Abstract: Detecting non-callable external component APIs is provided. It is determined whether a first function call stack of a worker thread in a multi-threaded application of the computer matches a second function call stack of the worker thread. In response to determining that the first function call stack matches the second function call stack of the worker thread, an external component application programming interface (API) corresponding to the worker thread is identified from a function call stack of the worker thread. The external component API corresponding to the worker thread is marked as non-callable in an API state map. The worker thread is marked as being in a hang state. The worker thread in the hang state is terminated as a remediation action step to maintain performance.

Abstract: A call for communication is detected between applications, where the call requires input from a plurality of threads of the applications via editing of a single control message in a queue such that the single control message reflects data from each of the applications. An attempt by a first of the plurality of threads to edit the single control message is detected while a second of the plurality of threads is editing the single control message. A message is sent to the first of the plurality of threads that details a status of the single control message in response to detecting the attempt. The call for communication is responded to using the single control message in response to detecting that each of the plurality of threads has edited the single control message.

Abstract: A call for communication is detected between applications, where the call requires input from a plurality of threads of the applications via editing of a single control message in a queue such that the single control message reflects data from each of the applications. An attempt by a first of the plurality of threads to edit the single control message is detected while a second of the plurality of threads is editing the single control message. A message is sent to the first of the plurality of threads that details a status of the single control message in response to detecting the attempt. The call for communication is responded to using the single control message in response to detecting that each of the plurality of threads has edited the single control message.

Abstract: Detecting non-callable external component APIs is provided. It is determined whether a first function call stack of a worker thread in a multi-threaded application of the computer matches a second function call stack of the worker thread. In response to determining that the first function call stack matches the second function call stack of the worker thread, an external component application programming interface (API) corresponding to the worker thread is identified from a function call stack of the worker thread. The external component API corresponding to the worker thread is marked as non-callable in an API state map. The worker thread is marked as being in a hang state. The worker thread in the hang state is terminated as a remediation action step to maintain performance.