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Author SHA1 Message Date
hayodea d2ed525106 Debug:Qutex: Add deadlock detection based on elapsed time 
We now detect that a deadlock is likely when
CONFIG_DEBUG_QUTEX_DEADLOCK_TIMEOUT_MS has elapsed. This is the
preliminary work required to do a backtrace through the call
stack and figure out if a deadlock has really occured.

To do this, we'd have to go through the async call chain and
search for a previous caller which acquired the same qutex as
the one that first failed during this Lockvoker LockSet acquisition
attempt.
 2025-09-21 15:11:28 -04:00
hayodea dbc9569775 Async: Add exception bubbling 
CONT_SET_EXC: Set exception on the continuation, to be rethrown
	by the caller.
CONT_SET_EXC_AND_RET: Convenience which returns immediately
	after setting the exception.
 2025-09-21 14:21:55 -04:00
hayodea 32179eee5e Qutexes: Implement them and supporting classes 
Implements: LockSet, SerializedAsynchronousContinuation,
	LockerAndInvoker, LockerAndInvokerBase, Qutex.

Very big leap in functionality here. See qutexes.md for
an explanation of what we've done.
 2025-09-20 18:20:52 -04:00