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cairo: Clean up dispose implementations

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This commit is contained in:
Michael Hutchinson 2013-03-05 15:11:46 -05:00 committed by Bertrand Lorentz
parent 99e4257a9f
commit 116d9fcc95
6 changed files with 60 additions and 35 deletions
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15
cairo/FontFace.cs
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@ -50,24 +50,27 @@ namespace Cairo
~FontFace ()
{
// Since Cairo is not thread safe, we can not unref the
// font_face here, the programmer must do this with Dispose
Console.Error.WriteLine ("Programmer forgot to call Dispose on the FontFace");
Dispose (false);
}
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (disposing)
if (handle == IntPtr.Zero)
return;
if (!disposing) {
Console.Error.WriteLine ("Cairo.FontFace: called from finalization thread, programmer is missing a call to Dispose");
return;
}
NativeMethods.cairo_font_face_destroy (handle);
handle = IntPtr.Zero;
GC.SuppressFinalize (this);
}
// TODO: make non-public when all entry points are complete in binding

19
cairo/FontOptions.cs
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@ -33,7 +33,6 @@ namespace Cairo
public class FontOptions : IDisposable
{
IntPtr handle;
bool disposed;
public FontOptions ()
{
@ -55,9 +54,10 @@ namespace Cairo
return new FontOptions (NativeMethods.cairo_font_options_copy (handle));
}
[Obsolete ("Use Dispose()")]
public void Destroy ()
{
NativeMethods.cairo_font_options_destroy (handle);
Dispose ();
}
public void Dispose ()
@ -66,13 +66,18 @@ namespace Cairo
GC.SuppressFinalize (this);
}
private void Dispose (bool disposing)
protected virtual void Dispose (bool disposing)
{
if (!disposed) {
Destroy ();
handle = IntPtr.Zero;
if (handle == IntPtr.Zero)
return;
if (!disposing) {
Console.Error.WriteLine ("Cairo.FontOptions: called from finalization thread, programmer is missing a call to Dispose");
return;
}
disposed = true;
NativeMethods.cairo_font_options_destroy (handle);
handle = IntPtr.Zero;
}
public static bool operator == (FontOptions options, FontOptions other)

2
cairo/Path.cs
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@ -57,7 +57,7 @@ namespace Cairo {
protected virtual void Dispose (bool disposing)
{
if (!disposing){
if (!disposing) {
Console.Error.WriteLine ("Cairo.Path: called from finalization thread, programmer is missing a call to Dispose");
return;
}

21
cairo/Pattern.cs
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@ -76,6 +76,7 @@ namespace Cairo {
~Pattern ()
{
Dispose (false);
}
[Obsolete ("Use the SurfacePattern constructor")]
@ -92,26 +93,32 @@ namespace Cairo {
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (disposing)
Destroy ();
GC.SuppressFinalize (this);
if (!disposing) {
Console.Error.WriteLine ("Cairo.Pattern: called from finalization thread, programmer is missing a call to Dispose");
return;
}
public void Destroy ()
{
if (pattern != IntPtr.Zero){
if (pattern == IntPtr.Zero)
return;
NativeMethods.cairo_pattern_destroy (pattern);
pattern = IntPtr.Zero;
}
lock (patterns){
patterns.Remove (this);
}
}
[Obsolete ("Use Dispose()")]
public void Destroy ()
{
Dispose ();
}
public Extend Extend {
get { return NativeMethods.cairo_pattern_get_extend (pattern); }
set { NativeMethods.cairo_pattern_set_extend (pattern, value); }

10
cairo/ScaledFont.cs
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@ -99,11 +99,17 @@ namespace Cairo {
protected virtual void Dispose (bool disposing)
{
if (disposing) {
if (handle == IntPtr.Zero)
return;
if (!disposing) {
Console.Error.WriteLine ("Cairo.ScaledFont: called from finalization thread, programmer is missing a call to Dispose");
return;
}
NativeMethods.cairo_scaled_font_destroy (handle);
handle = IntPtr.Zero;
}
}
protected void Reference ()
{

4
cairo/Surface.cs
View File

@ -149,6 +149,10 @@ namespace Cairo {
{
if (surface == IntPtr.Zero)
return;
if (!disposing) {
Console.Error.WriteLine ("Cairo.Surface: called from finalization thread, programmer is missing a call to Dispose");
return;
}
lock (surfaces.SyncRoot)
surfaces.Remove (surface);