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Overview
| Comment: | Correct and enhance the alignment diagnostics added by check-in [0621d7037c]. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7ca42fb6c0f655a65e56391d939f8af7 |
| User & Date: | mistachkin 2018-01-15 18:18:20 |
Context
|
2018-01-15
| ||
| 19:22 | In SetTableError, avoid logging null virtual table error messages. check-in: 2de277f554 user: mistachkin tags: trunk | |
| 18:18 | Correct and enhance the alignment diagnostics added by check-in [0621d7037c]. check-in: 7ca42fb6c0 user: mistachkin tags: trunk | |
| 17:53 | Add comments with the offsets of various native structure members. check-in: 2e6de1738c user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLiteModule.cs.
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/// </param>
/// <returns>
/// The actual size, in bytes, of the memory block specified via the
/// native pointer.
/// </returns>
public static int Size(IntPtr pMemory)
{
#if !SQLITE_STANDARD
return UnsafeNativeMethods.sqlite3_malloc_size_interop(pMemory);
#elif TRACK_MEMORY_BYTES
//
// HACK: Ok, we cannot determine the size of the memory block;
// therefore, just track number of allocations instead.
//
................................................................................
/// </summary>
/// <param name="pMemory">
/// The native pointer to the memory block previously obtained from the
/// <see cref="Allocate" /> method.
/// </param>
public static void Free(IntPtr pMemory)
{
#if TRACK_MEMORY_BYTES
if (pMemory != IntPtr.Zero)
{
int blockSize = Size(pMemory);
if (blockSize > 0)
{
................................................................................
/// </summary>
/// <param name="pMemory">
/// The native pointer to the memory block previously obtained from the
/// SQLite core library.
/// </param>
public static void FreeUntracked(IntPtr pMemory)
{
UnsafeNativeMethods.sqlite3_free(pMemory);
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
................................................................................
/// </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
................................................................................
/// </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
................................................................................
/// </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(
................................................................................
/// </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
................................................................................
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
................................................................................
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
................................................................................
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),
................................................................................
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
///////////////////////////////////////////////////////////////////////
#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
|
> > > > > > > > > > > > > | | | | | | | > | > | | | > < > | < | | < < | > | < < | < < > | |
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/// </param>
/// <returns>
/// The actual size, in bytes, of the memory block specified via the
/// native pointer.
/// </returns>
public static int Size(IntPtr pMemory)
{
#if DEBUG
SQLiteMarshal.CheckAlignment("Size", pMemory, 0, IntPtr.Size);
#endif
#if !SQLITE_STANDARD
return UnsafeNativeMethods.sqlite3_malloc_size_interop(pMemory);
#elif TRACK_MEMORY_BYTES
//
// HACK: Ok, we cannot determine the size of the memory block;
// therefore, just track number of allocations instead.
//
................................................................................
/// </summary>
/// <param name="pMemory">
/// The native pointer to the memory block previously obtained from the
/// <see cref="Allocate" /> method.
/// </param>
public static void Free(IntPtr pMemory)
{
#if DEBUG
SQLiteMarshal.CheckAlignment("Free", pMemory, 0, IntPtr.Size);
#endif
#if TRACK_MEMORY_BYTES
if (pMemory != IntPtr.Zero)
{
int blockSize = Size(pMemory);
if (blockSize > 0)
{
................................................................................
/// </summary>
/// <param name="pMemory">
/// The native pointer to the memory block previously obtained from the
/// SQLite core library.
/// </param>
public static void FreeUntracked(IntPtr pMemory)
{
#if DEBUG
SQLiteMarshal.CheckAlignment(
"FreeUntracked", pMemory, 0, IntPtr.Size);
#endif
UnsafeNativeMethods.sqlite3_free(pMemory);
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
................................................................................
/// </returns>
public static int ReadInt32(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadInt32", pointer, offset, sizeof(int));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt32(pointer, offset);
#else
return Marshal.ReadInt32(IntPtrForOffset(pointer, offset));
#endif
................................................................................
/// </returns>
public static long ReadInt64(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadInt64", pointer, offset, sizeof(long));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt64(pointer, offset);
#else
return Marshal.ReadInt64(IntPtrForOffset(pointer, offset));
#endif
................................................................................
/// </returns>
public static double ReadDouble(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadDouble", pointer, offset, sizeof(double));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return BitConverter.Int64BitsToDouble(Marshal.ReadInt64(
pointer, offset));
#else
return BitConverter.ToDouble(BitConverter.GetBytes(
................................................................................
/// </returns>
public static IntPtr ReadIntPtr(
IntPtr pointer,
int offset
)
{
#if DEBUG
CheckAlignment("ReadIntPtr", pointer, offset, IntPtr.Size);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadIntPtr(pointer, offset);
#else
return Marshal.ReadIntPtr(IntPtrForOffset(pointer, offset));
#endif
................................................................................
public static void WriteInt32(
IntPtr pointer,
int offset,
int value
)
{
#if DEBUG
CheckAlignment("WriteInt32", pointer, offset, sizeof(int));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt32(pointer, offset, value);
#else
Marshal.WriteInt32(IntPtrForOffset(pointer, offset), value);
#endif
................................................................................
public static void WriteInt64(
IntPtr pointer,
int offset,
long value
)
{
#if DEBUG
CheckAlignment("WriteInt64", pointer, offset, sizeof(long));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset, value);
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset), value);
#endif
................................................................................
public static void WriteDouble(
IntPtr pointer,
int offset,
double value
)
{
#if DEBUG
CheckAlignment("WriteDouble", pointer, offset, sizeof(double));
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset,
BitConverter.DoubleToInt64Bits(value));
#else
Marshal.WriteInt64(IntPtrForOffset(pointer, offset),
................................................................................
public static void WriteIntPtr(
IntPtr pointer,
int offset,
IntPtr value
)
{
#if DEBUG
CheckAlignment(
"WriteIntPtr(pointer)", pointer, offset, IntPtr.Size);
CheckAlignment("WriteIntPtr(value)", value, 0, IntPtr.Size);
#endif
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
................................................................................
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
#if DEBUG
internal static void CheckAlignment(
string type,
IntPtr pointer,
int offset,
int size
)
{
IntPtr savedPointer = pointer;
if (offset != 0)
pointer = new IntPtr(pointer.ToInt64() + offset);
if ((pointer.ToInt64() % size) != 0)
{
SQLiteLog.LogMessage(SQLiteErrorCode.Warning,
HelperMethods.StringFormat(CultureInfo.CurrentCulture,
"{0}: pointer {1} and offset {2} not aligned to {3}: {4}",
type, savedPointer, offset, size, Environment.StackTrace));
}
}
#endif
#endregion
}
#endregion
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