Question

我正在编写一个程序，它是由多用户计算机的CPU模拟服务作业。我已经定义了一个名为job的类，我创建了两个这种类型的队列，一个是waitQueue，另一个是CPUqueue。我正在尝试使用CPUqueue中的数据填充waitQueue，并将其从waitQueue中弹出并将其推送到CPUqueue - 这就是目标，但是。我似乎无法写出这部分而没有错误地说error: request for member ‘push’ in ‘waitQueue’, which is of non-class type ‘std::queue<job> [10]’（同样对于其他函数调用也是如此。请帮助..！

这是我一直在研究的main.cpp文件：

#include <iostream>
#include <string>
#include <stdlib.h>
#include <queue>
#include "job.cpp"

using namespace std;

int main()
{
  int second = 0, jobsCompleted = 0, jobsToComplete = 0, probUser = 0, probability;
  long id;
  jobType_t job_type;
  int inWQ, outWQ, inCPUQ, outCPUQ, required, given, jobTypeInt;
  queue<job> CPUqueue[10], waitQueue[10];

  srand(time(NULL));

  cout << "Enter how many jobs need to be completed: ";
  cin >> jobsToComplete;
  cout << endl <<  "Enter the probability that a new job is created: ";
  cin >> probUser;
  cout << endl;

  while(jobsCompleted < jobsToComplete)
    {
      second++;
      probability = rand() % 100 + 1;

      if(probability > probUser)
    {
      cout << "Enter new JOB ID: ";
      cin >> id;
      jobTypeInt = rand() % 1 + 1;
      if(jobTypeInt = 1) job_type = IO_bound;
      else job_type = CPU_bound;
      required = rand() % 10;
      inWQ = second;
      job *newJob = new job(id, job_type, inWQ, outWQ, inCPUQ, outCPUQ, required, given); 
      waitQueue.push(newJob);
    }
      while(!CPUqueue.isFull())
    {
      waitQueue.back();
      job *temp = waitQueue.pop();

      CPUqueue.push(temp);
    }
    }

  return 0;
}

谢谢！

Answer 1

queue<job> CPUqueue[10], waitQueue[10];

这将创建两个包含10个队列的数组。它可能不是你想要的。

尝试：

queue<job> CPUqueue, waitQueue;

Answer 2

你有一个队列数组，而不是队列，推送不适用于数组。

Answer 3

除了@ otibom的回答：

non-class type ‘std::queue<job> [10]’

意味着：waitQueue被声明为数组。数组中的对象是queue s，但可验证的不是。

如何从类队列中“推”和“弹出”？

3 个答案: