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/**
* Copyright 2013 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.common.os;
import com.jogamp.common.util.SecurityUtil;
/* pp */ abstract class UnixDynamicLinkerImpl extends DynamicLinkerImpl {
//
// Package private scope of class w/ protected native code access
// and sealed jogamp.common.* package definition
// ensuring no abuse via subclassing.
//
/** Interface to C language function: <br> <code> int dlclose(void * ); </code> */
protected static native int dlclose(long arg0);
/** Interface to C language function: <br> <code> char * dlerror(void); </code> */
protected static native java.lang.String dlerror();
/** Interface to C language function: <br> <code> void * dlopen(const char * , int); </code> */
protected static native long dlopen(java.lang.String arg0, int arg1);
/** Interface to C language function: <br> <code> void * dlsym(void * , const char * ); </code> */
protected static native long dlsym(long arg0, java.lang.String arg1);
protected final long openLibraryImpl(String pathname, int dlSymFlags, boolean debug) throws SecurityException {
SecurityUtil.checkLinkPermission(pathname);
final long handle = dlopen(pathname, dlSymFlags);
if( 0 != handle ) {
incrLibRefCount(handle, pathname);
} else if ( DEBUG || debug ) {
System.err.println("dlopen \""+pathname+"\" failed, error: "+dlerror());
}
return handle;
}
protected final long lookupSymbolGlobalImpl(long dlSymGlobalFlag, String symbolName) throws SecurityException {
SecurityUtil.checkAllLinkPermission();
final long addr = dlsym(dlSymGlobalFlag, symbolName);
if(DEBUG_LOOKUP) {
System.err.println("DynamicLinkerImpl.lookupSymbolGlobal("+symbolName+") -> 0x"+Long.toHexString(addr));
}
return addr;
}
@Override
public final long lookupSymbol(long libraryHandle, String symbolName) throws IllegalArgumentException {
if( null == getLibRef( libraryHandle ) ) {
throw new IllegalArgumentException("Library handle 0x"+Long.toHexString(libraryHandle)+" unknown.");
}
final long addr = dlsym(libraryHandle, symbolName);
if(DEBUG_LOOKUP) {
System.err.println("DynamicLinkerImpl.lookupSymbol(0x"+Long.toHexString(libraryHandle)+", "+symbolName+") -> 0x"+Long.toHexString(addr));
}
return addr;
}
@Override
public final void closeLibrary(long libraryHandle) throws IllegalArgumentException {
if( null == decrLibRefCount( libraryHandle ) ) {
throw new IllegalArgumentException("Library handle 0x"+Long.toHexString(libraryHandle)+" unknown.");
}
dlclose(libraryHandle);
}
@Override
public final String getLastError() {
return dlerror();
}
}
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