The last mail got screwed, I'm resending this for clarity.
/sys/src/libthread/sched.c:
[...]
if(t == nil){
_threaddebug(DBGSCHED, "all threads gone; exiting");
cancelnotes(p->pid);
_schedexit(p);
}
[...]
/sys/src/libthread/note.c
[...]
int
threadnotify(int (*f)(void*, char*), int in)
{
int i, frompid, topid;
int (*from)(void*, char*), (*to)(void*, char*);
if(in && in>-2){
from = nil;
frompid = 0;
to = f;
topid = (in == -1)? -1 : _threadgetproc()->pid;
lock(&onnotelock);
for(i=0; i<NFN; i++)
if(onnote[i]==to && onnotepid[i]==topid){
unlock(&onnotelock);
return i<NFN;
}
unlock(&onnotelock);
}else{
from = f;
frompid = (in < -1)? -1 : _threadgetproc()->pid;
to = nil;
topid = 0;
}
lock(&onnotelock);
for(i=0; i<NFN; i++)
if(onnote[i]==from && onnotepid[i]==frompid){
onnote[i] = to;
onnotepid[i] = topid;
break;
}
unlock(&onnotelock);
return i<NFN;
}
void
cancelnotes(int pid)
{
int i;
lock(&onnotelock);
for(i=0; i<NFN; i++)
if(onnotepid[i] == pid){
onnote[i] = nil;
onnotepid[i] = 0;
}
unlock(&onnotelock);
return;
}
static void
delayednotes(Proc *p, void *v)
{
int i;
Note *n;
int (*fn)(void*, char*);
if(!p->pending)
return;
p->pending = 0;
for(n=notes; n<enotes; n++){
if(n->proc == p){
for(i=0; i<NFN; i++){
if((onnotepid[i]!=p->pid && onnotepid[i]!=-1) ||
(fn = onnote[i])==nil)
continue;
if((*fn)(v, n->s))
break;
[...]
/sys/include/thread.h
[...]
void cancelnotes(int pid);
[...]
------------------------------------------
9fans: 9fans
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