我在初始化我创建的类型的数组时遇到了一些问题。
我创建了#34; TreeEdge.h"和#34; TreeNode.h",可以在以下代码中看到:
#pragma once
#include "TreeEdge.h"
class TreeNode {
TreeEdge northEdge;
TreeEdge eastEdge;
TreeEdge southEdge;
TreeEdge westEdge;
int xCoord;
int yCoord;
public:
// Default constructor
TreeNode() {
}
//constructor 2
TreeNode(int xInput, int yInput) {
xCoord = xInput;
yCoord = yInput;
}
void setEastSouthEdges(TreeEdge east, TreeEdge south) {
eastEdge = east;
southEdge = south;
}
void setAllTreeEdges(TreeEdge north, TreeEdge east, TreeEdge south, TreeEdge west) {
northEdge = north;
eastEdge = east;
southEdge = south;
westEdge = west;
}
};
和
#pragma once
class TreeEdge {
float weight;
int coords[4];
public:
TreeEdge() {
}
TreeEdge(int firstXCoord, int firstYCoord) {
coords[0] = firstXCoord;
coords[1] = firstYCoord;
}
void setWeight(float inputWeight) {
weight = inputWeight;
}
float getWeight() {
return weight;
}
void setStartCoords(int xCoord, int yCoord) {
coords[0] = xCoord;
coords[1] = yCoord;
}
int * getCoords() {
return coords;
}
void setEndCoords(int xCoord, int yCoord) {
coords[2] = xCoord;
coords[3] = yCoord;
}
};
然后我尝试简单地初始化一个TreeNode数组,希望用它做一些有用的事情,使用下面的代码......
#include "stdafx.h"
#include <opencv2/opencv.hpp>
#include <stdio.h>
#include "TreeEdge.h"
#include "TreeNode.h"
using namespace cv;
using namespace std;
int main()
{
// create 2D array for tree
TreeNode imageTreeNodes[544][1024]; // ???????????????? way to use none fixed values
waitKey(0);
return 0;
}
但是,我收到错误:&#34; MST.exe中0x00007FF6E91493D8处的未处理异常:0xC00000FD:堆栈溢出(参数:0x0000000000000001,0x0000002BFF003000)。 &#34;一旦程序进入主函数。
感谢您的帮助。
罗布
答案 0 :(得分:1)
您正在使用阵列在堆栈上分配太多内存。
sizeof(TreeNode); // Returns 88 bytes
因此,在分配544x1024元素的二维数组时,您试图在堆栈上分配~49MB!根据{{3}},进程的默认堆栈大小为1Mb,因此您遇到的堆栈溢出异常是因为进程内存不足。
虽然可以增加进程堆栈大小,但最好还是在堆上分配数组。这可以使用原始new
和delete
来完成,但也许更好的选择是使用std::vector
。所以改变你的main()
看起来像:
int main()
{
std::vector<std::vector<TreeNode>> array(544, std::vector<TreeNode>(1024,TreeNode())) ;
std::cout << "Array number of rows: " << array.size() << std::endl; // Prints 544
std::cout << "Array number of columns: " << array[0].size() << std::endl; // Prints 1022
}