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/** @file 410user/progs/slaughter.c
* @author mtelgars
* @author nwf
* @brief Runs a lot of copies of a given test.
* @public yes
* @for p3
* @covers fork exec wait set_status vanish
* @status done
*/
#include <syscall.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include "410_tests.h"
#include <report.h>
DEF_TEST_NAME("slaughter:");
unsigned int width;
int initial_tid;
int exit_status;
void __attribute__((noreturn)) slaughter(char **argv, unsigned int depth)
{
int curtid = gettid();
report_start(START_CMPLT);
if ( ! depth )
{
if (exec(argv[0], argv))
{
lprintf("=====> exec failed from %d!", curtid);
exit(-373);
}
}
else
{
unsigned int i, j, matched;
int threads[2*width]; /* not doing anything smart here yet.. */
int status, tid;
for (i = 0; i != 2*width; ++i)
{
if ( ! (threads[i] = fork()) )
{
/* alternate immediate exec and slaughter */
slaughter(argv, (i % 2) * (depth - 1));
}
else if (threads[i] < 0) {
lprintf("=====> XXX tid %d could not fork (err=%d)!!",
curtid,threads[i]);
report_end(END_FAIL);
exit(exit_status+1);
}
else
{
lprintf("=====> Slaugher created TID %d from TID %d",
threads[i], curtid);
}
}
for (i = 0; i != 2*width; ++i)
{
tid = wait(&status);
if ( tid < 0 )
{
lprintf("=====> XXX Wait failed in TID %d with %d; bombing out",
curtid, tid );
report_end(END_FAIL);
exit(exit_status+3);
}
else
{
matched = 0;
for ( j = 0; j != 2*width; ++j )
{
if ( threads[j] == tid )
{
matched = 1;
threads[j] = -1;
break;
}
}
if ( matched == 0 )
{
lprintf("=====> XXX Wait returned bad TID %d to TID %d; bombing out",
tid, curtid );
report_end(END_FAIL);
exit(exit_status+5);
}
lprintf("=====> %stid %d gave %svalid status code of %d to tid %d",
(status == exit_status) ? "" : "XXX ",
tid, (status == exit_status) ? "" : "IN", status, curtid);
if ( status != exit_status )
{
report_end(END_FAIL);
exit(exit_status+7);
}
}
}
}
lprintf("=====> Slaughterer %d completed", curtid);
report_end(END_SUCCESS);
exit(exit_status);
}
int main(int argc, char *argv[])
{
unsigned int initial_depth;
char *default_vec[] = { "print_basic", NULL };
char **command_vec;
if (argc < 5)
{
printf("slaughter <recursive depth> "
"<recursive width> <exit status> <command line>\n");
initial_depth = 2;
width = 2;
exit_status = 0;
command_vec = default_vec;
printf(" DEFAULTING TO: %d %d %d %s\n", initial_depth, width, exit_status, command_vec[0]);
}
else if ( ! (width = strtoul(argv[1], NULL, 10)) )
{
printf(" bad recursive width\n");
return -2;
}
else if ( ! (initial_depth = strtoul(argv[2], NULL, 10)) )
{
printf(" bad recursive depth\n");
return -3;
}
else
{
exit_status = strtol(argv[3], NULL, 10);
command_vec = &argv[4];
}
slaughter(command_vec, initial_depth);
return 0;
}
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