VxWorks中基于任务的并发编程示例和技术解答

这个示例代码展示了在VxWorks实时操作系统中实现基于任务的并发编程的方法。通过创建多个任务并运行它们，展示了如何在VxWorks环境中实现并发执行。任务之间通过消息队列进行通信，并展示了简单的消息发送和接收机制。

#include <vxWorks.h>
#include <taskLib.h>
#include <msgQLib.h>
#include <stdio.h>

#define MSG_SIZE 50
#define MAX_MSGS 10

MSG_Q_ID msgQueue;

void taskA() {
    char message[MSG_SIZE] = "Hello from Task A!";
    while (1) {
        msgQSend(msgQueue, message, MSG_SIZE, WAIT_FOREVER, MSG_PRI_NORMAL);
        taskDelay(100);
    }
}

void taskB() {
    char receivedMsg[MSG_SIZE];
    while (1) {
        msgQReceive(msgQueue, receivedMsg, MSG_SIZE, WAIT_FOREVER);
        printf("Received message: %s\n", receivedMsg);
        taskDelay(50);
    }
}

void vxworksExample() {
    msgQueue = msgQCreate(MAX_MSGS, MSG_SIZE, MSG_Q_FIFO);
    taskSpawn("taskA", 100, 0, 2000, (FUNCPTR)taskA, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
    taskSpawn("taskB", 100, 0, 2000, (FUNCPTR)taskB, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}

void main() {
    vxworksExample();
}

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