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69 lines
2.4 KiB
C++
Executable File
69 lines
2.4 KiB
C++
Executable File
// Created on: 2006-04-13
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// Created by: Andrey BETENEV
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// Copyright (c) 2006-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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// If either NO_CXX_EXCEPTION or OCC_CONVERT_SIGNALS is defined,
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// provide complete implementation
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#include <Standard_ErrorHandlerCallback.ixx>
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#include <Standard_ErrorHandler.hxx>
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#if defined(NO_CXX_EXCEPTION) || defined(OCC_CONVERT_SIGNALS)
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Standard_ErrorHandlerCallback::Standard_ErrorHandlerCallback ()
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: myHandler(0), myPrev(0), myNext(0)
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{
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}
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Standard_ErrorHandlerCallback::~Standard_ErrorHandlerCallback ()
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{
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UnregisterCallback();
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}
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void Standard_ErrorHandlerCallback::RegisterCallback ()
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{
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if ( myHandler ) return; // already registered
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// find current active exception handler
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Standard_ErrorHandler *aHandler =
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Standard_ErrorHandler::FindHandler(Standard_HandlerVoid, Standard_False);
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// if found, add this callback object first to the list
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if ( aHandler ) {
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myHandler = aHandler;
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myNext = aHandler->myCallbackPtr;
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if ( myNext ) ((Standard_ErrorHandlerCallback*)myNext)->myPrev = this;
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aHandler->myCallbackPtr = this;
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}
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}
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void Standard_ErrorHandlerCallback::UnregisterCallback ()
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{
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if ( ! myHandler ) return;
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if ( myNext )
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((Standard_ErrorHandlerCallback*)myNext)->myPrev = myPrev;
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if ( myPrev )
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((Standard_ErrorHandlerCallback*)myPrev)->myNext = myNext;
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else if ( ((Standard_ErrorHandler*)myHandler)->myCallbackPtr == this)
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((Standard_ErrorHandler*)myHandler)->myCallbackPtr = myNext;
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myHandler = myNext = myPrev = 0;
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}
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#endif
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