Examples of com.sun.jna.Pointer

com.sun.jna.Pointer
An abstraction for a native pointer data type. A Pointer instance represents, on the Java side, a native pointer. The native pointer could be any type of native pointer. Methods such as write, read, getXXX, and setXXX, provide means to access memory underlying the native pointer.
While a constructor exists to create a Pointer from an integer value, it's not generally a good idea to be creating pointers that way. @author Sheng Liang, originator @author Todd Fast, suitability modifications @author Timothy Wall, robust library loading @see Function

    // size_t = 8
    public static Pointer mmap(long len, int prot, int flags, int fildes, long off)
            throws IOException {


        // we don't really have a need to change the recommended pointer.
        Pointer addr = new Pointer(0);


        Pointer result = Delegate.mmap(addr,
                                       new NativeLong(len),
                                       prot,
                                       flags,
                                       fildes,
                                       new NativeLong(off));

View Full Code Here

        int fd = voldemort.store.readonly.io.Native.getFd(in.getFD());
        if(logger.isDebugEnabled())
            logger.debug("File descriptor is: " + fd);


        // mmap a large file...
        Pointer addr = mmap(file.length(), PROT_READ, mman.MAP_SHARED | mman.MAP_ALIGN, fd, 0L);
        if(logger.isDebugEnabled())
            logger.debug("mmap address is: " + Pointer.nativeValue(addr));


        // try to mlock it directly
        mlock(addr, file.length());

View Full Code Here

                    continue;
                }          
                break;
            }
            int dwRead = pnBytesRead.getValue();
            Pointer pevlr = buffer;
            int maxRecords = 3;
            while (dwRead > 0 && maxRecords-- > 0) {
                EVENTLOGRECORD record = new EVENTLOGRECORD(pevlr);
                /*
                  System.out.println(record.RecordNumber.intValue()
                  + " Event ID: " + record.EventID.intValue()
                  + " Event Type: " + record.EventType.intValue()
                  + " Event Source: " + pevlr.getString(record.size(), true));
                */
                dwRead -= record.Length.intValue();
                pevlr = pevlr.share(record.Length.intValue());
            }
      }
        assertTrue("Unexpected error after reading event log: "
                   + new Win32Exception(rc),
                   rc == W32Errors.ERROR_HANDLE_EOF || rc == 0);

View Full Code Here

import com.sun.jna.PointerType;


public abstract class COMInvoker extends PointerType {


    protected int _invokeNativeInt(int vtableId, Object[] args) {
        Pointer vptr = this.getPointer().getPointer(0);
        // we take the vtable id and multiply with the pointer size (4 bytes on
        // 32bit OS)
        Function func = Function.getFunction(vptr.getPointer(vtableId
                * Pointer.SIZE));
        return func.invokeInt(args);
    }

View Full Code Here

        return func.invokeInt(args);
    }


    protected Object _invokeNativeObject(int vtableId, Object[] args,
            Class returnType) {
        Pointer vptr = this.getPointer().getPointer(0);
        // we take the vtable id and multiply with the pointer size (4 bytes on
        // 32bit OS)
        Function func = Function.getFunction(vptr.getPointer(vtableId
                * Pointer.SIZE));
        return func.invoke(returnType, args);
    }

View Full Code Here

                * Pointer.SIZE));
        return func.invoke(returnType, args);
    }
    
    protected void _invokeNativeVoid(int vtableId, Object[] args) {
        Pointer vptr = this.getPointer().getPointer(0);
        // we take the vtable id and multiply with the pointer size (4 bytes on
        // 32bit OS)
        Function func = Function.getFunction(vptr.getPointer(vtableId
                * Pointer.SIZE));
        func.invokeVoid(args);
    }

View Full Code Here

        public void setValue(String value) {
            this.getPointer().setWideString(0, value);
        }


        public String getValue() {
            Pointer pointer = this.getPointer();
            String str = null;
            if (pointer != null)
                str = pointer.getWideString(0);


            return str;
        }

View Full Code Here

        public void setValue(String value) {
            this.getPointer().setWideString(0, value);
        }


        public String getValue() {
            Pointer pointer = this.getPointer();
            String str = null;
            if (pointer != null)
                str = pointer.getWideString(0);


            return str;
        }

View Full Code Here

        public void setValue(String value) {
            this.getPointer().setWideString(0, value);
        }


        public String getValue() {
            Pointer pointer = this.getPointer();
            String str = null;
            if (pointer != null)
                str = pointer.getWideString(0);


            return str;
        }

View Full Code Here

        public void setValue(String value) {
            this.getPointer().setWideString(0, value);
        }


        public String getValue() {
            Pointer pointer = this.getPointer();
            String str = null;
            if (pointer != null)
                str = pointer.getWideString(0);


            return str;
        }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of com.sun.jna.Pointer

ae.sys.DirectBuffers

au.net.causal.maven.nativesecurity.encrypter.GnomeKeyring

ca.eandb.jdcp.worker.policy.win32.W32API$HANDLEByReference

ca.weblite.objc.Client

ca.weblite.objc.NSObject

ca.weblite.objc.RuntimeUtils

ca.weblite.objc.RuntimeUtilsTest

capstone.Capstone

com.humaorie.link.WindowsLinker

com.orientechnologies.nio.OJNADirectMemory

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.