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598 lines
15 KiB
598 lines
15 KiB
//+--------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992
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//
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// File: debug.cxx
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//
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// Contents: Debugging routines
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//
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// History: 07-Mar-92 DrewB Created
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//
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//---------------------------------------------------------------
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#include <dfhead.cxx>
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#pragma hdrstop
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#if DBG == 1
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#include <stdarg.h>
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#include <dfdeb.hxx>
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#include <logfile.hxx>
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#include <df32.hxx>
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//+-------------------------------------------------------------
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//
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// Function: DfDebug, public
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//
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// Synopsis: Sets debugging level
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//
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//---------------------------------------------------------------
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DECLARE_INFOLEVEL(ol);
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#define LOGFILENAME L"logfile.txt"
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static CGlobalFileStream *_pgfstLogFiles = NULL;
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WCHAR gwcsLogFile[] = LOGFILENAME;
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STDAPI_(void) DfDebug(ULONG ulLevel, ULONG ulMSFLevel)
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{
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#if DBG == 1
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olInfoLevel = ulLevel;
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SetInfoLevel(ulMSFLevel);
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_SetWin4InfoLevel(ulLevel | ulMSFLevel);
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olDebugOut((DEB_ITRACE, "\n-- DfDebug(0x%lX, 0x%lX)\n",
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ulLevel, ulMSFLevel));
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#endif
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}
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// Resource limits
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static LONG lResourceLimits[CDBRESOURCES] =
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{
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0x7fffffff, // DBR_MEMORY
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0x7fffffff, // DBR_XSCOMMITS
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0x0, // DBR_FAILCOUNT
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0x0, // DBR_FAILLIMIT
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0x0, // DBR_FAILTYPES
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0x0, // DBRQ_MEMORY_ALLOCATED
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0x0, // DBRI_ALLOC_LIST
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0x0, // DBRI_LOGFILE_LIST
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0x0, // DBRF_LOGGING
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0x0, // DBRQ_HEAPS
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0x0 // DBRF_SIFTENABLE
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};
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#define CBRESOURCES sizeof(lResourceLimits)
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#define RESLIMIT(n) lResourceLimits[n]
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#define TAKEMTX
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#define RELEASEMTX
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//+---------------------------------------------------------------------------
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//
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// Function: DfSetResLimit, public
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//
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// Synopsis: Sets a resource limit
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//
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// History: 24-Nov-92 DrewB Created
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//
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//----------------------------------------------------------------------------
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STDAPI_(void) DfSetResLimit(UINT iRes, LONG lLimit)
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{
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TAKEMTX;
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RESLIMIT(iRes) = lLimit;
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RELEASEMTX;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: DfGetResLimit, public
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//
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// Synopsis: Gets a resource limit
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//
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// History: 24-Nov-92 DrewB Created
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//
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//----------------------------------------------------------------------------
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STDAPI_(LONG) DfGetResLimit(UINT iRes)
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{
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// Doesn't need serialization
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return RESLIMIT(iRes);
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}
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STDAPI_(void) DfSetFailureType(LONG lTypes)
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{
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RESLIMIT(DBR_FAILTYPES) = lTypes;
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return;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: HaveResource, private
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//
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// Synopsis: Checks to see if a resource limit is exceeded
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// and consumes resource if not
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//
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// History: 24-Nov-92 DrewB Created
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//
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//----------------------------------------------------------------------------
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BOOL HaveResource(UINT iRes, LONG lRequest)
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{
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if (RESLIMIT(DBRF_SIFTENABLE) == FALSE)
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return TRUE;
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if (RESLIMIT(iRes) >= lRequest)
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{
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TAKEMTX;
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RESLIMIT(iRes) -= lRequest;
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RELEASEMTX;
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return TRUE;
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}
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return FALSE;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: ModifyResLimit, private
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//
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// Synopsis: Adds to a resource limit
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//
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// History: 24-Nov-92 DrewB Created
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//
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//----------------------------------------------------------------------------
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LONG ModifyResLimit(UINT iRes, LONG lChange)
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{
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LONG l;
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TAKEMTX;
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RESLIMIT(iRes) += lChange;
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l = RESLIMIT(iRes);
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RELEASEMTX;
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return l;
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}
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//+-------------------------------------------------------------------------
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//
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// Function: SimulateFailure
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//
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// Synopsis: Check for simulated failure
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//
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// Effects: Tracks failure count
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//
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// Arguments: [failure] -- failure type
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//
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// Returns: TRUE if call should fail, FALSE if call should succeed
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//
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// Modifies: RESLIMIT(DBR_FAILCOUNT)
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//
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// Algorithm: Increment failure count, fail if count has succeeded
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// limit
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//
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// History: 21-Jan-93 AlexT Created
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//
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//--------------------------------------------------------------------------
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BOOL SimulateFailure(DBFAILURE failure)
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{
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LONG l;
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BOOL fFail;
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// We don't special case failure types, yet.
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if (RESLIMIT(DBRF_SIFTENABLE) != FALSE &&
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(failure & RESLIMIT(DBR_FAILTYPES)))
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{
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TAKEMTX;
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RESLIMIT(DBR_FAILCOUNT)++;
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l = RESLIMIT(DBR_FAILLIMIT);
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fFail = RESLIMIT(DBR_FAILCOUNT) >= l;
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RELEASEMTX;
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if (l == 0)
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{
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// We're not simulating any failures; just tracking them
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return(FALSE);
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}
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return fFail;
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}
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else
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{
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return FALSE;
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}
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}
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//+--------------------------------------------------------------
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//
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// Class: CChecksumBlock (cb)
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//
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// Purpose: Holds a memory block that is being checksummed
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//
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// Interface: See below
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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class CChecksumBlock
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{
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public:
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CChecksumBlock(char *pszName,
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void *pvAddr,
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ULONG cBytes,
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DWORD dwFlags,
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CChecksumBlock *pcbNext,
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CChecksumBlock *pcbPrev);
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~CChecksumBlock(void);
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char *_pszName;
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void *_pvAddr;
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ULONG _cBytes;
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DWORD _dwFlags;
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CChecksumBlock *_pcbNext, *_pcbPrev;
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ULONG _ulChecksum;
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};
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// Global list of checksummed blocks
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static CChecksumBlock *pcbChkBlocks = NULL;
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//+--------------------------------------------------------------
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//
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// Member: CChecksumBlock::CChecksumBlock, private
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//
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// Synopsis: Ctor
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//
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// Arguments: [pszName] - Block name
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// [pvAddr] - Starting addr
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// [cBytes] - Length
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// [dwFlags] - Type flags
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// [pcbNext] - Next checksum block
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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CChecksumBlock::CChecksumBlock(char *pszName,
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void *pvAddr,
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ULONG cBytes,
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DWORD dwFlags,
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CChecksumBlock *pcbNext,
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CChecksumBlock *pcbPrev)
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{
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ULONG i;
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char *pc;
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olVerify(_pszName = new char[strlen(pszName)+1]);
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StringCchCopyA (_pszName, strlen(pszName)+1, pszName);
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_pvAddr = pvAddr;
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_cBytes = cBytes;
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_dwFlags = dwFlags;
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_pcbNext = pcbNext;
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if (pcbNext)
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pcbNext->_pcbPrev = this;
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_pcbPrev = pcbPrev;
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if (pcbPrev)
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pcbPrev->_pcbNext = this;
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_ulChecksum = 0;
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pc = (char *)pvAddr;
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for (i = 0; i<cBytes; i++)
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_ulChecksum += *pc++;
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}
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//+--------------------------------------------------------------
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//
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// Member: CChecksumBlock::~CChecksumBlock, private
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//
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// Synopsis: Dtor
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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CChecksumBlock::~CChecksumBlock(void)
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{
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delete _pszName;
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}
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//+--------------------------------------------------------------
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//
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// Function: DbgChkBlocks, private
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//
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// Synopsis: Verify checksums on all current blocks
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//
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// Arguments: [dwFlags] - Types of blocks to check
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// [pszFile] - File check was called from
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// [iLine] - Line in file
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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void DbgChkBlocks(DWORD dwFlags, char *pszFile, int iLine)
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{
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CChecksumBlock *pcb;
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for (pcb = pcbChkBlocks; pcb; pcb = pcb->_pcbNext)
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if (pcb->_dwFlags & dwFlags)
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{
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ULONG i, ulSum = 0;
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char *pc;
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for (pc = (char *)pcb->_pvAddr, i = 0; i<pcb->_cBytes; i++)
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ulSum += *pc++;
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if (ulSum != pcb->_ulChecksum)
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olDebugOut((DEB_ERROR, "* Bad checksum %s:%d '%s' %p:%lu *\n",
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pszFile, iLine, pcb->_pszName,
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pcb->_pvAddr, pcb->_cBytes));
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else if (dwFlags & DBG_VERBOSE)
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olDebugOut((DEB_ERROR, "* Checksum passed %s:%d"
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" '%s' %p:%lu *\n",
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pszFile, iLine, pcb->_pszName,
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pcb->_pvAddr, pcb->_cBytes));
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}
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}
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//+--------------------------------------------------------------
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//
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// Function: DbgAddChkBlock, private
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//
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// Synopsis: Adds a checksum block
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//
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// Arguments: [pszName] - Name of block
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// [pvAddr] - Starting addr
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// [cBytes] - Length
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// [dwFlags] - Type flags
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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void DbgAddChkBlock(char *pszName,
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void *pvAddr,
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ULONG cBytes,
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DWORD dwFlags)
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{
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CChecksumBlock *pcb;
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olVerify(pcb = new CChecksumBlock(pszName, pvAddr, cBytes,
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dwFlags, pcbChkBlocks, NULL));
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pcbChkBlocks = pcb;
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}
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//+--------------------------------------------------------------
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//
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// Function: DbgFreeChkBlock, private
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//
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// Synopsis: Removes a block from the list
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//
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// Arguments: [pvAddr] - Block's check address
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//
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// History: 10-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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void DbgFreeChkBlock(void *pvAddr)
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{
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CChecksumBlock *pcb;
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for (pcb = pcbChkBlocks; pcb; pcb = pcb->_pcbNext)
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if (pcb->_pvAddr == pvAddr)
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{
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if (pcb->_pcbPrev)
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pcb->_pcbPrev->_pcbNext = pcb->_pcbNext;
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else
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pcbChkBlocks = pcb->_pcbNext;
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if (pcb->_pcbNext)
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pcb->_pcbNext->_pcbPrev = pcb->_pcbPrev;
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delete pcb;
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return;
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}
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}
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//+--------------------------------------------------------------
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//
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// Function: DbgFreeChkBlocks, private
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//
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// Synopsis: Frees all checksum blocks
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//
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// History: 08-Apr-92 DrewB Created
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//
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//---------------------------------------------------------------
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void DbgFreeChkBlocks(void)
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{
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CChecksumBlock *pcb;
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while (pcbChkBlocks)
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{
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pcb = pcbChkBlocks->_pcbNext;
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delete pcbChkBlocks;
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pcbChkBlocks = pcb;
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}
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}
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static CGlobalFileStream *g_pDebugLogGlobalFileStream = NULL;
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inline CGlobalFileStream *GetGlobalFileStream()
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{
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return g_pDebugLogGlobalFileStream;
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}
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inline void SetGlobalFileStream(CGlobalFileStream *pgfst)
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{
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g_pDebugLogGlobalFileStream = pgfst;
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}
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#ifdef MULTIHEAP
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static CFileStream *g_pDebugLogFileStream = NULL;
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#endif
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SCODE GetLogFile(CFileStream **pfs)
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#ifdef MULTIHEAP
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{
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// Do not use shared memory to write log files
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SCODE sc = S_OK;
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if (GetGlobalFileStream() == NULL)
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{
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g_pDebugLogGlobalFileStream = ::new CGlobalFileStream
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(NULL, 0, LOGFILEDFFLAGS, LOGFILESTARTFLAGS);
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SetGlobalFileStream (g_pDebugLogGlobalFileStream);
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g_pDebugLogFileStream = ::new CFileStream (NULL);
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}
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g_pDebugLogFileStream->InitFromGlobal(GetGlobalFileStream());
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*pfs = g_pDebugLogFileStream;
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return sc;
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}
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#else
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{
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SCODE sc = S_OK;
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CFileStream *pfsLoop = NULL;
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*pfs = NULL;
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if (GetGlobalFileStream() == NULL)
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{
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IMalloc *pMalloc;
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olHChk(DfCreateSharedAllocator(&pMalloc));
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SetGlobalFileStream(new (pMalloc) CGlobalFileStream(pMalloc,
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0, LOGFILEDFFLAGS,
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LOGFILESTARTFLAGS));
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pMalloc->Release();
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}
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if (GetGlobalFileStream() != NULL)
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{
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pfsLoop = GetGlobalFileStream()->Find(GetCurrentContextId());
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if (pfsLoop == NULL)
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{
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IMalloc *pMalloc;
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olHChk(DfCreateSharedAllocator(&pMalloc));
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pfsLoop = new (pMalloc) CFileStream(pMalloc);
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pMalloc->Release();
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if (pfsLoop != NULL)
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pfsLoop->InitFromGlobal(GetGlobalFileStream());
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}
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}
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EH_Err:
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*pfs = pfsLoop;
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return sc;
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}
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#endif // MULIHEAP
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SCODE _FreeLogFile(void)
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{
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#ifdef MULTIHEAP
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if (GetGlobalFileStream())
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{
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g_pDebugLogFileStream->RemoveFromGlobal();
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memset (g_pDebugLogGlobalFileStream, 0, sizeof(CContextList));
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::delete g_pDebugLogFileStream;
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::delete g_pDebugLogGlobalFileStream;
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SetGlobalFileStream (NULL);
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}
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return S_OK;
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#else
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CFileStream *pfsLoop = NULL;
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if (GetGlobalFileStream())
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pfsLoop = GetGlobalFileStream()->Find(GetCurrentContextId());
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if (pfsLoop != NULL)
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{
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pfsLoop->vRelease();
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GetGlobalFileStream()->Release();
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SetGlobalFileStream(NULL);
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return S_OK;
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}
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return STG_E_UNKNOWN;
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#endif
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}
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long cLogNestings = 0;
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void OutputLogfileMessage(char const *format, ...)
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{
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int length;
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char achPreFormat[] = "PID[%lx] TID[%lx] ";
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char achBuffer[256];
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ULONG cbWritten;
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CFileStream *pfs = NULL;
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va_list arglist;
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STATSTG stat;
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if (cLogNestings > 0)
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return;
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TAKEMTX;
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cLogNestings++;
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va_start(arglist, format);
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GetLogFile(&pfs);
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if (NULL != pfs)
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{
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pfs->InitFile(gwcsLogFile);
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pfs->Stat(&stat, STATFLAG_NONAME);
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if (DfGetResLimit(DBRF_LOGGING) & DFLOG_PIDTID)
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{
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// Prepare prefix string
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StringCbPrintfA(achBuffer, sizeof(achBuffer), "PID[%8lx] TID[%8lx] ",
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GetCurrentProcessId(), GetCurrentThreadId());
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// length does not include NULL terminator
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length = (int) strlen(achBuffer);
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pfs->WriteAt(stat.cbSize, achBuffer, length, &cbWritten);
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stat.cbSize.LowPart += cbWritten;
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}
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// Write caller data to logfile
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StringCbVPrintfA(achBuffer, sizeof(achBuffer), format, arglist);
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length = (int) strlen(achBuffer);
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for (int i = 0; i < length; i++)
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{
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if (((achBuffer[i] < 32) || (achBuffer[i] > 127)) &&
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(achBuffer[i] != '\n') && (achBuffer[i] != '\t'))
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{
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achBuffer[i] = '.';
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}
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}
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pfs->WriteAt(stat.cbSize, achBuffer, length, &cbWritten);
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}
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cLogNestings--;
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RELEASEMTX;
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}
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#endif // DBG == 1
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