Linux C notes (BOOK UNIX)
Chapter 1: Thread
① thread functions
1. pthread_self();
2. thread existing
you can get the value of rval_ptr just by pthread_join(pthread_t tht, void ** rval_ptr)
cancel a thread as the thread exits with PTHREAD_CANCELED in pthread_exit, this function only send a signal but not wait until the thread really exits
We can give a function to a thread with which the thread can invoke it when it exits. This
pthread_clean_push
These two functions must be in pairs in your function routines but not in the main function. And one thing should be mentioned as : the routine should not be returned but
pthread_detach(pthread_t tid)
4. Thread synchronization of thread
② thread. synchronics
pthread_mutex_t variable
pthread_mutex_destroy()
ii. Lock
pthread_mutex_trylock() return instantly
pthread_unlock()
pthread_rwlook_t
pthread_rwlock_init
pthread_rwlock_destroy
ii. Lock
pthread_rwlock_wrlook
pthread_rwlock_unlock
pthread_rwlock_tryrdlock
pthread_rwlock_trywrlock
3. Cond
i. initiation
pthread_cond_init(&pcndt, attr);
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例一：发送Signaling Packet：
Signaling Command是2个Bluetooth实体之间的L2CAP层命令传输。所以得Signaling Command使用CID 0x0001.
多个Command可以在一个C-frame（control frame）中发送。
如果要直接发送Signaling Command.需要建立SOCK_RAW类型的L2CAP连接Socket。这样才有机会自己填充Command Code，Identi ......
实现功能：当用户在本地客户端某目录内建立、修改、删除目录或文件、修改目录或文件的属性，只要执行相同的shell脚本，rsync就会自动找出有改动或删除的数据，将其传送到服务器上，使服务器端某目录内的数据跟本地客户端某目录内的数据保持一致。
★方式一：
一、服务器端（例：10.0.0.1*）：
1、创建用 ......
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <windows.h>
#include <iostream>
using namespace std;
class student{
private:
char name[20],addr[40];
char id_number[40],phone[20];
public:
void searchstud_info();
void ......
转：http://school.ogdev.net/ArticleShow.asp?categoryid=10&id=6019
函数指针数组的妙用
笔者在开发某软件过程中遇到这样一个问题，前级模块传给我二进制数据，输入参数为 char* buffer和 int length，buffer是数据的首地址，length表示这批数据的长度。数据的特点是：长度不定，类型不定，由第一个字节（buffer[0] ......
