diff options
Diffstat (limited to 'src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs')
| -rw-r--r-- | src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs | 128 |
1 files changed, 96 insertions, 32 deletions
diff --git a/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs b/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs index 6fb631121b..03750bcb8b 100644 --- a/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs +++ b/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs @@ -15,13 +15,13 @@ namespace System.Runtime.InteropServices { using System; + using System.Runtime; using System.Collections.Generic; using System.Reflection; using System.Reflection.Emit; using System.Security; using System.Text; using System.Threading; - using System.Runtime.Remoting; using System.Runtime.CompilerServices; using System.Globalization; using System.Runtime.ConstrainedExecution; @@ -31,8 +31,8 @@ namespace System.Runtime.InteropServices using System.Diagnostics; using System.Diagnostics.Contracts; using System.Runtime.InteropServices.ComTypes; + using System.StubHelpers; - [Serializable] public enum CustomQueryInterfaceMode { Ignore = 0, @@ -406,9 +406,9 @@ namespace System.Runtime.InteropServices //==================================================================== // Read from memory //==================================================================== - public static byte ReadByte([MarshalAs(UnmanagedType.AsAny), In] Object ptr, int ofs) + public static byte ReadByte(Object ptr, int ofs) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + return ReadValueSlow(ptr, ofs, (IntPtr nativeHome, int offset) => Marshal.ReadByte(nativeHome, offset)); } public static unsafe byte ReadByte(IntPtr ptr, int ofs) @@ -430,9 +430,9 @@ namespace System.Runtime.InteropServices return ReadByte(ptr, 0); } - public static short ReadInt16([MarshalAs(UnmanagedType.AsAny), In] Object ptr, int ofs) + public static short ReadInt16(Object ptr, int ofs) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + return ReadValueSlow(ptr, ofs, (IntPtr nativeHome, int offset) => Marshal.ReadInt16(nativeHome, offset)); } public static unsafe short ReadInt16(IntPtr ptr, int ofs) @@ -467,9 +467,9 @@ namespace System.Runtime.InteropServices return ReadInt16(ptr, 0); } - public static int ReadInt32([MarshalAs(UnmanagedType.AsAny), In] Object ptr, int ofs) + public static int ReadInt32(object ptr, int ofs) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + return ReadValueSlow(ptr, ofs, (IntPtr nativeHome, int offset) => Marshal.ReadInt32(nativeHome, offset)); } public static unsafe int ReadInt32(IntPtr ptr, int ofs) @@ -506,7 +506,7 @@ namespace System.Runtime.InteropServices return ReadInt32(ptr, 0); } - public static IntPtr ReadIntPtr([MarshalAs(UnmanagedType.AsAny), In] Object ptr, int ofs) + public static IntPtr ReadIntPtr(Object ptr, int ofs) { #if BIT64 return (IntPtr)ReadInt64(ptr, ofs); @@ -535,7 +535,7 @@ namespace System.Runtime.InteropServices public static long ReadInt64([MarshalAs(UnmanagedType.AsAny), In] Object ptr, int ofs) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + return ReadValueSlow(ptr, ofs, (IntPtr nativeHome, int offset) => Marshal.ReadInt64(nativeHome, offset)); } public static unsafe long ReadInt64(IntPtr ptr, int ofs) @@ -576,6 +576,41 @@ namespace System.Runtime.InteropServices return ReadInt64(ptr, 0); } + //==================================================================== + // Read value from marshaled object (marshaled using AsAny) + // It's quite slow and can return back dangling pointers + // It's only there for backcompact + // I don't think we should spend time optimizing it + // People should really call the IntPtr overload instead + //==================================================================== + private static unsafe T ReadValueSlow<T>(object ptr, int ofs, Func<IntPtr, int, T> readValueHelper) + { + // We AV on desktop if passing NULL. So this is technically a breaking change but is an improvement + if (ptr == null) + throw new ArgumentNullException(nameof(ptr)); + + int dwFlags = + (int)AsAnyMarshaler.AsAnyFlags.In | + (int)AsAnyMarshaler.AsAnyFlags.IsAnsi | + (int)AsAnyMarshaler.AsAnyFlags.IsBestFit; + + MngdNativeArrayMarshaler.MarshalerState nativeArrayMarshalerState = new MngdNativeArrayMarshaler.MarshalerState(); + AsAnyMarshaler marshaler = new AsAnyMarshaler(new IntPtr(&nativeArrayMarshalerState)); + + IntPtr pNativeHome = IntPtr.Zero; + + try + { + pNativeHome = marshaler.ConvertToNative(ptr, dwFlags); + return readValueHelper(pNativeHome, ofs); + } + finally + { + marshaler.ClearNative(pNativeHome); + } + } + + //==================================================================== // Write to memory @@ -594,9 +629,9 @@ namespace System.Runtime.InteropServices } } - public static void WriteByte([MarshalAs(UnmanagedType.AsAny), In, Out] Object ptr, int ofs, byte val) + public static void WriteByte(Object ptr, int ofs, byte val) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + WriteValueSlow(ptr, ofs, val, (IntPtr nativeHome, int offset, byte value) => Marshal.WriteByte(nativeHome, offset, value)); } public static void WriteByte(IntPtr ptr, byte val) @@ -629,9 +664,9 @@ namespace System.Runtime.InteropServices } } - public static void WriteInt16([MarshalAs(UnmanagedType.AsAny), In, Out] Object ptr, int ofs, short val) + public static void WriteInt16(Object ptr, int ofs, short val) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + WriteValueSlow(ptr, ofs, val, (IntPtr nativeHome, int offset, short value) => Marshal.WriteInt16(nativeHome, offset, value)); } public static void WriteInt16(IntPtr ptr, short val) @@ -681,9 +716,9 @@ namespace System.Runtime.InteropServices } } - public static void WriteInt32([MarshalAs(UnmanagedType.AsAny), In, Out] Object ptr, int ofs, int val) + public static void WriteInt32(Object ptr, int ofs, int val) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + WriteValueSlow(ptr, ofs, val, (IntPtr nativeHome, int offset, int value) => Marshal.WriteInt32(nativeHome, offset, value)); } public static void WriteInt32(IntPtr ptr, int val) @@ -700,7 +735,7 @@ namespace System.Runtime.InteropServices #endif } - public static void WriteIntPtr([MarshalAs(UnmanagedType.AsAny), In, Out] Object ptr, int ofs, IntPtr val) + public static void WriteIntPtr(Object ptr, int ofs, IntPtr val) { #if BIT64 WriteInt64(ptr, ofs, (long)val); @@ -749,9 +784,9 @@ namespace System.Runtime.InteropServices } } - public static void WriteInt64([MarshalAs(UnmanagedType.AsAny), In, Out] Object ptr, int ofs, long val) + public static void WriteInt64(Object ptr, int ofs, long val) { - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10442 + WriteValueSlow(ptr, ofs, val, (IntPtr nativeHome, int offset, long value) => Marshal.WriteInt64(nativeHome, offset, value)); } public static void WriteInt64(IntPtr ptr, long val) @@ -759,6 +794,41 @@ namespace System.Runtime.InteropServices WriteInt64(ptr, 0, val); } + //==================================================================== + // Write value into marshaled object (marshaled using AsAny) and + // propagate the value back + // It's quite slow and is only there for backcompact + // I don't think we should spend time optimizing it + // People should really call the IntPtr overload instead + //==================================================================== + private static unsafe void WriteValueSlow<T>(object ptr, int ofs, T val, Action<IntPtr, int, T> writeValueHelper) + { + // We AV on desktop if passing NULL. So this is technically a breaking change but is an improvement + if (ptr == null) + throw new ArgumentNullException(nameof(ptr)); + + int dwFlags = + (int)AsAnyMarshaler.AsAnyFlags.In | + (int)AsAnyMarshaler.AsAnyFlags.Out | + (int)AsAnyMarshaler.AsAnyFlags.IsAnsi | + (int)AsAnyMarshaler.AsAnyFlags.IsBestFit; + + MngdNativeArrayMarshaler.MarshalerState nativeArrayMarshalerState = new MngdNativeArrayMarshaler.MarshalerState(); + AsAnyMarshaler marshaler = new AsAnyMarshaler(new IntPtr(&nativeArrayMarshalerState)); + + IntPtr pNativeHome = IntPtr.Zero; + + try + { + pNativeHome = marshaler.ConvertToNative(ptr, dwFlags); + writeValueHelper(pNativeHome, ofs, val); + marshaler.ConvertToManaged(ptr, pNativeHome); + } + finally + { + marshaler.ClearNative(pNativeHome); + } + } //==================================================================== // GetLastWin32Error @@ -1772,11 +1842,7 @@ namespace System.Runtime.InteropServices } Contract.EndContractBlock(); -#if FEATURE_COMINTEROP return s.MarshalToBSTR(); -#else - throw new PlatformNotSupportedException(); // https://github.com/dotnet/coreclr/issues/10443 -#endif } public static IntPtr SecureStringToCoTaskMemAnsi(SecureString s) @@ -1800,30 +1866,28 @@ namespace System.Runtime.InteropServices return s.MarshalToString(globalAlloc: false, unicode: true); } - -#if FEATURE_COMINTEROP + public static void ZeroFreeBSTR(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)(Win32Native.SysStringLen(s) * 2)); + RuntimeImports.RhZeroMemory(s, (UIntPtr)(Win32Native.SysStringLen(s) * 2)); FreeBSTR(s); } -#endif public static void ZeroFreeCoTaskMemAnsi(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)(Win32Native.lstrlenA(s))); + RuntimeImports.RhZeroMemory(s, (UIntPtr)(Win32Native.lstrlenA(s))); FreeCoTaskMem(s); } public static void ZeroFreeCoTaskMemUnicode(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)(Win32Native.lstrlenW(s) * 2)); + RuntimeImports.RhZeroMemory(s, (UIntPtr)(Win32Native.lstrlenW(s) * 2)); FreeCoTaskMem(s); } unsafe public static void ZeroFreeCoTaskMemUTF8(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)System.StubHelpers.StubHelpers.strlen((sbyte*)s)); + RuntimeImports.RhZeroMemory(s, (UIntPtr)System.StubHelpers.StubHelpers.strlen((sbyte*)s)); FreeCoTaskMem(s); } @@ -1851,13 +1915,13 @@ namespace System.Runtime.InteropServices public static void ZeroFreeGlobalAllocAnsi(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)(Win32Native.lstrlenA(s))); + RuntimeImports.RhZeroMemory(s, (UIntPtr)(Win32Native.lstrlenA(s))); FreeHGlobal(s); } public static void ZeroFreeGlobalAllocUnicode(IntPtr s) { - Win32Native.ZeroMemory(s, (UIntPtr)(Win32Native.lstrlenW(s) * 2)); + RuntimeImports.RhZeroMemory(s, (UIntPtr)(Win32Native.lstrlenW(s) * 2)); FreeHGlobal(s); } } |