#region IGraphicsContextInternal Members
- private const string Library = "libdl.dylib";
-
- [DllImport(Library, EntryPoint = "NSIsSymbolNameDefined")]
- private static extern bool NSIsSymbolNameDefined(string s);
- [DllImport(Library, EntryPoint = "NSIsSymbolNameDefined")]
- private static extern bool NSIsSymbolNameDefined(IntPtr s);
- [DllImport(Library, EntryPoint = "NSLookupAndBindSymbol")]
- private static extern IntPtr NSLookupAndBindSymbol(string s);
- [DllImport(Library, EntryPoint = "NSLookupAndBindSymbol")]
- private static extern IntPtr NSLookupAndBindSymbol(IntPtr s);
- [DllImport(Library, EntryPoint = "NSAddressOfSymbol")]
- private static extern IntPtr NSAddressOfSymbol(IntPtr symbol);
-
public override IntPtr GetAddress(string function)
{
- // Instead of allocating and combining strings in managed memory
- // we do that directly in unmanaged memory. This way, we avoid
- // 2 string allocations every time this function is called.
-
- // must add a '_' prefix and null-terminate the function name,
- // hence we allocate +2 bytes
- IntPtr ptr = Marshal.AllocHGlobal(function.Length + 2);
- try
- {
- Marshal.WriteByte(ptr, (byte)'_');
- for (int i = 0; i < function.Length; i++)
- {
- Marshal.WriteByte(ptr, i + 1, (byte)function[i]);
- }
- Marshal.WriteByte(ptr, function.Length + 1, 0); // null-terminate
-
- IntPtr symbol = IntPtr.Zero;
- if (NSIsSymbolNameDefined(ptr))
- {
- symbol = NSLookupAndBindSymbol(ptr);
- if (symbol != IntPtr.Zero)
- symbol = NSAddressOfSymbol(symbol);
- }
- return symbol;
- }
- finally
- {
- Marshal.FreeHGlobal(ptr);
- }
+ return NS.GetAddress(function);
}
public override IntPtr GetAddress(IntPtr function)
{
- if (!NSIsSymbolNameDefined(function))
- return IntPtr.Zero;
-
- IntPtr symbol = NSLookupAndBindSymbol(function);
- if (symbol != IntPtr.Zero)
- symbol = NSAddressOfSymbol(symbol);
-
- return symbol;
+ return NS.GetAddress(function);
}
-
+
#endregion
}
}
--- /dev/null
+#region License
+//
+// NS.cs
+//
+// Author:
+// Stefanos A. <stapostol@gmail.com>
+//
+// Copyright (c) 2006-2013 Stefanos Apostolopoulos
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#endregion
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Platform.MacOS
+{
+
+ internal class NS
+ {
+ const string Library = "libdl.dylib";
+
+ [DllImport(Library, EntryPoint = "NSIsSymbolNameDefined")]
+ static extern bool NSIsSymbolNameDefined(string s);
+ [DllImport(Library, EntryPoint = "NSIsSymbolNameDefined")]
+ static extern bool NSIsSymbolNameDefined(IntPtr s);
+ [DllImport(Library, EntryPoint = "NSLookupAndBindSymbol")]
+ static extern IntPtr NSLookupAndBindSymbol(string s);
+ [DllImport(Library, EntryPoint = "NSLookupAndBindSymbol")]
+ static extern IntPtr NSLookupAndBindSymbol(IntPtr s);
+ [DllImport(Library, EntryPoint = "NSAddressOfSymbol")]
+ static extern IntPtr NSAddressOfSymbol(IntPtr symbol);
+
+ public static IntPtr GetAddress(string function)
+ {
+ // Instead of allocating and combining strings in managed memory
+ // we do that directly in unmanaged memory. This way, we avoid
+ // 2 string allocations every time this function is called.
+
+ // must add a '_' prefix and null-terminate the function name,
+ // hence we allocate +2 bytes
+ IntPtr ptr = Marshal.AllocHGlobal(function.Length + 2);
+ try
+ {
+ Marshal.WriteByte(ptr, (byte)'_');
+ for (int i = 0; i < function.Length; i++)
+ {
+ Marshal.WriteByte(ptr, i + 1, (byte)function[i]);
+ }
+ Marshal.WriteByte(ptr, function.Length + 1, 0); // null-terminate
+
+ IntPtr symbol = GetAddress(ptr);
+ return symbol;
+ }
+ finally
+ {
+ Marshal.FreeHGlobal(ptr);
+ }
+ }
+
+ public static IntPtr GetAddress(IntPtr function)
+ {
+ IntPtr symbol = IntPtr.Zero;
+ if (NSIsSymbolNameDefined(function))
+ {
+ symbol = NSLookupAndBindSymbol(function);
+ if (symbol != IntPtr.Zero)
+ symbol = NSAddressOfSymbol(symbol);
+ }
+ return symbol;
+ }
+ }
+}
+