शैडोइंग अभ्यास: 🚫 Java Deadlock Explained: Why Your Code is Stuck 😱 (Beginners Must Watch!) - वीडियो के साथ अंग्रेजी बोलना सीखें
पाठ बनाया जा रहा है...
1
We have seen deadlock example.
2
We have given the example of the lock.
3
But we are going to read deadlock officially.
4
I will give you a example of how the code looks.
5
We will see deadlock doesn't work.
6
We will see how it will resolve.
7
First of all, what is formal definition?
8
In multi-threading, deadlock is a situation where the threats are always blocked.
9
And they depend on the other side.
10
For example, A and B, A has a pen and a paper.
11
A waits for B, when he gives a paper, then I start to write.
12
B waits for A, when he gives a pen, then I start to write.
13
Just, nothing is wrong.
14
One is waiting for another.
15
So, the work will not be wrong and wait for forever.
16
So, this is a condition called deadlock.
17
Formal, formal.
18
Formal, when it comes to match, the deadlock is called.
19
Mutual exclusion.
20
Sir, our critical section is called, which should be locked.
21
First thing is obvious.
22
Then there will be a wait.
23
Another thing is, Hold and wait.
24
A thread holding at least one resource is waiting to acquire.
25
Obviously.
26
Third thing is no preemption.
27
You can't remove pen or pencil.
28
You can't remove paper.
29
We haven't read this yet.
30
It's circular wait.
31
This is obvious.
32
The obvious thing is, they divide in 4 parts.
33
It's false.
34
But obviously, if someone's mind is bad, then they can ask.
35
Okay, sir.
36
So, theory has happened.
37
Sir, a real life example.
38
I have given you a class pen and a class paper.
39
What is written in pen?
40
Write with pen and paper.
41
It is a method.
42
It is called paper.finishedWriting.
43
Another class is class paper.
44
It is called write with write with paper and pen.
45
And then finish writing method.
46
I am going to show you the functionality.
47
What is written in the upper part?
48
I will go in the upper part.
49
I will make two threads.
50
Task 1.
51
The next thread is task 2.
52
In the main thread, a pen and a paper and the threads are made.
53
Then I will start.
54
I am giving a high level overview.
55
Thread 1 is using pen and is trying to use paper.
56
Thread 2 is using paper and trying to use pen.
57
And it's going infinitely.
58
I will close it to forcefully.
59
The condition is the same.
60
Two threads have two people.
61
One has pen and trying to use paper.
62
The other one has B.
63
The other one has paper and trying to use pen.
64
The solution is not coming.
65
This is deadlock.
66
Now, look at the code.
67
There are two methods, paper, and two threads.
68
Task 1 and Task 2.
69
We will create the object in that two objects.
70
Pen and paper.
71
Similarly with Task 2.
72
When we create the object in Task 2, we will create the object in the constructor.
73
Obviously, one pen will be and one paper.
74
So, two people are.
75
Thread 1 and Thread 2.
76
There are two things.
77
One pen and one paper.
78
Thread 1 is written in the first one.
79
One person has pen.
80
Pen.Write with pen and paper.
81
The other person has paper.
82
Now we are going to pen and paper class.
83
Pen has two methods.
84
Write with pen and paper and finish writing.
85
Paper has two methods.
86
Write with paper and pen and finish writing.
87
Pen has been written in thread 1.
88
Synchronize is put.
89
When a method is declared by synchronized keyword,
90
this method will acquire the intrinsic lock of the object the method belongs to.
91
Pen will acquire the method.
92
Pen will acquire the method.
93
And then, paper.finish writing.
94
This method will need paper and pen,
95
so it comes to paper and pen.
96
and he is trying to run pen.finish writing.
97
When will it run pen?
98
When it has a pen lock.
99
What do you mean?
100
It depends on the other one.
101
What is thread 1?
102
It has a pen.
103
And trying to use paper.
104
Similarly thread 2 is using paper and trying to use pen.
105
But nothing is happening.
106
Then we close it.
107
What is deadlock?
108
If it has not been done, then see it again.
109
I am saying it again.
110
Now I need to resolve this, I need to resolve this, deadlock is not necessary.
111
So what can I do?
112
There are many strategies.
113
What is common approach?
114
Ensure that all the threats are consistent order to acquire locks.
115
Consistent order means that multiple threats which are required to acquire locks and multiple resources,
116
they should always acquire the resources in the same sequence.
117
Class pen and paper Here is the lock acquired.
118
What is the lock?
119
The pen and paper are the same.
120
We will do the same work.
121
If we change the lock, then the result will be deadlock.
122
Now, Task 1 is going to lock pen and paper.
123
Task 2 is going to lock pen and pen.
124
What do we do?
125
We use the synchronized keyword.
126
We want to lock and pen.
127
We will say Task 2 is going to lock pen and pen.
128
Then, paper can lock.
129
This is the two things.
130
I will put it here.
131
It will make sure that thread 2 is going to lock pen.
132
When you have pen lock, it's a good thing.
133
But pen lock is a thread 1, no matter what you will do.
134
And paper lock will come, because thread to run not.
135
Because thread to run, you should have pen lock, then paper lock will acquire.
136
So, understand how now.
137
If we change ordering, consistent ordering,
138
lock will acquire, we can resolve the deadlock.
139
Okay?
140
Now, keep the tension so much.
141
Keep the tension so much.
142
Sir, we have a small example which we have resolved.
143
That's it.
144
Keep the tension so much.
145
Keep the tension so much.
146
Okay, sir.
✨ अनुशंसित वीडियो
C13
26 वाक्य
🔥 Java Multithreading Rapid Fire | Can You Answer These Interview Questions? #shorts
Business EnglishInterview EnglishUniversity Students
B2226 वाक्य
How to lock in (for real)
Business EnglishUniversity StudentsWorking Adults
C11
85 वाक्य
AI Can Write Code. And That’s the Problem.
Business EnglishUniversity StudentsWorking Adults
C11
345 वाक्य
What the heck is the event loop anyway? | Philip Roberts | JSConf EU
Business EnglishUniversity StudentsWorking Adults
C11
80 वाक्य
Python3 For Pentesting - Introduction
Business EnglishUniversity StudentsWorking Adults
B21
72 वाक्य
Fight brain-rot with Worked Examples
Business EnglishUniversity StudentsWorking Adults
C11
276 वाक्य
PLC Programming #4: Functions, Function Blocks & Organization Blocks Explained
Business EnglishUniversity StudentsWorking Adults
C11
96 वाक्य
Design Patterns in Java Theory
Business EnglishUniversity StudentsWorking Adults
C11
54 वाक्य
Traceroute: You're Probably Reading the Results Wrong
Business EnglishUniversity StudentsWorking Adults
C16
277 वाक्य
Distributed Transactions Explained: 2 Phase Commit vs Saga Pattern
Business EnglishUniversity StudentsWorking Adults
B21
103 वाक्य
you will never ask about pointers again after watching this video
Business EnglishUniversity StudentsWorking Adults
C14
230 वाक्य
Can Cursor's HARDCORE Review Skill Stop The Slop?
British AccentBusiness EnglishUniversity StudentsWorking Adults
प्रसंग और पृष्ठभूमि
इस वीडियो में, हम "डेडलॉक" की अवधारणा को समझने का प्रयास करते हैं, जो मल्टी-थ्रेडिंग में एक महत्वपूर्ण विषय है। वीडियो में बताया गया है कि कैसे दो थ्रेड एक-दूसरे के संसाधनों का इंतजार करते हैं और नतीजतन, दोनों फंस जाते हैं। यह समस्या न केवल प्रोग्रामिंग में बल्कि दैनिक जीवन में भी देखी जा सकती है। उदाहरण के लिए, जब व्यक्ति एक पेन और एक पेपर के लिए एक-दूसरे का इंतजार करता है। यह स्थिति "डेडलॉक" कहलाती है, जिससे किसी भी कार्य का पूरा होना मुश्किल हो जाता है।
दैनिक संचार के लिए शीर्ष 5 वाक्यांश
- मैं इंतज़ार कर रहा हूँ। (I am waiting.)
- आपके पास क्या है? (What do you have?)
- मुझे इसकी जरूरत है। (I need this.)
- क्या आप मुझे दे सकते हैं? (Can you give me?)
- ये क्यों हो रहा है? (Why is this happening?)
इन वाक्यांशों का उपयोग करके, आप अपनी दैनिक बातचीत को और सहज बना सकते हैं। यूट्यूब से अंग्रेजी सीखें और अपने संवाद कौशल को सुधारें।
चरण-दर-चरण छाया अभ्यास गाइड
इस वीडियो में डेडलॉक की अवधारणा को समझने के लिए, आप निम्नलिखित विधियों का उपयोग कर सकते हैं।
- वीडियो को ध्यान से सुनें: पहले वीडियो को बिना रुके सुनें। इससे आपको विषय की मूल बातें समझने में मदद मिलेगी।
- छाया बोलने का अभ्यास करें: वीडियो को फिर से चलाएं और हर वाक्य को दोहराएं। यह shadow speech तकनीक आपके उच्चारण में सुधार लाएगी।
- महत्वपूर्ण वाक्यांशों का उपयोग करें: ऊपर दिए गए वाक्यांशों को अपनी दैनिक बातचीत में शामिल करें।
- अपने साथियों के साथ अभ्यास करें: किसी दोस्त या साथी के साथ इन वाक्यांशों का अभ्यास करें।
- नियमितता बनाए रखें: हर दिन थोड़े समय के लिए अभ्यास करें ताकि आप अपने इंग्लिश बोलने की क्षमता में लगातार सुधार कर सकें।
इन तकनीकों के माध्यम से, आप न केवल अपने अंग्रेजी उच्चारण में सुधार करेंगे, बल्कि बातचीत में आत्मविश्वास भी महसूस करेंगे। अपने ज्ञान को बढ़ाते हुए, शैडोस्पीक तकनीक के साथ अपनी अंग्रेजी बोलने की क्षमता को एक नई दिशा दें।
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है | are always blocked · is called · is written |
| Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है | have seen · have given · haven't read |
शैडोइंग तकनीक क्या है?
शैडोइंग (Shadowing) एक विज्ञान-समर्थित भाषा सीखने की तकनीक है जो मूल रूप से पेशेवर दुभाषिया प्रशिक्षण के लिए विकसित की गई थी। विधि सरल लेकिन शक्तिशाली है: आप मूल अंग्रेज़ी ऑडियो सुनते हैं और तुरंत इसे ज़ोर से दोहराते हैं — जैसे वक्ता की छाया 1-2 सेकंड की देरी से। शोध से पता चलता है कि यह उच्चारण सटीकता, स्वर, लय, जुड़ी हुई ध्वनियाँ, सुनने की समझ और बोलने की प्रवाहशीलता में काफ़ी सुधार करता है।