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occt/src/Standard/Standard_OutOfMemory.hxx
ski 9775fa6110 0026937: Eliminate NO_CXX_EXCEPTION macro support
Macro NO_CXX_EXCEPTION was removed from code.
Method Raise() was replaced by explicit throw statement.
Method Standard_Failure::Caught() was replaced by normal C++mechanism of exception transfer.
Method Standard_Failure::Caught() is deprecated now.
Eliminated empty constructors.
Updated samples.
Eliminate empty method ChangeValue from NCollection_Map class.
Removed not operable methods from NCollection classes.
2017-02-02 16:35:54 +03:00

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// Created on: 1991-09-05
// Created by: J.P. TIRAUlt
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _Standard_OutOfMemory_HeaderFile
#define _Standard_OutOfMemory_HeaderFile
#include <Standard_Type.hxx>
#include <Standard_DefineException.hxx>
#include <Standard_SStream.hxx>
#include <Standard_ProgramError.hxx>
class Standard_OutOfMemory;
DEFINE_STANDARD_HANDLE(Standard_OutOfMemory, Standard_ProgramError)
#if !defined No_Exception && !defined No_Standard_OutOfMemory
#define Standard_OutOfMemory_Raise_if(CONDITION, MESSAGE) \
if (CONDITION) throw Standard_OutOfMemory(MESSAGE);
#else
#define Standard_OutOfMemory_Raise_if(CONDITION, MESSAGE)
#endif
//! Standard_OutOfMemory exception is defined explicitly and not by
//! macro DEFINE_STANDARD_EXCEPTION, to avoid necessity of dynamic
//! memory allocations during throwing and stack unwinding:
//!
//! - method NewInstance() returns static instance (singleton)
//! - method Raise() raises copy of that singleton, resetting
//! its message string
//! - message string is stored as field, not allocated dynamically
//! (storable message length is limited by buffer size)
//!
//! The reason is that in out-of-memory condition any memory allocation can
//! fail, thus use of operator new for allocation of new exception instance
//! is dangerous (can cause recursion until stack overflow, see #24836).
class Standard_OutOfMemory : public Standard_ProgramError
{
Standard_EXPORT void Throw () const Standard_OVERRIDE;
public:
//! Constructor is kept public for backward compatibility
Standard_EXPORT Standard_OutOfMemory(const Standard_CString theMessage = 0);
//! Returns error message
Standard_EXPORT Standard_CString GetMessageString() const Standard_OVERRIDE;
//! Sets error message
Standard_EXPORT void SetMessageString (const Standard_CString aMessage) Standard_OVERRIDE;
//! Raises exception with specified message string
Standard_EXPORT static void Raise(const Standard_CString theMessage = "");
//! Raises exception with specified message string
Standard_EXPORT static void Raise(Standard_SStream& theMessage);
//! Returns global instance of exception
Standard_EXPORT static Handle(Standard_OutOfMemory) NewInstance(const Standard_CString theMessage = "");
DEFINE_STANDARD_RTTIEXT(Standard_OutOfMemory,Standard_ProgramError)
protected:
char myBuffer[1024];
};
#endif // _Standard_OutOfMemory_HeaderFile