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3. ¹Ø±Õ¶¯Ì¬Á´½Ó¿â£ºdlclose£¬º¯ÊýÔÐÍΪ: int dlclose (void *handle); ¸Ãº¯Êý½«¸Ã.soµÄÒýÓüÆÊý¼õÒ»£¬µ±ÒýÓüÆÊýΪ0ʱ£¬½«Ëü´ÓϵͳÖÐÐ¶ÔØ¡£
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´Óvoid *dlsym(void *handle, char *symbol); µÄ²ÎÊý¿ÉÒÔ¿´³ö£¬¸Ãº¯ÊýÖ»´«Á½¸ö²ÎÊý£ºÒ»¸öÖ¸ÏòsoµÄhandleºÍÒ»¸öº¯ÊýµÄsymbol£¬ËùÒÔsoÀïÃæµÄº¯ÊýÓ¦¸Ã²»ÔÊÐíÖØÔØ£¬·ñÔò¸ù¾ÝÒ»¸ösymbol²»ÄÜÈ·¶¨Ö¸ÏòÄǸöº¯Êý¡£ÎªÁ˼æÈÝCºÍC++ÔÚsoÖж¨Ò庯ÊýʱÓÃextern "C"£¬ÒÔÏÂÓÃÀý×Ó˵Ã÷ÈçºÎ´´½¨linux¶¯Ì¬Á´½Ó¿âsoÎļþ¡£
//test.h
#ifdef __cplusplus
extern "C"
{
#endif
void mytest();
#ifdef __cplusplus
}
#endif
//test.c
#include <stdio.h>
#include "mytest.h"
void mytest()
{
printf("mytest ok in .so file\n");
}
//main.cpp
#include <dlfcn.h>
#inclu
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