mutex object

Overview: Non-kernel object critical zones are very suitable for serializing access to data in a process because they are fast. However, we may want to synchronize some applications with other special events on the computer or operations executed in

Use conditional variables to improve efficiency This article is the last part of the POSIX thread trilogy series. Daniel will discuss in detail how to use conditional variables. The condition variable is a POSIX thread structure that enables you to "

Detailed description of condition Variables At the end of the previous article, I described a special problem: If the thread is waiting for a specific condition to happen, how should it handle this situation? It can repeatedly lock and unlock mutex

The mutex Kernel Object ensures that a thread exclusively accesses resources. The behavior characteristics of mutex kernel objects are similar to those of key code segments, but they are kernel objects, and key code segments are user mode objects,

Document directory Cancels a periodic timer. Example Kernel mutex Mutex is short for mutual exclusion. The kernel mutex provides a method (not necessarily the best) for serializing access to shared resources by multiple competing threads ). If

Many mutex objects If too many mutex objects are placed, the Code has no concurrency, and the running process is slower than the single-thread solution. If too few mutex objects are placed, the Code may encounter strange and embarrassing errors.

In a multi-threaded environment, each thread has its own local thread stack and register. This value may be incorrect if multiple threads can read and write the same resource. For example, when two threads read and write the same data, the data will

Create a thread that naturally has a corresponding system API to complete. CreateThread This function is used to create threads.The use of various parameters I will not say more, here directly to the example of my own practice1, the following is an

1. A process is an instance of a running program that never executes anything, just a container of threads. For a process to complete an operation, it must have a thread running in its environment that is responsible for executing the code contained

Synchronization object /*************************************** * ******************************** // * Synchronization object (Mutex) mutex object mechanism: If the mutex object is not owned by any thread, it is "marked". If it is owned by a thread,

Mutex of thread synchronization mode, mutex of Thread Synchronization The mutex volume is very similar to that in the critical section. Only threads with mutex objects can access Shared resources. Only one mutex object can be accessed, therefore, we

Original link: http://bbs.chinaunix.net/thread-4093341-1-1.htmlSync---criticalsection,mutex,event,semaphoressynchronization objects about threads can be divided into kernel objects and non-kernel objects, the biggest difference being that kernel

The software developed by the company needs to perform operations on the serial port. Each time the software is opened, the program automatically opens the serial port. Search Connect to the device on the serial port, but if the user does not

This is a very simple method. By creating a mutex object, you can also verify that an instance with this program is running.     Greatemutex function prototype: Handle createmutex (Lpsecurity_attributes lpmutexattributes,Bool

#include #include //using namespace std; DWORD WINAPI Fun1proc ( lpvoid lpparameter //thread data ); DWORD WINAPI Fun2proc ( lpvoid lpparameter //thread data ); int index=0; int tickets=100; HANDLE Hmutex; void Main () { HANDLE

began to study the most important multi-threaded read and write global data, combined with the example of the book, I modified to the following situation:Unit tst_thread3u;InterfaceUsesWindows, Messages, sysutils, variants, Classes, Graphics,

Why should I have TLS? The reason for this is that the global variables in the process and static variables defined within the function are shared variables that each thread can access. The memory content that is modified in one thread is in effect

The advantage of thread processing is that you can create applications that use multiple execution threads. For example, a process can have a user interface thread that manages user interaction and a third thread that executes other tasks while the

Abstract: the. NET Framework provides new classes to easily create multi-threaded applications. This article describes how to use the multi-Thread Programming Technology of Visual Basic. NET to develop applications with higher efficiency and faster

The mutex class in the system. Threading namespace is used to control the connections between multiple threads without conflict or repetition. We can regard mutex as a taxi and passengers as a thread. The passenger first waits for the car, then