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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;
/**
* Mac OS X specialization of {@link UnixDynamicLinkerImpl}
* utilizing OS X 's non POSIX flags and mode values.
*/
public final class MacOSXDynamicLinkerImpl extends UnixDynamicLinkerImpl {
private static final long RTLD_DEFAULT = -2L;
// static final long RTLD_NEXT = -1L;
private static final int RTLD_LAZY = 0x00001;
// static final int RTLD_NOW = 0x00002;
private static final int RTLD_LOCAL = 0x00004;
private static final int RTLD_GLOBAL = 0x00008;
@Override
public final long openLibraryLocal(String pathname, boolean debug) throws SecurityException {
// Note we use RTLD_LOCAL visibility to _NOT_ allow this functionality to
// be used to pre-resolve dependent libraries of JNI code without
// requiring that all references to symbols in those libraries be
// looked up dynamically via the ProcAddressTable mechanism; in
// other words, one can actually link against the library instead of
// having to dlsym all entry points. System.loadLibrary() uses
// RTLD_LOCAL visibility so can't be used for this purpose.
SecurityUtil.checkLinkPermission(pathname);
final long handle = dlopen(pathname, RTLD_LAZY | RTLD_LOCAL);
if( 0 != handle ) {
incrLibRefCount(handle, pathname);
} else if ( DEBUG || debug ) {
System.err.println("dlopen \""+pathname+"\" local failed, error: "+dlerror());
}
return handle;
}
@Override
public final long openLibraryGlobal(String pathname, boolean debug) throws SecurityException {
// Note we use RTLD_GLOBAL visibility to allow this functionality to
// be used to pre-resolve dependent libraries of JNI code without
// requiring that all references to symbols in those libraries be
// looked up dynamically via the ProcAddressTable mechanism; in
// other words, one can actually link against the library instead of
// having to dlsym all entry points. System.loadLibrary() uses
// RTLD_LOCAL visibility so can't be used for this purpose.
SecurityUtil.checkLinkPermission(pathname);
final long handle = dlopen(pathname, RTLD_LAZY | RTLD_GLOBAL);
if( 0 != handle ) {
incrLibRefCount(handle, pathname);
} else if ( DEBUG || debug ) {
System.err.println("dlopen \""+pathname+"\" global failed, error: "+dlerror());
}
return handle;
}
@Override
public final long lookupSymbolGlobal(String symbolName) throws SecurityException {
SecurityUtil.checkAllLinkPermission();
final long addr = dlsym(RTLD_DEFAULT, symbolName);
if(DEBUG_LOOKUP) {
System.err.println("DynamicLinkerImpl.lookupSymbolGlobal("+symbolName+") -> 0x"+Long.toHexString(addr));
}
return addr;
}
}
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