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Common Lisp implementation running on the JVM
/*
* Profiler.java
*
* Copyright (C) 2003-2005 Peter Graves
* $Id$
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
public class Profiler
{
static int sleep = 1;
// ### %start-profiler
// %start-profiler type granularity
public static final Primitive _START_PROFILER =
new Primitive("%start-profiler", PACKAGE_PROF, false)
{
@Override
public LispObject execute(LispObject first, LispObject second)
{
final LispThread thread = LispThread.currentThread();
Stream out = getStandardOutput();
out.freshLine();
if (profiling) {
out._writeLine("; Profiler already started.");
} else {
if (first == Keyword.TIME)
sampling = true;
else if (first == Keyword.COUNT_ONLY)
sampling = false;
else
return error(new LispError(
"%START-PROFILER: argument must be either :TIME or :COUNT-ONLY"));
Package[] packages = Packages.getAllPackages();
for (int i = 0; i < packages.length; i++) {
Package pkg = packages[i];
Symbol[] symbols = pkg.symbols();
for (int j = 0; j < symbols.length; j++) {
Symbol symbol = symbols[j];
LispObject object = symbol.getSymbolFunction();
if (object != null) {
object.setCallCount(0);
object.setHotCount(0);
LispObject methods = null;
if (object.typep(Symbol.STANDARD_GENERIC_FUNCTION) != NIL) {
methods =
Symbol.GENERIC_FUNCTION_METHODS.execute(object);
}
while (methods != null && methods != NIL) {
LispObject method = methods.car();
LispObject function =
Symbol.METHOD_FUNCTION.execute(method);
if (function != NIL) {
function.setCallCount(0);
function.setHotCount(0);
methods = methods.cdr();
}
}
}
}
}
if (sampling) {
sleep = Fixnum.getValue(second);
Runnable profilerRunnable = new Runnable() {
public void run()
{
profiling = true; // make sure we don't fall through on the first iteration
while (profiling) {
try {
thread.incrementCallCounts();
Thread.sleep(sleep);
}
//### FIXME exception
catch (InterruptedException e) {
Debug.trace(e);
}
}
}
};
Thread t = new Thread(profilerRunnable);
// Maximum priority doesn't hurt:
// we're sleeping all the time anyway
t.setPriority(Thread.MAX_PRIORITY);
new Thread(profilerRunnable).start();
}
out._writeLine("; Profiler started.");
}
return thread.nothing();
}
};
// ### stop-profiler
public static final Primitive STOP_PROFILER =
new Primitive("stop-profiler", PACKAGE_PROF, true)
{
@Override
public LispObject execute()
{
Stream out = getStandardOutput();
out.freshLine();
if (profiling) {
profiling = false;
out._writeLine("; Profiler stopped.");
} else
out._writeLine("; Profiler was not started.");
out._finishOutput();
return LispThread.currentThread().nothing();
}
};
}