Just as each process has a process ID, each thread has a thread ID. Unlike the process ID, which is unique within the system, the thread ID is only meaningful in the context of the process to which it belongs.The process ID is represented by using
The identifier of the thread is the thread ID, the ID type of the thread is Std::thread::id, and can be obtained in two ways. The first is the thread object, which can be associated with threads, that calls object.get_id (), or if object does not
In the case of multi-threaded implementation, pthread_t is used as the abstract type and is specified as the whole line with a length of 4 as the thread ID.
In the thread implementation of some iseries servers, the thread ID is a 64-bit integer
I used the second method, which is very convenient: # define gettid () syscall (_ nr_gettid) Where gettid () is used after linux2.4, linux uses nptl as its own thread library. to be compatible with the POSIX standard, there are two domain tgid and
Difference between thread ID and thread handle (reproduced)
The following are some conclusions:
● Createthread () API is used to create a thread. The API returns the same thread handle and thread ID ). The thread handle has full access to create a
Most of the information provided on the Internet is provided to find the thread ID, which is limited to the ID of the thread object inside the Java program, rather than the thread ID of the entire system, it was originally expected that the thread
The following are some conclusions:
● Createthread () API is used to create a thread. The API returns the same thread handle and thread ID ). The thread handle has full access to create a thread object. When a thread is running, the thread ID
1#include 2#include 3#include 4#include 5#include string.h>6 pthread_t Ntid;7 /**8 * Function: Print process ID, print thread ID. 9 * Note that the-lpthread parameter is added at compile time to invoke the static link library. Because Pthread is not
multithreading synchronization problem with synchronized keyword in Javain Java, multi-threading synchronization relies on the object lock mechanism, the Synchronized keyword is the use of encapsulating object locks to achieve mutually exclusive
A log is managed, and multiple records are recorded at a time. Can you obtain the current process or thread id and identify the records generated at the same time !! A log is managed, and multiple records are recorded at a time. Can you obtain the
I. OverviewPriority of the thread:When we create a thread, we specify a priority that affects the chance that the thread will execute.The meaning of the opportunity is that the thread executes more, but there is no guarantee that the thread will
Obtain the master thread ID using the process ID, which is only applicable to a single thread. Multi-thread should distinguish which is the main thread and distinguish the method to be verified
(1) it seems that the earliest starttime can be used,
Note: This part of the content is relatively basic, mainly to analyze several confusing OpenMP functions and understand them.
(1) determine the number of parallel regions:
Here, let's review the determination of the number of threads in the parallel
The book "Advanced Programming in UNIX environments" comes with many small and exquisiteProgramWhen I read this bookCodeI have rewritten it according to my own understanding (most of it is on the copybook) and deepened my understanding (it is too
Linux under the multi-threaded program occurs when Coredump, withGdb/path/to/program/file CoreYou can see all the threads[Email protected]:~/test/thread# gdb a.out CoreGNU gdb (GDB) 7.6.1Copyright (C) Free Software Foundation, Inc.License gplv3+:
Pthread_detach ()-mark a thread as detached to reclaim its resources when it terminates Synopsis
# Include
Int pthread_detach ( Pthread_t thread );
Parameters
Thread
Thread whose resources are to be reclaimed
This time in the company project in order to support the XP system colleague code used toGetThreadIdThis Microsoft API but the least supported version of this API isWindows version Windows Vista [Desktop Apps | UWP Apps] Windows Server 2003 [Desktop
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