Multithreading 04: mutexes and deadlocks
📕 Mutex and deadlock
1, Data sharing issues
First, let's look at the execution order of multithreading:
void TextThread() {
cout << "I am a thread:" << this_thread::get_id() << endl;
//In thread operation code
cout << "thread " << this_thread::get_id() << "End of operation" << endl;
}
int main()
{
...
Posted by rd321 on Thu, 12 May 2022 09:14:46 +0300
Thread series: two common methods of java multithreading
How to implement java multithreading? There are two common methods: 1) Integrate the Thread class and override the run() method 2) Implement the Runnable interface and the run() method of the interface
1, Integrate the Thread class and override the run() method
Start a new Thread by calling the start() method of Thread class and execute the ...
Posted by phpDVWeaver on Thu, 12 May 2022 08:56:14 +0300
Solutions to Java multithreading security problems
Causes of occurrence
When multiple statements are operating on the same thread to share data, one thread only executes part of multiple statements, and another thread participates in the execution. The error that caused the shared data.
Examples
class Window implements Runnable{
private int ticket = 10;
@Override
public void run ...
Posted by Nytemare on Thu, 12 May 2022 08:23:32 +0300
Use multithreading and RandomAccessfile to copy files in multithreading
Class RandomAccessFile
Instances of this class support reading and writing random access files. Random access to a file behaves like a large number of bytes stored in a file system. There is a cursor, or index to an implicit array, called a file pointer; The input operation reads the bytes starting from the file pointer and causes the file poi ...
Posted by kreoton on Wed, 11 May 2022 11:51:50 +0300
Four ways to create threads in java
Let's first look at processes and threads Process is the smallest unit of computer scheduling resources Thread is the smallest unit of process scheduling resources. A process has at least one thread
Four ways to create threads in java
1. Inherit the Thread class and override the run() method. The run method is the task to be executed
Ad ...
Posted by RwpTechAdMin on Wed, 11 May 2022 05:17:27 +0300
An example to let you see the randomness of thread scheduling
Several basic knowledge points of thread scheduling
When multi-threaded concurrent execution, many students do not know what problems will be caused by the randomness of scheduling. It is necessary to know that if access to critical resources is not locked, it will lead to some emergencies or even deadlocks.
Regarding thread scheduling, you nee ...
Posted by Adrianphp on Tue, 10 May 2022 04:36:15 +0300
Python processes and threads
In order to run multiple tasks at the same time, python introduces the concept of multithreading. In Python, you can start multithreading mode in a convenient and quick way. Multithreading is often used in programs that conform to the concurrency mechanism, such as network programs. In order to further subdivide work ta ...
Posted by chrisprse on Sat, 07 May 2022 21:03:36 +0300
java multithreading Foundation
1, Thread and process, thread implementation
What is a thread?
To talk about threads, we need to know what a process is (a process contains threads. A process can have multiple threads. When the process ends, the thread must end, the thread ends, and the process does not necessarily end) Process: it is a program currently being executed. Fo ...
Posted by spikypunker on Sat, 07 May 2022 01:55:53 +0300
CompletableFuture of Show me the code series
foreword
There are two common ways to create threads. Inheriting Thread or implementing the Runnable interface, but both methods have a flaw, that is, there is no return value, which means that we cannot know the execution result of the thread. Although it has been satisfied in simple scenarios, what should we do when we need to return a value ...
Posted by happs on Fri, 06 May 2022 21:24:40 +0300
Multi process and multi thread programming in Linux
Creation and application of thread in Linux
Multithreading programming technology in Linux is widely used. Multithreading can improve the running efficiency and convenience of programs. Multithreading programming technology is widely used in larger Linux programs. The communication problem between threads is how thread A passes messages to thr ...
Posted by svenski on Wed, 04 May 2022 11:07:14 +0300