simple pool

From llbird's C/C ++ world This is an experimental program. Although the algorithm implementation is weak, when the compiler is optimized, The performance is much better than the memory management with global new Delete. I have considered multithreading here. It seems that the memory pool can significantly improve the performance of a program that uses a large amount of memory allocation; If you have time, I will improve the algorithm. if you can see

When implementing web server, you can create a thread pool to concurrently process HTTP requests from the client. The Code is as follows: For (I = 0; I Concurrent thread processing is as follows: Void * worker (int n)

to use the lock to the second person after completing the task, directly exit the room, and the door is locked ~ Don't worry ~ The door will automatically open, as long as the previous person is no longer in the room ~ Next, let's talk about interlocked. The official explanation is "increment or decrease an atomic operation on a variable and save it". The atomic operation concept is that there is only one thread operating on this variable ~ Other threads are not allowed to intervene. When an

In practice, the new thread is rarely executed for multithreading, but instead the thread pool is created and the thread pool resource is called. Just like connecting to a database, never say, using JDBC to establish a connection, but using a database connection pool, Netty communication is also built a channel pool

#include #include#include#includeclassthreadpool{ Public: ThreadPool (intThreads =4): _stop (false) { for(intindex =0; index index) {_workers.emplace_back (Std::thread (Std::bind (threadpool::threadfunc, This))); } } voidAddTask (Conststd::functionvoid() > Task) {Std::unique_lockLK (_queuemutex); _taskqueue.emplace (Task); _taskcondition.notify_one (); //Wake up a thread } ~ThreadPool () {{Std::unique_lockLK (_queuemutex); _stop=true; _taskcondition.no

In the article buffering technology mentioned whether it is a single buffer, double buffering or circular buffering is only a process-specific buffer, and once the time-sharing parallelism of the operating system is taken into account, there is only one process buffer system at any given moment, while the buffer system for other processes is not working (or migrating to swap Cache peripheral disks either occupy physical memory and significantly reduce the amount of available physical memory, so

As a C + + rookie, the study of the implementation of the code for half a day, found a lot of grammar is not familiar, so added a lot of comments, for reference only. This code mainly by inheriting the Workthread class to implement its own thread code, through the Thread_pool class to manage the thread pool, the thread pool can not achieve dynamic change in the number of threads, there are some limitations.

The principle of thread pool everyone knows that the code is directly on the ^_^ Thread.h [CPP] View plain copy #ifndef __THREAD_H #define __THREAD_H #include nbsp;

Mainly divided into 3 parts, MemoryPool is the management memory pool class, block represents the memory blocks, chunk represents each storage small block. The relationship between them is that there is a connection in the MemoryPool that is preceded by a pointer to a starting block,block that forms a linked list structure through the next pointer, each containing a specified number of chunk. Allocates the data address in chunk each time the memory is

Thread Pool is an important concept. However, I found that there seems to be something missing from the discussion on this topic. Supplement the information and futureArticleThe reference I need here is a complete and simple introduction to the thread pool and the basis of various thread pools in. net. More details will not be discussed. We will have the opportun

In the previous article, we briefly discussed the role of the thread pool and some of the features of the CLR thread pool. But the basic concept of the thread pool is not over yet, and this time we'll add some of the necessary information to help us choose the right way to use the program.Independent thread PoolThe last time we discussed, in a. NET application, t

The thread pool is an important concept. But I find that there seems to be something missing in the discussion on this topic. As a supplement to the information, as well as the references required for future articles, I am here to talk about the thread pool in a complete and simple way, and. The basis of various thread pools in net. More detailed information will

"Pooling Technology" ramble-thread pool, memory pool, connection pool ...Category: C + + Win32 2008-10-25 21:31 5694 people read Comments (0) Favorites report alignment database connection pool NULL Delete performance tuning work Pooling technology-Simple point, is to save a

solve.What we usually want is a work queue with a fixed set of worker threads that uses wait () and notify () to inform the waiting line that threading's work has arrived. The work queue is usually implemented as a sort of linked list with the relevant monitor object. Listing 1 shows an example of a simple pooled work queue. Although the Thread API does not impose special requirements on the use of the Runnable interface, this pattern of using Runnab

after the task cache queue has been emptied or the execution has finished. 2. Implementation of the mandate Before we get to the whole process of putting a task on the thread pool to a task execution, let's take a look at some of the other more important member variables in the Threadpoolexecutor class: private final blockingqueue The role of each variable has been marked out, here to focus on the corepoolsize, Maximumpoolsize, largestpoolsize three

, a request for new is issued, but the request is queued until there is an idle connection or a connection request timeout in the connection pool.Efficiency issues with connections:Q: If you can control the connection, how to control, very simple, now every time I use database access, will be new and close, I am worried that this efficiency is not very low ah, want to improve efficiency in connection, how to operate it.A: When using the connection

The timeout has reached. The timeout time has reached, but the connection has not been obtained from the pool. This may occur because all pool connections are in use and the maximum pool size is reached. Solution1. Close the unclosed connection in the code.2. Expand the sharing pool as follows:The solution is to modify

methods use cursorablelinkedlist as the container, softreferenceobjectpool uses arraylist as the container, creates all pooled objects at a time, and processes softreference on objects in the container, this ensures that when the memory is sufficient, the pool object will not be easily reclaimed by JVM garbage, so as to have a strong cache capability. the last two types Use stack as containers. an object pool