What is a POSIX Message Queue?

What is a POSIX Message Queue?

POSIX message queues are a means by which processes exchange data in the form of messages to accomplish their tasks. They enable processes to synchronise their reads and writes to speed up processes. POSIX message queues are distinct from System V messages.

Are message queues thread safe?

Queues are thread safe in that multiple tasks can try to concurrently write to or read from a given queue, and the queue will handle the syncronization so that each message gets put in as a unique message and each message gets sent to a single task.

Why is MQ needed?

What can it do for me? IBM MQ provides a universal messaging backbone with robust connectivity for flexible and reliable messaging for applications and the integration of existing IT assets using a service-oriented architecture (SOA). IBM MQ sends and receives data between your applications, and over networks.

How do you communicate between two threads?

Cooperation (Inter-thread communication) is a mechanism in which a thread is paused running in its critical section and another thread is allowed to enter (or lock) in the same critical section to be executed.It is implemented by following methods of Object class: wait() notify() notifyAll()

What is system queues in MQ?

QUEUE , is a local queue to which suitably authorized applications can send MQSC commands for processing. These commands are then retrieved by an IBM WebSphere MQ component called the command server.

What’s the difference between a process and a thread?

Process means a program is in execution, whereas thread means a segment of a process. A Process is not Lightweight, whereas Threads are Lightweight. A Process takes more time to terminate, and the thread takes less time to terminate. Process takes more time for creation, whereas Thread takes less time for creation.

Is AIX System V?

AIX is based on UNIX System V with 4.3BSD-compatible extensions.

Why is FreeBSD faster than Linux?

On the whole, FreeBSD is generally faster than Linux. This is largely due to the fact that it’s a complete system. Furthermore, FreeBSD has a lower latency than Linux, which means that it processes inputs faster. Companies like Netflix, Apple, and Cisco utilize FreeBSD for this processing advantage.