so, how to correlate them? Any mapping files or mechanism inside the device?
On Jul 1, 7:08 pm, Kristopher Micinski <krismicin...@gmail.com> wrote: > No, that is all at the framework level, it's calling *into* the kernel > through the standard posix system call interface... (namely, open, > read, write, etc..) > > kris > > > > > > > > On Sun, Jul 1, 2012 at 10:07 PM, M <xuetao....@gmail.com> wrote: > > you mean these system calls are from kernel? > > > // --------------------------------------------------- > > // Native Codes > > // --------------------------------------------------- > > > static native void createSocketImpl(FileDescriptor fd, > > boolean preferIPv4Stack); > > > /* > > * Allocate a datagram socket in the IP stack. The socket is > > associated with > > * the <code>aFD</code>. > > * > > * @param aFD the FileDescriptor to associate with the socket > > @param > > * preferIPv4Stack IP stack preference if underlying platform is > > V4/V6 > > * @exception SocketException upon an allocation error > > */ > > static native void createDatagramSocketImpl(FileDescriptor aFD, > > boolean preferIPv4Stack) throws SocketException; > > > static native int readSocketImpl(FileDescriptor aFD, byte[] data, > > int offset, int count, int timeout) throws IOException; > > > static native int readSocketDirectImpl(FileDescriptor aFD, int > > address, > > int offset, int count, int timeout) throws IOException; > > > static native int writeSocketImpl(FileDescriptor fd, byte[] data, > > int offset, int count) throws IOException; > > > static native int writeSocketDirectImpl(FileDescriptor fd, int > > address, > > int offset, int count) throws IOException; > > > static native void setNonBlockingImpl(FileDescriptor aFD, > > boolean block); > > > On Jun 30, 10:58 pm, Kristopher Micinski <krismicin...@gmail.com> > > wrote: > >> On Fri, Jun 29, 2012 at 12:15 PM, M <xuetao....@gmail.com> wrote: > >> > Hi, alll, > > >> > Is there any mechanism inside the Android that could correlate > >> > Framework API with its corresponding kernel system calls? > > >> > For example, one Internet API call: java.net.Socket.<init>(). How > >> > could we know which system calls from kernel support such api calls > >> > from the framework? > > >> > Thanks for your help. > > >> > M > > >> In that specific example, and in many others, the framework is calling > >> down into native code through system wrappers (from harmony, is it > >> still called that...?) > > >> To handle these cases, when you get down to a baseline set of system > >> calls (i.e., the traditional unix ones..), the code is in classes like > >> OSNetworkSystem.java ..., for example (the first google result..): > > >>http://code.google.com/p/sipdroid/source/browse/trunk/src/org/sipdroi... > > >> There's a similar implementation for the filesystem, etc... > > >> kris > > > -- > > unsubscribe: android-kernel+unsubscr...@googlegroups.com > > website:http://groups.google.com/group/android-kernel -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
