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am 389a440a: Backport ParcelFileDescriptor.createPipe() from master.

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Merge commit '389a440ad13f7b16e8f7c7f1670bdd55f1e2112a' into gingerbread-plus-aosp

* commit '389a440ad13f7b16e8f7c7f1670bdd55f1e2112a':
  Backport ParcelFileDescriptor.createPipe() from master.
This commit is contained in:
Jeff Hamilton
2010-10-21 21:08:20 -07:00
committed by Android Git Automerger
parent 6123e0f7c9 389a440ad1
commit de8635e4c4
3 changed files with 54 additions and 0 deletions
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19
core/java/android/os/ParcelFileDescriptor.java
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@@ -133,6 +133,25 @@ public class ParcelFileDescriptor implements Parcelable {
// Extracts the file descriptor from the specified socket and returns it untouched
private static native FileDescriptor getFileDescriptorFromSocket(Socket socket);
/**
* Create two ParcelFileDescriptors structured as a data pipe. The first
* ParcelFileDescriptor in the returned array is the read side; the second
* is the write side.
*/
public static ParcelFileDescriptor[] createPipe() throws IOException {
FileDescriptor[] fds = new FileDescriptor[2];
int res = createPipeNative(fds);
if (res == 0) {
ParcelFileDescriptor[] pfds = new ParcelFileDescriptor[2];
pfds[0] = new ParcelFileDescriptor(fds[0]);
pfds[1] = new ParcelFileDescriptor(fds[1]);
return pfds;
}
throw new IOException("Unable to create pipe: errno=" + -res);
}
private static native int createPipeNative(FileDescriptor[] outFds);
/**
* Retrieve the actual FileDescriptor associated with this object.
*