[rdma-core,0/2] pyverbs: Support CQ events properly

Message

Noa Osherovich Jan. 6, 2020, 3:01 p.m. UTC

CQ events have to be acked prior to CQ destruction. Otherwise, CQ
destruction will wait indefinitely for those events to be acked.
In Python it's possible for a simple syntax error to cause a runtime
error which leads to teardown of all objects. For CQ, this can mean
a destruction without acking CQ events.

To avoid that, keep track of the number of events and during teardown,
if there are events that weren't acked, do so implicitly.

The first patch adds this support. The second one adds a simple
traffic test that uses CQ events mechanism rather than poll.

Noa Osherovich (2):
  pyverbs: Handle CQ events properly
  tests: Add a test for completion events

 pyverbs/cq.pxd          |  2 ++
 pyverbs/cq.pyx          | 14 ++++++++++++-
 tests/CMakeLists.txt    |  1 +
 tests/test_cq_events.py | 45 +++++++++++++++++++++++++++++++++++++++++
 tests/utils.py          | 11 +++++++---
 5 files changed, 69 insertions(+), 4 deletions(-)
 create mode 100644 tests/test_cq_events.py