windows-nt/Source/XPSP1/NT/multimedia/directx/dmusic/dmstyle/debug.cpp
2020-09-26 16:20:57 +08:00

116 lines
2.5 KiB
C++

//
// Debug.CPP
//
// Copyright (c) 1997-1998 Microsoft Corporation
//
// @doc INTERNAL
//
// @module Debug | Debug services for DMusic.DLL
//
#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include "debug.h"
#ifdef DBG
#define MODULE "DMSTYLE"
// @globalv Section in WIN.INI for all debug settings
const char szDebugSection[] = "debug";
// @globalv Key in WIN.INI for our debug level. All messages with
// a level of this number or lower will be displayed.
const char szDebugKey[] = MODULE;
// @globalv Key in WIN.INI [debug] section which determines if assert calls
// DebugBreak or not
//
const char szAssertBreak[] = "AssertBreak";
// @globalv Prefix for all debug outputs
//
const char szDebugPrefix[] = MODULE ": ";
// @globalv The current debug level.
static int giDebugLevel;
// @globalv Do asserts break?
static BOOL gfAssertBreak;
// @func Sets the debug level from WIN.INI
//
void DebugInit(
void)
{
giDebugLevel = GetProfileInt(szDebugSection, szDebugKey, 0);
gfAssertBreak = GetProfileInt(szDebugSection, szAssertBreak, 0);
// Nepotism at its finest
DebugTrace(-1, "Debug level is %d\n", giDebugLevel);
}
// @func Send a debug trace out.
//
// @comm Any message with a level less than or equal to the current debug
// level will be displayed using the OutputDebugString API. This means either
// the IDE Debug window if the app is running in that context or WDEB if
// it's running.
//
static BOOL fNeedPrefix = TRUE;
void DebugTrace(
int iDebugLevel, // @parm The debug level of this message
LPSTR pstrFormat, // @parm A printf style format string
...) // @parm | ... | Variable paramters based on <p pstrFormat>
{
char sz[512];
if (iDebugLevel != -1 && iDebugLevel > giDebugLevel)
{
return;
}
va_list va;
va_start(va, pstrFormat);
vsprintf(sz, pstrFormat, va);
va_end(va);
if (fNeedPrefix)
{
OutputDebugString(szDebugPrefix);
}
OutputDebugString(sz);
// Let them construct multiple piece trace outs w/o
// prefixing each one
//
fNeedPrefix = FALSE;
for (;*pstrFormat && !fNeedPrefix; ++pstrFormat)
{
if (*pstrFormat == '\n')
{
fNeedPrefix = TRUE;
}
}
}
void DebugAssert(
LPSTR szExp,
LPSTR szFile,
ULONG ulLine)
{
DebugTrace(0, "ASSERT: \"%s\" %s@%lu\n", szExp, szFile, ulLine);
if (gfAssertBreak)
{
DebugBreak();
}
}
#endif