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392 lines
12 KiB
392 lines
12 KiB
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996 - 2002.
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//
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// File: ciexcpt.cxx
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//
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// Contents: Macro package for C++ exception support
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//
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// Classes: CException -- The base for all exception classes
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// CExceptionContext -- Per-thread exception context.
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// CUnwindable -- Classes with destructors inherit
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// from this.
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//
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// History: 22-May-91 KyleP Created Interface.
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// 15-Aug-91 SethuR Included terminate(),unexpected()
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// set_unexpected(),set_terminate()
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// 18-Oct-91 KyleP Win32 try/except implementation
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// 19-Nov-91 KyleP Fix heap unwind, multiple inheritance
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// 14-May-92 BryanT Disable heapchk for FLAT builds.
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// 25-Apr-95 DwightKr Native C++ exception support
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// 30-Oct-98 KLam Translate in page error to disk full
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// when appropriate
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// 07-Jan-99 KLam Debug out when in page error occurs
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//
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// Notest: This file is a hack until C 9.x supports exceptions for
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// compilers on all platforms
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//
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//----------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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//
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// If EXCEPT_TEST is defined, then the exception code can be compiled
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// without use the the 'Win4 environment'. This is only to facilitate
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// testing. When EXCEPT_TEST is defined debug messages are printed
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// to stdout instead of the debug terminal.
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//
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#if !defined( EXCEPT_TEST )
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# if CIDBG == 1
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DECLARE_DEBUG( ex )
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//
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// See ciexcpt.hxx for an explanation of why exInlineDebugOut isn't used.
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//
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void exInlineDebugOut2(unsigned long fDebugMask, char const *pszfmt, ...)
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{
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va_list ArgList;
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va_start(ArgList, pszfmt);
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if (exInfoLevel & fDebugMask)
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{
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vdprintf(fDebugMask, exInfoLevelString, (char const *) pszfmt, ArgList);
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}
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va_end(ArgList);
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}
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# endif // (CIDBG == 1)
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# if CIDBG == 1
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//
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// The default is to print exception messages to debug terminal.
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//
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unsigned long Win4ExceptionLevel = EXCEPT_MESSAGE;
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# if !defined( DECLARE_INFOLEVEL )
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extern EXTRNC unsigned long comp##InfoLevel = DEF_INFOLEVEL;
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extern EXTRNC char *comp##InfoLevelString = #comp;
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# else
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DECLARE_INFOLEVEL(ex)
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# endif
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# endif // (CIDBG == 1)
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//+---------------------------------------------------------------------------
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//
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// Function: SetWin4ExceptionLevel
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//
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// Synopsis: Sets global exception level
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//
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// History: 15-Sep-91 KevinRo Created
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//
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//----------------------------------------------------------------------------
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# if (CIDBG == 1)
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EXPORTIMP unsigned long APINOT
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SetWin4ExceptionLevel(
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unsigned long ulNewValue)
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{
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unsigned long ul;
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ul = Win4ExceptionLevel;
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Win4ExceptionLevel = ulNewValue;
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return(ul);
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}
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ULONG GetWin4ExceptionLevel(void)
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{
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return Win4ExceptionLevel;
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}
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# endif // (CIDBG == 1)
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#endif // !EXCEPT_TEST
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//
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// Heap checking can be turned on with this variable.
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// 0x00000001 = Always check new/delete
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// 0x00000002 = Check delete during unwind.
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//
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extern "C"
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{
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int newHeapCheck = 0;
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}
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//
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// In a multi-threaded (e.g. Win32) environment, we need one
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// exception context per thread.
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//
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enum Unwindability
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{
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NonUnwindable
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};
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void * __cdecl
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operator new ( size_t s, Unwindability dummy )
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{
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#if defined ( _AUTOCHECK_ )
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return RtlAllocateHeap( RtlProcessHeap(), 0, s );
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#else
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return(malloc(s));
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#endif // _AUTOCHECK_
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}
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//+-------------------------------------------------------------------------
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//
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// Function: GetScodeError, public
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//
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// Synopsis: Translates an NTSTATUS or HRESULT into an HRESULT (SCODE)
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//
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// Arguments: [e] -- The exception object
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//
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// Returns A SCODE equivalent
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//
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// History: 3-Feb-98 dlee Created
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//
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//--------------------------------------------------------------------------
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EXPORTIMP SCODE APINOT GetScodeError( CException & e )
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{
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//
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// This function normalizes NTSTATUS, HRESULTS, and Win32 error codes
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// into a Win32 error. Note that it is illegal in CI to throw Win32
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// error codes because they will be confused with HRESULT success codes
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//
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// n.b. A side effect is that this error is set in the thread's LastError
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//
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SCODE sc = e.GetErrorCode();
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// If it looks like an HRESULT already, just return it.
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if ( 0x80000000 == ( 0xC0000000 & sc ) )
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return sc;
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//
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// If it's a CI 0xC error, don't try to map it since it'll return
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// ERROR_MR_MID_NOT_FOUND (and DbgBreak on checked builds).
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//
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if ( 0xC0041000 == ( 0xC0041000 & sc ) )
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return sc;
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DWORD dwError = RtlNtStatusToDosError( sc );
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if ( ERROR_MR_MID_NOT_FOUND == dwError )
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{
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ciDebugOut(( DEB_WARN, "mr mid for error %#x\n", sc ));
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return sc;
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}
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return HRESULT_FROM_WIN32( dwError );
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} //GetScodeError
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//+-------------------------------------------------------------------------
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//
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// Method: IsOleError, public
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//
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// Synopsis: return TRUE if sc looks like an OLE SCODE.
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//
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// History: 19-Apr-95 BartoszM Created
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//
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//--------------------------------------------------------------------------
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inline BOOL IsOleError (NTSTATUS sc)
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{
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// if it's a win32 facility error in an hresult, only certain
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// instances are allowed returned by oledb. Map others to E_FAIL.
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if ( 0x80070000 == ( sc & 0x80070000 ) )
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{
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if ( E_OUTOFMEMORY == sc ||
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E_INVALIDARG == sc ||
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E_HANDLE == sc ||
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E_ACCESSDENIED == sc )
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return TRUE;
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else
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return FALSE;
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}
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else if ( 0x80030000 == ( sc & 0x80030000 ) )
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{
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// storage errors aren't allowed by ole-db
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return FALSE;
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}
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return ((sc & 0xFFF00000) == 0x80000000) ||
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(SUCCEEDED(sc) && (sc & 0xFFFFF000) != 0);
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} //IsOleError
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//+-------------------------------------------------------------------------
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//
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// Method: GetOleError, public
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//
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// History: 19-Apr-95 BartoszM Created
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// 26-Apr-95 DwightKr Converted from method to function
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// so that it can be independent from
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// the class CException which is now
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// part of the C++ run-time package.
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//
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//--------------------------------------------------------------------------
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EXPORTIMP SCODE APINOT GetOleError(CException & e)
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{
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NTSTATUS scError = e.GetErrorCode();
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if (IsOleError(scError))
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{
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return scError;
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}
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else if ( ( STATUS_NO_MEMORY == scError ) ||
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( STATUS_COMMITMENT_LIMIT == scError ) ||
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( STATUS_INSUFFICIENT_RESOURCES == scError ) ||
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( HRESULT_FROM_WIN32( ERROR_COMMITMENT_LIMIT ) == scError ) ||
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( HRESULT_FROM_WIN32( ERROR_NO_SYSTEM_RESOURCES ) == scError ) ||
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( STG_E_TOOMANYOPENFILES == scError ) ||
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( STG_E_INSUFFICIENTMEMORY == scError ) )
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{
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return E_OUTOFMEMORY;
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}
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else if ( STATUS_ACCESS_DENIED == scError )
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return E_ACCESSDENIED;
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else if ( STATUS_INVALID_HANDLE == scError )
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return E_HANDLE;
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else if ( STATUS_INVALID_PARAMETER == scError )
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return E_INVALIDARG;
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else
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{
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exDebugOut(( DEB_ITRACE, "GetOleError - mapping %08x to E_FAIL\n", scError));
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return E_FAIL;
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}
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}
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CException::CException()
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: _lError( HRESULT_FROM_WIN32( GetLastError() ) ),
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_dbgInfo( 0 )
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{
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} //CException
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#if CIDBG == 1
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//+---------------------------------------------------------------------------
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//
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// Function: ExceptionReport
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//
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// Synopsis: Outputs Exception messages based on the Win4ExceptionLevel
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// variable. Used by programs compiled with DEBUG defined
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//
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// History: 15-Sep-91 KevinRo Created
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//
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//----------------------------------------------------------------------------
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EXPORTIMP void APINOT
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ExceptionReport(
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unsigned int iLine,
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char *szFile,
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char *szMsg,
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long lError )
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{
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# if DBG
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if (Win4ExceptionLevel & EXCEPT_MESSAGE)
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{
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DWORD tid = GetCurrentThreadId();
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exDebugOut((DEB_FORCE,
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"%s - line: %u file: %s, thread id %x\n",
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szMsg, iLine, szFile, tid));
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if (lError != -1)
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exDebugOut((DEB_FORCE,"\terror code 0x%lx\n", lError ));
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}
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# endif
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if (Win4ExceptionLevel & EXCEPT_POPUP)
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{
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if(PopUpError(szMsg,iLine,szFile) == IDCANCEL)
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{
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DebugBreak();
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}
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}
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else
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{
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if (Win4ExceptionLevel & EXCEPT_BREAK)
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{
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DebugBreak();
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}
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}
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}
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#endif // CIDBG == 1
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//+-------------------------------------------------------------------------
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//
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// Setup the runtime package to translate system exceptions (i.e. those
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// usually processed by try / except blocks) into C++ exceptions (those
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// processed by try / catch blocks). This has no effect on try / except
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// blocks; as they will still continue to see the standard C exception.
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//
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// The translation is accomplished by telling the C run-time package to
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// call a user-specified function each time a system exception occurs. The
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// function translates the exception into a class and rethrows with the
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// class. If their is a following CATCH block, then the C++ class will
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// be caught. If there is a following except, then the original system
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// exception will be caught.
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//
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//--------------------------------------------------------------------------
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//
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// Convert system exceptions to a C++ exception.
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//
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void _cdecl SystemExceptionTranslator( unsigned int uiWhat,
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struct _EXCEPTION_POINTERS * pexcept )
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{
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//
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// Intentionally don't translate STATUS_PRIVILEGED_INSTRUCTION (see
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// Win4AssertEx for details.
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//
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//
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// In certain situations when a compressed or sparse file is mapped and we
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// run out of disk space the system can throw an in page error instead of
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// the appropriate error
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//
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// Throw the proper exception code so that the error can be handled correctly
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//
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if ( STATUS_IN_PAGE_ERROR == pexcept->ExceptionRecord->ExceptionCode &&
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pexcept->ExceptionRecord->NumberParameters >= 3 )
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{
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exDebugOut(( DEB_WARN, "SystemExceptionTranslator: Received In Page IO Error\n"));
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Win4Assert ( STATUS_IN_PAGE_ERROR == uiWhat );
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if ( STATUS_DISK_FULL == pexcept->ExceptionRecord->ExceptionInformation[2] ||
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STATUS_VOLUME_DISMOUNTED == pexcept->ExceptionRecord->ExceptionInformation[2] ||
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STATUS_INSUFFICIENT_RESOURCES == pexcept->ExceptionRecord->ExceptionInformation[2] )
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{
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exDebugOut(( DEB_WARN, "SystemExceptionTranslator: Translating In Page IO Error to 0x%x\n",
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(unsigned int) pexcept->ExceptionRecord->ExceptionInformation[2] ));
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uiWhat = (unsigned int) pexcept->ExceptionRecord->ExceptionInformation[2];
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pexcept->ExceptionRecord->ExceptionCode = (NTSTATUS) pexcept->ExceptionRecord->ExceptionInformation[2];
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}
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}
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#if CIDBG == 1
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if ( ASSRT_STRESSEXCEPTION != uiWhat )
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throw CException( uiWhat ) ;
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#else
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throw CException( uiWhat ) ;
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#endif
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} //SystemExceptionTranslator
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