/* wait till none of the processes in the stack starting at k is live */
int
waitstack(int k)
{
int npending, status, totstatus;
int i;
totstatus = 0;
npending = 0;
for(i=k ; i<nproc; ++i)
if(! procstack[i].done)
++npending;
enbint(SIG_IGN);
if(dbgflag > 1)
printf("waitstack(%d)\n", k);
while(npending>0 && proclive>0)
{
if(waitproc(&status) >= k)
--npending;
totstatus |= status;
}
if(nproc > k)
nproc = k;
enbint(intrupt);
return totstatus;
}
static int
doexec(char *str)
{
char *t, *tend;
char **argv;
char **p;
int nargs;
pid_t pid;
while( *str==' ' || *str=='\t' )
++str;
if( *str == '\0' )
return(-1); /* no command */
nargs = 1;
for(t = str ; *t ; )
{
++nargs;
while(*t!=' ' && *t!='\t' && *t!='\0')
++t;
if(*t) /* replace first white space with \0, skip rest */
for( *t++ = '\0' ; *t==' ' || *t=='\t' ; ++t)
;
}
/* now allocate args array, copy pointer to start of each string,
then terminate array with a null
*/
p = argv = (char **) ckalloc(nargs*sizeof(char *));
tend = t;
for(t = str ; t<tend ; )
{
*p++ = t;
while( *t )
++t;
do {
++t;
} while(t<tend && (*t==' ' || *t=='\t') );
}
*p = NULL;
/*TEMP for(p=argv; *p; ++p)printf("arg=%s\n", *p);*/
if((pid = fork()) == 0)
{
enbint(SIG_DFL);
doclose();
enbint(intrupt);
execvp(str, argv);
printf("\n");
fatal1("Cannot load %s",str);
}
free( (char *) argv);
return pid;
}
int
dosys(char *comstring, int nohalt, int nowait, char *prefix)
{
int status;
struct process *procp;
/* make sure there is room in the process stack */
if(nproc >= MAXPROC)
waitstack(MAXPROC-1);
/* make sure fewer than proclimit processes are running */
while(proclive >= proclimit)
{
enbint(SIG_IGN);
waitproc(&status);
enbint(intrupt);
}
if(prefix)
{
fputs(prefix, stdout);
fputs(comstring, stdout);
}
procp = procstack + nproc;
procp->pid = (forceshell || metas(comstring) ) ?
doshell(comstring,nohalt) : doexec(comstring);
if(procp->pid == -1)
fatal("fork failed");
procstack[nproc].nohalt = nohalt;
procstack[nproc].nowait = nowait;
procstack[nproc].done = NO;
++proclive;
++nproc;
if(nowait)
{
printf(" &%d\n", procp->pid);
fflush(stdout);
return 0;
}
if(prefix)
{
putchar('\n');
fflush(stdout);
}
return waitstack(nproc-1);
}
static int
await(int wait_pid)
{
int w, status;
enbint(SIG_IGN);
while ( (w = wait(&status)) != wait_pid)
if(w == -1)
fatal1("bad wait code");
enbint(intrupt);
if(status & 0377)
{
if(status != SIGINT)
fprintf(diagfile, "Termination code %d", status);
done(3);
}
return(status>>8);
}
static int
doshell(char *comstring, int nohalt)
{
pid_t pid;
if((pid = fork()) == 0)
{
enbint(SIG_DFL);
doclose();
execl(SHELLCOM, "sh", (nohalt ? "-c" : "-ce"), comstring, NULL);
fatal("Couldn't load Shell");
}
return pid;
}
static int
sys(char *str)
{
char *s, *t;
char *argv[100], path[100];
char *inname, *outname;
int append = 0;
int wait_pid;
int argc;
if(debugflag)
fprintf(diagfile, "%s\n", str);
inname = NULL;
outname = NULL;
argv[0] = shellname;
argc = 1;
t = str;
while( isspace((int)*t) )
++t;
while(*t) {
if(*t == '<')
inname = t+1;
else if(*t == '>') {
if(t[1] == '>') {
append = YES;
outname = t+2;
} else {
append = NO;
outname = t+1;
}
} else
argv[argc++] = t;
while( !isspace((int)*t) && *t!='\0' )
++t;
if(*t) {
*t++ = '\0';
while( isspace((int)*t) )
++t;
}
}
if(argc == 1) /* no command */
return(-1);
argv[argc] = 0;
s = path;
t = "/usr/bin/";
while(*t)
*s++ = *t++;
for(t = argv[1] ; (*s++ = *t++) ; )
;
if((wait_pid = fork()) == 0) {
if(inname)
freopen(inname, "r", stdin);
if(outname)
freopen(outname, (append ? "a" : "w"), stdout);
enbint(SIG_DFL);
texec(path+9, argv); /* command */
texec(path+4, argv); /* /bin/command */
texec(path , argv); /* /usr/bin/command */
fatal1("Cannot load %s",path+9);
}
return( await(wait_pid) );
}
int
main(int argc, char **argv)
{
int i, c, status;
char *s;
char fortfile[20], *t;
char buff[100];
diagfile = stderr;
sigivalue = (int) signal(SIGINT, SIG_IGN) & 01;
sigqvalue = (int) signal(SIGQUIT, SIG_IGN) & 01;
enbint(intrupt);
pid = getpid();
crfnames();
loadargs = (char **)calloc(1, (argc + 20) * sizeof(*loadargs));
if (!loadargs)
fatal1("out of memory");
loadp = loadargs;
--argc;
++argv;
while(argc>0 && argv[0][0]=='-' && argv[0][1]!='\0') {
for(s = argv[0]+1 ; *s ; ++s)
switch(*s) {
case 'T': /* use special passes */
switch(*++s) {
case '1':
fcom = s+1; goto endfor;
case 'a':
asmname = s+1; goto endfor;
case 'l':
ldname = s+1; goto endfor;
case 'm':
macroname = s+1; goto endfor;
default:
fatal1("bad option -T%c", *s);
}
break;
case 'w': /* F66 warn or no warn */
addarg(ffary, &ffmax, s-1);
break;
case 'q':
/*
* Suppress printing of procedure names during
* compilation.
*/
addarg(ffary, &ffmax, s-1);
break;
copyfflag:
case 'u':
case 'U':
case 'M':
case '1':
case 'C':
addarg(ffary, &ffmax, s-1);
break;
case 'O':
optimflag = YES;
addarg(ffary, &ffmax, s-1);
break;
case 'm':
if(s[1] == '4')
++s;
macroflag = YES;
break;
case 'S':
saveasmflag = YES;
case 'c':
loadflag = NO;
break;
case 'v':
verbose = YES;
break;
case 'd':
debugflag = YES;
goto copyfflag;
case 'p':
profileflag = YES;
goto copyfflag;
case 'o':
if(!strcmp(s, "onetrip")) {
addarg(ffary, &ffmax, s-1);
goto endfor;
}
oflag = 1;
aoutname = *++argv;
--argc;
break;
case 'F':
fortonly = YES;
loadflag = NO;
break;
case 'I':
if(s[1]=='2' || s[1]=='4' || s[1]=='s')
goto copyfflag;
fprintf(diagfile, "invalid flag -I%c\n", s[1]);
done(1);
case 'l': /* letter ell--library */
s[-1] = '-';
*loadp++ = s-1;
goto endfor;
case 'E': /* EFL flag argument */
while(( *eflagp++ = *++s))
;
*eflagp++ = ' ';
goto endfor;
case 'R':
while(( *rflagp++ = *++s ))
;
*rflagp++ = ' ';
goto endfor;
default:
lflag[1] = *s;
*loadp++ = copyn(strlen(lflag), lflag);
break;
}
endfor:
--argc;
++argv;
}
if (verbose)
fprintf(stderr, xxxvers);
if (argc == 0)
errorx("No input files");
#ifdef mach_pdp11
if(nofloating)
*loadp++ = (profileflag ? NOFLPROF : NOFLFOOT);
else
#endif
for(i = 0 ; i<argc ; ++i)
switch(c = dotchar(infname = argv[i]) ) {
case 'r': /* Ratfor file */
case 'e': /* EFL file */
if( unreadable(argv[i]) )
break;
s = fortfile;
t = lastfield(argv[i]);
while(( *s++ = *t++))
;
s[-2] = 'f';
if(macroflag) {
snprintf(buff, sizeof(buff), "%s %s >%s",
macroname, infname, prepfname);
if(sys(buff)) {
rmf(prepfname);
break;
}
infname = prepfname;
}
if(c == 'e')
snprintf(buff, sizeof(buff), "efl %s %s >%s",
eflags, infname, fortfile);
else
snprintf(buff, sizeof(buff), "ratfor %s %s >%s",
rflags, infname, fortfile);
status = sys(buff);
if(macroflag)
rmf(infname);
if(status) {
loadflag = NO;
rmf(fortfile);
break;
}
if( ! fortonly ) {
infname = argv[i] = lastfield(argv[i]);
*lastchar(infname) = 'f';
if( dofort(argv[i]) )
loadflag = NO;
else {
if( nodup(t = setdoto(argv[i])) )
*loadp++ = t;
rmf(fortfile);
}
}
break;
case 'f': /* Fortran file */
case 'F':
if( unreadable(argv[i]) )
break;
if( dofort(argv[i]) )
loadflag = NO;
else if( nodup(t=setdoto(argv[i])) )
*loadp++ = t;
break;
case 'c': /* C file */
case 's': /* Assembler file */
if( unreadable(argv[i]) )
break;
fprintf(diagfile, "%s:\n", argv[i]);
snprintf(buff, sizeof(buff), "cc -c %s", argv[i]);
if( sys(buff) )
loadflag = NO;
else
if( nodup(t = setdoto(argv[i])) )
*loadp++ = t;
break;
case 'o':
if( nodup(argv[i]) )
*loadp++ = argv[i];
break;
default:
if( ! strcmp(argv[i], "-o") )
aoutname = argv[++i];
else
*loadp++ = argv[i];
break;
}
if(loadflag)
doload(loadargs, loadp);
done(0);
return 0;
}