void Fiber::start_on_stack() {
#ifdef FIBER_ENABLED
VM* state = VM::current();
Fiber* fib = Fiber::current(state);
// Affix this fiber to this thread now.
fib->state_ = state;
fib->starter()->send(state, NULL, G(sym_call));
// GC has run! Don't use stack vars!
fib = Fiber::current(state);
fib->status_ = Fiber::eDead;
Fiber* dest = fib->prev();
assert(!dest->nil_p());
dest->run();
dest->value(state, Qnil);
state->set_current_fiber(dest);
if(setcontext(dest->ucontext()) != 0)
assert(0 && "fatal swapcontext() error");
assert(0 && "fatal start_on_stack error");
#else
abort();
#endif
}
void Fiber::start_on_stack() {
#ifdef RBX_FIBER_ENABLED
VM* vm = VM::current();
State state_obj(vm), *state = &state_obj;
Fiber* fib = Fiber::current(state);
// Reset the current fiber again to reset the stack limits so
// we can properly detect stack overflows
vm->set_current_fiber(fib);
Array* result = nil<Array>();
Object* obj = fib->starter()->send(state, G(sym_call), fib->value(), cNil, false);
// GC has run! Don't use stack vars!
fib = Fiber::current(state);
fib->status(Fiber::eDead);
fib->dead(cTrue);
fib->set_call_frame(state, 0);
Fiber* dest = fib->prev();
// If this fiber has already been cleaned up, just ignore this
if(!dest->data()) return;
assert(!dest->nil_p());
// Box this up so it's in a standard format at the point
// of returning, so we can deal with it in the same way
// as *args from #yield, #resume, and #transfer
if(obj) {
result = Array::create(state, 1);
result->set(state, 0, obj);
} else {
if(state->vm()->thread_state()->raise_reason() == cException) {
dest->exception(state, state->vm()->thread_state()->current_exception());
}
}
vm->metrics().system.fibers_destroyed++;
dest->run(state);
dest->value(state, result);
dest->data()->switch_and_orphan(state, fib->data());
// TODO: CallFrame: return from this function
rubinius::bug("returning from Fiber::start_on_stack");
#else
rubinius::bug("Fibers not supported on this platform");
#endif
}
void Fiber::start_on_stack() {
#ifdef RBX_FIBER_ENABLED
VM* vm = VM::current();
State state(vm);
Fiber* fib = Fiber::current(&state);
// Reset the current fiber again to reset the stack limits so
// we can properly detect stack overflows
vm->set_current_fiber(fib);
Array* result = nil<Array>();
Object* obj = fib->starter()->send(&state, NULL, state.globals().sym_call.get(), fib->value(), cNil, false);
// GC has run! Don't use stack vars!
fib = Fiber::current(&state);
fib->status_ = Fiber::eDead;
fib->dead_ = cTrue;
Fiber* dest = fib->prev();
// If this fiber has already been cleaned up, just ignore this
if(!dest->data()) return;
assert(!dest->nil_p());
// Box this up so it's in a standard format at the point
// of returning, so we can deal with it in the same way
// as *args from #yield, #resume, and #transfer
if(obj) {
result = Array::create(&state, 1);
result->set(&state, 0, obj);
} else {
if(state.vm()->thread_state()->raise_reason() == cException) {
dest->exception(&state, state.vm()->thread_state()->current_exception());
}
}
dest->run();
dest->value(&state, result);
state.vm()->set_current_fiber(dest);
dest->data_->switch_and_orphan(&state, fib->data_);
assert(0 && "fatal start_on_stack error");
#else
rubinius::bug("Fibers not supported on this platform");
#endif
}
Fiber* Fiber::create(STATE, Object* self, Object* callable) {
#ifdef RBX_FIBER_ENABLED
Fiber* fib = state->new_object<Fiber>(as<Class>(self));
fib->starter(state, callable);
fib->prev(state, nil<Fiber>());
fib->locals(state, nil<LookupTable>());
fib->root_ = false;
fib->status_ = Fiber::eSleeping;
fib->data_ = 0;
state->memory()->needs_finalization(fib, (FinalizerFunction)&Fiber::finalize);
return fib;
#else
return static_cast<Fiber*>(Primitives::failure());
#endif
}
void Fiber::start_on_stack() {
#ifdef FIBER_ENABLED
VM* state = VM::current();
Fiber* fib = Fiber::current(state);
// Affix this fiber to this thread now.
fib->state_ = state;
Array* result = (Array*)Qnil;
Object* obj = fib->starter()->send(state, NULL, G(sym_call), fib->value(), Qnil, false);
// GC has run! Don't use stack vars!
fib = Fiber::current(state);
fib->status_ = Fiber::eDead;
fib->set_ivar(state, state->symbol("@dead"), Qtrue);
Fiber* dest = fib->prev();
assert(!dest->nil_p());
// Box this up so it's in a standard format at the point
// of returning, so we can deal with it in the same way
// as *args from #yield, #resume, and #transfer
if(obj) {
result = Array::create(state, 1);
result->set(state, 0, obj);
} else {
if(state->thread_state()->raise_reason() == cException) {
dest->exception(state, state->thread_state()->current_exception());
}
}
dest->run();
dest->value(state, result);
state->set_current_fiber(dest);
if(setcontext(dest->ucontext()) != 0)
assert(0 && "fatal swapcontext() error");
assert(0 && "fatal start_on_stack error");
#else
abort();
#endif
}
Fiber* Fiber::create(STATE, Object* self, Object* stack_size, Object* callable) {
#ifdef RBX_FIBER_ENABLED
Fiber* fib = state->memory()->new_object<Fiber>(state, as<Class>(self));
fib->starter(state, callable);
if(Fixnum* size = try_as<Fixnum>(stack_size)) {
state->vm()->validate_stack_size(state, size->to_native());
fib->stack_size(state, size);
}
state->vm()->metrics().system.fibers_created++;
state->memory()->native_finalizer(state, fib,
(memory::FinalizerFunction)&Fiber::finalize);
return fib;
#else
Exception::raise_not_implemented_error(state, "Fibers not supported on this platform");
#endif
}
Fiber* Fiber::create(STATE, Integer* i_stack_size, Object* callable) {
#ifdef FIBER_ENABLED
int stack_size = i_stack_size->to_native();
if(stack_size < 64 * 1024) {
stack_size = 64 * 1024;
}
Fiber* fib = state->new_object<Fiber>(G(fiber));
fib->starter(state, callable);
fib->prev_ = (Fiber*)Qnil;
fib->top_ = 0;
fib->root_ = false;
fib->state_ = 0;
fib->status_ = Fiber::eSleeping;
fib->stack_size_ = stack_size;
fib->stack_ = malloc(stack_size);
fib->context_ = new ucontext_t;
state->om->needs_finalization(fib, (FinalizerFunction)&Fiber::finalize);
ucontext_t* ctx = fib->ucontext();
if(getcontext(ctx) != 0) assert(0 && "fatal getcontext() error");
ctx->uc_link = 0;
ctx->uc_stack.ss_sp = (char *) fib->stack_;
ctx->uc_stack.ss_size = stack_size;
ctx->uc_stack.ss_flags = 0;
makecontext(ctx, start_on_stack, 0);
return fib;
#else
return reinterpret_cast<Fiber*>(Primitives::failure());
#endif
}
