Can I execute C code in current Thread(process)?

Question

Hi all,
I want to execute a Linux command within current Thread, but Runtime.exec() will start a new process to execute the command specified.
Does JNI can execute any system command or any C program in current Thread?
BTW, I tried JNA, following code will start new process too:
public interface CLibrary extends Library {
CLibrary INSTANCE = (CLibrary)Native.loadLibrary((Platform.isWindows() ? "msvcrt" : "c"),CLibrary.class);
void printf(String format, Object... args);
void system(String cmd);
public static void main(String[] args) {
     CLibrary.INSTANCE.system("sleep 5s");
Can I execute the Linux command within current Thread with JNA?
Any anwser will be appreciated!! Thanks!!
Raymond Zeng
Edited by: raymond.zeng on Dec 2, 2009 8:19 AM

Answer 1

Hi sabre150,
Thank you very much!
In fact, the reason I want native code run in current process is that native code will lock some system resource(such as COM port), I want to manipulate that resource in Java code after calling native code. (native code may run in a new thread for a long time, in the same time, Java code may need to manipulate the resource in other thread)
It is not import about whether start a new thread or not, but I really want the native code will be executed in a same process, so OS will not prevent me to manipulate that resource.
Is there any smart solution to do this?
Thanks!
Raymond Zeng