What is the difference between swoole coroutine and go coroutine?

Difference: 1. The go coroutine is based on multi-threading and can utilize multi-core CPUs, while the swoole coroutine is based on single-threading and cannot utilize multi-core CPUs; 2. The go coroutine does not need to declare the coroutine environment , and the swoole coroutine must be used in the context of the coroutine.

The operating environment of this tutorial: Windows 10 system, Swoole4&&GO version 1.11.2, DELL G3 computer

The difference between swoole coroutine and go coroutine What

The Go language level supports coroutines, and there is no need to declare the coroutine environment. Swoole must be used in the context of a coroutine.

Go is based on multi-threading and can utilize multi-core CPUs. Swoole's coroutines are based on single-threads and cannot utilize multi-core CPUs

Coroutines are more lightweight than threads The existence of levels, just as a process can have multiple threads, a thread can have multiple coroutines. Coroutines have the following characteristics

User mode execution, completely controlled by the program, not managed by the operating system kernel

Suitable for processing IO-intensive tasks, as for what is IO-intensive This type of task will not be introduced in detail here. It is mainly different from CPU-intensive tasks.

Converts competition resources in threads into collaborative running

Channels (Channel) for inter-coroutine communication Communication

A small amount of context switching overhead, mainly running on the thread. In contrast, the context switching of the process is stored in the stack resource, while the coroutine is asynchronous and non-blocking, equivalent to the queue in the user mode thread For tasks, you only need to use the channel as a callback, and there is no need to grab resources twice after the task is completed.

Next, let’s talk about the difference between swoole coroutine and Go coroutine in detail

Swoole Coroutine

Swoole's coroutine client must be used in the context of the coroutine.

Swoole's coroutine is based on a single thread and cannot utilize multi-core CPUs. Only one is scheduled at the same time.

Swoole coroutine usage examples and detailed explanation

Go's coroutine goroutine

goroutine is a lightweight thread, and the Go language has Support native coroutines.

Go coroutines have very little overhead compared to threads.

The stack overhead of Go coroutine is only 2KB, which can be increased and reduced according to the needs of the program.

The thread must specify the size of the stack, and the size of the stack is fixed.

Recommended learning: swoole tutorial

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