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Overview
| Comment: | Add some pointer/offset alignment checking to the managed virtual table subsystem. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
0621d7037c76f5f4fb6a656a285b8c2b |
| User & Date: | mistachkin 2018-01-12 19:37:16 |
References
|
2018-01-15
| ||
| 18:18 | Correct and enhance the alignment diagnostics added by check-in [0621d7037c]. check-in: 7ca42fb6c0 user: mistachkin tags: trunk | |
Context
|
2018-01-15
| ||
| 17:20 | Fix compilation of the design-time components project using the latest Visual Studio 2017 update. check-in: ad7af0b258 user: mistachkin tags: trunk | |
|
2018-01-12
| ||
| 19:37 | Add some pointer/offset alignment checking to the managed virtual table subsystem. check-in: 0621d7037c user: mistachkin tags: trunk | |
|
2018-01-11
| ||
| 20:44 | Update SQLite core library to the latest trunk code. check-in: 356e9a22b6 user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLiteModule.cs.
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/// The <see cref="Int32" /> value at the specified memory location.
/// </returns>
public static int ReadInt32(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt32(pointer, offset);
#else
return Marshal.ReadInt32(IntPtrForOffset(pointer, offset));
#endif
}
................................................................................
/// The <see cref="Int64" /> value at the specified memory location.
/// </returns>
public static long ReadInt64(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt64(pointer, offset);
#else
return Marshal.ReadInt64(IntPtrForOffset(pointer, offset));
#endif
}
................................................................................
/// The <see cref="Double" /> value at the specified memory location.
/// </returns>
public static double ReadDouble(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return BitConverter.Int64BitsToDouble(Marshal.ReadInt64(
pointer, offset));
#else
return BitConverter.ToDouble(BitConverter.GetBytes(
Marshal.ReadInt64(IntPtrForOffset(pointer, offset))), 0);
#endif
................................................................................
/// The <see cref="IntPtr" /> value at the specified memory location.
/// </returns>
public static IntPtr ReadIntPtr(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadIntPtr(pointer, offset);
#else
return Marshal.ReadIntPtr(IntPtrForOffset(pointer, offset));
#endif
}
#endregion
................................................................................
/// </param>
public static void WriteInt32(
IntPtr pointer,
int offset,
int value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt32(pointer, offset, value);
#else
Marshal.WriteInt32(IntPtrForOffset(pointer, offset), value);
#endif
}
................................................................................
/// </param>
public static void WriteInt64(
IntPtr pointer,
int offset,
long value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset, value);
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset), value);
#endif
}
................................................................................
/// </param>
public static void WriteDouble(
IntPtr pointer,
int offset,
double value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset,
BitConverter.DoubleToInt64Bits(value));
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset),
BitConverter.ToInt64(BitConverter.GetBytes(value), 0));
#endif
................................................................................
/// </param>
public static void WriteIntPtr(
IntPtr pointer,
int offset,
IntPtr value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
}
#endregion
................................................................................
return RuntimeHelpers.GetHashCode(value);
#endif
if (value == null) return 0;
return value.GetHashCode();
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteModule Base Class
/// <summary>
|
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/// The <see cref="Int32" /> value at the specified memory location.
/// </returns>
public static int ReadInt32(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadInt32", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt32(pointer, offset);
#else
return Marshal.ReadInt32(IntPtrForOffset(pointer, offset));
#endif
}
................................................................................
/// The <see cref="Int64" /> value at the specified memory location.
/// </returns>
public static long ReadInt64(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadInt64", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt64(pointer, offset);
#else
return Marshal.ReadInt64(IntPtrForOffset(pointer, offset));
#endif
}
................................................................................
/// The <see cref="Double" /> value at the specified memory location.
/// </returns>
public static double ReadDouble(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadDouble", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return BitConverter.Int64BitsToDouble(Marshal.ReadInt64(
pointer, offset));
#else
return BitConverter.ToDouble(BitConverter.GetBytes(
Marshal.ReadInt64(IntPtrForOffset(pointer, offset))), 0);
#endif
................................................................................
/// The <see cref="IntPtr" /> value at the specified memory location.
/// </returns>
public static IntPtr ReadIntPtr(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadIntPtr", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadIntPtr(pointer, offset);
#else
return Marshal.ReadIntPtr(IntPtrForOffset(pointer, offset));
#endif
}
#endregion
................................................................................
/// </param>
public static void WriteInt32(
IntPtr pointer,
int offset,
int value
)
{
#if DEBUG
CheckAlignment("WriteInt32", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt32(pointer, offset, value);
#else
Marshal.WriteInt32(IntPtrForOffset(pointer, offset), value);
#endif
}
................................................................................
/// </param>
public static void WriteInt64(
IntPtr pointer,
int offset,
long value
)
{
#if DEBUG
CheckAlignment("WriteInt64", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset, value);
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset), value);
#endif
}
................................................................................
/// </param>
public static void WriteDouble(
IntPtr pointer,
int offset,
double value
)
{
#if DEBUG
CheckAlignment("WriteDouble", pointer, offset);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset,
BitConverter.DoubleToInt64Bits(value));
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset),
BitConverter.ToInt64(BitConverter.GetBytes(value), 0));
#endif
................................................................................
/// </param>
public static void WriteIntPtr(
IntPtr pointer,
int offset,
IntPtr value
)
{
#if DEBUG
CheckAlignment("WriteIntPtr(pointer)", pointer, offset);
CheckAlignment("WriteIntPtr(value)", value, 0);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
}
#endregion
................................................................................
return RuntimeHelpers.GetHashCode(value);
#endif
if (value == null) return 0;
return value.GetHashCode();
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
#if DEBUG
private static void CheckAlignment(
string type,
IntPtr pointer,
int offset
)
{
if ((pointer.ToInt64() % IntPtr.Size) != 0)
{
SQLiteLog.LogMessage(SQLiteErrorCode.Warning,
HelperMethods.StringFormat(
CultureInfo.CurrentCulture,
"{0}: pointer {1} is not aligned to {2}: {3}",
type, pointer, IntPtr.Size, Environment.StackTrace));
}
if ((offset % IntPtr.Size) != 0)
{
SQLiteLog.LogMessage(SQLiteErrorCode.Warning,
HelperMethods.StringFormat(
CultureInfo.CurrentCulture,
"{0}: offset {1} is not aligned to {2}: {3}",
type, offset, IntPtr.Size, Environment.StackTrace));
}
}
#endif
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteModule Base Class
/// <summary>
|