Upgrade uasyncio release used in tests
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@@ -99,19 +99,18 @@ class TaskQueue:
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def peek(self):
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return self.heap
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def push_sorted(self, v, key):
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def push(self, v, key=None):
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assert v.ph_child is None
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assert v.ph_next is None
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v.data = None
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v.ph_key = key
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v.ph_child = None
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v.ph_next = None
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v.ph_key = key if key is not None else core.ticks()
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self.heap = ph_meld(v, self.heap)
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def push_head(self, v):
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self.push_sorted(v, core.ticks())
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def pop_head(self):
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def pop(self):
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v = self.heap
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self.heap = ph_pairing(self.heap.ph_child)
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assert v.ph_next is None
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self.heap = ph_pairing(v.ph_child)
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v.ph_child = None
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return v
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def remove(self, v):
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@@ -123,6 +122,7 @@ class Task:
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def __init__(self, coro, globals=None):
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self.coro = coro # Coroutine of this Task
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self.data = None # General data for queue it is waiting on
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self.state = True # None, False, True, a callable, or a TaskQueue instance
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self.ph_key = 0 # Pairing heap
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self.ph_child = None # Paring heap
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self.ph_child_last = None # Paring heap
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@@ -130,30 +130,33 @@ class Task:
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self.ph_rightmost_parent = None # Paring heap
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def __iter__(self):
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if self.coro is self:
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# Signal that the completed-task has been await'ed on.
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self.waiting = None
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elif not hasattr(self, "waiting"):
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# Lazily allocated head of linked list of Tasks waiting on completion of this task.
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self.waiting = TaskQueue()
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if not self.state:
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# Task finished, signal that is has been await'ed on.
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self.state = False
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elif self.state is True:
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# Allocated head of linked list of Tasks waiting on completion of this task.
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self.state = TaskQueue()
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elif type(self.state) is not TaskQueue:
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# Task has state used for another purpose, so can't also wait on it.
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raise RuntimeError("can't wait")
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return self
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def __next__(self):
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if self.coro is self:
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if not self.state:
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# Task finished, raise return value to caller so it can continue.
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raise self.data
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else:
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# Put calling task on waiting queue.
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self.waiting.push_head(core.cur_task)
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self.state.push(core.cur_task)
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# Set calling task's data to this task that it waits on, to double-link it.
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core.cur_task.data = self
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def done(self):
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return self.coro is self
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return not self.state
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def cancel(self):
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# Check if task is already finished.
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if self.coro is self:
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if not self.state:
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return False
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# Can't cancel self (not supported yet).
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if self is core.cur_task:
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@@ -165,20 +168,10 @@ class Task:
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if hasattr(self.data, "remove"):
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# Not on the main running queue, remove the task from the queue it's on.
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self.data.remove(self)
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core._task_queue.push_head(self)
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core._task_queue.push(self)
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elif core.ticks_diff(self.ph_key, core.ticks()) > 0:
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# On the main running queue but scheduled in the future, so bring it forward to now.
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core._task_queue.remove(self)
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core._task_queue.push_head(self)
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core._task_queue.push(self)
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self.data = core.CancelledError
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return True
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def throw(self, value):
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# This task raised an exception which was uncaught; handle that now.
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# Set the data because it was cleared by the main scheduling loop.
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self.data = value
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if not hasattr(self, "waiting"):
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# Nothing await'ed on the task so call the exception handler.
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core._exc_context["exception"] = value
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core._exc_context["future"] = self
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core.Loop.call_exception_handler(core._exc_context)
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