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| author | Damien George <damien@micropython.org> | 2025-07-10 16:43:35 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2025-07-22 23:22:05 +1000 |
| commit | 97fd18a7e299f5a00207f47c1728a9bb67a2fda0 (patch) | |
| tree | 2478015bc059d554a13fd703382b7aaaa6b7ba17 | |
| parent | 18f2e94846111ad05d49e260c59de366f3ae2489 (diff) | |
tests/extmod/select_poll_eintr.py: Pre-allocate global variables.
This is a workaround for the case where threading is enabled without a GIL.
In such a configuration, creating a new global variable is not atomic and
threads have race conditions resizing/accessing the global dict.
Signed-off-by: Damien George <damien@micropython.org>
| -rw-r--r-- | tests/extmod/select_poll_eintr.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/extmod/select_poll_eintr.py b/tests/extmod/select_poll_eintr.py index d9e9b3190..fdc5ee507 100644 --- a/tests/extmod/select_poll_eintr.py +++ b/tests/extmod/select_poll_eintr.py @@ -33,6 +33,14 @@ def thread_main(): print("thread gc end") +# Pre-allocate global variables here so the global dict is not resized by the main +# thread while the secondary thread runs. This is a workaround for the bug described +# in https://github.com/micropython/micropython/pull/11604 +poller = None +t0 = None +result = None +dt_ms = None + # Start a thread to interrupt the main thread during its call to poll. lock = _thread.allocate_lock() lock.acquire() |