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Return if stopped_ is not zero at the begining of loop in do_one #1544

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Return if stopped_ is not zero at the begining of loop in do_one #1544

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7 changes: 7 additions & 0 deletions asio/include/asio/detail/impl/win_iocp_io_context.ipp
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Original file line number Diff line number Diff line change
Expand Up @@ -414,6 +414,13 @@ size_t win_iocp_io_context::do_one(DWORD msec,
{
for (;;)
{
// Check if the context has been stopped
if (::InterlockedExchangeAdd(&stopped_, 0) != 0)
{
ec = asio::error_code();
return 0;
}

// Try to acquire responsibility for dispatching timers and completed ops.
if (::InterlockedCompareExchange(&dispatch_required_, 0, 1) == 1)
{
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