/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2007 Ola Bini <ola@ologix.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package org.jruby;
import org.jruby.anno.JRubyMethod;
import org.jruby.anno.JRubyModule;
import org.jruby.internal.runtime.ThreadService;
import org.jruby.javasupport.util.RuntimeHelpers;
import org.jruby.runtime.Block;
import org.jruby.runtime.BlockCallback;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.backtrace.BacktraceData;
import org.jruby.runtime.backtrace.TraceType.Gather;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.SignalFacade;
import org.jruby.util.NoFunctionalitySignalFacade;
@JRubyModule(name="Signal")
public class RubySignal {
private final static SignalFacade SIGNALS = getSignalFacade();
private final static SignalFacade getSignalFacade() {
try {
Class realFacadeClass = Class.forName("org.jruby.util.SunSignalFacade");
return (SignalFacade)realFacadeClass.newInstance();
} catch(Throwable e) {
return new NoFunctionalitySignalFacade();
}
}
// NOTE: The indicies here match exactly the signal values; do not reorder
public static final String[] NAMES = {
"EXIT", "HUP", "INT", "QUIT", "ILL", "TRAP", "ABRT", "EMT",
"FPE", "KILL", "BUS", "SEGV", "SYS", "PIPE", "ALRM", "TERM", "URG",
"STOP", "TSTP", "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",
"XFSZ", "VTALRM", "PROF", "WINCH", "INFO", "USR1", "USR2"};
public static void createSignal(Ruby runtime) {
RubyModule mSignal = runtime.defineModule("Signal");
mSignal.defineAnnotatedMethods(RubySignal.class);
//registerThreadDumpSignalHandler(runtime);
}
@JRubyMethod(required = 1, optional = 1, module = true)
public static IRubyObject trap(ThreadContext context, IRubyObject recv, IRubyObject[] args, Block block) {
Ruby runtime = recv.getRuntime();
runtime.getLoadService().require("jsignal_internal");
return RuntimeHelpers.invoke(context, runtime.getKernel(), "__jtrap", args, block);
}
@JRubyMethod(module = true)
public static IRubyObject list(ThreadContext context, IRubyObject recv) {
Ruby runtime = recv.getRuntime();
RubyHash names = RubyHash.newHash(runtime);
for (int i = 0; i < NAMES.length; i++) {
names.op_aset(context, runtime.newString(NAMES[i]), runtime.newFixnum(i));
}
// IOT is also 6
names.op_aset(context, runtime.newString("IOT"), runtime.newFixnum(6));
// CLD is also 20
names.op_aset(context, runtime.newString("CLD"), runtime.newFixnum(20));
return names;
}
@JRubyMethod(name = "__jtrap_kernel", required = 2, module = true)
public static IRubyObject __jtrap_kernel(final IRubyObject recv, IRubyObject block, IRubyObject sig) {
return SIGNALS.trap(recv, block, sig);
}
private static void registerThreadDumpSignalHandler(final Ruby runtime) {
final String threadDumpSignal = runtime.getInstanceConfig().getThreadDumpSignal();
if (threadDumpSignal != null && threadDumpSignal.length() > 0) {
SIGNALS.trap(runtime, new BlockCallback() {
public IRubyObject call(ThreadContext context, IRubyObject[] args, Block block) {
System.err.println("Ruby Thread Dump");
final ThreadService threadService = runtime.getThreadService();
RubyThread[] thrs = threadService.getActiveRubyThreads();
for (RubyThread th : thrs) {
System.err.println("\n" + th);
RubyException exc = new RubyException(runtime, runtime.getRuntimeError(), "");
ThreadContext tc = threadService.getThreadContextForThread(th);
if (tc != null) {
exc.setBacktraceData(new BacktraceData(th.javaBacktrace(), tc.createBacktrace2(0, false), false, false, Gather.NORMAL));
exc.printBacktrace(System.err);
} else {
System.err.println(" [no longer alive]");
}
}
return runtime.getNil();
}
}, threadDumpSignal);
}
}
}// RubySignal