
+class ILockBytes;
+class PageCache;
+struct SuperBlockPage;
+
+class OStorePageBIOS : public store::OStoreObject
+{
+public:
+    /** Construction.
+     */
+    OStorePageBIOS();
+
+    /** Conversion into Mutex&
+     */
+    inline operator osl::Mutex& (void) const;
+
+    /** Initialization.
+     *  @param  pLockBytes [in]
+     *  @param  eAccessMode [in]
+     *  @param  rnPageSize [inout]
+     *  @return store_E_None upon success
+     */
+    virtual storeError initialize (
+        ILockBytes *    pLockBytes,
+        storeAccessMode eAccessMode,
+        sal_uInt16 &    rnPageSize);
+
+    rtl::Reference< PageData::Allocator > & allocator()
+    {
+        return m_xAllocator;
+    }
+
+    /** read.
+     */
+    storeError read (
+        sal_uInt32 nAddr, void *pData, sal_uInt32 nSize) const;
+
+    /** write.
+     */
+    storeError write (
+        sal_uInt32 nAddr, const void *pData, sal_uInt32 nSize) const;
+
+    /** isWriteable.
+     */
+    inline bool isWriteable() const;
+
+    /** isValid.
+     */
+    inline bool isValid() const;
+
+    /** Page Access.
+     */
+    storeError acquirePage (
+        const OStorePageDescriptor& rDescr, storeAccessMode eMode);
+
+    storeError releasePage (const OStorePageDescriptor& rDescr);
+
+    storeError allocate (OStorePageObject& rPage);
+
+    storeError free (sal_uInt32 nAddr);
+
+    /** Page I/O.
+     */
+    storeError loadObjectAt (
+        OStorePageObject& rPage, sal_uInt32 nAddr);
+
+    storeError saveObjectAt (
+        OStorePageObject& rPage, sal_uInt32 nAddr);
+
+    /** close.
+     *  @return store_E_None upon success.
+     */
+    storeError close();
+
+    /** flush.
+     *  @return store_E_None upon success.
+     */
+    storeError flush();
+
+protected:
+    /** Destruction (OReference).
+     */
+    virtual ~OStorePageBIOS() override;
+
+private:
+    /** Representation.
+     */
+    rtl::Reference<ILockBytes>    m_xLockBytes;
+    osl::Mutex                    m_aMutex;
+
+    std::unique_ptr<SuperBlockPage> m_pSuper;
+
+    bool                          m_bWriteable;
+
+    rtl::Reference< PageData::Allocator > m_xAllocator;
+    rtl::Reference< PageCache >   m_xCache;
+
+    /** Page Access (control).
+     */
+public:
+    struct Ace
+    {
+        Ace *      m_next;
+        Ace *      m_prev;
+
+        sal_uInt32 m_addr;
+        sal_uInt32 m_used;
+
+        Ace();
+        ~Ace();
+
+        static int SAL_CALL constructor (void * obj, void * arg);
+
+        static Ace * find   (Ace * head, sal_uInt32 addr);
+        static void  insert (Ace * head, Ace * entry);
+    };
+
+private:
+    Ace m_ace_head;
+
+    class AceCache;
+
+    /** Initialization.
+     */
+    storeError initialize_Impl (
+        ILockBytes *    pLockBytes,
+        storeAccessMode eAccessMode,
+        sal_uInt16 &    rnPageSize);
+    void cleanup_Impl();
+
+    /** Page Maintenance.
+     */
+    storeError loadObjectAt_Impl (
+        OStorePageObject & rPage, sal_uInt32 nAddr) const;
+    storeError saveObjectAt_Impl (
+        OStorePageObject & rPage, sal_uInt32 nAddr) const;
+
+    OStorePageBIOS (const OStorePageBIOS&) = delete;
+    OStorePageBIOS& operator= (const OStorePageBIOS&) = delete;
+};
+
+inline OStorePageBIOS::operator osl::Mutex& (void) const
+{
+    return const_cast<osl::Mutex&>(m_aMutex);
+}
+inline bool OStorePageBIOS::isWriteable() const
+{
+    return m_bWriteable;
+}
+inline bool OStorePageBIOS::isValid() const
+{
+    return m_xLockBytes.is();
+}
+
+} // namespace store
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */