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Fix early garbage collection for alternative char * typemaps

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@7275 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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William S Fulton 2005-06-10 23:29:58 +00:00
commit 3f71da7050
1 changed files with 8 additions and 8 deletions
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16
SWIG/Lib/csharp/csharp.swg
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@ -653,22 +653,22 @@ using System.Runtime.InteropServices;
/* /*
// Alternative char * typemaps. // Alternative char * typemaps.
// Warning the GC may collect the SWIGStringMarshal instance while the unmanaged code is executing, so these typemaps should be avoided.
%pragma(csharp) imclasscode=%{ %pragma(csharp) imclasscode=%{
public class SWIGStringMarshal { public class SWIGStringMarshal : IDisposable {
public readonly IntPtr ptr; public readonly HandleRef swigCPtr;
public SWIGStringMarshal(string str) { public SWIGStringMarshal(string str) {
ptr = System.Runtime.InteropServices.Marshal.StringToHGlobalAnsi(str); swigCPtr = new HandleRef(this, System.Runtime.InteropServices.Marshal.StringToHGlobalAnsi(str));
} }
~SWIGStringMarshal() { public virtual void Dispose() {
System.Runtime.InteropServices.Marshal.FreeHGlobal(ptr); System.Runtime.InteropServices.Marshal.FreeHGlobal(swigCPtr.Handle);
GC.SuppressFinalize(this);
} }
} }
%} %}
%typemap(imtype) char *, char[ANY], char[] "IntPtr" %typemap(imtype, out="IntPtr") char *, char[ANY], char[] "HandleRef"
%typemap(out) char *, char[ANY], char[] %{ $result = $1; %} %typemap(out) char *, char[ANY], char[] %{ $result = $1; %}
%typemap(csin) char *, char[ANY], char[] "new $modulePINVOKE.SWIGStringMarshal($csinput).ptr" %typemap(csin) char *, char[ANY], char[] "new $modulePINVOKE.SWIGStringMarshal($csinput).swigCPtr"
%typemap(csout, excode=SWIGEXCODE) char *, char[ANY], char[] { %typemap(csout, excode=SWIGEXCODE) char *, char[ANY], char[] {
string ret = System.Runtime.InteropServices.Marshal.PtrToStringAnsi($imcall);$excode string ret = System.Runtime.InteropServices.Marshal.PtrToStringAnsi($imcall);$excode
return ret; return ret;