com.sun.jna.platform.unix.aix.SharedObjectLoader Maven / Gradle / Ivy
/* Copyright (c) 2020 Daniel Widdis, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna.platform.unix.aix;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import com.sun.jna.Library;
import com.sun.jna.Native;
/**
* Special treatment of shared objects inside AIX archive libraries and
* 32/64-bit variants preclude loading within the library interfaces.
*
* Package private as this should only be called by AIX libraries.
*/
final class SharedObjectLoader {
private SharedObjectLoader() {
}
static Perfstat getPerfstatInstance() {
Map options = getOptions();
try {
return Native.load("/usr/lib/libperfstat.a(shr_64.o)", Perfstat.class, options);
} catch (UnsatisfiedLinkError e) {
// failed 64 bit, try 32 bit
}
return Native.load("/usr/lib/libperfstat.a(shr.o)", Perfstat.class, options);
}
private static Map getOptions() {
int RTLD_MEMBER = 0x40000; // allows "lib.a(obj.o)" syntax
int RTLD_GLOBAL = 0x10000;
int RTLD_LAZY = 0x4;
Map options = new HashMap();
options.put(Library.OPTION_OPEN_FLAGS, RTLD_MEMBER | RTLD_GLOBAL | RTLD_LAZY);
return Collections.unmodifiableMap(options);
}
}