static void fault_test()
{
int status;
(void) printf("-- fault test start\n");
(void) printf("Fault test. If this hangs, check your page fault handler...\n");
(void) printf("Do you properly kill processes that segv? ");
if (!myfork()) {
*(int *)0 = 0;
exit(0);
}
if (wait(&status) == -1) {
(void) printf("wait failed (errno=%d)\n", errno);
exit(1);
}
/* This assumes that killing the process will set the status to
* something other than 0
*/
if (status) {
(void) printf("yes\n");
} else {
(void) printf("no\n");
exit(1);
}
(void) printf("-- fault test passed\n");
}
static void cow_fork()
{
int status;
int foo = 0;
(void) printf("-- COW fork test start\n");
if (!myfork()) {
/* We are in the child process, and should be accessing
* our own memory
*/
foo = 1;
exit(0);
}
if (wait(&status) == -1) {
(void) printf("wait failed (errno=%d)\n", errno);
exit(1);
}
if (foo) {
(void) printf("Data changed in child affected parent.\n"
"Make sure you mark writable private mappings copy-on-write.\n");
(void) printf("Copy-on-write failed.\n");
exit(1);
}
(void) printf("-- COW fork test passed\n");
}
static void fork_test()
{
(void) printf("-- Fork torture test start\n");
(void) printf("The final test: forking up a storm.\n"
"If this doesn't crash your kernel, "
"you might be in good shape\n");
(void) printf("(note that this is running in the background)\n");
if (!myfork()) {
for (;;) {
if (myfork()) {
exit(0);
}
}
}
}
/*VARARGS1*/
int
execute(char *a, ...) /* note: "exec" is already defined on u370 */
{
va_list ap;
int exitcode = -1; /* initialize, to avoid warning */
char *argv[BUFSIZ];
pid_t p;
/* fork and exec the program or shell script */
endwin(); /* restore the terminal modes */
mousecleanup();
fflush(stdout);
va_start(ap, a);
for (p = 0; (argv[p] = va_arg(ap, char *)) != 0; p++)
;
#if !HAVE_FORK
/* HBB 20010313: in MSDOG, everything is completely different.
* No fork()/exec()/wait(), but rather a single libc call: */
exitcode = spawnvp(P_WAIT, a, argv);
#else
if ((p = myfork()) == 0) {
myexecvp(a, argv); /* child */
}
else {
exitcode = join(p); /* parent */
}
#endif /* MSDOS */
/* the menu and scrollbar may be changed by the command executed */
#if UNIXPC || !TERMINFO
# ifndef __DJGPP__ /* leave CRLF handling as is */
nonl();
# endif
raw(); /* endwin() turns off cbreak mode so restore it */
noecho();
#endif
mousemenu();
drawscrollbar(topline, nextline);
va_end(ap);
return(exitcode);
}
int body()
{
char c, CR, buf[64],save;
while(1){
printf("=======================================\n");
printQueue(readyQueue);
printf("proc %d %s in Kmode\n", running->pid, running->name);
printf("input a command (s|f|u|q|i|o) : ");
c=getc(); putc(c); save = c; CR=getc(); putc(CR);
switch(save){
case 's' : tswitch(); break;
case 'u' : printf("\nProc %d ready to go U mode\n", running->pid);
goUmode(); break;
case 'f': myfork(); break;
case 'q' : kexit(); break;
case 'i' : iline(); break;
case 'o' : oline(); break;
}
}
}
void
main(int argc, char *argv[])
{
char *p;
int nout, nproc, status, i, c;
thechar = '2';
thestring = "68020";
memset(debug, 0, sizeof(debug));
cinit();
outfile = 0;
include[ninclude++] = ".";
ARGBEGIN {
default:
c = ARGC();
if(c >= 0 || c < sizeof(debug))
debug[c] = 1;
break;
case 'o':
outfile = ARGF();
break;
case 'D':
p = ARGF();
if(p)
Dlist[nDlist++] = p;
break;
case 'I':
p = ARGF();
setinclude(p);
break;
} ARGEND
if(*argv == 0) {
print("usage: %ca [-options] file.s\n", thechar);
errorexit();
}
if(argc > 1 && systemtype(Windows)){
print("can't assemble multiple files on windows\n");
errorexit();
}
if(argc > 1 && !systemtype(Windows)) {
nproc = 1;
if(p = getenv("NPROC"))
nproc = atol(p); /* */
c = 0;
nout = 0;
for(;;) {
while(nout < nproc && argc > 0) {
i = myfork();
if(i < 0) {
i = mywait(&status);
if(i < 0)
errorexit();
if(status)
c++;
nout--;
continue;
}
if(i == 0) {
print("%s:\n", *argv);
if(assemble(*argv))
errorexit();
exits(0);
}
nout++;
argc--;
argv++;
}
i = mywait(&status);
if(i < 0) {
if(c)
errorexit();
exits(0);
}
if(status)
c++;
nout--;
}
}
if(assemble(argv[0]))
errorexit();
exits(0);
}