src/share/classes/sun/nio/ch/FileDispatcher.java

rev 8219 : 8024900: PPC64: Enable new build on AIX (jdk part)
8024854: PPC64: Basic changes and files to build the class library on AIX
Reviewed-by: alanb, prr, sla, chegar, michaelm, mullan, art, erikj
Contributed-by: luchsh@linux.vnet.ibm.com, spoole@linux.vnet.ibm.com, thomas.stuefe@sap.com

*** 34,44 ****
      public static final int NO_LOCK = -1;       // Failed to lock
      public static final int LOCKED = 0;         // Obtained requested lock
      public static final int RET_EX_LOCK = 1;    // Obtained exclusive lock
      public static final int INTERRUPTED = 2;    // Request interrupted
  
!     abstract int force(FileDescriptor fd, boolean metaData) throws IOException;
  
      abstract int truncate(FileDescriptor fd, long size) throws IOException;
  
      abstract long size(FileDescriptor fd) throws IOException;
  
--- 34,54 ----
      public static final int NO_LOCK = -1;       // Failed to lock
      public static final int LOCKED = 0;         // Obtained requested lock
      public static final int RET_EX_LOCK = 1;    // Obtained exclusive lock
      public static final int INTERRUPTED = 2;    // Request interrupted
  
!     // Calling fsync on an AIX file descriptor that is opened only for reading
!     // results in an error (EBADF: The FileDescriptor parameter is not a valid
!     // file descriptor open for writing.). Therefore, it is necessary to prevent
!     // the JVM from calling fsync for read-only file descriptors.
!     // The fsync system call is used indirectly in the force method of the file
!     // channel. The native method force moved from the file channel class to the
!     // file dispatcher class in JDK 7. Due to this, it is not as easy anymore to
!     // read the corresponding attribute of the file channel as it was done prior
!     // to JDK 7. For JDK 7 a new parameter is added to the force method that
!     // indicates whether a file is opened for writing.
!     abstract int force(FileDescriptor fd, boolean metaData, boolean writable) throws IOException;
  
      abstract int truncate(FileDescriptor fd, long size) throws IOException;
  
      abstract long size(FileDescriptor fd) throws IOException;