[Lldb-commits] [lldb] [lldb][Windows] Dump thread stacks before lit's timeout kills a test (PR #213239)

[Adrian Prantl via lldb-commits]

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@@ -504,6 +504,19 @@ def registerFaulthandler():
     if getattr(faulthandler, "register", None):
         faulthandler.register(signal.SIGTERM, chain=True)
 
+    if sys.platform != "win32":
+        return
+
+    # lit kills a hung test with TerminateProcess on Windows, so the SIGTERM
+    # handler above never runs and a timeout is reported with no indication of
+    # where it hung. Dump every thread's stack while the process is still alive.
+    try:
+        secs = float(os.environ.get("LLDB_TEST_STACK_DUMP_SECS", 300))
+    except ValueError:
+        secs = 300
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adrian-prantl wrote:

We should not hardcode any timeouts let alone in different places. Would it be possible to derive this from the per-test timeout setting?

https://github.com/llvm/llvm-project/pull/213239