In this section, we'll explore the impact of pthread_self () on C programming language. To obtain the current thread's ID, developers leverage the pthread_self() function, which can differentiate between threads. However, if there are multiple threads threads and one of them finishes, its I...
Here, we will see the application of pthread_cond_wait () function. It is like when someone wants to fill the fuel his car. He has to wait until his car will be filled up with fuel. For this, we create two threads. One for filling the fuel in the car and for the car. We will...
I’m new to pthread and mutex lock. I used them before but in a single file (main.c that creates the threads and locks are in the same file as functions and memory that use the locks). How to define mutex lock in C files that depend on each other? Ideally, I wish not to change...
printf("string in arg = %s\n", in->s); returnNULL; } intmain(){ info_t* in =malloc(sizeof(info_t));// 申请内存空间 // 保存 HelloWorld 这个字符串 并且设置字符串的长度 in->s[0] ='H'; in->s[1] ='e'; in->s[2] ='l'; in->s[3] ='l'; in->s[4] ='o'; in-...
The do_something() routine eventually called pthread_exit(). Once I ran this piece of code, I instantly got an unknown exception notification. Long story short, here’s what I found out. When calling pthread_exit() in C++, it has to destruct all objects that has been created on stack....
Get Thread ID in C, Use the gettid Function to Get Thread ID in C. gettid is a Linux-specific system call that is provided using the function wrapper in the C program, and it returns the caller’s thread ID. The function takes no arguments similar to the pthread_self and returns the...
16 //which is also 4 in x86-32. 17 } 18 void cleanup(void *arg) 19 { 20 printf("cleanup:%s\n",(char *)arg); 21 } 22 23 void * thr_fn4(void *arg) 24 { 25 printf("thread 4 start\n"); 26 pthread_cleanup_push(cleanup, "thread 4 first handler"); ...
/* Process ID - thread group ID in kernel speak. */ pid_t pid; 2、pthread的基地址 还好,从代码中看到,当我们通过pthread_create创建一个线程的时候,C库无私的把这个结构给倒出来了。它就保存在pthread_create的第一个参数中,注意,不是返回值。所以我们就不用客气,直接使用这个就行了。有代码为证 ...
C Thread Example Program If we take the same example as discussed in part-II of this series : #include<stdio.h> #include<string.h> #include<pthread.h> #include<stdlib.h> #include<unistd.h> pthread_t tid[2]; void* doSomeThing(void *arg) ...
浅谈Pthread 最近由于疫情，⼀直宅在家⾥，⽇⼦过得⾮常划⽔。不过也是趁着这段时间的闲⼯夫，整理下并⾏计算⼀些基本点和常⽤实现⽅法。这⾥就不按照顺序展开了，先介绍下共享存储编程模式中的重要基础--pthread。共享存储 简要概述 并⾏程序与串⾏程序实现上的重要区别就是执⾏者的数量...