WinCE中将调试信息写入文件的方法

相信做WinCE开发的朋友都会经常用串口将自己的调试信息打印输出，用来跟踪程序的运行情况，但在有的时候如果机器没有调试串口，我们可以将这些信息写入文本文件中，方便出现Bug后进行代码的跟踪，现将自己写的一段代码发上来与大家分享，希望大家多提建议。

代码中用一个宏，就可以方便的控制调试信息是写文件还是打印输入到调试串口，其中写文件部分给出了两种方法，一种是利用Win32 API的方式写文件，令一种是利用C语言的函数写文件，封装后用起来我觉得还是挺方便的，就跟使用printf/wprintf函数差不多，废话少说，下面直接贴上源代码。

#ifndef __WRITE_DEBUG_LOG_H__

#define __WRITE_DEBUG_LOG_H__

void WriteDebugLog(const char *format,...);

void _TWriteDebugLog(const wchar_t *format,...);

#define WRITE_SYSTIME 1//1表示会写入系统时间，0表示不写入

#define WRITELOG_METHOD 0//写Debug文件的方法，0表示不做任何操作，1是用win32 API写文件，2是用C语言写文件，3表示用printf函数打印信息

#if (WRITELOG_METHOD == 1)

 　　#define STORAGE_ROOT_PATH   TEXT("\\Storage Card\\log.txt")

#elif (WRITELOG_METHOD == 2)

　　 #define STORAGE_ROOT_PATH   ("\\Storage Card\\log.txt")

#endif

#if (WRITELOG_METHOD == 3)

 　　#define LOG  printf

 　　#define WLOG wprintf

#elif (WRITELOG_METHOD != 3)

 　　#define LOG  WriteDebugLog

 　　#define WLOG _TWriteDebugLog

#endif

#endif

#include "stdafx.h"

#include

#include "WriteDebugLog.h"

HANDLE ghLogFile = NULL;

FILE *fp = NULL;

int _tmain(int argc, _TCHAR* argv[])

{

 LOG("%d\r\n", 123456);

 WLOG(L"%d\r\n", 654321);

 return 0;

}

#if (WRITELOG_METHOD == 0)// WRITELOG_METHOD为0表示不做任何操作

void WriteDebugLog(const char *format,...)

{

 return;

}

void _TWriteDebugLog(const wchar_t *format,...)

{

 return;

}

#elif (WRITELOG_METHOD == 1) // WRITELOG_METHOD为1表示用win 32 API的方法来写文件

void WriteDebugLog(const char *format,...)

{

 va_list vl;

    static char sTempWriteBuf[1000];

    static char sWriteBuf[1024];

 memset(sTempWriteBuf, 0, 1000*sizeof(char));

 memset(sWriteBuf, 0, 1024*sizeof(char));

    DWORD loglen = 0;

 SYSTEMTIME time;

 ZeroMemory(&time, sizeof(time));

    static HANDLE h_sema = NULL;

    if (h_sema == NULL)

    {

        h_sema = CreateSemaphore(NULL, 1, 1, NULL);

    }

    WaitForSingleObject(h_sema, INFINITE);

    va_start(vl, format);

    vsprintf(sTempWriteBuf, format, vl);

    va_end(vl);

    if (ghLogFile == NULL)

    {

        ghLogFile = CreateFile((LPCWSTR)STORAGE_ROOT_PATH,

            GENERIC_READ | GENERIC_WRITE,

            FILE_SHARE_READ | FILE_SHARE_WRITE,

            NULL,

            OPEN_ALWAYS,

            FILE_ATTRIBUTE_NORMAL,

            NULL);

    }

 SetFilePointer(ghLogFile, 0, NULL, FILE_END);

   

#if (WRITE_SYSTIME == 1)

 GetLocalTime(&time);

 sprintf(sWriteBuf, "%.2d:%.2d:%.2d===>%s", time.wHour, time.wMinute, time.wSecond, sTempWriteBuf);

 WriteFile(ghLogFile, sWriteBuf, strlen(sWriteBuf), &loglen, NULL);

#elif (WRITE_SYSTIME == 0)

 sprintf(sWriteBuf, "%s", sTempWriteBuf);

 WriteFile(ghLogFile, sWriteBuf, strlen(sWriteBuf), &loglen, NULL);

#endif

  FlushFileBuffers(ghLogFile);

 //CloseHandle(ghLogFile);

 //ghLogFile = NULL;

    ReleaseSemaphore(h_sema, 1, 0);

}

void _TWriteDebugLog(const wchar_t *format,...)

{

 va_list vl;

    static wchar_t sTempWriteBuf[1000];

    static wchar_t sWriteBuf[1024];

 memset(sTempWriteBuf, 0, 1000*sizeof(wchar_t));

 memset(sWriteBuf, 0, 1024*sizeof(wchar_t));

    DWORD loglen = 0;

 SYSTEMTIME time;

 ZeroMemory(&time, sizeof(time));

    static HANDLE h_sema = NULL;

    if (h_sema == NULL)

    {

        h_sema = CreateSemaphore(NULL, 1, 1, NULL);

    }

    WaitForSingleObject(h_sema, INFINITE);

    va_start(vl, format);

    vswprintf(sTempWriteBuf, format, vl);

    va_end(vl);

    if (ghLogFile == NULL)

    {

        ghLogFile = CreateFile((LPCWSTR)STORAGE_ROOT_PATH,

            GENERIC_READ | GENERIC_WRITE,

            FILE_SHARE_READ | FILE_SHARE_WRITE,

            NULL,

            OPEN_ALWAYS,

            FILE_ATTRIBUTE_NORMAL,

            NULL);

    }

 SetFilePointer(ghLogFile, 0, NULL, FILE_END);

#if (WRITE_SYSTIME == 1)

 GetLocalTime(&time);

 swprintf(sWriteBuf, L"%.2d:%.2d:%.2d===>%s", time.wHour, time.wMinute, time.wSecond, sTempWriteBuf);

 int len = wcslen(sWriteBuf);

 char *chWriteBuf = new char[2*len + 1];

 memset(chWriteBuf, 0, 2*len + 1);

 WideCharToMultiByte(CP_ACP, 0, sWriteBuf, len, chWriteBuf, 2*len, NULL, NULL);

 chWriteBuf[2*len] = 0;

 WriteFile(ghLogFile, chWriteBuf, strlen(chWriteBuf), &loglen, NULL);

 delete []chWriteBuf;

#elif (WRITE_SYSTIME == 0)

 swprintf(sWriteBuf, L"%s", sTempWriteBuf);

 int len = wcslen(sWriteBuf);

 char *chWriteBuf = new char[2*len + 1];

 memset(chWriteBuf, 0, 2*len + 1);

 WideCharToMultiByte(CP_ACP, 0, sWriteBuf, len, chWriteBuf, 2*len, NULL, NULL);

 chWriteBuf[2*len] = 0;

 WriteFile(ghLogFile, chWriteBuf, strlen(chWriteBuf), &loglen, NULL);

 delete []chWriteBuf;

#endif

 FlushFileBuffers(ghLogFile);

 //CloseHandle(ghLogFile);

 //ghLogFile = NULL;

    ReleaseSemaphore(h_sema, 1, 0);

}

#elif (WRITELOG_METHOD == 2)// WRITELOG_METHOD为2表示用C语言的方法来写文件

void WriteDebugLog(const char *format,...)

{

if (NULL == fp)

{

  fp = fopen(STORAGE_ROOT_PATH, "a+");

}

 if (NULL == fp)

 {

  fp = NULL;

  return;

 }

 SYSTEMTIME time;

 ZeroMemory(&time, sizeof(time));

 va_list arg_ptr;

#if (WRITE_SYSTIME == 1)

 static char cTimeBuf[20];

 memset(cTimeBuf, 0, 20*sizeof(char));

 GetLocalTime(&time);

 sprintf(cTimeBuf, "%.2d:%.2d:%.2d===>", time.wHour, time.wMinute, time.wSecond);

 va_start(arg_ptr, cTimeBuf);

 vfprintf(fp, cTimeBuf, arg_ptr);

 va_end(arg_ptr);

#elif (WRITE_SYSTIME == 0)

#endif

 va_start(arg_ptr, format);

 vfprintf(fp, format, arg_ptr);

 va_end(arg_ptr);

 fclose(fp);

fp = NULL;

}

void _TWriteDebugLog(const wchar_t *format,...)

{

if (NULL == fp)

{

  fp = fopen(STORAGE_ROOT_PATH, "a+");

}

 if (NULL == fp)

 {

  fp = NULL;

  return;

 }

 SYSTEMTIME time;

 ZeroMemory(&time, sizeof(time));

 va_list arg_ptr;

#if (WRITE_SYSTIME == 1)

 char cTimeBuf[20];

 memset(cTimeBuf, 0, 20*sizeof(char));

 GetLocalTime(&time);

 sprintf(cTimeBuf, "%.2d:%.2d:%.2d===>", time.wHour, time.wMinute, time.wSecond);

 va_start(arg_ptr, cTimeBuf);

 vfprintf(fp, cTimeBuf, arg_ptr);

 va_end(arg_ptr);

#elif (WRITE_SYSTIME == 0)

#endif

 va_start(arg_ptr, format);

 vfwprintf(fp, format, arg_ptr);

 va_end(arg_ptr);

 fclose(fp);

fp = NULL;

}

#endif