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Use barriers for netmgr synchronization

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The netmgr listening, stoplistening, pausing and resuming functions
now use barriers for synchronization, which makes the code much simpler.

isc/barrier.h defines isc_barrier macros as a front-end for uv_barrier
on platforms where that works, and pthread_barrier where it doesn't
(including TSAN builds).
This commit is contained in:
Ondřej Surý
2021-05-05 11:51:39 +02:00
committed by Evan Hunt
parent 2eae7813b6
commit 4c8f6ebeb1
14 changed files with 589 additions and 328 deletions
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lib/isc/task.c
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@@ -1014,7 +1014,7 @@ isc__taskmgr_shutdown(isc_taskmgr_t *manager) {
REQUIRE(VALID_MANAGER(manager));
XTHREADTRACE(e "isc_taskmgr_shutdown");
XTHREADTRACE("isc_taskmgr_shutdown");
/*
* Only one non-worker thread may ever call this routine.
* If a worker thread wants to initiate shutdown of the