Package org.apache.ignite.internal.pagemem

Interface PageSupport

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      long acquirePage​(int grpId, long pageId)
      Gets the page absolute pointer associated with the given page ID.
      long acquirePage​(int grpId, long pageId, IoStatisticsHolder statHolder)
      Gets the page absolute pointer associated with the given page ID.
      boolean isDirty​(int grpId, long pageId, long page)  
      long readLock​(int grpId, long pageId, long page)  
      long readLockForce​(int grpId, long pageId, long page)
      Obtains read lock without checking page tag.
      void readUnlock​(int grpId, long pageId, long page)
      Releases locked page.
      void releasePage​(int grpId, long pageId, long page)  
      long tryWriteLock​(int grpId, long pageId, long page)  
      long writeLock​(int grpId, long pageId, long page)  
      void writeUnlock​(int grpId, long pageId, long page, Boolean walPlc, boolean dirtyFlag)
      Releases locked page.

    • Method Detail

      • acquirePage

        long acquirePage​(int grpId,
                 long pageId)
          throws IgniteCheckedException
        Gets the page absolute pointer associated with the given page ID. Each page obtained with this method must be released by calling releasePage(int, long, long). This method will allocate page with given ID if it doesn't exist.
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        Returns:
        Page pointer.
        Throws:
        IgniteCheckedException - If failed.

      • acquirePage

        long acquirePage​(int grpId,
                 long pageId,
                 IoStatisticsHolder statHolder)
          throws IgniteCheckedException
        Gets the page absolute pointer associated with the given page ID. Each page obtained with this method must be released by calling releasePage(int, long, long). This method will allocate page with given ID if it doesn't exist.
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        statHolder - Statistics holder to track IO operations.
        Returns:
        Page pointer.
        Throws:
        IgniteCheckedException - If failed.

      • releasePage

        void releasePage​(int grpId,
                 long pageId,
                 long page)
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID to release.
        page - Page pointer.

      • readLock

        long readLock​(int grpId,
              long pageId,
              long page)
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        Returns:
        Pointer for reading the page.

      • readLockForce

        long readLockForce​(int grpId,
                   long pageId,
                   long page)
        Obtains read lock without checking page tag.
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        Returns:
        Pointer for reading the page.

      • readUnlock

        void readUnlock​(int grpId,
                long pageId,
                long page)
        Releases locked page.
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.

      • writeLock

        long writeLock​(int grpId,
               long pageId,
               long page)
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        Returns:
        Address of a buffer with contents of the given page or 0L if attempt to take the write lock failed.

      • tryWriteLock

        long tryWriteLock​(int grpId,
                  long pageId,
                  long page)
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        Returns:
        Address of a buffer with contents of the given page or 0L if attempt to take the write lock failed.

      • writeUnlock

        void writeUnlock​(int grpId,
                 long pageId,
                 long page,
                 Boolean walPlc,
                 boolean dirtyFlag)
        Releases locked page.
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        walPlc - True if page should be recorded to WAL, false if the page must not be recorded and null for the default behavior.
        dirtyFlag - Determines whether the page was modified since the last checkpoint.

      • isDirty

        boolean isDirty​(int grpId,
                long pageId,
                long page)
        Parameters:
        grpId - Cache group ID.
        pageId - Page ID.
        page - Page pointer.
        Returns:
        True if the page is dirty.