Linux shared library Loading function
Link from: http://www.faqs.org/docs/Linux-mini/C++-dlopen.html
//1. == main.cpp =============================================
// How to build?
// g++ -o main main.cpp -ldl
//=======================================================
#include <iostream>
#include <dlfcn.h>
int main() {
using std::cout;
using std::cerr;
cout << "C++ dlopen demo\n\n";
// open the library
cout << "Opening hello.so...\n";
void* handle = dlopen("./hello.so", RTLD_LAZY);
if (!handle) {
cerr << "Cannot open library: " << dlerror() << '\n';
return 1;
}
// load the symbol
cout << "Loading symbol hello...\n";
typedef void (*hello_t)();
hello_t hello = (hello_t) dlsym(handle, "hello");
if (!hello) {
cerr << "Cannot load symbol 'hello': " << dlerror() <<
'\n';
dlclose(handle);
return 1;
}
// use it to do the calculation
cout << "Calling hello...\n";
hello();
// close the library
cout << "Closing library...\n";
dlclose(handle);
}
// 2=====hello.cpp ========================================
// How to build?
// g++ -c -fPIC hello.cpp
// g++ -shared -o hello.so
-fPIC hello.o
//======================================================
#include <
Ïà¹ØÎĵµ£º
¹Ù·½ÍøÕ¾£ºhttp://www.linuxvirtualserver.org/
°Ù¶È°Ù¿Æ£ºhttp://baike.baidu.com/view/645050.htm?fr=ala0_1_1
ת×Ô£ºhttp://server.csdn.net/n/20090827/4278.html
ÓÃLVS¹¹¼Ü¸ºÔؾùºâLinux¼¯ÈºÏµÍ³ linux lvs
ÓÃLVS¹¹¼Ü¸ºÔؾùºâLinux¼¯ÈºÏµÍ³ linux lvs
×÷ÕߣºÓຣ·¢
Ñ¡ÓõÄLVSʵ¼ÊÉÏÊÇÒ»ÖÖLinux²Ù×÷ÏµÍ³É ......
ʲôÊÇÐéÄâÖ÷»ú
ÐéÄâÖ÷»úÓÃÓÚÔÚÎïÀíµÄһ̨Ö÷»úÉÏÔËÐжà¸öÕ¾µã£¬Æ©È磺www.example1.com¡¢www.example2.com£¬Ò²¿ÉÒÔÊÇÕâÑùµÄ£ºwww.example.com¡¢blog.example.com¡£
ÐéÄâÖ÷»úÓÐÁ½ÖÖÀàÐÍ£ºIP-based ºÍname-based£¬Ç°ÕßÓÃÓÚͬһ̨Ö÷»úÉϵĶà¸öÕ¾µã¾ßÓв»Í¬µÄIP µØÖ·£¬ºóÕßÓÃÓÚͬһ̨Ö÷»úÉϵĶà¸öÕ¾µãʹÓÃͬһ¸öIP µØÖ ......
¡¡I2C×ÜÏß¾ßÓнṹ¼òµ¥Ê¹Ó÷½±ãµÄÌØµã¡£±¾ÎÄÃèÊöÁËlinuxÏÂI2CÇý¶¯µÄ½á¹¹£¬²¢ÔÚ´Ë»ù´¡Éϸø³öÁËI2CÉ豸Çý¶¯ºÍÓ¦ÓõÄʵÏÖ¡£
¡¡¡¡1 ÒýÑÔ
¡¡¡¡I2C (Inter£Integrated Circuit)×ÜÏßÊÇÒ»ÖÖÓÉPHILIPS¹«Ë¾¿ª·¢µÄÁ½Ïßʽ´®ÐÐ×ÜÏߣ¬ÓÃÓÚÁ¬½Ó΢¿ØÖÆÆ÷¼°ÆäÍâΧÉ豸¡£I2C×ÜÏß×îÖ÷ÒªµÄÓŵãÊÇÆä¼òµ¥ÐÔºÍÓÐЧÐÔ¡£ÓÉÓÚ½Ó¿ÚÖ±½ÓÔÚ×é¼þÖ ......
×î½üÔÚ¿´Linux 2.6.21Äں˵ÄI2CÇý¶¯£¬Ò²ÔÚÍøÉϲéÁËÒ»ÏÂ×ÊÁÏ£¬ÓдíÒ²Óжԣ¬ÓÐЩÐĵ㬼ǼÏÂÀ´°É¡£ÀïÃæÈÏʶ»òÐí¶àÓв»µ±Ö®´¦£¬»¹¿ÒÇëÖ¸Õý¡£
1. I2C ÐÒé
1.1 I2C×ÜÏß¹¤×÷ÔÀí
I2C×ÜÏßÊÇÓÉÊý¾ÝÏßSDAºÍʱÖÓSCL¹¹³ÉµÄ´®ÐÐ×ÜÏߣ¬¸÷ÖÖ±»¿ØÖÆÆ÷¼þ¾ù²¢ÁªÔÚÕâÌõ×ÜÏ ......
¿ì½Ý¼ü£ºctrl+c ctrl+d
1.shell ·ÖΪͼÐÎshellºÍÃüÁîshell ÃüÁîshell·ÖΪbashºÍcsh£¬Çл»µ½cshÓÃcsh£¬exit·µ»Øbash
2.telnet Ô¶³ÌµÇ½unix
telnet 192.168.0.25
login£ºhz0904 Óû§Ãû
password£ºsd0904 ÃÜÂë¹æÔò£º6-8¸ö×Ö·û£¬ÖÁÉÙ°üº¬×ÖĸÒÔ¼°1¸öÊý×Ö£¬²»ÄÜÓëµÇ¼ÃûÏàͬ
3.passwd£º ÐÞ¸ÄÃÜÂë>ÊäÈëÏÖÓпÚÁî>ÊäÈë ......