def _on_tick_(timer):
ec = core.get_ec()
self = ec.handles.get(timer, Timer)
try:
Event_dispatch(self.on_tick, [])
except Unwinder as unwinder:
core.root_unwind(ec, unwinder)
def _on_close_(handle):
ec = core.get_ec()
self = ec.handles.free(handle)
self.closed = True
try:
Event_dispatch(self.on_close, [])
for event in self.events:
Event_close(event)
except Unwinder as unwinder:
core.root_unwind(unwinder)
def invoke_callback(ffi_cif, ll_res, ll_args, ll_userdata):
""" Callback specification.
ffi_cif - something ffi specific, don't care
ll_args - rffi.VOIDPP - pointer to array of pointers to args
ll_res - rffi.VOIDP - pointer to result
ll_userdata - a special structure which holds necessary information
(what the real callback is for example), casted to VOIDP
"""
# Reveal the callback.
addr = rffi.cast(llmemory.Address, ll_userdata)
gcref = rgc.reveal_gcref(addr)
callback = rgc.try_cast_gcref_to_instance(Callback, gcref)
if callback is None:
try:
os.write(STDERR,
"Critical error: invoking a callback that was already freed\n")
except:
pass
# We cannot do anything here.
else:
#must_leave = False
try:
# must_leave = space.threadlocals.try_enter_thread(space)
# Should check for separate threads here and crash
# if the callback comes from a thread that has no execution context.
cfunc = callback.cfunc
argv = []
for i in range(0, len(cfunc.argtypes)):
argv.append( cfunc.argtypes[i].load(ll_args[i], False) )
value = callback.callback.call(argv)
if isinstance(cfunc.restype, Type):
cfunc.restype.store(None, ll_res, value)
except Unwinder as unwinder:
core.root_unwind(unwinder)
except Exception as e:
try:
os.write(STDERR, "SystemError: callback raised ")
os.write(STDERR, str(e))
os.write(STDERR, "\n")
except:
pass
def _fs_event_cb_(handle, filename, events, status):
ec = core.get_ec()
try:
self = uv_callback.peek(ec.uv__fs_event, handle)
status = rffi.r_long(status)
if self.status == 0 and status < 0:
uv_callback.drop(ec.uv__fs_event, handle)
self.status = status
return
obj = Exnihilo()
obj.setattr(u"path", from_cstring(rffi.charp2str(filename)))
if rffi.r_long(events) == 1:
obj.setattr(u"type", String(u"rename"))
else:
obj.setattr(u"type", String(u"change"))
if self.greenlet is None:
self.data.append(obj)
else:
greenlet, self.greenlet = self.greenlet, None
core.switch([greenlet, obj])
except Unwinder as unwinder:
core.root_unwind(ec, unwinder)