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/** Available and recommended on Mac OS X >= 10.6 Update 4 */
public static final int JAWT_MACOSX_USE_CALAYER = 0x80000000;
public static final VersionNumber JAWT_MacOSXCALayerMinVersion = new VersionNumber(10,6,4);
private int jawt_version_cached = 0;
public final int getCachedVersion() {
return jawt_version_cached;
}
/** Helper routine for all users to call to access the JAWT. */
public static JAWT getJAWT(final int jawt_version_flags) {
JAWTUtil.initSingleton();
// Workaround for 4845371.
// Make sure the first reference to the JNI GetDirectBufferAddress is done
// from a privileged context so the VM's internal class lookups will succeed.
return AccessController.doPrivileged(new PrivilegedAction<JAWT>() {
public JAWT run() {
int jawt_version_flags_mod = jawt_version_flags;
JAWT jawt = JAWT.create();
if( 0 != ( jawt_version_flags_mod & JAWT_MACOSX_USE_CALAYER ) ) {
jawt.setVersion(jawt_version_flags_mod);
if (JAWTFactory.JAWT_GetAWT(jawt)) {
jawt.jawt_version_cached = jawt.getVersion();
return jawt;
}
jawt_version_flags_mod &= ~JAWT_MACOSX_USE_CALAYER;
System.err.println("MacOSX "+Platform.OS_VERSION_NUMBER+" >= "+JAWT_MacOSXCALayerMinVersion+": Failed to use JAWT_MACOSX_USE_CALAYER");
}
jawt.setVersion(jawt_version_flags_mod);
if (!JAWTFactory.JAWT_GetAWT(jawt)) {
throw new RuntimeException("Unable to initialize JAWT: 0x"+Integer.toHexString(jawt_version_flags_mod));
}
jawt.jawt_version_cached = jawt.getVersion();
return jawt;
}
});
}
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