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Add clarifying comment to cancellation handling in rendezvous.cc.

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PiperOrigin-RevId: 266939120
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Derek Murray 2019-09-03 08:55:14 -07:00 committed by TensorFlower Gardener
parent 993bf65062
commit 3904672376
1 changed files with 3 additions and 0 deletions
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tensorflow/core/framework/rendezvous.cc
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@ -266,6 +266,9 @@ class LocalRendezvousImpl : public Rendezvous {
Item* item = new Item; Item* item = new Item;
if (cm != nullptr) { if (cm != nullptr) {
// NOTE(mrry): We must wrap `done` with code that deregisters the
// cancellation callback before calling the `done` callback, because the
// cancellation manager may no longer be live after `done` is called.
auto wrapped_done = std::bind( auto wrapped_done = std::bind(
[cm, token](const DoneCallback& done, [cm, token](const DoneCallback& done,
// Begin unbound arguments. // Begin unbound arguments.