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feat(mpmc_blocking_q): add blocking dequeue without timeout (#2588)

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Use the new blocking dequeue to avoid unnecessarily waking up the
thread pool every 10s.

Fixes #2587 by replacing std::condition_variable::wait_for with
std::condition_variable::wait as a workaroung for gcc 11.3 issue 101978.

Co-authored-by: Alok Priyadarshi <alokp@dexterity.ai>
This commit is contained in:
Alok Priyadarshi
2022-12-30 05:20:10 -08:00
committed by GitHub
parent edc51df1bd
commit a4e9917575
3 changed files with 47 additions and 9 deletions
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24
tests/test_mpmc_q.cpp
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@@ -43,6 +43,26 @@ TEST_CASE("dequeue-empty-wait", "[mpmc_blocking_q]")
REQUIRE(delta_ms <= wait_ms + tolerance_wait);
}
TEST_CASE("dequeue-full-nowait", "[mpmc_blocking_q]")
{
spdlog::details::mpmc_blocking_queue<int> q(1);
q.enqueue(42);
int item = 0;
q.dequeue_for(item, milliseconds::zero());
REQUIRE(item == 42);
}
TEST_CASE("dequeue-full-wait", "[mpmc_blocking_q]")
{
spdlog::details::mpmc_blocking_queue<int> q(1);
q.enqueue(42);
int item = 0;
q.dequeue(item);
REQUIRE(item == 42);
}
TEST_CASE("enqueue_nowait", "[mpmc_blocking_q]")
{
@@ -95,12 +115,12 @@ TEST_CASE("full_queue", "[mpmc_blocking_q]")
for (int i = 1; i < static_cast<int>(q_size); i++)
{
int item = -1;
q.dequeue_for(item, milliseconds(0));
q.dequeue(item);
REQUIRE(item == i);
}
// last item pushed has overridden the oldest.
int item = -1;
q.dequeue_for(item, milliseconds(0));
q.dequeue(item);
REQUIRE(item == 123456);
}