Function: unsubscribe_report

Product	Supported (√/x)
Ascend 950PR / Ascend 950DT	√
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Unsubscribes from a thread in the asynchronous scenario. The callback function in the stream will no longer be processed by the thread.

This API must be work with the following APIs to implement the callback function in asynchronous scenarios:

Create a thread. Once acl.rt.process_report in the thread function is called to set the timeout interval (cyclic calling is required), acl.rt.launch_callback will deliver a callback task after a period of time.
Call acl.rt.subscribe_report to bind the thread created in Step 1 to the stream. The callback task delivered by the stream is executed in the bound thread.
Execute an asynchronous job (for example, an asynchronous inference job) on the specified stream.
Define and implement the callback function, call acl.rt.launch_callback to deliver a callback task in the task queue of the stream, and trigger the thread to process the callback function subscribed by acl.rt.subscribe_report. Each time acl.rt.launch_callback is called, a callback task is delivered.
Call acl.rt.unsubscribe_report to unsubscribe from threads and unbind threads from streams after all asynchronous tasks are executed.

C Prototype

        
             aclError aclrtUnSubscribeReport(uint64_t threadId, aclrtStream stream)

Python Function

        
             ret = acl.rt.unsubscribe_report(thread_id, stream)

Parameter	Description
thread_id	Int, thread ID.
stream	Int, pointer address of the stream to be processed.

Return Value	Description
ret	Int, error code. 0 on success; else, failure.

Parent topic: Execution Control