The Ring programming language version 1.9 book - Part 88 of 210

Ring Documentation, Release 1.9
28 IncLPJump x 18
29 POPExitMark
30 POPStep
31 NewLine 6
32 LoadFuncP test
33 Call 0
34 NoOperation
35 NewLine 8
36 PushV
37 FreeStack
38 ReturnNull
39 Func test
40 NewLine 9
41 FuncExE
42 PushC welcome
43 PushP 007D3670 0
44 PushV
45 SUM 0
46 Print
47 NewLine 10
48 PushPLocal o1 0
49 AssignmentPointer
50 New point
51 SetScope
52 PushV
53 BraceStart
54 LoadA x 0 58
56 PushN 10.000000
57 BeforeEqual 0
58 SetProperty 0 106
59 FreeStack
60 LoadA y 0 64
62 PushN 20.000000
63 BeforeEqual 0
65 FreeStack
66 LoadA z 0 70
68 PushN 30.000000
69 BeforeEqual 0
71 FreeStack
72 LoadFunc ismethod
73 LoadA self 0
74 PushV
75 PushC braceend
76 Call
77 NoOperation
78 PushV
79 JumpZ 85
80 LoadFunc braceend
81 Call
82 NoOperation
83 PushV
84 FreeStack
85 BraceEnd
73.4. Printing Final Intermediate Code 839

86 FreeStack
87 NewLine 11
88 FuncExE
89 PushPLocal o1 0
90 PushV
91 Print
92 NewLine 13
93 ReturnNull
94 Class point 007D8470
95 NewLabel
96 LoadA x 0
97 PushV
98 FreeStack
99 LoadA y 0
100 PushV
101 FreeStack
102 LoadA z 0
103 PushV
104 FreeStack
105 ReturnNull
107 LoadA ring_gettemp_var 0
108 PushV
109 PushC setx
110 Call 0
111 NoOperation
112 PushV
113 JumpZ 132
114 NewLine 2
116 LoadMethod setx
117 LoadA ring_settemp_var 0
118 PushV
119 Call 0 1
120 AfterCallMethod
121 PushV
122 FreeStack
123 NewLine 3
124 LoadA ring_tempflag_var 0 128
126 PushN 0.000000
127 BeforeEqual 0
128 Assignment 0 0
129 FreeStack
130 NewLine 4
131 Jump 140
132 NewLine 5
133 PushP 007D37D8 0 137
135 PushN 1.000000
136 BeforeEqual 0
137 Assignment 0 0
138 FreeStack
139 NewLine 6
140 Return
143 PushV

144 PushC sety
145 Call 0
146 NoOperation
147 PushV
148 JumpZ 167
149 NewLine 2
151 LoadMethod sety
153 PushV
154 Call 0 1
155 AfterCallMethod
156 PushV
157 FreeStack
158 NewLine 3
161 PushN 0.000000
162 BeforeEqual 0
163 Assignment 0 0
164 FreeStack
165 NewLine 4
166 Jump 175
167 NewLine 5
168 PushP 007D37D8 0 172
170 PushN 1.000000
171 BeforeEqual 0
172 Assignment 0 0
173 FreeStack
174 NewLine 6
175 Return
178 PushV
179 PushC setz
180 Call 0
181 NoOperation
182 PushV
183 JumpZ 202
184 NewLine 2
186 LoadMethod setz
188 PushV
189 Call 0 1
190 AfterCallMethod
191 PushV
192 FreeStack
193 NewLine 3
196 PushN 0.000000
197 BeforeEqual 0
198 Assignment 0 0
199 FreeStack
200 NewLine 4
201 Jump 210

202 NewLine 5
203 PushP 007D37D8 0 207
205 PushN 1.000000
206 BeforeEqual 0
207 Assignment 0 0
208 FreeStack
209 NewLine 6
210 Return
===================================================
73.5 CGI Support
Command:
ring test.ring -cgi
73.6 No Run
Command:
ring test.ring -norun
73.7 Printing Instruction Operation Code
Command:
ring test.ring -ins
Output:
===================================================
Operation : ReturnNull
PC : 1
Line Number : 1 , File test.ring
SP (After) : 0 - FuncSP : 0
LineNumber 1
===================================================
.....
.....
.....
Tip: Output removed from the previous example because it’s very large!
73.8 Performance
Command:
73.5. CGI Support 842

ring test.ring -performance
Output:
===================================================
Date : 2015/09/15 Time : 15:56:17
Clock : 0
===================================================
Hello World
1
2
3
4
5
6
7
8
9
10
welcome
x: 10.000000
y: 20.000000
z: 30.000000
===================================================
Date : 2015/09/15 Time : 15:56:17
Clock : 0
===================================================
73.9 Generate Object File
You can generate object file (.ringo) from your source code file (.ring) using -go option
Tip: You will get one object file to use for distributing/running your application which may contains one or many
ring source files that you can keep or distribute based on the application (commercial or open source).
Command:
ring test.ring -go
To run the compiled object file
ring test.ringo
73.9. Generate Object File 843

CHAPTER
SEVENTYFOUR
PERFORMANCE TIPS
In this chapter we will learn more about the Ring performance.
74.1 Introduction
Ring is designed to be a simple, small and flexible language in the first place, but also it is fast enough for many
applications.
Ring can do each of the next tasks in around 1 second using normal computers in the market during the last 5 years
1. Compiling 100,000 lines of code
2. Executing empty loop that count from 1 to 10,000,000
3. Executing 1000 search operation using linear search in a list contains 100,000 items, trying to find the last item
(The worst case)
4. Creating list contains 1,000,000 items then summing all of the list items
5. Adding 20,000 items to the ListWidget in GUI applications
6. Adding 5,000 nodes to the TreeWidget in GUI applications
7. Printing 10,000 messages to the terminal in Console applications
Also when we need more speed we can use C/C++ extensions!
Example:
? "Create list contains 100,000 items"
aList = 1:100000
? "Do 1000 search operation - Find the last item (Worst Case!)"
c = clock()
for t = 1 to 1000
find(alist,100000)
next
? "Time: " + ( clock() - c ) / clockspersecond() + " seconds"
Output:
Create list contains 100,000 items
Do 1000 search operation - Find the last item (Worst Case!)
Time: 0.87 seconds
844

Example:
load "guilib.ring"
func main
new qApp {
win = new qWidget() {
move(100,100) resize(500,500)
setWindowTitle("Many Tree Items - Testing Performance")
tree = new qTreeWidget(win) {
blocksignals(True) setUpdatesEnabled(False)
root = new qTreeWidgetItem()
root.setText(0,"The Root Node")
t1 = clock()
for t = 1 to 5000
oItem = new qTreeWidgetItem()
oItem.settext(0,"Item " + t)
root.addchild(oItem)
next
cTime = (clock()-t1)/clockspersecond()
setHeaderLabel("Creating 5000 nodes in " + cTime + " seconds.")
addTopLevelItem(root)
expanditem(root)
blocksignals(False) setUpdatesEnabled(True)
}
oLayout = new qVBoxLayout() {
addWidget(tree)
}
setLayout(oLayout)
show()
}
exec()
}
Output:
74.1. Introduction 845

74.2 Creating Lists
Example:
? "Create the list using the Range operator"
t1 = clock()
aList = 1:1000000
? "Time : " + ((clock()-t1)/clockspersecond()) + " seconds"
? "Create the list using the For loop"
t1 = clock()
aList = []
for x = 1 to 1000000
aList + x
next
? "Create the list using the list() function and the For loop"
t1 = clock()
aList = list(1000000)
for x = 1 to 1000000
aList[x] = x
next
Output:
74.2. Creating Lists 846

Create the list using the Range operator
Time : 0.48 seconds
Create the list using the For loop
Time : 0.79 seconds
Create the list using the list() function and the For loop
Time : 1.56 seconds
Note: Creating lists using the Range operator is faster than using the For loop or the list() function
74.3 Arithmetic Operations
Example:
? "Using * operator"
t1 = clock()
for x = 1 to 1000000
out = x * 2
next
? "Using *= operator"
t1 = clock()
for x = 1 to 1000000
out = x
out *= 2
next
Output:
Using * operator
Time : 1.34 seconds
Using *= operator
Time : 0.47 seconds
Note: Using the *= operator is faster that using the * operator
74.4 Using len() and For Loops
Example:
aList = 1:1000000
? "Using len() in the For loop"
t1 = clock()
for x = 1 to len(aList)
next
? "Using len() before the For loop"
t1 = clock()
nMax = len(aList)
74.3. Arithmetic Operations 847

for x = 1 to nMax
next
Output:
Using len() in the For loop
Time : 5.50 seconds
Using len() before the For loop
Time : 0.24 seconds
Note: Using len() before the For loop is faster than using len() in the For loop.
74.5 Calling Functions and Methods
Example:
? "calling 100000 functions"
t1 = clock()
for x = 1 to 100000
test()
next
o1 = new test
? "calling 100000 methods using the dot operator"
t1 = clock()
for x = 1 to 100000
o1.test()
next
? "calling 100000 methods using braces "
t1 = clock()
for x = 1 to 100000
o1 { test() }
next
func test
class test
func test
Output:
calling 100000 functions
Time : 0.28 seconds
calling 100000 methods using the dot operator
Time : 0.36 seconds
calling 100000 methods using braces
Time : 1.19 seconds
Note: Calling functions is faster than calling methods but the difference is very small.
74.5. Calling Functions and Methods 848

The Ring programming language version 1.9 book - Part 88 of 210

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The Ring programming language version 1.9 book - Part 88 of 210