操作系统实验：进程同步和死锁作业：编程模拟生产者/消费者问题（有界面 QT 可视化）

#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); ui->labelResult->setAlignment(Qt::AlignCenter); ui->labelResult->setText("Empty:12\nFull:0"); producerPosition = 0; consumerPosition = 0; p1 = new Producer(); p2 = new Producer(); p3 = new Producer(); p4 = new Producer(); c1 = new Consumer(); c2 = new Consumer(); c3 = new Consumer(); c4 = new Consumer(); graph[0] = ui->Buf1; graph[1] = ui->Buf2; graph[2] = ui->Buf3; graph[3] = ui->Buf4; graph[4] = ui->Buf5; graph[5] = ui->Buf6; graph[6] = ui->Buf7; graph[7] = ui->Buf8; graph[8] = ui->Buf9; graph[9] = ui->Buf10; graph[10] = ui->Buf11; graph[11] = ui->Buf12; connect(p1,SIGNAL(produce()),this,SLOT(produced1())); connect(p2,SIGNAL(produce()),this,SLOT(produced2())); connect(p3,SIGNAL(produce()),this,SLOT(produced3())); connect(p4,SIGNAL(produce()),this,SLOT(produced4())); connect(p1,SIGNAL(produceBlock(bool)),this,SLOT(produceBlocked1(bool))); connect(p2,SIGNAL(produceBlock(bool)),this,SLOT(produceBlocked2(bool))); connect(p3,SIGNAL(produceBlock(bool)),this,SLOT(produceBlocked3(bool))); connect(p4,SIGNAL(produceBlock(bool)),this,SLOT(produceBlocked4(bool))); connect(c1,SIGNAL(consume()),this,SLOT(consumed1())); connect(c2,SIGNAL(consume()),this,SLOT(consumed2())); connect(c3,SIGNAL(consume()),this,SLOT(consumed3())); connect(c4,SIGNAL(consume()),this,SLOT(consumed4())); connect(c1,SIGNAL(consumeBlock(bool)),this,SLOT(consumeBlocked1(bool))); connect(c2,SIGNAL(consumeBlock(bool)),this,SLOT(consumeBlocked2(bool))); connect(c3,SIGNAL(consumeBlock(bool)),this,SLOT(consumeBlocked3(bool))); connect(c4,SIGNAL(consumeBlock(bool)),this,SLOT(consumeBlocked4(bool))); } MainWindow::~MainWindow() { delete ui; } int producerPosition = 0; int consumerPosition = 0; QSemaphore empty(12); // 12个空间 QSemaphore full(0); static int p1Button = -1; static int p2Button = -1; static int p3Button = -1; static int p4Button = -1; static int c1Button = -1; static int c2Button = -1; static int c3Button = -1; static int c4Button = -1; void MainWindow::on_Producer1_clicked() { p1Button *= -1; p1->setCondition(p1Button); p1->start(); } void MainWindow::on_Producer2_clicked() { p2Button *= -1; p2->setCondition(p2Button); p2->start(); } void MainWindow::on_Producer3_clicked() { p3Button *= -1; p3->setCondition(p3Button); p3->start(); } void MainWindow::on_Producer4_clicked() { p4Button *= -1; p4->setCondition(p4Button); p4->start(); } // 生产信息可视化 void MainWindow::produced1() { QString str = "Producer1 produced\n"; QString str2 = QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[producerPosition]->setStyleSheet("background-color: rgb(255, 0, 0)"); } void MainWindow::produced2() { QString str="Producer2 produced\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[producerPosition]->setStyleSheet("background-color: rgb(255, 255, 0)"); } void MainWindow::produced3() { QString str="Producer3 produced\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[producerPosition]->setStyleSheet("background-color: rgb(0, 255, 0)"); } void MainWindow::produced4() { QString str="Producer4 produced\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[producerPosition]->setStyleSheet("background-color: rgb(65, 105, 225)"); } // 消费者按钮事件 void MainWindow::on_Consumer1_clicked() { c1Button *= -1; c1->setCondition(c1Button); c1->start(); } void MainWindow::on_Consumer2_clicked() { c2Button *= -1; c2->setCondition(c2Button); c2->start(); } void MainWindow::on_Consumer3_clicked() { c3Button *= -1; c3->setCondition(c3Button); c3->start(); } void MainWindow::on_Consumer4_clicked() { c4Button *= -1; c4->setCondition(c4Button); c4->start(); } // 消费事件可视化 void MainWindow::consumed1() { QString str="Consumer1 consumed\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[consumerPosition]->setStyleSheet("background-color: rgb(255, 255, 255)"); } void MainWindow::consumed2() { QString str="Consumer2 consumed\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[consumerPosition]->setStyleSheet("background-color: rgb(255, 255, 255)"); } void MainWindow::consumed3() { QString str="Consumer3 consumed\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[consumerPosition]->setStyleSheet("background-color: rgb(255, 255, 255)"); } void MainWindow::consumed4() { QString str="Consumer4 consumed\n"; QString str2=QObject::tr("Empty:%1\nFull:%2").arg(empty.available()).arg(full.available()); ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); ui->labelResult->clear(); ui->labelResult->setText(str2); graph[consumerPosition]->setStyleSheet("background-color: rgb(255, 255, 255)"); } // producer是否等待的可视化 void MainWindow::produceBlocked1(bool isBlocked) { if(isBlocked) { ui->Producer1->setStyleSheet("background-color: rgb(255, 0, 0)"); QString str="Producer1 suspended\n"; ui->textResult->insertPlainText(str); ui->textResult->moveCursor(QTextCursor::End); } else { ui->Producer1->setStyleSheet("background-color: rgb(0, 255, 0)"); } } void MainWindow::produceBlocked2(bool isBlocked) { if(isBlocked) { ui->Producer2->setStyleSheet("background-color: rgb(255, 0, 0)"); } else { ui->Producer2->setStyleSheet("background-color: rgb(0, 255, 0)"); } } void MainWindow::produceBlocked3(bool isBlocked) { if(isBlocked) { ui->Producer3->setStyleSheet("background-color: rgb(255, 0, 0)"); } else { ui->Producer3->setStyleSheet("background-color: rgb(0, 255, 0)"); } } void MainWindow::produceBlocked4(bool isBlocked) { if(isBlocked) { ui->Producer4->setStyleSheet("background-color: rgb(255, 0, 0)"); } else { ui->Producer4->setStyleSheet("background-color: rgb(0, 255, 0)"); } } // 判断消�