<https://twitter.com/SUPERCILEX/status/10527576723...
# coroutiness
SUPERCILEX
10/18/2018, 5:59 AMe
elizarov
10/18/2018, 8:45 AMYou cannot cancel blocking work, unless it is cooperates with cancellation. Cancellation is always cooperative.
s
SUPERCILEX
10/18/2018, 2:36 PMSo how do we deal with blocking calls?
SUPERCILEX
10/18/2018, 2:37 PMShould we wrap them in some sort of future and use the cancelable continuation?
e
elizarov
10/18/2018, 2:46 PMWrapping the into a future would not help you to cancel them. Just don’t
elizarov
10/18/2018, 2:46 PMThat is one big reason not do blocking work.
elizarov
10/18/2018, 2:47 PMBut if you have to (like JDBC drivers, for example), just live with the fact they cannot be cancelled
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SUPERCILEX
10/18/2018, 2:56 PMAlright, not quite what I'd hoped but it makes sense
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elizarov
10/18/2018, 3:10 PMNow, some limited subsets for blocking APIs have api-specific means of cancellation. For example, if you do blocking socket IO, the closing the socket aborts blocked operation. For those cases you can implement your own API-specific cancellable solution. But in general, blocking APIs are simply non-cancellable
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SUPERCILEX
10/18/2018, 3:23 PMGood point
SUPERCILEX
10/18/2018, 3:23 PMWhat API can I use since this is internal? https://github.com/Kotlin/kotlinx.coroutines/blob/5768067221b27f3a50c85f7f80440e825729bbe2/common/kotlinx-coroutines-core-common/src/Job.kt#L359
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elizarov
10/18/2018, 3:28 PMsuspendCancellableCoroutine👍 1
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