interruptible | interruptible functions in javascript | Functional Programming library

I want a step in the build process only to run on the master branch, if there where changes to the src folder.

My .gitlab-ci.yml file thus contains:

I have trouble with connecting to a local web interface (192.168.10.13:3671) that are connected to my KNX network from the emulator/phone in Android Studio. I've tried to connect to the same web interface with a already developed app called KNXwizard and that works, but I see in the code that that app uses AsyncTask.

Always getting this error: Error creating KNXnet/IP tunneling link: tuwien.auto.calimero.KNXException: connecting from /192.168.163.198:3671 to /192.168.10.13:3671: socket failed: EPERM (Operation not permitted)

I've checked this posts

Socket failed 1

Socket failed 2

Tried everything there, added permissions to my AndroidManifest.xml, uninstalled, used physical phone etc. But nothing works.

It could be my code, I've tried searching for an alternative method for AsyncTask. So it could be that the code is written wrong. Hope someone could help me out.

MainActivity:

I'm a beginner at Android Development and hoping someone can help me a bit out.

I want to connect to a local server (IP). I found a code in GitHub that supposedly would do this connection. But the thing is that this is a java.class and not in my MainActivity. So when I run my app in the emulator now, nothing happens. How can I run the Java.class from inside my MainActivity?

Here is the source: https://github.com/calimero-project/introduction/tree/master/src/main/java

Class:

During a planned downtime for our Kafka cluster, we basically encountered the following issue How to specify timeout for sending message to RabbitMQ using Spring Cloud Stream? (with Kafka rather than RabbitMQ, obviously).

The answer from @GaryRussell:

The channel sendTimeout only applies if the channel itself can block, e.g. a QueueChannel with a bounded queue that is currently full; the caller will block until either space becomes available in the queue, or the timeout occurs.

In this case, the block is downstream of the channel so the sendTimeout is irrelevant (in any case, it's a DirectChannel which can't block anyway, the subscribed handler is called directly on the calling thread).

The actual blocking you are seeing is most likely in the socket.write() in the rabbitmq client, which does not have a timeout and is not interruptible; there is nothing that can be done by the calling thread to "time out" the write.

The only possible solution I am aware of is to force close the rabbit connection by calling resetConnection() on the connection factory.

explains quite well why the method in question (org.springframework.integration.channel.AbstractSubscribableChannel#doSend) does not take the timeout into account. However, this still seems a bit odd to me.

In spring-integration-kafka-3.2.1.RELEASE-sources.jar!/org/springframework/integration/kafka/outbound/KafkaProducerMessageHandler.java:566, we can see that, if sync behaviour is desired:

I am using sem_wait() as part of an IPC application, but I want the wait to be interruptible by ctrl-C, and to continue the program if this happens. Currently, however, any signal terminates my program.

The sem_wait man page says "the sem_wait() function is interruptible by the delivery of a signal." So I am hoping to reach the line marked ### with result == EINTR when I press ctrl-C or otherwise send this process a signal. But as it stands, I do not: the program just terminates with the usual signum-dependent message.

I presumably have to change the signal handler somehow, but how? I tried defining void handler(int){} and registering it with signal(SIGINT, handler). That prevents termination of course but it doesn’t magically make sem_wait() interruptible—presumably there’s something different I should be doing during registration, or in the handler itself.

I'm on Ubuntu 20.04 LTS and macOS 10.13.6 if this makes any difference.

I want to build a singularity image in GitLab CI. Unfortunately, the official containers fail with:

I am currently working on a PCI driver for the Xilinx Kintex 7 board using the Xilinx PCI IP core (AXI Memory Mapped to PCIe). One problem is, that the interrupt handler stops working when I reload the kernel module. In more detail:

1. Fresh boot of my machine
2. Load the kernel module and monitor the kernel messages with dmesg
3. /proc/interrupts shows the expected interrupt ids
4. I trigger the HW interrupt and everything works as expected; I can see the interrupt handler working.
5. rmmod my_module
6. /proc/interrupts removed the interrupt ids as expected
7. insmod my_module and trigger interrupt
8. Now the interrupt handler is silent and /proc/interrupts does not increase the counter

I reboot my machine and everything works again. The fact that I do not have to restart the FPGA lets me assume that I do something wrong in the kernel module and its probably not an HW problem.

I've already used /sys/pci/devices/.../reset, /sys/bus/pci/devices/.../remove and /sys/bus/pci/rescan to try to reach a state which is equivalent to freshly booted machine. But nothing worked.

Relevant module code:

For the sched() function (proc.c) in XV6

1. why must we disable interrupts when doing a context switch? Is it because if interrupts are enabled, the sched function can be repeatedly invoked?
2. Why must ncli (the depth of pushcli nesting) be equal to 1?

I am trying to write a web worker that performs an interruptible computation. The only way to do that (other than Worker.terminate()) that I know is to periodically yield to the message loop so it can check if there are any new messages. For example this web worker calculates the sum of the integers from 0 to data, but if you send it a new message while the calculation is in progress it will cancel the calculation and start a new one.