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111 lines
4.7 KiB
111 lines
4.7 KiB
// ExceptionContext.h -- Exception Context class definition
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// (c) Copyright Schlumberger Technology Corp., unpublished work,
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// created 2001. This computer program includes Confidential,
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// Proprietary Information and is a Trade Secret of Schlumberger
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// Technology Corp. All use, disclosure, and/or reproduction is
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// prohibited unless authorized in writing. All Rights Reserved.
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#if !defined(SLBCSP_EXCEPTIONCONTEXT_H)
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#define SLBCSP_EXCEPTIONCONTEXT_H
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#include <memory> // for auto_ptr
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#include <scuOsExc.h>
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/////////////////////////// HELPERS /////////////////////////////////
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// Macros to trap exceptions and set the exception context
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// appropriately with an optionally throw.
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#define EXCCTX_TRY \
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{ \
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try
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#define EXCCTX_CATCH(pExcCtx, fDoThrow) \
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catch (scu::Exception const &rExc) \
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{ \
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if (!pExcCtx->Exception()) \
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pExcCtx->Exception(auto_ptr<scu::Exception const>(rExc.Clone())); \
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} \
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\
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catch (std::bad_alloc const &) \
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{ \
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if (!pExcCtx->Exception()) \
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pExcCtx->Exception(auto_ptr<scu::Exception const>(scu::OsException(NTE_NO_MEMORY).Clone())); \
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} \
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\
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catch (...) \
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{ \
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if (!pExcCtx->Exception()) \
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pExcCtx->Exception(auto_ptr<scu::Exception const>(scu::OsException(NTE_FAIL).Clone())); \
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} \
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\
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if (fDoThrow) \
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pExcCtx->PropagateException(); \
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}
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// Abstract base class mixin for derived classes that want to maintain
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// an exception context. Typically this is used in conjuction with
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// calling conventional libraries that require a callback routine and
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// that callback routine want to raise exceptions which shouldn't be
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// thrown across the library.
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class ExceptionContext
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{
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public:
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// Types
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// C'tors/D'tors
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explicit
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ExceptionContext();
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virtual
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~ExceptionContext();
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// Operators
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// Operations
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void
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Exception(std::auto_ptr<scu::Exception const> &rapexc);
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void
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ClearException();
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void
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PropagateException();
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void
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PropagateException(std::auto_ptr<scu::Exception const> &rapExc);
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// Access
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scu::Exception const *
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Exception() const;
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// Predicates
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protected:
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// Types
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// C'tors/D'tors
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// Operators
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// Operations
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// Access
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// Predicates
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// Variables
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private:
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// Types
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// C'tors/D'tors
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ExceptionContext(ExceptionContext const &rhs); // not defined, copying not allowed
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// Operators
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ExceptionContext &
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operator=(ExceptionContext const &rhs); // not defined, assignment not allowed
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// Operations
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// Access
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// Predicates
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// Variables
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std::auto_ptr<scu::Exception const> m_apexception;
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};
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#endif // SLBCSP_EXCEPTIONCONTEXT_H
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