annotate graal/com.oracle.graal.debug/src/com/oracle/graal/debug/DebugMetric.java @ 23394:964f28c04d7b default tip

Don't fill the code cache with nmethods from CTW
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Fri, 05 Feb 2016 22:48:36 -0800
parents 7b4a47fcc4c0
children
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.debug;
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24
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25 /**
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26 * A counter for some value of interest.
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27 */
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28 public interface DebugMetric {
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29
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30 /**
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31 * Adds 1 to this counter if metering is {@link Debug#isMeterEnabled() enabled} or this is an
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32 * {@linkplain #isConditional() unconditional} metric.
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33 */
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34 void increment();
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35
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36 /**
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37 * Adds {@code value} to this counter if metering is {@link Debug#isMeterEnabled() enabled} or
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38 * this is an {@linkplain #isConditional() unconditional} metric.
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39 */
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40 void add(long value);
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41
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42 /**
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43 * Sets a flag determining if this counter is only enabled if metering is
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44 * {@link Debug#isMeterEnabled() enabled}.
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45 */
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46 void setConditional(boolean flag);
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47
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48 /**
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49 * Determines if this counter is only enabled if metering is {@link Debug#isMeterEnabled()
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50 * enabled}.
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51 */
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52 boolean isConditional();
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53
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54 /**
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55 * Gets the current value of this metric.
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56 */
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57 long getCurrentValue();
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58
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59 /**
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60 * Determines if this counter is enabled (either conditionally or unconditionally).
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61 */
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62 default boolean isEnabled() {
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63 return !isConditional() || Debug.isMeterEnabled();
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64 }
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65 }