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POSIXFactory.java
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POSIXFactory.java
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package org.jruby.ext.posix;
import com.kenai.jaffl.Library;
import com.kenai.jaffl.LibraryOption;
import java.util.HashMap;
import org.jruby.ext.posix.util.Platform;
import java.util.Map;
public class POSIXFactory {
static final String LIBC = Platform.IS_LINUX ? "libc.so.6" : Platform.IS_WINDOWS ? "msvcrt" : "c";
static final Map<LibraryOption, Object> defaultOptions = new HashMap<LibraryOption, Object>() {{
put(LibraryOption.TypeMapper, POSIXTypeMapper.INSTANCE);
put(LibraryOption.LoadNow, Boolean.TRUE);
}};
public static POSIX getPOSIX(POSIXHandler handler, boolean useNativePOSIX) {
POSIX posix = null;
if (useNativePOSIX) {
try {
if (Platform.IS_MAC) {
posix = loadMacOSPOSIX(handler);
} else if (Platform.IS_LINUX) {
posix = loadLinuxPOSIX(handler);
} else if (Platform.IS_FREEBSD) {
posix = loadFreeBSDPOSIX(handler);
} else if (Platform.IS_OPENBSD) {
posix = loadOpenBSDPOSIX(handler);
} else if (Platform.IS_SOLARIS) {
posix = loadSolarisPOSIX(handler);
} else if (Platform.IS_32_BIT) {// No 64 bit structures defined yet.
if (Platform.IS_WINDOWS) {
posix = loadWindowsPOSIX(handler);
}
}
// ENEBO: Should printing be done through a handler+log method?
if (handler.isVerbose()) {
if (posix != null) {
System.err.println("Successfully loaded native POSIX impl.");
} else {
System.err.println("Failed to load native POSIX impl; falling back on Java impl. Unsupported OS.");
}
}
} catch (Throwable t) {
if (handler.isVerbose()) {
System.err.println("Failed to load native POSIX impl; falling back on Java impl. Stacktrace follows.");
t.printStackTrace();
}
}
}
if (posix == null) {
posix = getJavaPOSIX(handler);
}
return posix;
}
public static POSIX getJavaPOSIX(POSIXHandler handler) {
return new JavaPOSIX(handler);
}
public static POSIX loadLinuxPOSIX(POSIXHandler handler) {
return new LinuxPOSIX(LIBC, new LinuxLibCProvider(), handler);
}
public static POSIX loadMacOSPOSIX(POSIXHandler handler) {
return new MacOSPOSIX(LIBC, new DefaultLibCProvider(), handler);
}
public static POSIX loadSolarisPOSIX(POSIXHandler handler) {
return new SolarisPOSIX(LIBC, new SolarisLibCProvider(), handler);
}
public static POSIX loadFreeBSDPOSIX(POSIXHandler handler) {
return new FreeBSDPOSIX(LIBC, new DefaultLibCProvider(), handler);
}
public static POSIX loadOpenBSDPOSIX(POSIXHandler handler) {
return new OpenBSDPOSIX(LIBC, new DefaultLibCProvider(), handler);
}
public static POSIX loadWindowsPOSIX(POSIXHandler handler) {
return new WindowsPOSIX(LIBC, new WindowsLibCProvider(), handler);
}
private static final class DefaultLibCProvider implements LibCProvider {
private static final class SingletonHolder {
public static LibC libc = Library.loadLibrary(LibC.class, defaultOptions, "c");
}
public final LibC getLibC() {
return SingletonHolder.libc;
}
}
private static final class LinuxLibCProvider implements LibCProvider {
private static final class SingletonHolder {
public static LibC libc = Library.loadLibrary(LinuxLibC.class, defaultOptions, "libc.so.6");
}
public final LibC getLibC() {
return SingletonHolder.libc;
}
}
private static final class SolarisLibCProvider implements LibCProvider {
private static final class SingletonHolder {
public static LibC libc = Library.loadLibrary(LibC.class, defaultOptions, "socket", "nsl", "c");
}
public final LibC getLibC() {
return SingletonHolder.libc;
}
}
private static final class WindowsLibCProvider implements LibCProvider {
static final class SingletonHolder {
public static LibC libc = Library.loadLibrary(WindowsLibC.class, getOptions(), "msvcrt");
}
public final LibC getLibC() {
return SingletonHolder.libc;
}
static final Map<LibraryOption, Object> getOptions() {
Map<LibraryOption, Object> options = new HashMap<LibraryOption, Object>(defaultOptions);
options.put(LibraryOption.FunctionMapper, new WindowsLibCFunctionMapper());
return options;
}
}
}