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
