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feat(hotkey): add thread_safe method to clear collector #640

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merged 2 commits into from
Nov 10, 2020

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Smityz
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@Smityz Smityz commented Nov 7, 2020

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@@ -332,5 +339,12 @@ void hotkey_fine_data_collector::analyse_data(detect_hotkey_result &result)
}
}

void hotkey_fine_data_collector::clear()
{
std::pair<dsn::blob, uint64_t> key_weight_pair;
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what about change it like this?

    moodycamel::ConcurrentQueue<std::pair<dsn::blob, uint64_t>> temp;
    _capture_key_queue.swap(temp);

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@Smityz Smityz Nov 9, 2020

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concurrentqueue.h:890
	// Swaps this queue's state with the other's. Not thread-safe.
	// Swapping two queues does not invalidate their tokens, however
	// the tokens that were created for one queue must be used with
	// only the swapped queue (i.e. the tokens are tied to the
	// queue's movable state, not the object itself).

It's not a thread safe way

@@ -102,6 +102,7 @@ class internal_collector_base : public dsn::replication::replica_base
explicit internal_collector_base(replica_base *base) : replica_base(base){};
virtual void capture_data(const dsn::blob &hash_key, uint64_t weight) = 0;
virtual void analyse_data(detect_hotkey_result &result) = 0;
virtual void clear() = 0;
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Where you call this function?

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@Smityz Smityz requested a review from levy5307 November 10, 2020 03:33
@neverchanje neverchanje merged commit 7011500 into apache:master Nov 10, 2020
@neverchanje neverchanje mentioned this pull request Mar 1, 2021
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4 participants