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make -> mk

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remove clumsy stack hack.
fix exec.
fix nthreads maintenance.
fix threadexitsall not to kill self.
add sun support.
This commit is contained in:
rsc 2003-11-23 18:18:00 +00:00
parent b7e6f4150f
commit cd7ddc9b5f
10 changed files with 105 additions and 116 deletions
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11
src/libthread/exec-unix.c
View file

@ -9,11 +9,13 @@ procexec(Channel *pidc, char *prog, char *args[])
Proc *p;
Thread *t;
print("procexec\n");
_threaddebug(DBGEXEC, "procexec %s", prog);
/* must be only thread in proc */
p = _threadgetproc();
t = p->thread;
if(p->threads.head != t || p->threads.head->nextt != nil){
print("not only thread\n");
werrstr("not only thread in proc");
Bad:
if(pidc)
@ -34,26 +36,35 @@ procexec(Channel *pidc, char *prog, char *args[])
* pipe to us.
*/
if(pipe(p->exec.fd) < 0)
{
print("pipe\n");
goto Bad;
}
if(fcntl(p->exec.fd[1], F_SETFD, 1) < 0)
{
print("fcntl\n");
goto Bad;
}
/* exec in parallel via the scheduler */
assert(p->needexec==0);
p->exec.prog = prog;
p->exec.args = args;
p->needexec = 1;
print("sched\n");
_sched();
close(p->exec.fd[1]);
if((n = read(p->exec.fd[0], p->exitstr, ERRMAX-1)) > 0){ /* exec failed */
p->exitstr[n] = '\0';
print("read got %s\n", p->exitstr);
errstr(p->exitstr, ERRMAX);
close(p->exec.fd[0]);
goto Bad;
}
close(p->exec.fd[0]);
print("exec %d\n", pidc);
if(pidc)
sendul(pidc, t->ret);