BMessageQueue

BMessageQueue is a class in Haiku OS that represents a queue of messages. It allows you to add messages to the queue and retrieve messages from the queue in a first-in, first-out (FIFO) order. This mechanism facilitates message passing between different parts of an application and enables communication between different threads or components.

Key Features of BMessageQueue

1. Message Storage: BMessageQueue stores messages in a queue data structure.
2. Thread-Safe: BMessageQueue is thread-safe, allowing multiple threads to add and retrieve messages from the queue simultaneously.
3. Asynchronous Communication: Messages can be added to the queue asynchronously, allowing different parts of an application to communicate without blocking.

How Does BMessageQueue Work?

The key to understanding BMessageQueue is its queue data structure, which stores messages in the order they are received. Here's how it works:

1. Adding Messages: You add messages to the queue using the EnqueueMessage() function.
2. Retrieving Messages: You retrieve messages from the queue using the DequeueMessage() function. Messages are retrieved in the order they were added to the queue (FIFO order).