// Print all currently active panics. Used when crashing.
static void
printpanics(Panic *p)
{
if(p->link) {
printpanics(p->link);
runtime·printf("\t");
}
runtime·printf("panic: ");
runtime·printany(p->arg);
if(p->recovered)
runtime·printf(" [recovered]");
runtime·printf("\n");
}
// The implementation of the predeclared function panic.
void
runtime·panic(Eface e)
{
Defer *d;
Panic *p;
void *pc, *argp;
p = runtime·mal(sizeof *p);
p->arg = e;
p->link = g->panic;
p->stackbase = g->stackbase;
g->panic = p;
for(;;) {
d = g->defer;
if(d == nil)
break;
// take defer off list in case of recursive panic
g->defer = d->link;
g->ispanic = true; // rock for newstack, where reflect.newstackcall ends up
argp = d->argp;
pc = d->pc;
runtime·newstackcall(d->fn, (byte*)d->args, d->siz);
freedefer(d);
if(p->recovered) {
g->panic = p->link;
if(g->panic == nil) // must be done with signal
g->sig = 0;
runtime·free(p);
// Pass information about recovering frame to recovery.
g->sigcode0 = (uintptr)argp;
g->sigcode1 = (uintptr)pc;
runtime·mcall(recovery);
runtime·throw("recovery failed"); // mcall should not return
}
}
// ran out of deferred calls - old-school panic now
runtime·startpanic();
printpanics(g->panic);
runtime·dopanic(0);
}
// The implementation of the predeclared function panic.
void
runtime·panic(Eface e)
{
Defer *d;
Panic *p;
p = runtime·mal(sizeof *p);
p->arg = e;
p->link = g->panic;
p->stackbase = g->stackbase;
g->panic = p;
for(;;) {
d = g->defer;
if(d == nil)
break;
// take defer off list in case of recursive panic
g->defer = d->link;
g->ispanic = true; // rock for newstack, where reflect.call ends up
reflect·call(d->fn, d->args, d->siz);
if(p->recovered) {
g->panic = p->link;
if(g->panic == nil) // must be done with signal
g->sig = 0;
runtime·free(p);
// put recovering defer back on list
// for scheduler to find.
d->link = g->defer;
g->defer = d;
runtime·mcall(recovery);
runtime·throw("recovery failed"); // mcall should not return
}
if(!d->nofree)
runtime·free(d);
}
// ran out of deferred calls - old-school panic now
runtime·startpanic();
printpanics(g->panic);
runtime·dopanic(0);
}
