com.jogamp.common.os.NativeLibrary Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of gluegen-rt Show documentation
Show all versions of gluegen-rt Show documentation
JNI binding generator (runtime)
/*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
* Copyright (c) 2011 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:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.jogamp.common.os;
import java.io.File;
import java.lang.reflect.Method;
import java.net.URISyntaxException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;
import jogamp.common.os.BionicDynamicLinkerImpl;
import jogamp.common.os.MacOSXDynamicLinkerImpl;
import jogamp.common.os.PlatformPropsImpl;
import jogamp.common.os.PosixDynamicLinkerImpl;
import jogamp.common.os.WindowsDynamicLinkerImpl;
import com.jogamp.common.util.IOUtil;
import com.jogamp.common.util.cache.TempJarCache;
/** Provides low-level, relatively platform-independent access to
shared ("native") libraries. The core library routines
System.load() and System.loadLibrary()
in general provide suitable functionality for applications using
native code, but are not flexible enough to support certain kinds
of glue code generation and deployment strategies. This class
supports direct linking of native libraries to other shared
objects not necessarily installed on the system (in particular,
via the use of dlopen(RTLD_GLOBAL) on Unix platforms) as well as
manual lookup of function names to support e.g. GlueGen's
ProcAddressTable glue code generation style without additional
supporting code needed in the generated library. */
public final class NativeLibrary implements DynamicLookupHelper {
private static final DynamicLinker dynLink;
private static final String[] prefixes;
private static final String[] suffixes;
static {
// Instantiate dynamic linker implementation
switch (PlatformPropsImpl.OS_TYPE) {
case WINDOWS:
dynLink = new WindowsDynamicLinkerImpl();
prefixes = new String[] { "" };
suffixes = new String[] { ".dll" };
break;
case MACOS:
dynLink = new MacOSXDynamicLinkerImpl();
prefixes = new String[] { "lib" };
suffixes = new String[] { ".dylib", ".jnilib" };
break;
case ANDROID:
dynLink = new BionicDynamicLinkerImpl();
prefixes = new String[] { "lib" };
suffixes = new String[] { ".so" };
break;
/*
case FREEBSD:
case SUNOS:
case HPUX:
case OPENKODE:
case LINUX: */
default:
dynLink = new PosixDynamicLinkerImpl();
prefixes = new String[] { "lib" };
suffixes = new String[] { ".so" };
break;
}
}
// Platform-specific representation for the handle to the open
// library. This is an HMODULE on Windows and a void* (the result of
// a dlopen() call) on Unix and Mac OS X platforms.
private long libraryHandle;
// May as well keep around the path to the library we opened
private final String libraryPath;
private final boolean global;
// Private constructor to prevent arbitrary instances from floating around
private NativeLibrary(final long libraryHandle, final String libraryPath, final boolean global) {
this.libraryHandle = libraryHandle;
this.libraryPath = libraryPath;
this.global = global;
if (DEBUG) {
System.err.println("NativeLibrary.open(): Successfully loaded: " + this);
}
}
@Override
public final String toString() {
return "NativeLibrary[" + libraryPath + ", 0x" + Long.toHexString(libraryHandle) + ", global " + global + "]";
}
/** Opens the given native library, assuming it has the same base
name on all platforms, looking first in the system's search
path, and in the context of the specified ClassLoader, which is
used to help find the library in the case of e.g. Java Web Start. */
public static final NativeLibrary open(final String libName, final ClassLoader loader) {
return open(libName, libName, libName, true, loader, true);
}
/** Opens the given native library, assuming it has the same base
name on all platforms, looking first in the system's search
path, and in the context of the specified ClassLoader, which is
used to help find the library in the case of e.g. Java Web Start. */
public static final NativeLibrary open(final String libName, final ClassLoader loader, final boolean global) {
return open(libName, libName, libName, true, loader, global);
}
/** Opens the given native library, assuming it has the given base
names (no "lib" prefix or ".dll/.so/.dylib" suffix) on the
Windows, Unix and Mac OS X platforms, respectively, and in the
context of the specified ClassLoader, which is used to help find
the library in the case of e.g. Java Web Start. The
searchSystemPathFirst argument changes the behavior to first
search the default system path rather than searching it last.
Note that we do not currently handle DSO versioning on Unix.
Experience with JOAL and OpenAL has shown that it is extremely
problematic to rely on a specific .so version (for one thing,
ClassLoader.findLibrary on Unix doesn't work with files not
ending in .so, for example .so.0), and in general if this
dynamic loading facility is used correctly the version number
will be irrelevant.
*/
public static final NativeLibrary open(final String windowsLibName,
final String unixLibName,
final String macOSXLibName,
final boolean searchSystemPathFirst,
final ClassLoader loader) {
return open(windowsLibName, unixLibName, macOSXLibName, searchSystemPathFirst, loader, true);
}
public static final NativeLibrary open(final String windowsLibName,
final String unixLibName,
final String macOSXLibName,
final boolean searchSystemPathFirst,
final ClassLoader loader, final boolean global) {
final List possiblePaths = enumerateLibraryPaths(windowsLibName,
unixLibName,
macOSXLibName,
searchSystemPathFirst,
loader);
Platform.initSingleton(); // loads native gluegen-rt library
// Iterate down these and see which one if any we can actually find.
for (final Iterator iter = possiblePaths.iterator(); iter.hasNext(); ) {
final String path = iter.next();
if (DEBUG) {
System.err.println("NativeLibrary.open(global "+global+"): Trying to load " + path);
}
long res;
Throwable t = null;
try {
if(global) {
res = dynLink.openLibraryGlobal(path, DEBUG);
} else {
res = dynLink.openLibraryLocal(path, DEBUG);
}
} catch (final Throwable t1) {
t = t1;
res = 0;
}
if ( 0 != res ) {
return new NativeLibrary(res, path, global);
} else if( DEBUG ) {
if( null != t ) {
System.err.println("NativeLibrary.open: Caught "+t.getClass().getSimpleName()+": "+t.getMessage());
}
String errstr;
try {
errstr = dynLink.getLastError();
} catch (final Throwable t2) { errstr=null; }
System.err.println("NativeLibrary.open: Last error "+errstr);
if( null != t ) {
t.printStackTrace();
}
}
}
if (DEBUG) {
System.err.println("NativeLibrary.open(global "+global+"): Did not succeed in loading (" + windowsLibName + ", " + unixLibName + ", " + macOSXLibName + ")");
}
// For now, just return null to indicate the open operation didn't
// succeed (could also throw an exception if we could tell which
// of the openLibrary operations actually failed)
return null;
}
@Override
public final long dynamicLookupFunction(final String funcName) {
if ( 0 == libraryHandle ) {
throw new RuntimeException("Library is not open");
}
return dynLink.lookupSymbol(libraryHandle, funcName);
}
@Override
public final boolean isFunctionAvailable(final String funcName) {
if ( 0 == libraryHandle ) {
throw new RuntimeException("Library is not open");
}
return 0 != dynLink.lookupSymbol(libraryHandle, funcName);
}
/** Looks up the given function name in all loaded libraries. */
public static final long dynamicLookupFunctionGlobal(final String funcName) {
return dynLink.lookupSymbolGlobal(funcName);
}
/** Looks up the given function name in all loaded libraries. */
public static final boolean isFunctionAvailableGlobal(final String funcName) {
return 0 != dynLink.lookupSymbolGlobal(funcName);
}
/** Retrieves the low-level library handle from this NativeLibrary
object. On the Windows platform this is an HMODULE, and on Unix
and Mac OS X platforms the void* result of calling dlopen(). */
public final long getLibraryHandle() {
return libraryHandle;
}
/** Retrieves the path under which this library was opened. */
public final String getLibraryPath() {
return libraryPath;
}
/** Closes this native library. Further lookup operations are not
allowed after calling this method. */
public final void close() {
if (DEBUG) {
System.err.println("NativeLibrary.close(): closing " + this);
}
if ( 0 == libraryHandle ) {
throw new RuntimeException("Library already closed");
}
final long handle = libraryHandle;
libraryHandle = 0;
dynLink.closeLibrary(handle);
if (DEBUG) {
System.err.println("NativeLibrary.close(): Successfully closed " + this);
Thread.dumpStack();
}
}
/**
* Comparison of prefix and suffix of the given libName's basename
* is performed case insensitive
*
* @param libName the full path library name with prefix and suffix
* @param isLowerCaseAlready indicates if libName is already lower-case
*
* @return basename of libName w/o path, ie. /usr/lib/libDrinkBeer.so -> DrinkBeer on Unix systems, but null on Windows.
*/
public static final String isValidNativeLibraryName(final String libName, final boolean isLowerCaseAlready) {
final String libBaseName;
try {
libBaseName = IOUtil.getBasename(libName);
} catch (final URISyntaxException uriEx) {
throw new IllegalArgumentException(uriEx);
}
final String libBaseNameLC = isLowerCaseAlready ? libBaseName : libBaseName.toLowerCase();
int prefixIdx = -1;
for(int i=0; i prefixIdx; i++) {
if (libBaseNameLC.startsWith(prefixes[i])) {
prefixIdx = i;
}
}
if( 0 <= prefixIdx ) {
for(int i=0; i enumerateLibraryPaths(final String windowsLibName,
final String unixLibName,
final String macOSXLibName,
final boolean searchSystemPathFirst,
final ClassLoader loader) {
final List paths = new ArrayList();
final String libName = selectName(windowsLibName, unixLibName, macOSXLibName);
if (libName == null) {
return paths;
}
// Allow user's full path specification to override our building of paths
final File file = new File(libName);
if (file.isAbsolute()) {
paths.add(libName);
return paths;
}
final String[] baseNames = buildNames(libName);
if (searchSystemPathFirst) {
// Add just the library names to use the OS's search algorithm
for (int i = 0; i < baseNames.length; i++) {
paths.add(baseNames[i]);
}
}
// The idea to ask the ClassLoader to find the library is borrowed
// from the LWJGL library
final String clPath = findLibrary(libName, loader);
if (clPath != null) {
paths.add(clPath);
}
// Add entries from java.library.path
final String[] javaLibraryPaths =
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String[] run() {
int count = 0;
final String usrPath = System.getProperty("java.library.path");
if(null != usrPath) {
count++;
}
final String sysPath = System.getProperty("sun.boot.library.path");
if(null != sysPath) {
count++;
}
final String[] res = new String[count];
int i=0;
if (searchSystemPathFirst) {
if(null != sysPath) {
res[i++] = sysPath;
}
}
if(null != usrPath) {
res[i++] = usrPath;
}
if (!searchSystemPathFirst) {
if(null != sysPath) {
res[i++] = sysPath;
}
}
return res;
}
});
if ( null != javaLibraryPaths ) {
for( int i=0; i < javaLibraryPaths.length; i++ ) {
final StringTokenizer tokenizer = new StringTokenizer(javaLibraryPaths[i], File.pathSeparator);
while (tokenizer.hasMoreTokens()) {
addPaths(tokenizer.nextToken(), baseNames, paths);
}
}
}
// Add current working directory
final String userDir =
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
return System.getProperty("user.dir");
}
});
addPaths(userDir, baseNames, paths);
if (!searchSystemPathFirst) {
// Add just the library names to use the OS's search algorithm
for (int i = 0; i < baseNames.length; i++) {
paths.add(baseNames[i]);
}
}
// Add probable Mac OS X-specific paths
if (PlatformPropsImpl.OS_TYPE == Platform.OSType.MACOS) {
// Add historical location
addPaths("/Library/Frameworks/" + libName + ".Framework", baseNames, paths);
// Add current location
addPaths("/System/Library/Frameworks/" + libName + ".Framework", baseNames, paths);
}
return paths;
}
private static final String selectName(final String windowsLibName,
final String unixLibName,
final String macOSXLibName) {
switch (PlatformPropsImpl.OS_TYPE) {
case WINDOWS:
return windowsLibName;
case MACOS:
return macOSXLibName;
/*
case FREEBSD:
case DALVIK:
case SUNOS:
case HPUX:
case OPENKODE:
case LINUX: */
default:
return unixLibName;
}
}
private static final String[] buildNames(final String libName) {
// If the library name already has the prefix / suffix added
// (principally because we want to force a version number on Unix
// operating systems) then just return the library name.
final String libBaseNameLC;
try {
libBaseNameLC = IOUtil.getBasename(libName).toLowerCase();
} catch (final URISyntaxException uriEx) {
throw new IllegalArgumentException(uriEx);
}
int prefixIdx = -1;
for(int i=0; i prefixIdx; i++) {
if (libBaseNameLC.startsWith(prefixes[i])) {
prefixIdx = i;
}
}
if( 0 <= prefixIdx ) {
for(int i=0; i suffixIdx; i++) {
suffixIdx = libBaseNameLC.indexOf(suffixes[i]);
}
boolean ok = true;
if (suffixIdx >= 0) {
// Check to see if everything after it is a Unix version number
for (int i = suffixIdx + suffixes[0].length();
i < libName.length();
i++) {
final char c = libName.charAt(i);
if (!(c == '.' || (c >= '0' && c <= '9'))) {
ok = false;
break;
}
}
if (ok) {
return new String[] { libName };
}
}
}
final String[] res = new String[prefixes.length * suffixes.length +
( PlatformPropsImpl.OS_TYPE == Platform.OSType.MACOS ? 1 : 0 )];
int idx = 0;
for (int i = 0; i < prefixes.length; i++) {
for (int j = 0; j < suffixes.length; j++) {
res[idx++] = prefixes[i] + libName + suffixes[j];
}
}
if (PlatformPropsImpl.OS_TYPE == Platform.OSType.MACOS) {
// Plain library-base-name in Framework folder
res[idx++] = libName;
}
return res;
}
private static final void addPaths(final String path, final String[] baseNames, final List paths) {
for (int j = 0; j < baseNames.length; j++) {
paths.add(path + File.separator + baseNames[j]);
}
}
private static boolean initializedFindLibraryMethod = false;
private static Method findLibraryMethod = null;
private static final String findLibraryImpl(final String libName, final ClassLoader loader) {
if (loader == null) {
return null;
}
if (!initializedFindLibraryMethod) {
AccessController.doPrivileged(new PrivilegedAction