华为仓颉编程语言的背后本质

<code class="language-plain has-numbering hljs" id="code_id_0">//import std.socket.*  这是仓颉官方文档上的代码 会编译报错
from std import socket.* //这是我自已修改的代码 编译通过
//import std.time.* 这是仓颉官方文档上的代码 会编译报错
from std import time.* //这是我自已修改的代码 编译通过
//import std.sync.* 这是仓颉官方文档上的代码 会编译报错
from std import sync.* //这是我自已修改的代码 编译通过


let SERVER_PORT: UInt16 = 8080


func runTcpServer() {
    try (serverSocket = TcpServerSocket(bindAt: SERVER_PORT)) {
        serverSocket.bind()


        try (client = serverSocket.accept()) {
            let buf = Array<Byte>(10, item: 0)
            let count = client.read(buf)


            // 服务端读取到的数据为: [1, 2, 3, 0, 0, 0, 0, 0, 0, 0]
            println("Server read ${count} bytes: ${buf}")
        }
    }
}


main(): Int64 {
    spawn {
    //创建监听socket
        runTcpServer()
    }
    sleep(Duration.millisecond * 500)
//创建客户端连接 自已连接自已 
    try (socket = TcpSocket("127.0.0.1", SERVER_PORT)) {
        socket.connect()
        socket.write(Array<Byte>([1, 2, 3]))
    }


    return 0
}</code>

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<code class="language-plain has-numbering hljs" id="code_id_1">[pid 26567] execve("./target/release/bin/main", ["./target/release/bin/main"], 0x55f07661e1e0 /* 21 vars */) = 0
//运行加载ELF文件
[pid 26589] socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, IPPROTO_IP) = 3
//创建IPV4 SOCKET
[pid 26589] bind(3, {sa_family=AF_INET, sin_port=htons(8080), sin_addr=inet_addr("0.0.0.0")}, 16) = 0
//绑定地址和端口
[pid 26589] listen(3, 1024)             = 0
//监听服务
[pid 26589] epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=1856134560, u64=94091704688032}}) = 0
[pid 26593] epoll_wait(4, [{EPOLLIN|EPOLLOUT|EPOLLRDHUP, {u32=3556772976, u64=140629375978608}}], 64, 10) = 1
[pid 26593] epoll_wait(4,  <unfinished ...>
//打印数据
[pid 26594] write(1, "Server read 3 bytes: [1, 2, 3, 0, 0, 0, 0, 0, 0, 0]\n", 52) = 52
[pid 26594] epoll_ctl(4, EPOLL_CTL_DEL, 6, 0x55936e9fcb90) = 0
[pid 26594] epoll_ctl(4, EPOLL_CTL_DEL, 3, 0x55936e9fcb90) = 0
[pid 26593] <... epoll_wait resumed> [], 64, 10) = 0
//退出进程 进程结束
[pid 26593] exit(0)</code>

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