Attachment 315854 Details for Bug 461246 – pid sequence check program

pid sequence check program

pidseqchk.c (text/plain), 1.13 KB, created by Martin Poole on 2008-09-05 10:16:45 UTC

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Creator: Martin Poole

Created: 2008-09-05 10:16:45 UTC

Size: 1.13 KB

patch

obsolete

>
>#include <stdio.h>
>#include <time.h>
>#include <errno.h>
>#include <string.h>
>#include <sys/types.h>
>#include <unistd.h>
>#include <sched.h>
>#include <sys/types.h>
>#include <sys/wait.h>
>
>static void
>waitem( pid_t low, pid_t high )
>{
>    do
>    {
>	waitpid( low, NULL, 0 );
>    }while (high > low++);
>    return;
>}
>
>int
>main( int argc, char *argv[] )
>{
>    int i, count = 200000;
>
>    pid_t low = 0, new = 0, last = 0;
>/*    struct timespec nap;
>
>    nap.tv_sec = 0;
>    nap.tv_nsec = 20000000; */
>
>    while( count-- )
>    {
>	new = fork();
>	if (new < 0)
>	{
>	    /* failed */
>	    fprintf( stderr, "fork failed: %d/%s\n", errno, strerror(errno) );
>	    waitem( low, last );
>	}else if( new == 0 )
>	{
>	    /* just die */
>	    return 0;
>	}else
>	{
>	    /* main sequence */
>	    if (low == 0)
>	    {
>		/* first time around, just set things up */
>		low = new;
>	    }else if ( (last+1) != new )
>	    {
>		/* discontinuity */
>		fprintf( stderr, "sequence break:  %d - %d (new %d)\n",
>			low, last, new );
>		waitem( low, last );
>		low = new;
>	    }
>	    last = new;
>	    sched_yield();
>	}
>    }
>    fprintf( stderr, "last sequence:  %d - %\n", low, last );
>    return 0;
>}
>

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Attachments on bug 461246: 315854