mutex object

Multi-thread synchronization mutex (functionally the same as critial sections, but is a kernel object with slow access and can be called by different processes)A MutexA mutex object (mutex) kernel object ensures that the thread has exclusive access

1. Create a simple worker thread;In the view class, add the message map function to the mouse:AfxBeginThread ((Afx_threadproc) testthread,this);Then join the thread's entry function in the view class:UINT Testthread (LPVOID pparam){AfxMessageBox

When multiple threads access a shared resource or data at the same time, you need to consider thread synchronization, Synchronize () is running in a hidden window, if your task is busy here, your main window will block out, and Synchronize () just

A thread is a relatively independent and schedulable execution unit in a process. An application can have a main thread, a main thread can have multiple sub-threads, and a sub-thread can also have its own sub-threads, thus forming a multi-threaded

Understanding the role of pthread_cond_wait () is very important-it is the core of the POSIX thread signal sending system and the most difficult to understand.First, let's consider the following situation: the thread locks the mutex object to view

Thread Synchronization Technology.1. critical sections (critical segment). If there is a part in the source code that cannot be executed simultaneously by two or more threads, you can use the critical segment to serialize the code. It can only be

Tag: Object thread# Include # Include DWORD winapi fun1proc (lpvoid lparameter ); DWORD winapi fun2proc (lpvoid lparameter ); Int Index = 0; Int tickets = 100; Handle hmutex; // defines the mutex object handle. Int main () { Handle HT1; // thread-

Analysis on glib Content:

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

 I. general thread concepts A thread can be viewed as a lightweight process. All programs have a main thread, which is the control flow or execution thread of the process. In a multi-threaded program, the main thread can create one or more peer

Q: Why do you want to achieve this goal?A: Because some programs need to use the computer above the hardware, such as the serial card collection and so on. In this case, the program can only be in memoryThere is a copy, otherwise it will rob

Critical section Object from MSDNCritical Section ObjectsA critical section object provides synchronization similar to the provided by a Mutexes object, except that a critical sect Ion can is used only by the threads of a single process.Event, mutex,

Createmutex Function Check whether the current system has an instance of the specified process. If not, create a mutex. The createmutex () function can be used to create a famous or unknown mutex object. Its function prototype is VC statement

This series is intended to record windwos thread-related knowledge points, including thread basics, thread scheduling, thread synchronization, TLS, thread pool, etc.   Semaphore Kernel Object The semaphore kernel object is used to count resources.

(1) ProcessA process is an instance of a running application. It consists of two parts: a, the kernel object for managing the operating system of the process, and B, the address space of the process. Each process has an exclusive, protected 32 MB

The Creatthread function looks like thisHere we only use the third and fourth parameters, The third argument passes the address of a function and is the new thread we want to specify. The fourth parameter is a parameter pointer passed to the new

This article describes the VC multithreaded programming concepts and skills, to share with you for your reference. The specific analysis is as follows: First, multithreading programming essentials A thread is an execution path of a process that

A mutex is a kernel object that is used to ensure that a thread is exclusive of access to a resource, and that the mutex can be used for mutually exclusive access to resources in different processes.We can think of a mutex as a taxi and a passenger

Waitformultipleobjects is a very powerful function in windows. It can wait for almost all kernel objects in Windows (for descriptions and examples of this function, see msdn ,). However, this function requires some skills in usage. Prototype: DWORD

1. Synchronization between kernel objects and user modethe only disadvantage of using kernel objects is performance, when invoking kernel object functions, the calling thread must switch from user mode to kernel mode, which is quite