-
Notifications
You must be signed in to change notification settings - Fork 1
/
可变分区存储-完整版-双击查看.html
229 lines (217 loc) · 7.71 KB
/
可变分区存储-完整版-双击查看.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>可变式存储管理</title>
<link href="css/bootstrap.css" rel="stylesheet" type="text/css">
<link href="css/bootstrap-theme.min.css" rel="stylesheet" type="text/css">
<!--<script type="text/javascript" src="js/jquery.min.js"></script>-->
<script type="text/javascript" src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="col-lg-6">
<h3 id="state">总块号10，已分配<span id="space_user">0</span>，剩余<span id="space_release">0</span>，每块大小2048</h3>
<ul class="list-group" id="zone">
<!--<li class="list-group-item" id="0">空闲块号1</li>-->
</ul>
</div>
<!--[col-lg-6]end-->
<div class="col-lg-6">
<h3>可变分区式存储管理模拟</h3>
<div class="col-lg-12">
<!--<form>-->
<div class="form-group">
<label for="sq">申请作业</label>
<input type="text" class="form-control" id="sq" value="20" placeholder="请输入要申请的空间大小"
onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')">
</div>
<button type="submit" class="btn btn-default" onClick="apply()"><i class="glyphicon glyphicon-plus"></i> 申请
</button>
<div class="form-group">
<label for="sf">释放作业</label>
<input type="text" class="form-control" id="sf" placeholder="请输入要释放的空间编号"
onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')">
<p class="help-block">温馨提示：使用鼠标单击左边红色的使用空间，可自动填写编号！</p>
</div>
<button type="submit" class="btn btn-default" onClick="release()"><i class="glyphicon glyphicon-trash"></i> 释放
</button>
<!--</form>-->
</div>
<!--[col-lg-12]end-->
</div>
<!--[col-lg-6]end-->
</div>
<!--[container]end-->
<script type="text/javascript">
function color(num) {
var color;
switch (num) {
case 0:
color = "list-group-item-success";
break;
case 1:
color = "list-group-item-danger";
break;
default:
color = "";
}
return color;
}
function check(id) {
document.getElementById("sf").value = id;
}
function show() {
var str = '';
var colors;
var no_user_size = 0;
var user_size = 0;
var str_state = '';
var temp;
var mouse_click;
for (var i = 0; i < arr.length; i++) {
temp = parseInt(get(arr[i])[0]);
colors = color(temp);
if (get(arr[i])[0] == 1) { state = "占用"; mouse_click = 'onClick="check(this.id);"' } else { state = "空闲"; mouse_click = '' }
//str+="编号 "+i+", 状态 "+state+", 起始地址 "+get(arr[i])[1]+", 长度 "+get(arr[i])[2]+ "<br />";
str += '<a href="#" class="list-group-item ' + colors + '" id="' + i + '"' + mouse_click + '>编号 ' + i + ', 状态 ' + state + ', 起始地址 ' + get(arr[i])[1] + ', 长度 ' + get(arr[i])[2] + '</a>';
if (get(arr[i])[0] == 0) {
no_user_size += parseInt(get(arr[i])[2]);
} else {
user_size += parseInt(get(arr[i])[2]);
}
}
document.getElementById("zone").innerHTML = str;
str_state = '总空间大小 <span class="text-success">100</span>' + ',已使用大小 <span class="text-danger">' + user_size + '</span>,空闲大小 <span class="text-success">' + no_user_size + '</span>';
document.getElementById("state").innerHTML = str_state;
}
var arr = new Array()
arr[0] = "0,0,100"
function get(str) {
//定义一数组
var content = new Array();
//取出所系统随机选择的空位索引
content = str.split(",");
return content;
}
function set(num, type, location, content) {
var st = get(arr[num]);
var con;
switch (location) {
case 0:
con = content + "," + st[1] + "," + st[2];
break;
case 1:
con = st[0] + "," + content + "," + st[2];
break;
case 2:
con = st[0] + "," + st[1] + "," + content;
break;
}
arr.splice(num, type, con)
}
show();
function apply() {
//arr.splice(2,1,"1,William,"+"40,"+size)
var state = 0;
var size = parseInt(document.getElementById("sq").value);//要申请的空间大小
var length = arr.length;
for (var i = 0; i < length; i++) {
if (parseInt(get(arr[i])[0]) == 0 && parseInt(get(arr[i])[2]) == size) {
set(i, 1, 0, 1);
break;
} else if (parseInt(get(arr[i])[0]) == 0 && parseInt(get(arr[i])[2]) > size) {
//alert(i+"空间大于");
var start = parseInt(get(arr[i])[1]);
var long = parseInt(get(arr[i])[2]) - size;
arr.splice(i, 0, "1," + start + "," + size)
set(i + 1, 1, 1, start + size);
set(i + 1, 1, 2, long);
break;
} else {
//alert(i+"空间小于");
state++;
}
}
if (state == length) {
alert("现有空间大小不满足条件！");
} else {
show();
}
}
function release() {
var num = parseInt(document.getElementById("sf").value);
var state = false;
for (var i = 0; i < arr.length; i++) {
if (i == num && get(arr[i])[0] != 0) {
set(i, 1, 0, 0);
state = true;
break;
}
}
if (state == false) {
alert("此编号名无效！");
} else {//只有当有释放空间的时候才运行合并方法
//show();
merge_space();
show();
}
}
function merge_space() {
var length = arr.length;
var merge_state_first;
var num1 = null;
var num2 = null;
var merge_state_num = 0;
var merge_state_size = 0;
for (var i = 0; i < arr.length; i++) {
if (get(arr[i])[0] == 0) {
merge_state_num++;
if (merge_state_num == 1) {
merge_state_first = i;
}
if (merge_state_num > 1) {
merge_state_size += parseInt(get(arr[i])[2]);
//arr.splice(i,1);
if (num1 == null) {
num1 = i;
} else {
num2 = i;
}
//i=0;
}
//alert("arr.length"+arr.length+" i "+i+" merge_state_num "+merge_state_num);
if (merge_state_num == 2) {
if ((length - i) == 1) {
var sum = merge_state_size + parseInt(get(arr[merge_state_first])[2]);
set(merge_state_first, 1, 2, sum);
arr.splice(num1, 1);
merge_state_num = 0;
} else if (get(arr[i + 1])[0] != 0) {
var sum = merge_state_size + parseInt(get(arr[merge_state_first])[2]);
set(merge_state_first, 1, 2, sum);
arr.splice(num1, 1);
merge_state_num = 0;
}
}
if (merge_state_num == 3) {
//alert(num1+" "+num2);
var sum = merge_state_size + parseInt(get(arr[merge_state_first])[2]);
set(merge_state_first, 1, 2, sum);
arr.splice(num1, 1);
arr.splice(num2 - 1, 1);
merge_state_num = 0;
}
//}else if(merge_state_num=2){
// var sum=merge_state_size+parseInt(get(arr[merge_state_first])[2]);
// set(merge_state_first,2,sum);
// merge_state_num=0;
} else {
merge_state_num = 0;
}
}
}
//30 21
</script>
</body>
</html>