From a3785ca2cc1c8693d89ebe44216acf781a634718 Mon Sep 17 00:00:00 2001 From: rsc Date: Wed, 21 Apr 2004 19:29:04 +0000 Subject: Tweaks to make libthread tell Valgrind about its stack limits, so that Valgrind can detect stack overflow for me. --- src/libthread/sched.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'src/libthread/sched.c') diff --git a/src/libthread/sched.c b/src/libthread/sched.c index d193d6ce..57d597ba 100644 --- a/src/libthread/sched.c +++ b/src/libthread/sched.c @@ -166,14 +166,15 @@ Resched: p = _threadgetproc(); //fprint(2, "p %p\n", p); if((t = p->thread) != nil){ - if((ulong)&p < (ulong)t->stk){ /* stack overflow */ - fprint(2, "stack overflow %lux %lux\n", (ulong)&p, (ulong)t->stk); + if((ulong)&p < (ulong)t->stk+512){ /* stack overflow waiting to happen */ + fprint(2, "stack overflow: stack at %lux, limit at %lux\n", (ulong)&p, (ulong)t->stk); abort(); } // _threaddebug(DBGSCHED, "pausing, state=%s set %p goto %p", // psstate(t->state), &t->sched, &p->sched); if(_setlabel(&t->sched)==0) _gotolabel(&p->sched); + _threadstacklimit(t->stk); return; }else{ t = runthread(p); -- cgit v1.2.3