1/*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.debug.internal;
24
25import static org.graalvm.compiler.debug.DebugCloseable.VOID_CLOSEABLE;
26
27import java.util.concurrent.TimeUnit;
28
29import org.graalvm.compiler.debug.Debug;
30import org.graalvm.compiler.debug.DebugCloseable;
31import org.graalvm.compiler.debug.DebugTimer;
32import org.graalvm.compiler.debug.TimeSource;
33import org.graalvm.compiler.debug.internal.method.MethodMetricsImpl;
34
35public final class TimerImpl extends AccumulatedDebugValue implements DebugTimer {
36    private final boolean intercepting;
37
38    /**
39     * Records the most recent active timer.
40     */
41    private static final ThreadLocal<CloseableCounterImpl> currentTimer = new ThreadLocal<>();
42
43    static class FlatTimer extends DebugValue implements DebugTimer {
44        private TimerImpl accm;
45
46        FlatTimer(String name, boolean conditional) {
47            super(name + "_Flat", conditional);
48        }
49
50        @Override
51        public String toString(long value) {
52            return valueToString(value);
53        }
54
55        @Override
56        public TimeUnit getTimeUnit() {
57            return accm.getTimeUnit();
58        }
59
60        @Override
61        public DebugCloseable start() {
62            return accm.start();
63        }
64
65        @Override
66        public String rawUnit() {
67            return "us";
68        }
69
70        @Override
71        public String toRawString(long value) {
72            return valueToRawString(value);
73        }
74    }
75
76    public TimerImpl(String name, boolean conditional, boolean intercepting) {
77        super(name, conditional, new FlatTimer(name, conditional));
78        ((FlatTimer) flat).accm = this;
79        this.intercepting = intercepting;
80    }
81
82    @Override
83    public DebugCloseable start() {
84        if (!isConditional() || Debug.isTimeEnabled()) {
85            AbstractTimer result = intercepting ? new InterceptingTimer(this) : new Timer(this);
86            currentTimer.set(result);
87            return result;
88        } else {
89            return VOID_CLOSEABLE;
90        }
91    }
92
93    public static String valueToString(long value) {
94        return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10);
95    }
96
97    @Override
98    public DebugTimer getFlat() {
99        return (FlatTimer) flat;
100    }
101
102    @Override
103    public String toString(long value) {
104        return valueToString(value);
105    }
106
107    @Override
108    public TimeUnit getTimeUnit() {
109        return TimeUnit.NANOSECONDS;
110    }
111
112    private abstract class AbstractTimer extends CloseableCounterImpl implements DebugCloseable {
113
114        private AbstractTimer(AccumulatedDebugValue counter) {
115            super(currentTimer.get(), counter);
116        }
117
118        @Override
119        public void close() {
120            super.close();
121            currentTimer.set(parent);
122        }
123    }
124
125    private final class Timer extends AbstractTimer {
126
127        private Timer(TimerImpl timer) {
128            super(timer);
129        }
130
131        @Override
132        protected long getCounterValue() {
133            return TimeSource.getTimeNS();
134        }
135
136    }
137
138    private final class InterceptingTimer extends AbstractTimer {
139
140        private InterceptingTimer(TimerImpl timer) {
141            super(timer);
142        }
143
144        @Override
145        protected long getCounterValue() {
146            return TimeSource.getTimeNS();
147        }
148
149        @Override
150        protected void interceptDifferenceAccm(long difference) {
151            if (Debug.isMethodMeterEnabled()) {
152                MethodMetricsImpl.addToCurrentScopeMethodMetrics(counter.getName(), difference);
153            }
154        }
155
156        @Override
157        protected void interceptDifferenceFlat(long difference) {
158            if (Debug.isMethodMeterEnabled()) {
159                MethodMetricsImpl.addToCurrentScopeMethodMetrics(counter.flat.getName(), difference);
160            }
161        }
162    }
163
164    @Override
165    public String rawUnit() {
166        return "us";
167    }
168
169    @Override
170    public String toRawString(long value) {
171        return valueToRawString(value);
172    }
173
174    public static String valueToRawString(long value) {
175        return Long.toString(value / 1000);
176    }
177
178}
179