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141 lines
3.7 KiB
141 lines
3.7 KiB
// Name: Mohsin Ahmed
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// Email: [email protected]
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// Date: Fri Jan 24 10:33:54 1997
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// File: d:/nt/PRIVATE/net/sockets/tcpsvcs/lpd/trace.c
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// Synopsis: Too many bugs, need to keep track in the field.
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#include "lpd.h"
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char LogFileName[1000];
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FILE * LogFile = NULL;
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// ========================================================================
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void
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LogTime( void )
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{
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time_t now;
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time( &now );
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LOGIT(( " Time %s", ctime( &now ) ));
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}
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// ========================================================================
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// Opens filename in append mode.
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// LogFileName is set to filename or debugger.
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// On success: LogFile handle
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// On failure: NULL
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// ========================================================================
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CRITICAL_SECTION csLogit;
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FILE *
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beginlogging( char * filename )
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{
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int ok;
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if( ! filename ){
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DbgPrint( "lpd No log file?\n");
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return 0;
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}
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if( LogFile ){
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DbgPrint( "lpd: Already logging.\n");
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return 0;
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}
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assert( LogFile == NULL );
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ok = ExpandEnvironmentStringsA( filename,
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LogFileName,
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sizeof( LogFileName ) );
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if( !ok ){
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DbgPrint("ExpandEnvironmentStrings(%s) failed, err=%d\n",
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filename, GetLastError() );
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strcpy( LogFileName, "<debugger>" );
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}else{
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LogFile = fopen( LogFileName, "a+" );
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if( LogFile == NULL ){
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DbgPrint( "lpd: Cannot open LogFileName=%s\n", LogFileName );
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strcpy( LogFileName, "<debugger>" );
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}
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}
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if( LogFile ){
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InitializeCriticalSection( &csLogit );
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LogTime();
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fprintf( LogFile, "==========================================\n");
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fprintf( LogFile, "lpd: LogFileName=%s\n", LogFileName );
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fprintf( LogFile, "built %s %s\n", __DATE__, __TIME__ );
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fprintf( LogFile, "from %s\n", __FILE__ );
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fprintf( LogFile, "==========================================\n");
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}else{
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DbgPrint("lpd: started, built %s %s.\n", __DATE__, __TIME__ );
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}
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return LogFile;
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}
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// ========================================================================
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// Like printf but send output to LogFile if open, else to Debugger.
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// ========================================================================
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static DWORD lasttickflush;
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int
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logit( char * format, ... )
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{
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va_list ap;
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char message[LEN_DbgPrint];
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int message_len;
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DWORD thistick;
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va_start( ap, format );
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message_len = _vsnprintf (message,LEN_DbgPrint, format, ap );
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message[LEN_DbgPrint-1] = '\0';
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va_end( ap );
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// assert( message_len < LEN_DbgPrint );
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if( LogFile ){
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EnterCriticalSection( &csLogit );
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fputs (message, LogFile);
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LeaveCriticalSection( &csLogit );
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// Don't flush more than once a second.
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thistick = GetTickCount();
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if( abs( thistick - lasttickflush ) > 1000 ){
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lasttickflush = thistick;
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fflush( LogFile );
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}
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}else{
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DbgPrint( message );
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}
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return message_len;
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}
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// ========================================================================
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// Closes the log file if open.
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// ========================================================================
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FILE *
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stoplogging( FILE * LogFile )
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{
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if( LogFile ){
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LogTime();
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LOGIT(( "lpd stoplogging\n"));
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fclose( LogFile );
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LogFile = NULL;
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// DeleteCriticalSection( &csLogit );
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}
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DbgPrint( "lpd: stopped logging.\n" );
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return LogFile;
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}
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// ========================================================================
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