作用:
dll数据共享在不同的进程
测试:
1、在dll 加上共享数据段,和测试数据
#pragma data_seg("share_data")
static int g_value = 0;
#pragma data_seg()
#pragma comment(linker, "/section:share_data,rws")
_declspec(dllexport) int i;
2、添加导出函数
_declspec(dllexport) void setValue(int value_set){
g_value = value_set;
i = value_set;
printf("%d:%d\n", g_value, i);
}
_declspec(dllexport) int getValue(){
return g_value;
}
setValue给i赋值
3、进程Process1:
#pragma comment(lib,"../Debug/MyTestProject.lib")
_declspec(dllimport) void setValue(int value);
_declspec(dllimport) int i;
int _tmain(int argc, _TCHAR* argv[])
{
setValue(100);
printf("%d\n", i);
getchar();
return 0;
}
4、进程Process2:
#pragma comment(lib,"../Debug/MyTestProject.lib")
_declspec(dllimport) int getValue();
_declspec(dllimport) int i;
int _tmain(int argc, _TCHAR* argv[])
{
printf("%d\n", getValue());
printf("%d\n", i);
return 0;
}
5、运行Process的同时运行Process会得到结果
100
0