Get thread ID

1#include <pthread.h>2#include <unistd.h>3#include <stdio.h>4#include <stdlib.h>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 the default library for Linux systemsTen * gcc pthread.c-lpthread-o pthread One  */ A voidPrintids (Const Char*s) - { - pid_t pid; the pthread_t tid; -     //gets the current process ID -PID =getpid (); -     //gets the current thread ID
 +Tid =pthread_self ();//Get the ID of the thread itself -     //prints the current process ID, prints the current thread ID +printf"%s pid%u strerrortid%u (0x%x) \ n", S, A(unsignedint) PID, (unsignedint) Tid, (unsignedint) tid); at } -  - void*TH_FN (void*Arg) - { - Printids (ARG); -     returnNULL; in } -  to intMainvoid) + { -  the     intErr =0;

1 /*2 pthread_create function3 4 Thread creation function5 6 header files and function prototypes7 #include <pthread.h>8 int pthred_creat (pthread_t *restrict tidp,const pthread_attr_t *restric attr, void * (*START_RTN) (void *), void *restr ICT arg);9 Ten Parameters One The first parameter is a pointer to the thread identifier.  A The second parameter is used to set the thread properties.  - The third parameter is the starting address of the thread's running function.  - the last parameter is the parameter that runs the function.  the  - */

 *Err = Pthread_create (&ntid, NULL, TH_FN,"New Thread:"); $     if(Err! =0) {Panax Notoginsengfprintf (stderr,"errno:%s", Strerror (err)); -Exit1); the     } +Printids ("Main thread:"); A     //to not let the process end prematurely than the thread, the delay is 1 seconds to execute theSleep1); +     return 0; -}

1 Program Run Results 2 main thread:  37553814000384 (0xe3550700)3New thread:   37553805734656 (0xe2d6e700)

Get thread ID