1 #include <u.h>
2 #include <signal.h>
3 #include "threadimpl.h"
4 
5 char *_threadexitsallstatus;
6 Channel *_threadwaitchan;
7 
8 void
9 threadexits(char *exitstr)
10 {
11 	Proc *p;
12 	Thread *t;
13 
14 	p = _threadgetproc();
15 	t = p->thread;
16 	if(t == p->idle)
17 		p->idle = nil;
18 	t->moribund = 1;
19 	_threaddebug(DBGSCHED, "threadexits %s", exitstr);
20 	if(exitstr==nil)
21 		exitstr="";
22 	utfecpy(p->exitstr, p->exitstr+ERRMAX, exitstr);
23 	_sched();
24 }
25 
26 void
27 threadexitsall(char *exitstr)
28 {
29 	Proc *p;
30 	int *pid;
31 	int i, npid, mypid;
32 
33 	_threaddebug(DBGSCHED, "threadexitsall %s", exitstr);
34 	if(exitstr == nil)
35 		exitstr = "";
36 	_threadexitsallstatus = exitstr;
37 	_threaddebug(DBGSCHED, "_threadexitsallstatus set to %p", _threadexitsallstatus);
38 	mypid = _threadgetpid();
39 
40 	/*
41 	 * signal others.
42 	 * copying all the pids first avoids other thread's
43 	 * teardown procedures getting in the way.
44 	 */
45 	lock(&_threadpq.lock);
46 	npid = 0;
47 	for(p=_threadpq.head; p; p=p->next)
48 		npid++;
49 	pid = _threadmalloc(npid*sizeof(pid[0]), 0);
50 	npid = 0;
51 	for(p = _threadpq.head; p; p=p->next)
52 		pid[npid++] = p->pid;
53 	unlock(&_threadpq.lock);
54 	for(i=0; i<npid; i++){
55 		_threaddebug(DBGSCHED, "threadexitsall kill %d", pid[i]);
56 		if(pid[i]==0 || pid[i]==-1)
57 			fprint(2, "bad pid in threadexitsall: %d\n", pid[i]);
58 		else if(pid[i] != mypid){
59 			kill(pid[i], SIGTERM);
60 		}
61 	}
62 
63 	/* leave */
64 	exit(0);
65 }
66 
67 Channel*
68 threadwaitchan(void)
69 {
70 	if(_threadwaitchan==nil)
71 		_threadwaitchan = chancreate(sizeof(Waitmsg*), 16);
72 	return _threadwaitchan;
73 }