Hi All,
I have successfully activated the JNA based C-library bridge by including
package: ucar.nc2.jni.netcdf , particularly these files: JniIosp.java,
NCLibrary.java . Thanks for the head start John. I have also tested on
Linux and Mac since the current code only loads DLL's by adding load calls
for .so and .dylibs as below.
String osName = System.getProperty("os.name");
boolean isWin = osName != null
&& osName.toLowerCase().contains("win");
boolean isMacOS = osName != null
&& osName.toLowerCase().contains("mac");
boolean isLinux = osName != null
&& osName.toLowerCase().contains("linux");
if(isWin)
{
String dir = "C:/dev/tds/thredds/lib/binary/win32/";
System.setProperty("jna.library.path", dir);
System.load(dir + "zlib1.dll");
System.load(dir + "szlibdll.dll");
System.load(dir + "hdf5dll.dll");
System.load(dir + "hdf5_hldll.dll");
}
else if(isMacOS)
{
String dir = "/opt/local/lib/";
System.setProperty("jna.library.path", dir);
System.load(dir + "libz.dylib");
System.load(dir + "libsz.dylib");
System.load(dir + "libhdf5.dylib");
System.load(dir + "libhdf5_hl.dylib");
}
else if(isLinux)
{
String dir = "/usr/lib/";
System.setProperty("jna.library.path", dir);
System.load(dir + "x86_64-linux-gnu/libz.so");
}
The timing benchmarks indicate that the access is faster across the board
than pure Java for sub 1GB files, you can read details of the benchmark
here: http://forum.worldwindcentral.com/showpost.php?p=97182&postcount=6 .
I am hoping that the JNA bindings to the C-library will move from
experimental to testing to production soon.
Cheers,
Tisham.
