list_17_11.c

来自「This source code has been tested under O」· C语言 代码 · 共 70 行

/***********************************************************************
**                                                                    **
**  listing_17_11.c                                                   **
**                                                                    **
**  Workproc example. This program presents a simple label, just to   **
**  provide a window. Its real operation is a workproc, which counts  **
**  the number of times it's called each second, and prints both the  **
**  immediate count and an average.                                   **
**                                                                    **
***********************************************************************/


#include <Xm/Label.h>


Boolean	WorkProc();			/* FORWARD Definitions	      */


Widget	appshell,
	the_label;


void main( argc, argv )
    int     argc;
    char    *argv[];
{
    appshell = XtInitialize( argv[0], "Listing_17_11", NULL, 0, &argc, argv );

    the_label = XmCreateLabel( appshell, "TheLabel", NULL, 0 );
    XtManageChild( the_label );

    XtAddWorkProc( WorkProc, NULL );

    XtRealizeWidget( appshell );
    XtMainLoop();
}



Boolean WorkProc( ignore )
    caddr_t	ignore;
{
    static int	tot_calls = 0,		/* Total calls                */
		tot_time  = 0,		/* Total time running	      */
                calls_sec = 0,          /* Calls this second          */
		last_time = 0;          /* Time of last call          */
    int		this_time = time(NULL);

    if (last_time == 0)
        last_time = this_time;
    else if (last_time == this_time)
 	{
	tot_calls++;
	calls_sec++;
	}
    else
	{
	tot_time++;

	printf( "Second %d\n", tot_time );
	printf( "   Calls     = %6d\n", calls_sec );
	printf( "   Avg Calls = %6.1f\n", ((float)tot_calls)/tot_time );

	calls_sec = 0;
	last_time = this_time;
	}

    return( FALSE );
}