interesting:
Wow, the underlying principle and practice of the Java lock function sounds like a super invincible topic! I'm going to grab my coffee and keyboard right away and get ready to explore this amazing world.
First, let's talk about the underlying principles of Java locks. Did you know that Java locks are actually implemented through a mechanism called a "mutex". This mutex is like a super strict security guard, only one thread is allowed to enter the locked code block, and other threads can only wait in line outside. Like a popular restaurant, only one person can go in and eat, and everyone else can only drool at the door.
However, sometimes this security guard can be a little crazy. Did you know that there is a situation called "deadlock" that occurs when two or more threads wait for each other to release a lock. It's like two people are waiting for the other to speak first, but neither of them will speak, and they will only fall into infinite embarrassment. At this time, you need a "locksmith" to solve this problem.
Speaking of locksmiths, I remembered a joke. One day, a programmer went to a locksmith to fix his lock. The locksmith looked at the lock, then took out a key, and said to the programmer: "I will give you a special key, and you can open all the locks with it." The programmer happily took the key and left , But after a while, he came back to the locksmith and complained, "The key you gave me can't open any locks at all!" The locksmith smiled and said, "Of course, what I gave you is Java. locks, not real locks."
Well, just kidding, in fact Java's locks are very powerful and reliable. It can help us solve the problem of multi-threaded concurrent access to shared resources and ensure data consistency and correctness. However, using locks also requires some skill and experience. For example, if you use too many locks, it may cause performance degradation, just like going to the supermarket to buy vegetables during peak hours, there are huge crowds of people, and you can only wait in line slowly. Therefore, we need to choose the appropriate lock according to the specific scenario and needs, and