System.Data.SQLite

Check-in [f09f0e8ea1]
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Overview
Comment:Further optimization/fix for ticket [201128cc88].
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SHA1: f09f0e8ea14d399a2bea6c9da52a72cca5bd1ccf
User & Date: mistachkin 2011-07-07 02:40:04.740
References
2011-07-07
04:30 • Ticket [201128cc88] SQLite3.GetParamValueBytes optimization status still Closed with 2 other changes artifact: b6073f8c6c user: mistachkin
02:41 • Closed ticket [201128cc88]. artifact: b2698d9f7d user: mistachkin
Context
2011-07-07
04:18
Add proper test case for [201128cc88] that covers most branches of the modified method. Also, tweak common test infrastructure. check-in: a290d2c1a5 user: mistachkin tags: trunk
02:40
Further optimization/fix for ticket [201128cc88]. check-in: f09f0e8ea1 user: mistachkin tags: trunk
02:15
Fix for ticket [e1b2e0f769] with test case. check-in: fa8d4d5773 user: mistachkin tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Changes to System.Data.SQLite/SQLite3.cs.
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    internal override long GetParamValueBytes(IntPtr p, int nDataOffset, byte[] bDest, int nStart, int nLength)
    {
      int nlen = UnsafeNativeMethods.sqlite3_value_bytes(p);

      if (bDest == null) return nlen;

      IntPtr ptr = UnsafeNativeMethods.sqlite3_value_blob(p);
      int nCopied = nLength;

      if (nCopied + nStart > bDest.Length) nCopied = bDest.Length - nStart;
      if (nCopied + nDataOffset > nlen) nCopied = nlen - nDataOffset;

      if (nCopied > 0)



        Marshal.Copy((IntPtr)(ptr.ToInt32() + nDataOffset), bDest, nStart, nCopied);

      else nCopied = 0;

      return nCopied;
    }

    internal override double GetParamValueDouble(IntPtr ptr)
    {








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    internal override long GetParamValueBytes(IntPtr p, int nDataOffset, byte[] bDest, int nStart, int nLength)
    {
      int nlen = UnsafeNativeMethods.sqlite3_value_bytes(p);

      if (bDest == null) return nlen;


      int nCopied = nLength;

      if (nCopied + nStart > bDest.Length) nCopied = bDest.Length - nStart;
      if (nCopied + nDataOffset > nlen) nCopied = nlen - nDataOffset;

      if (nCopied > 0)
      {
        IntPtr ptr = UnsafeNativeMethods.sqlite3_value_blob(p);

        Marshal.Copy((IntPtr)(ptr.ToInt64() + nDataOffset), bDest, nStart, nCopied);
      }
      else nCopied = 0;

      return nCopied;
    }

    internal override double GetParamValueDouble(IntPtr ptr)
    {
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