CBFS Filter 2020 Node.js Edition

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GetOriginatorThreadId Method

Retrieves the Id of the thread that initiated the operation.

Syntax

cbmonitor.getOriginatorThreadId([callback])

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for this method is defined as:

function(err, data){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'data' is the value returned by the method.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

This method can be called within events fired for filesystem operations to retrieve the Id of the thread that initiated the operation. If the query fails, this method returns 0.

Please note that thread Ids are not unique, and may be reused by different threads over time.

Note: This method can only be called within events, and must be called in the same thread that the event was originally fired on. However, it must not be called within events that work with opened files since such events can be initiated by system components (e.g., the cache manager, memory manager, etc.). If applications need the information this method returns during such events, they may do the following:

  1. Call this method within the CreateFile or OpenFile event.
  2. Store the information somewhere, and store a reference to it in the event's HandleContext parameter.
  3. In a later event, access the information via the reference stored in HandleContext.
Please refer to the Contexts topic for more information on how to use events' context parameters.

Note: Renaming and deletion of files is performed after the file is opened. Thus, access checks should be performed during file opening as described above.

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CBFS Filter 2020 Node.js Edition - Version 20.0 [Build 8164]