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C# IFile.Lock方法代码示例

本文整理汇总了C#中IFile.Lock方法的典型用法代码示例。如果您正苦于以下问题:C# IFile.Lock方法的具体用法?C# IFile.Lock怎么用?C# IFile.Lock使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在IFile的用法示例。


在下文中一共展示了IFile.Lock方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: Open

        public virtual void Open(IFile file, int pagePoolSize)
        {
            lock (this)
            {
                if (opened)
                {
                    throw new StorageError(StorageError.STORAGE_ALREADY_OPENED);
                }
                if (lockFile)
                {
                    if (!file.Lock())
                    {
                        throw new StorageError(StorageError.STORAGE_IS_USED);
                    }
                }
                Page pg;
                int i;
                int indexSize = initIndexSize;
                if (indexSize < dbFirstUserId)
                {
                    indexSize = dbFirstUserId;
                }
                indexSize = (indexSize + dbHandlesPerPage - 1) & ~ (dbHandlesPerPage - 1);

                dirtyPagesMap = new int[dbDirtyPageBitmapSize / 4 + 1];
                gcThreshold = Int64.MaxValue;
                backgroundGcMonitor = new object();
                backgroundGcStartMonitor = new object();
                gcThread = null;
                gcActive = false;
                gcDone = false;
                allocatedDelta = 0;

                nNestedTransactions = 0;
                nBlockedTransactions = 0;
                nCommittedTransactions = 0;
                scheduledCommitTime = Int64.MaxValue;
                transactionMonitor = new object();
                transactionLock = new PersistentResource();

                modified = false;

                objectCache = CreateObjectCache(cacheKind, pagePoolSize, objectCacheInitSize);

                //UPGRADE_TODO: Class 'java.util.HashMap' was converted to 'System.Collections.Hashtable' which has a different behavior.
                classDescMap = new Hashtable();
                descList = null;

                header = new Header();
                byte[] buf = new byte[Header.Sizeof];
                int rc = file.Read(0, buf);
                if (rc > 0 && rc < Header.Sizeof)
                {
                    throw new StorageError(StorageError.DATABASE_CORRUPTED);
                }

                header.Unpack(buf);
                if (header.curr < 0 || header.curr > 1)
                {
                    throw new StorageError(StorageError.DATABASE_CORRUPTED);
                }

                if (pool == null)
                {
                    pool = new PagePool(pagePoolSize / Page.pageSize);
                    pool.Open(file);
                }

                if (!header.initialized)
                {
                    header.curr = currIndex = 0;
                    long used = Page.pageSize;
                    header.root[0].index = used;
                    header.root[0].indexSize = indexSize;
                    header.root[0].indexUsed = dbFirstUserId;
                    header.root[0].freeList = 0;
                    used += indexSize * 8L;
                    header.root[1].index = used;
                    header.root[1].indexSize = indexSize;
                    header.root[1].indexUsed = dbFirstUserId;
                    header.root[1].freeList = 0;
                    used += indexSize * 8L;

                    header.root[0].shadowIndex = header.root[1].index;
                    header.root[1].shadowIndex = header.root[0].index;
                    header.root[0].shadowIndexSize = indexSize;
                    header.root[1].shadowIndexSize = indexSize;

                    int bitmapPages = (int) ((used + Page.pageSize * (dbAllocationQuantum * 8 - 1) - 1) / (Page.pageSize * (dbAllocationQuantum * 8 - 1)));
                    long bitmapSize = (long) bitmapPages * Page.pageSize;
                    int usedBitmapSize = (int) (SupportClass.URShift((used + bitmapSize), (dbAllocationQuantumBits + 3)));

                    for (i = 0; i < bitmapPages; i++)
                    {
                        pg = pool.PutPage(used + (long) i * Page.pageSize);
                        byte[] bitmap = pg.data;
                        int n = usedBitmapSize > Page.pageSize ? Page.pageSize : usedBitmapSize;
                        for (int j = 0; j < n; j++)
                        {
                            bitmap[j] = (byte) 0xFF;
//.........这里部分代码省略.........
开发者ID:kjk,项目名称:tenderbase,代码行数:101,代码来源:StorageImpl.cs


注:本文中的IFile.Lock方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。