thread of AcceptEx pending asynchronous operation is closed before operations complete

[Mos Yud]

,Hi

.I am using GRPC 1.4.0 on windows

:According the code, accepting new connection goes like this

:Thread1

...

closure_exec_thread_func

Listen

AcceptEx with ovelapped

the sockets are associated with g_iocp.

thread 2:

...

grpc_iocp_work

GetQueuedCompletionStatus

.thread 2 might be executed after thread 1 is terminated

:according to msdn reference about acceptex

Note   All I/O initiated by a given thread is canceled when that thread exits. For overlapped sockets, pending asynchronous operations can fail if the thread is closed before the operations complete. See ExitThread for more information.

.When activating AcceptEx at thread 1, it creates pending asynchronous operations

At thread 2 we query for information regarding this pendin io operation.

?Shouldnt there be a problem with this flow

I do know that such a flow (Thread 1: assynchronous accept exit, Thread 2: GetQueuedCompletionStatus) might cause a problem in windows XP

Thx,

Moshe.

 

[Nicolas Noble]

Which scenario have you identified that leads to a thread exiting ?

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[Mos Yud]

. I activate a server with no clients. The server invoke AcceptEx (on a seperate thread), and returns immediatelly with ERROR_IO_PENDING.  
  On another thread (worker thread), there is a call to GetQueueStatusComplete from grpc_iocp_work.

  grcp_iocp_work is invoked periodically, and its also invoked after AcceptEx thread has completed.

Moshe.

בתאריך יום שלישי, 25 ביולי 2017 בשעה 23:04:30 UTC+3, מאת Nicolas Noble:

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