Module watchdog

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Module watchdog

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Classes

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CallCancelled
Raised when a call is cancelled.

Suspender
A context manager to temporarily suspend the watchdog for a block of code.

CancellableCallThread
A worker thread used to execute a call which must be made cancellable.

Functions

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alive()
Inform the watchdog that the core is alive.

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_watcher()

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_shouldRecoverAfterMinTimeout()

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_recoverAttempt()

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_crashHandler(exceptionInfo)

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_notifySendMessageCancelled()

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_COMError_init(self, hresult, text, details)

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initialize()
Initialize the watchdog.

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terminate()
Terminate the watchdog.

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cancellableExecute(func, *args, **kwargs)
Execute a function in the main thread, making it cancellable.

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cancellableSendMessage(hwnd, msg, wParam, lParam, flags=0, timeout=60000)
Send a window message, making the call cancellable.

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Variables

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CHECK_INTERVAL = 0.1

NORMAL_CORE_ALIVE_TIMEOUT = 10

MIN_CORE_ALIVE_TIMEOUT = 0.5

RECOVER_ATTEMPT_INTERVAL = 0.05

FROZEN_WARNING_TIMEOUT = 15

safeWindowClassSet = set(['Internet Explorer_Server', '_WwG', ...

isRunning = False

isAttemptingRecovery = False

_coreAliveEvent = threading.Event()

_resumeEvent = threading.Event()

_coreThreadID = windll.kernel32.GetCurrentThreadId()

_watcherThread = None
hash(x)

RPC_E_CALL_CANCELED = -2147418110

_orig_COMError_init = comtypes.COMError.__init__

cancellableCallThread = None
hash(x)

Function Details

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_crashHandler(exceptionInfo)

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Decorators:

@ctypes.WINFUNCTYPE(ctypes.wintypes.LONG, ctypes.c_void_p)

_notifySendMessageCancelled()

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Decorators:

@ctypes.WINFUNCTYPE(None)

cancellableExecute(func, *args, **kwargs)

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Execute a function in the main thread, making it cancellable.

Parameters:

func (callable) - The function to execute.
ccPumpMessages (bool) - Whether to pump messages while waiting.
args - Positional arguments for the function.
kwargs - Keyword arguments for the function.

Raises:

CallCancelled - If the call was cancelled.

cancellableSendMessage(hwnd, msg, wParam, lParam, flags=0, timeout=60000)

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Send a window message, making the call cancellable. The timeout and flags arguments should usually be left at their default values. The call will still be cancelled if appropriate even if the specified timeout has not yet been reached.

Raises:

CallCancelled - If the call was cancelled.

Variables Details

[hide private]

safeWindowClassSet

Value:

set(['Internet Explorer_Server', '_WwG', 'EXCEL7',])