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feat(streams): Add support for XREAD BLOCK (#1291)

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* feat(streams): Add support for XREAD BLOCK

---------

Signed-off-by: Andrew Dunstall <andydunstall@hotmail.co.uk>
This commit is contained in:
Andy Dunstall 2023-05-27 20:47:31 +01:00 • committed by GitHub
parent bc717a037d
commit 1cfeff21a4
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7 changed files with 309 additions and 73 deletions
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5
src/server/transaction.cc
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@ -1116,6 +1116,9 @@ bool Transaction::WaitOnWatch(const time_point& tp, WaitKeysProvider wkeys_provi
wakeup_requested_.load(memory_order_relaxed) > 0;
};
auto* stats = ServerState::tl_connection_stats();
++stats->num_blocked_clients;
cv_status status = cv_status::no_timeout;
if (tp == time_point::max()) {
DVLOG(1) << "WaitOnWatch foreva " << DebugId();
@ -1131,6 +1134,8 @@ bool Transaction::WaitOnWatch(const time_point& tp, WaitKeysProvider wkeys_provi
DVLOG(1) << "WaitOnWatch await_until " << int(status);
}
--stats->num_blocked_clients;
bool is_expired = (coordinator_state_ & COORD_CANCELLED) || status == cv_status::timeout;
UnwatchBlocking(is_expired, wkeys_provider);
coordinator_state_ &= ~COORD_BLOCKED;