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Viewing changes to external/maccore/src/CoreFoundation/CFAllocator.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/maccore/src/CoreFoundation/CFAllocator.cs
 
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// 
 
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// CFAllocator.cs
 
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//
 
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// Authors:
 
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//    Rolf Bjarne Kvinge
 
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//    Marek Safar (marek.safar@gmail.com)
 
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//     
 
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// Copyright 2012 Xamarin Inc
 
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//
 
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// Permission is hereby granted, free of charge, to any person obtaining
 
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// a copy of this software and associated documentation files (the
 
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// "Software"), to deal in the Software without restriction, including
 
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// without limitation the rights to use, copy, modify, merge, publish,
 
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// distribute, sublicense, and/or sell copies of the Software, and to
 
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// permit persons to whom the Software is furnished to do so, subject to
 
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// the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be
 
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// included in all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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//
 
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using System;
 
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using System.Runtime.InteropServices;
 
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using MonoMac.Foundation;
 
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using MonoMac.ObjCRuntime;
 
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namespace MonoMac.CoreFoundation {      
 
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        public class CFAllocator : INativeObject, IDisposable 
 
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        {
 
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                static CFAllocator Default_cf;
 
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                static CFAllocator SystemDefault_cf;
 
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                static CFAllocator Malloc_cf;
 
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                static CFAllocator MallocZone_cf;
 
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                static CFAllocator Null_cf;
 
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                static readonly IntPtr default_ptr;
 
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                static readonly IntPtr system_default_ptr;
 
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                static readonly IntPtr malloc_ptr;
 
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                static readonly IntPtr malloc_zone_ptr;
 
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                internal static readonly IntPtr null_ptr;
 
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                //static readonly IntPtr UseContextFlag;
 
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                IntPtr handle;
 
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                static CFAllocator ()
 
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                {
 
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                        var handle = Dlfcn.dlopen (Constants.CoreFoundationLibrary, 0);
 
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                        try {
 
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                                default_ptr = Dlfcn.GetIntPtr (handle, "kCFAllocatorDefault");
 
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                                system_default_ptr = Dlfcn.GetIntPtr (handle, "kCFAllocatorSystemDefault");
 
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                                malloc_ptr = Dlfcn.GetIntPtr (handle, "kCFAllocatorMalloc");
 
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                                malloc_zone_ptr = Dlfcn.GetIntPtr (handle, "kCFAllocatorMallocZone");
 
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                                null_ptr = Dlfcn.GetIntPtr (handle, "kCFAllocatorNull");
 
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                        //      UseContextFlag = Dlfcn.GetIntPtr (handle, "kCFAllocatorUseContext");
 
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                        } finally {
 
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                                Dlfcn.dlclose (handle);
 
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                        }
 
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                }
 
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                public CFAllocator (IntPtr handle)
 
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                {
 
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                        this.handle = handle;
 
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                }
 
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                public CFAllocator (IntPtr handle, bool owns)
 
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                {
 
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                        if (!owns)
 
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                                CFObject.CFRetain (handle);
 
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                        this.handle = handle;
 
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                }
 
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                ~CFAllocator ()
 
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                {
 
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                        Dispose (false);
 
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                }
 
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                public void Dispose ()
 
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                {
 
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                        Dispose (true);
 
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                        GC.SuppressFinalize (this);
 
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                }
 
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                public IntPtr Handle {
 
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                        get { return handle; }
 
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                }
 
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                protected virtual void Dispose (bool disposing)
 
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                {
 
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                        if (handle != IntPtr.Zero){
 
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                                CFObject.CFRelease (handle);
 
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                                handle = IntPtr.Zero;
 
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                        }
 
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                }
 
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                public static CFAllocator Default {
 
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                        get {
 
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                                return Default_cf ?? (Default_cf = new CFAllocator (default_ptr)); 
 
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                        }
 
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                }
 
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                public static CFAllocator SystemDefault {
 
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                        get {
 
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                                return SystemDefault_cf ?? (SystemDefault_cf = new CFAllocator (system_default_ptr)); 
 
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                        }
 
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                }
 
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                public static CFAllocator Malloc {
 
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                        get {
 
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                                return Malloc_cf ?? (Malloc_cf = new CFAllocator (malloc_ptr)); 
 
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                        }
 
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                }
 
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                public static CFAllocator MallocZone {
 
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                        get {
 
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                                return MallocZone_cf ?? (MallocZone_cf = new CFAllocator (malloc_zone_ptr)); 
 
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                        }
 
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                }
 
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                public static CFAllocator Null {
 
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                        get {
 
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                                return Null_cf ?? (Null_cf = new CFAllocator (null_ptr)); 
 
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                        }
 
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                }
 
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                [DllImport (Constants.CoreFoundationLibrary)]
 
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                static extern IntPtr CFAllocatorAllocate (IntPtr allocator, /*CFIndex*/ long size, CFAllocatorFlags hint);
 
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                public IntPtr Allocate (long size, CFAllocatorFlags hint = 0)
 
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                {
 
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                        return CFAllocatorAllocate (handle, size, hint);
 
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                }
 
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                [DllImport (Constants.CoreFoundationLibrary)]
 
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                static extern void CFAllocatorDeallocate(IntPtr allocator, IntPtr ptr);
 
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                public void Deallocate (IntPtr ptr)
 
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                {
 
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                        CFAllocatorDeallocate (handle, ptr);
 
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                }
 
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                // TODO: Implement more methods
 
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        }
 
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        // Seems to be some sort of secret values
 
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        [Flags]
 
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        public enum CFAllocatorFlags : ulong
 
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        {
 
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                GCScannedMemory = 0x200,
 
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                GCObjectMemory  = 0x400,
 
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        }
 
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}
 
 
b'\\ No newline at end of file'