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25 changes: 25 additions & 0 deletions
25
src/System.IO.MemoryMappedFiles/src/Microsoft/Win32/SafeMemoryMappedFileHandle.Unix.cs
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| @@ -0,0 +1,25 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
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| using System; | ||
| using System.Runtime.InteropServices; | ||
| using System.Security; | ||
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| namespace Microsoft.Win32.SafeHandles | ||
| { | ||
| public sealed partial class SafeMemoryMappedFileHandle : SafeHandle | ||
| { | ||
| private const int DefaultInvalidHandleValue = -1; // TODO: Implement this | ||
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| protected override bool ReleaseHandle() | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
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| public override bool IsInvalid | ||
| { | ||
| [SecurityCritical] | ||
| get { throw NotImplemented.ByDesign; } // TODO: Implement this | ||
| } | ||
| } | ||
| } |
28 changes: 28 additions & 0 deletions
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src/System.IO.MemoryMappedFiles/src/Microsoft/Win32/SafeMemoryMappedFileHandle.Windows.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
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| using System; | ||
| using System.Runtime.InteropServices; | ||
| using System.Security; | ||
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| namespace Microsoft.Win32.SafeHandles | ||
| { | ||
| public sealed partial class SafeMemoryMappedFileHandle : SafeHandle | ||
| { | ||
| private const int DefaultInvalidHandleValue = 0; | ||
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| protected override bool ReleaseHandle() | ||
| { | ||
| return Interop.mincore.CloseHandle(handle); | ||
| } | ||
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| public override bool IsInvalid | ||
| { | ||
| [SecurityCritical] | ||
| get | ||
| { | ||
| return handle == IntPtr.Zero || handle == new IntPtr(-1); | ||
| } | ||
| } | ||
| } | ||
| } |
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16 changes: 16 additions & 0 deletions
16
src/System.IO.MemoryMappedFiles/src/Microsoft/Win32/SafeMemoryMappedViewHandle.Unix.cs
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,16 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
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| using System; | ||
| using System.Runtime.InteropServices; | ||
|
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| namespace Microsoft.Win32.SafeHandles | ||
| { | ||
| public sealed partial class SafeMemoryMappedViewHandle | ||
| { | ||
| protected override bool ReleaseHandle() | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
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src/System.IO.MemoryMappedFiles/src/Microsoft/Win32/SafeMemoryMappedViewHandle.Windows.cs
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| @@ -0,0 +1,21 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
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| using System; | ||
| using System.Runtime.InteropServices; | ||
|
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| namespace Microsoft.Win32.SafeHandles | ||
| { | ||
| public sealed partial class SafeMemoryMappedViewHandle | ||
| { | ||
| protected override bool ReleaseHandle() | ||
| { | ||
| if (Interop.mincore.UnmapViewOfFile(handle) != 0) | ||
| { | ||
| handle = IntPtr.Zero; | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
| } | ||
| } |
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76 changes: 76 additions & 0 deletions
76
src/System.IO.MemoryMappedFiles/src/System/IO/MemoryMappedFiles/MemoryMappedFile.Unix.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
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| using Microsoft.Win32.SafeHandles; | ||
| using System.Security; | ||
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| namespace System.IO.MemoryMappedFiles | ||
| { | ||
| public partial class MemoryMappedFile | ||
| { | ||
| /// <summary> | ||
| /// Used by the 2 Create factory method groups. A -1 fileHandle specifies that the | ||
| /// memory mapped file should not be associated with an exsiting file on disk (ie start | ||
| /// out empty). | ||
| /// </summary> | ||
| [SecurityCritical] | ||
| private static SafeMemoryMappedFileHandle CreateCore( | ||
| SafeFileHandle fileHandle, String mapName, HandleInheritability inheritability, | ||
| MemoryMappedFileAccess access, MemoryMappedFileOptions options, Int64 capacity) | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
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| /// <summary> | ||
| /// Used by the OpenExisting factory method group and by CreateOrOpen if access is write. | ||
| /// We'll throw an ArgumentException if the file mapping object didn't exist and the | ||
| /// caller used CreateOrOpen since Create isn't valid with Write access | ||
| /// </summary> | ||
| [SecurityCritical] | ||
| private static SafeMemoryMappedFileHandle OpenCore( | ||
| String mapName, HandleInheritability inheritability, MemoryMappedFileAccess access, bool createOrOpen) | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
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| /// <summary> | ||
| /// Used by the OpenExisting factory method group and by CreateOrOpen if access is write. | ||
| /// We'll throw an ArgumentException if the file mapping object didn't exist and the | ||
| /// caller used CreateOrOpen since Create isn't valid with Write access | ||
| /// </summary> | ||
| [SecurityCritical] | ||
| private static SafeMemoryMappedFileHandle OpenCore( | ||
| String mapName, HandleInheritability inheritability, MemoryMappedFileRights rights, bool createOrOpen) | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
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| /// <summary> | ||
| /// Used by the CreateOrOpen factory method groups. A -1 fileHandle specifies that the | ||
| /// memory mapped file should not be associated with an existing file on disk (ie start | ||
| /// out empty). | ||
| /// | ||
| /// Try to open the file if it exists -- this requires a bit more work. Loop until we can | ||
| /// either create or open a memory mapped file up to a timeout. CreateFileMapping may fail | ||
| /// if the file exists and we have non-null security attributes, in which case we need to | ||
| /// use OpenFileMapping. But, there exists a race condition because the memory mapped file | ||
| /// may have closed inbetween the two calls -- hence the loop. | ||
| /// | ||
| /// This uses similar retry/timeout logic as in performance counter. It increases the wait | ||
| /// time each pass through the loop and times out in approximately 1.4 minutes. If after | ||
| /// retrying, a MMF handle still hasn't been opened, throw an InvalidOperationException. | ||
| /// </summary> | ||
| [SecurityCritical] | ||
| private static SafeMemoryMappedFileHandle CreateOrOpenCore( | ||
| SafeFileHandle fileHandle, String mapName, HandleInheritability inheritability, | ||
| MemoryMappedFileAccess access, MemoryMappedFileOptions options, Int64 capacity) | ||
| { | ||
| throw NotImplemented.ByDesign; // TODO: Implement this | ||
| } | ||
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| // ----------------------------- | ||
| // ---- PAL layer ends here ---- | ||
| // ----------------------------- | ||
|
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| } | ||
| } |
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