src/hotspot/share/runtime/perfData.hpp
author erikj
Tue, 12 Sep 2017 19:03:39 +0200
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/*
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 * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_RUNTIME_PERFDATA_HPP
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#define SHARE_VM_RUNTIME_PERFDATA_HPP
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#include "memory/allocation.inline.hpp"
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#include "runtime/perfMemory.hpp"
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#include "runtime/timer.hpp"
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#include "utilities/growableArray.hpp"
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/* jvmstat global and subsystem counter name space - enumeration value
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 * serve as an index into the PerfDataManager::_name_space[] array
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 * containing the corresponding name space string. Only the top level
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 * subsystem name spaces are represented here.
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 */
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enum CounterNS {
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  // top level name spaces
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  JAVA_NS,
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  COM_NS,
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  SUN_NS,
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  // subsystem name spaces
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  JAVA_GC,              // Garbage Collection name spaces
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  COM_GC,
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  SUN_GC,
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  JAVA_CI,              // Compiler name spaces
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  COM_CI,
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  SUN_CI,
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  JAVA_CLS,             // Class Loader name spaces
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  COM_CLS,
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  SUN_CLS,
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  JAVA_RT,              // Runtime name spaces
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  COM_RT,
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  SUN_RT,
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  JAVA_OS,              // Operating System name spaces
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  COM_OS,
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  SUN_OS,
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  JAVA_THREADS,         // Threads System name spaces
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  COM_THREADS,
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  SUN_THREADS,
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  JAVA_PROPERTY,        // Java Property name spaces
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  COM_PROPERTY,
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  SUN_PROPERTY,
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  NULL_NS,
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  COUNTERNS_LAST = NULL_NS
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};
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/*
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 * Classes to support access to production performance data
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 *
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 * The PerfData class structure is provided for creation, access, and update
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 * of performance data (a.k.a. instrumentation) in a specific memory region
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 * which is possibly accessible as shared memory. Although not explicitly
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 * prevented from doing so, developers should not use the values returned
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 * by accessor methods to make algorithmic decisions as they are potentially
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 * extracted from a shared memory region. Although any shared memory region
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 * created is with appropriate access restrictions, allowing read-write access
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 * only to the principal that created the JVM, it is believed that a the
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 * shared memory region facilitates an easier attack path than attacks
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 * launched through mechanisms such as /proc. For this reason, it is
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 * recommended that data returned by PerfData accessor methods be used
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 * cautiously.
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 *
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 * There are three variability classifications of performance data
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 *   Constants  -  value is written to the PerfData memory once, on creation
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 *   Variables  -  value is modifiable, with no particular restrictions
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 *   Counters   -  value is monotonically changing (increasing or decreasing)
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 *
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 * The performance data items can also have various types. The class
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 * hierarchy and the structure of the memory region are designed to
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 * accommodate new types as they are needed. Types are specified in
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 * terms of Java basic types, which accommodates client applications
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 * written in the Java programming language. The class hierarchy is:
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 *
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 * - PerfData (Abstract)
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 *     - PerfLong (Abstract)
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 *         - PerfLongConstant        (alias: PerfConstant)
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 *         - PerfLongVariant (Abstract)
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 *             - PerfLongVariable    (alias: PerfVariable)
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 *             - PerfLongCounter     (alias: PerfCounter)
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 *
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 *     - PerfByteArray (Abstract)
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 *         - PerfString (Abstract)
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 *             - PerfStringVariable
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 *             - PerfStringConstant
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 *
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 *
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 * As seen in the class hierarchy, the initially supported types are:
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 *
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 *    Long      - performance data holds a Java long type
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 *    ByteArray - performance data holds an array of Java bytes
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 *                used for holding C++ char arrays.
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 *
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 * The String type is derived from the ByteArray type.
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 *
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 * A PerfData subtype is not required to provide an implementation for
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 * each variability classification. For example, the String type provides
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 * Variable and Constant variability classifications in the PerfStringVariable
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 * and PerfStringConstant classes, but does not provide a counter type.
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 *
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 * Performance data are also described by a unit of measure. Units allow
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 * client applications to make reasonable decisions on how to treat
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 * performance data generically, preventing the need to hard-code the
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 * specifics of a particular data item in client applications. The current
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 * set of units are:
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 *
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 *   None        - the data has no units of measure
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 *   Bytes       - data is measured in bytes
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 *   Ticks       - data is measured in clock ticks
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 *   Events      - data is measured in events. For example,
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 *                 the number of garbage collection events or the
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 *                 number of methods compiled.
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 *   String      - data is not numerical. For example,
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 *                 the java command line options
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 *   Hertz       - data is a frequency
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 *
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 * The performance counters also provide a support attribute, indicating
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 * the stability of the counter as a programmatic interface. The support
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 * level is also implied by the name space in which the counter is created.
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 * The counter name space support conventions follow the Java package, class,
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 * and property support conventions:
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 *
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 *    java.*          - stable, supported interface
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 *    com.sun.*       - unstable, supported interface
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 *    sun.*           - unstable, unsupported interface
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 *
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 * In the above context, unstable is a measure of the interface support
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 * level, not the implementation stability level.
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 *
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 * Currently, instances of PerfData subtypes are considered to have
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 * a life time equal to that of the VM and are managed by the
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 * PerfDataManager class. All constructors for the PerfData class and
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 * its subtypes have protected constructors. Creation of PerfData
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 * instances is performed by invoking various create methods on the
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 * PerfDataManager class. Users should not attempt to delete these
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 * instances as the PerfDataManager class expects to perform deletion
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 * operations on exit of the VM.
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 *
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 * Examples:
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 *
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 * Creating performance counter that holds a monotonically increasing
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 * long data value with units specified in U_Bytes in the "java.gc.*"
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 * name space.
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 *
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 *   PerfLongCounter* foo_counter;
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 *
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 *   foo_counter = PerfDataManager::create_long_counter(JAVA_GC, "foo",
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 *                                                       PerfData::U_Bytes,
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 *                                                       optionalInitialValue,
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 *                                                       CHECK);
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 *   foo_counter->inc();
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 *
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 * Creating a performance counter that holds a variably change long
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 * data value with units specified in U_Bytes in the "com.sun.ci
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 * name space.
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 *
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 *   PerfLongVariable* bar_variable;
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 *   bar_variable = PerfDataManager::create_long_variable(COM_CI, "bar",
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.*                                                        PerfData::U_Bytes,
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 *                                                        optionalInitialValue,
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 *                                                        CHECK);
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 *
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 *   bar_variable->inc();
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 *   bar_variable->set_value(0);
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 *
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 * Creating a performance counter that holds a constant string value in
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 * the "sun.cls.*" name space.
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 *
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 *   PerfDataManager::create_string_constant(SUN_CLS, "foo", string, CHECK);
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 *
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 *   Although the create_string_constant() factory method returns a pointer
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 *   to the PerfStringConstant object, it can safely be ignored. Developers
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 *   are not encouraged to access the string constant's value via this
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 *   pointer at this time due to security concerns.
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 *
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 * Creating a performance counter in an arbitrary name space that holds a
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 * value that is sampled by the StatSampler periodic task.
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 *
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 *    PerfDataManager::create_counter("foo.sampled", PerfData::U_Events,
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 *                                    &my_jlong, CHECK);
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 *
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 *    In this example, the PerfData pointer can be ignored as the caller
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 *    is relying on the StatSampler PeriodicTask to sample the given
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 *    address at a regular interval. The interval is defined by the
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 *    PerfDataSamplingInterval global variable, and is applied on
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 *    a system wide basis, not on an per-counter basis.
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 *
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 * Creating a performance counter in an arbitrary name space that utilizes
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 * a helper object to return a value to the StatSampler via the take_sample()
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 * method.
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 *
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 *     class MyTimeSampler : public PerfLongSampleHelper {
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 *       public:
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 *         jlong take_sample() { return os::elapsed_counter(); }
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 *     };
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 *
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 *     PerfDataManager::create_counter(SUN_RT, "helped",
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 *                                     PerfData::U_Ticks,
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 *                                     new MyTimeSampler(), CHECK);
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 *
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 *     In this example, a subtype of PerfLongSampleHelper is instantiated
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 *     and its take_sample() method is overridden to perform whatever
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 *     operation is necessary to generate the data sample. This method
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 *     will be called by the StatSampler at a regular interval, defined
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 *     by the PerfDataSamplingInterval global variable.
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 *
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 *     As before, PerfSampleHelper is an alias for PerfLongSampleHelper.
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 *
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 * For additional uses of PerfData subtypes, see the utility classes
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 * PerfTraceTime and PerfTraceTimedEvent below.
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 *
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 * Always-on non-sampled counters can be created independent of
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 * the UsePerfData flag. Counters will be created on the c-heap
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 * if UsePerfData is false.
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 *
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 * Until further notice, all PerfData objects should be created and
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 * manipulated within a guarded block. The guard variable is
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 * UsePerfData, a product flag set to true by default. This flag may
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 * be removed from the product in the future.
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 *
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 */
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class PerfData : public CHeapObj<mtInternal> {
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  friend class StatSampler;      // for access to protected void sample()
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  friend class PerfDataManager;  // for access to protected destructor
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  public:
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    // the Variability enum must be kept in synchronization with the
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    // the com.sun.hotspot.perfdata.Variability class
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    enum Variability {
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      V_Constant = 1,
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      V_Monotonic = 2,
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      V_Variable = 3,
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      V_last = V_Variable
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    };
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    // the Units enum must be kept in synchronization with the
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    // the com.sun.hotspot.perfdata.Units class
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    enum Units {
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      U_None = 1,
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      U_Bytes = 2,
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      U_Ticks = 3,
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      U_Events = 4,
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      U_String = 5,
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      U_Hertz = 6,
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      U_Last = U_Hertz
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    };
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    // Miscellaneous flags
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    enum Flags {
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      F_None = 0x0,
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      F_Supported = 0x1    // interface is supported - java.* and com.sun.*
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    };
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  private:
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    char* _name;
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    Variability _v;
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    Units _u;
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    bool _on_c_heap;
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    Flags _flags;
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    PerfDataEntry* _pdep;
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  protected:
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    void *_valuep;
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    PerfData(CounterNS ns, const char* name, Units u, Variability v);
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    virtual ~PerfData();
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    // create the entry for the PerfData item in the PerfData memory region.
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    // this region is maintained separately from the PerfData objects to
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    // facilitate its use by external processes.
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    void create_entry(BasicType dtype, size_t dsize, size_t dlen = 0);
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    // sample the data item given at creation time and write its value
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    // into the its corresponding PerfMemory location.
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    virtual void sample() = 0;
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  public:
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    // returns a boolean indicating the validity of this object.
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    // the object is valid if and only if memory in PerfMemory
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    // region was successfully allocated.
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    inline bool is_valid() { return _valuep != NULL; }
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    // returns a boolean indicating whether the underlying object
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    // was allocated in the PerfMemory region or on the C heap.
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    inline bool is_on_c_heap() { return _on_c_heap; }
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    // returns a pointer to a char* containing the name of the item.
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    // The pointer returned is the pointer to a copy of the name
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    // passed to the constructor, not the pointer to the name in the
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    // PerfData memory region. This redundancy is maintained for
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    // security reasons as the PerfMemory region may be in shared
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    // memory.
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    const char* name() { return _name; }
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    // returns the variability classification associated with this item
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    Variability variability() { return _v; }
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    // returns the units associated with this item.
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    Units units() { return _u; }
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    // returns the flags associated with this item.
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    Flags flags() { return _flags; }
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    // returns the address of the data portion of the item in the
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    // PerfData memory region.
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    inline void* get_address() { return _valuep; }
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    // returns the value of the data portion of the item in the
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    // PerfData memory region formatted as a string.
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    virtual int format(char* cp, int length) = 0;
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};
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/*
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 * PerfLongSampleHelper, and its alias PerfSamplerHelper, is a base class
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 * for helper classes that rely upon the StatSampler periodic task to
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 * invoke the take_sample() method and write the value returned to its
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 * appropriate location in the PerfData memory region.
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 */
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class PerfLongSampleHelper : public CHeapObj<mtInternal> {
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  public:
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    virtual jlong take_sample() = 0;
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};
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typedef PerfLongSampleHelper PerfSampleHelper;
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/*
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 * PerfLong is the base class for the various Long PerfData subtypes.
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 * it contains implementation details that are common among its derived
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 * types.
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 */
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class PerfLong : public PerfData {
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  protected:
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    PerfLong(CounterNS ns, const char* namep, Units u, Variability v);
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  public:
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    int format(char* buffer, int length);
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    // returns the value of the data portion of the item in the
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    // PerfData memory region.
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    inline jlong get_value() { return *(jlong*)_valuep; }
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};
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/*
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 * The PerfLongConstant class, and its alias PerfConstant, implement
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 * a PerfData subtype that holds a jlong data value that is set upon
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 * creation of an instance of this class. This class provides no
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 * methods for changing the data value stored in PerfData memory region.
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 */
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class PerfLongConstant : public PerfLong {
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  friend class PerfDataManager; // for access to protected constructor
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  private:
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    // hide sample() - no need to sample constants
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    void sample() { }
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  protected:
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    PerfLongConstant(CounterNS ns, const char* namep, Units u,
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                     jlong initial_value=0)
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                    : PerfLong(ns, namep, u, V_Constant) {
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       if (is_valid()) *(jlong*)_valuep = initial_value;
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    }
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};
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typedef PerfLongConstant PerfConstant;
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/*
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 * The PerfLongVariant class, and its alias PerfVariant, implement
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 * a PerfData subtype that holds a jlong data value that can be modified
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 * in an unrestricted manner. This class provides the implementation details
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
 * for common functionality among its derived types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
class PerfLongVariant : public PerfLong {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
    jlong* _sampled;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
    PerfLongSampleHelper* _sample_helper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
    PerfLongVariant(CounterNS ns, const char* namep, Units u, Variability v,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
                    jlong initial_value=0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
                   : PerfLong(ns, namep, u, v) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
      if (is_valid()) *(jlong*)_valuep = initial_value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
    PerfLongVariant(CounterNS ns, const char* namep, Units u, Variability v,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
                    jlong* sampled);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    PerfLongVariant(CounterNS ns, const char* namep, Units u, Variability v,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
                    PerfLongSampleHelper* sample_helper);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
    void sample();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
    inline void inc() { (*(jlong*)_valuep)++; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
    inline void inc(jlong val) { (*(jlong*)_valuep) += val; }
34195
89011d12ebd3 8139595: MethodHandles::remove_dependent_nmethod is not MT safe
vlivanov
parents: 32614
diff changeset
   427
    inline void dec(jlong val) { inc(-val); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
    inline void add(jlong val) { (*(jlong*)_valuep) += val; }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13195
diff changeset
   429
    void clear_sample_helper() { _sample_helper = NULL; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
 * The PerfLongCounter class, and its alias PerfCounter, implement
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
 * a PerfData subtype that holds a jlong data value that can (should)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
 * be modified in a monotonic manner. The inc(jlong) and add(jlong)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
 * methods can be passed negative values to implement a monotonically
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
 * decreasing value. However, we rely upon the programmer to honor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
 * the notion that this counter always moves in the same direction -
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
 * either increasing or decreasing.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
class PerfLongCounter : public PerfLongVariant {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  friend class PerfDataManager; // for access to protected constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
    PerfLongCounter(CounterNS ns, const char* namep, Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
                    jlong initial_value=0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
                   : PerfLongVariant(ns, namep, u, V_Monotonic,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
                                     initial_value) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
    PerfLongCounter(CounterNS ns, const char* namep, Units u, jlong* sampled)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
                  : PerfLongVariant(ns, namep, u, V_Monotonic, sampled) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
    PerfLongCounter(CounterNS ns, const char* namep, Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
                    PerfLongSampleHelper* sample_helper)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
                   : PerfLongVariant(ns, namep, u, V_Monotonic,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
                                     sample_helper) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
typedef PerfLongCounter PerfCounter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
 * The PerfLongVariable class, and its alias PerfVariable, implement
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
 * a PerfData subtype that holds a jlong data value that can
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
 * be modified in an unrestricted manner.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
class PerfLongVariable : public PerfLongVariant {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
  friend class PerfDataManager; // for access to protected constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
    PerfLongVariable(CounterNS ns, const char* namep, Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
                     jlong initial_value=0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
                    : PerfLongVariant(ns, namep, u, V_Variable,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
                                      initial_value) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
    PerfLongVariable(CounterNS ns, const char* namep, Units u, jlong* sampled)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
                    : PerfLongVariant(ns, namep, u, V_Variable, sampled) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
    PerfLongVariable(CounterNS ns, const char* namep, Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
                     PerfLongSampleHelper* sample_helper)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
                    : PerfLongVariant(ns, namep, u, V_Variable,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
                                      sample_helper) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
    inline void set_value(jlong val) { (*(jlong*)_valuep) = val; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
typedef PerfLongVariable PerfVariable;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
 * The PerfByteArray provides a PerfData subtype that allows the creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
 * of a contiguous region of the PerfData memory region for storing a vector
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
 * of bytes. This class is currently intended to be a base class for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
 * the PerfString class, and cannot be instantiated directly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
class PerfByteArray : public PerfData {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
    jint _length;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
    PerfByteArray(CounterNS ns, const char* namep, Units u, Variability v,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
                  jint length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
class PerfString : public PerfByteArray {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
    void set_string(const char* s2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
    PerfString(CounterNS ns, const char* namep, Variability v, jint length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
               const char* initial_value)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
              : PerfByteArray(ns, namep, U_String, v, length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
       if (is_valid()) set_string(initial_value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
    int format(char* buffer, int length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
 * The PerfStringConstant class provides a PerfData sub class that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
 * allows a null terminated string of single byte characters to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
 * stored in the PerfData memory region.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
class PerfStringConstant : public PerfString {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
  friend class PerfDataManager; // for access to protected constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
  private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
    // hide sample() - no need to sample constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
    void sample() { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
    // Restrict string constant lengths to be <= PerfMaxStringConstLength.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
    // This prevents long string constants, as can occur with very
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
    // long classpaths or java command lines, from consuming too much
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
    // PerfData memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
    PerfStringConstant(CounterNS ns, const char* namep,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
                       const char* initial_value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
 * The PerfStringVariable class provides a PerfData sub class that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
 * allows a null terminated string of single byte character data
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
 * to be stored in PerfData memory region. The string value can be reset
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
 * after initialization. If the string value is >= max_length, then
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
 * it will be truncated to max_length characters. The copied string
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
 * is always null terminated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
class PerfStringVariable : public PerfString {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  friend class PerfDataManager; // for access to protected constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
    // sampling of string variables are not yet supported
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
    void sample() { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
    PerfStringVariable(CounterNS ns, const char* namep, jint max_length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
                       const char* initial_value)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
                      : PerfString(ns, namep, V_Variable, max_length+1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
                                   initial_value) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
    inline void set_value(const char* val) { set_string(val); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
 * The PerfDataList class is a container class for managing lists
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
 * of PerfData items. The intention of this class is to allow for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
 * alternative implementations for management of list of PerfData
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
 * items without impacting the code that uses the lists.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
 * The initial implementation is based upon GrowableArray. Searches
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
 * on GrowableArray types is linear in nature and this may become
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
 * a performance issue for creation of PerfData items, particularly
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
 * from Java code where a test for existence is implemented as a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
 * search over all existing PerfData items.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
 * The abstraction is not complete. A more general container class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
 * would provide an Iterator abstraction that could be used to
22551
9bf46d16dcc6 8025856: Fix typos in the GC code
jwilhelm
parents: 22234
diff changeset
   590
 * traverse the lists. This implementation still relies upon integer
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
 * iterators and the at(int index) method. However, the GrowableArray
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
 * is not directly visible outside this class and can be replaced by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
 * some other implementation, as long as that implementation provides
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
 * a mechanism to iterate over the container by index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
 */
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 7397
diff changeset
   596
class PerfDataList : public CHeapObj<mtInternal> {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
    // GrowableArray implementation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
    typedef GrowableArray<PerfData*> PerfDataArray;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
    PerfDataArray* _set;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
    // method to search for a instrumentation object by name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
    static bool by_name(void* name, PerfData* pd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
    // we expose the implementation here to facilitate the clone
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
    // method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
    PerfDataArray* get_impl() { return _set; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
    // create a PerfDataList with the given initial length
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
    PerfDataList(int length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
    // create a PerfDataList as a shallow copy of the given PerfDataList
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
    PerfDataList(PerfDataList* p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    ~PerfDataList();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
    // return the PerfData item indicated by name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
    // or NULL if it doesn't exist.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
    PerfData* find_by_name(const char* name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
    // return true if a PerfData item with the name specified in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
    // argument exists, otherwise return false.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
    bool contains(const char* name) { return find_by_name(name) != NULL; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
    // return the number of PerfData items in this list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
    int length() { return _set->length(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
    // add a PerfData item to this list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
    void append(PerfData *p) { _set->append(p); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
    // remove the given PerfData item from this list. When called
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
    // while iterating over the list, this method will result in a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
    // change in the length of the container. The at(int index)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    // method is also impacted by this method as elements with an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
    // index greater than the index of the element removed by this
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
    // method will be shifted down by one.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    void remove(PerfData *p) { _set->remove(p); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
    // create a new PerfDataList from this list. The new list is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
    // a shallow copy of the original list and care should be taken
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
    // with respect to delete operations on the elements of the list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
    // as the are likely in use by another copy of the list.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
    PerfDataList* clone();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
    // for backward compatibility with GrowableArray - need to implement
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    // some form of iterator to provide a cleaner abstraction for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
    // iteration over the container.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
    PerfData* at(int index) { return _set->at(index); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
 * The PerfDataManager class is responsible for creating PerfData
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
 * subtypes via a set a factory methods and for managing lists
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
 * of the various PerfData types.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
class PerfDataManager : AllStatic {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  friend class StatSampler;   // for access to protected PerfDataList methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
  private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
    static PerfDataList* _all;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    static PerfDataList* _sampled;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    static PerfDataList* _constants;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    static const char* _name_spaces[];
32614
b7b2407bc7e5 8049304: race between VM_Exit and _sync_FutileWakeups->inc()
dcubed
parents: 27680
diff changeset
   672
    static volatile bool _has_PerfData;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
    // add a PerfData item to the list(s) of know PerfData objects
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
    static void add_item(PerfData* p, bool sampled);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
    // return the list of all known PerfData items
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
    static PerfDataList* all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
    static int count() { return _all->length(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
    // return the list of all known PerfData items that are to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
    // sampled by the StatSampler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
    static PerfDataList* sampled();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
    static int sampled_count() { return _sampled->length(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
    // return the list of all known PerfData items that have a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    // variability classification of type Constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
    static PerfDataList* constants();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
    static int constants_count() { return _constants->length(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
    // method to check for the existence of a PerfData item with
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
    // the given name.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
    static bool exists(const char* name) { return _all->contains(name); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 13728
diff changeset
   698
    // method to search for a instrumentation object by name
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 13728
diff changeset
   699
    static PerfData* find_by_name(const char* name);
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 13728
diff changeset
   700
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
    // method to map a CounterNS enumeration to a namespace string
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
    static const char* ns_to_string(CounterNS ns) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
      return _name_spaces[ns];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
    // methods to test the interface stability of a given counter namespace
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
    static bool is_stable_supported(CounterNS ns) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
      return (ns != NULL_NS) && ((ns % 3) == JAVA_NS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
    static bool is_unstable_supported(CounterNS ns) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
      return (ns != NULL_NS) && ((ns % 3) == COM_NS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
    static bool is_unstable_unsupported(CounterNS ns) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
      return (ns == NULL_NS) || ((ns % 3) == SUN_NS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
    // methods to test the interface stability of a given counter name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
    static bool is_stable_supported(const char* name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
      const char* javadot = "java.";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
      return strncmp(name, javadot, strlen(javadot)) == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    static bool is_unstable_supported(const char* name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
      const char* comdot = "com.sun.";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
      return strncmp(name, comdot, strlen(comdot)) == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
    static bool is_unstable_unsupported(const char* name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
      return !(is_stable_supported(name) && is_unstable_supported(name));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
    // method to construct counter name strings in a given name space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
    // The string object is allocated from the Resource Area and calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
    // to this method must be made within a ResourceMark.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
    static char* counter_name(const char* name_space, const char* name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
    // method to construct name space strings in a given name space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
    // The string object is allocated from the Resource Area and calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
    // to this method must be made within a ResourceMark.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
    static char* name_space(const char* name_space, const char* sub_space) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
      return counter_name(name_space, sub_space);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
    // same as above, but appends the instance number to the name space
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
    static char* name_space(const char* name_space, const char* sub_space,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
                            int instance);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
    static char* name_space(const char* name_space, int instance);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
    // these methods provide the general interface for creating
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
    // performance data resources. The types of performance data
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
    // resources can be extended by adding additional create<type>
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
    // methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
    // Constant Types
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
    static PerfStringConstant* create_string_constant(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
                                                      const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
                                                      const char *s, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
    static PerfLongConstant* create_long_constant(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
                                                  const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
                                                  PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
                                                  jlong val, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
    // Variable Types
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
    static PerfStringVariable* create_string_variable(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
                                                      const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
                                                      int max_length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
                                                      const char *s, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
    static PerfStringVariable* create_string_variable(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
                                                      const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
                                                      const char *s, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   778
      return create_string_variable(ns, name, 0, s, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
    };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
    static PerfLongVariable* create_long_variable(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
                                                  const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
                                                  PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
                                                  jlong ival, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
    static PerfLongVariable* create_long_variable(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
                                                  const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
                                                  PerfData::Units u, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   789
      return create_long_variable(ns, name, u, (jlong)0, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
    };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
    static PerfLongVariable* create_long_variable(CounterNS, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
                                                  PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
                                                  jlong* sp, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
    static PerfLongVariable* create_long_variable(CounterNS ns,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
                                                  const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
                                                  PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
                                                  PerfLongSampleHelper* sh,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
                                                  TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
    // Counter Types
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
    static PerfLongCounter* create_long_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
                                                PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
                                                jlong ival, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
    static PerfLongCounter* create_long_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
                                                PerfData::Units u, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   810
      return create_long_counter(ns, name, u, (jlong)0, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
    };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
    static PerfLongCounter* create_long_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
                                                PerfData::Units u, jlong* sp,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
                                                TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
    static PerfLongCounter* create_long_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
                                                PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
                                                PerfLongSampleHelper* sh,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
                                                TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
    // these creation methods are provided for ease of use. These allow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
    // Long performance data types to be created with a shorthand syntax.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
    static PerfConstant* create_constant(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
                                         PerfData::Units u, jlong val, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   828
      return create_long_constant(ns, name, u, val, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
    static PerfVariable* create_variable(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
                                         PerfData::Units u, jlong ival, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   833
      return create_long_variable(ns, name, u, ival, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
    static PerfVariable* create_variable(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
                                         PerfData::Units u, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   838
      return create_long_variable(ns, name, u, (jlong)0, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
    static PerfVariable* create_variable(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
                                         PerfData::Units u, jlong* sp, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   843
      return create_long_variable(ns, name, u, sp, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    static PerfVariable* create_variable(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
                                         PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
                                         PerfSampleHelper* sh, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   849
      return create_long_variable(ns, name, u, sh, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
    static PerfCounter* create_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
                                       PerfData::Units u, jlong ival, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   854
      return create_long_counter(ns, name, u, ival, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
    static PerfCounter* create_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
                                       PerfData::Units u, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   859
      return create_long_counter(ns, name, u, (jlong)0, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
    static PerfCounter* create_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
                                       PerfData::Units u, jlong* sp, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   864
      return create_long_counter(ns, name, u, sp, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
    static PerfCounter* create_counter(CounterNS ns, const char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
                                       PerfData::Units u,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
                                       PerfSampleHelper* sh, TRAPS) {
27680
8ecc0871c18e 8064811: Use THREAD instead of CHECK_NULL in return statements
stefank
parents: 22551
diff changeset
   870
      return create_long_counter(ns, name, u, sh, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
    static void destroy();
32614
b7b2407bc7e5 8049304: race between VM_Exit and _sync_FutileWakeups->inc()
dcubed
parents: 27680
diff changeset
   874
    static bool has_PerfData() { return _has_PerfData; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
// Useful macros to create the performance counters
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
#define NEWPERFTICKCOUNTER(counter, counter_ns, counter_name)  \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
  {counter = PerfDataManager::create_counter(counter_ns, counter_name, \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
                                             PerfData::U_Ticks,CHECK);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
#define NEWPERFEVENTCOUNTER(counter, counter_ns, counter_name)  \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  {counter = PerfDataManager::create_counter(counter_ns, counter_name, \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
                                             PerfData::U_Events,CHECK);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 1
diff changeset
   886
#define NEWPERFBYTECOUNTER(counter, counter_ns, counter_name)  \
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 1
diff changeset
   887
  {counter = PerfDataManager::create_counter(counter_ns, counter_name, \
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 1
diff changeset
   888
                                             PerfData::U_Bytes,CHECK);}
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 1
diff changeset
   889
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
// Utility Classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
 * this class will administer a PerfCounter used as a time accumulator
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
 * for a basic block much like the TraceTime class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
 * Example:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
 *    static PerfCounter* my_time_counter = PerfDataManager::create_counter("my.time.counter", PerfData::U_Ticks, 0LL, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
 *    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
 *      PerfTraceTime ptt(my_time_counter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
 *      // perform the operation you want to measure
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
 *    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
 * Note: use of this class does not need to occur within a guarded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
 * block. The UsePerfData guard is used with the implementation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
 * of this class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
class PerfTraceTime : public StackObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
    elapsedTimer _t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
    PerfLongCounter* _timerp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
    // pointer to thread-local or global recursion counter variable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    int* _recursion_counter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
    inline PerfTraceTime(PerfLongCounter* timerp) : _timerp(timerp), _recursion_counter(NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
      if (!UsePerfData) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
      _t.start();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
    inline PerfTraceTime(PerfLongCounter* timerp, int* recursion_counter) : _timerp(timerp), _recursion_counter(recursion_counter) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
      if (!UsePerfData || (_recursion_counter != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
                           (*_recursion_counter)++ > 0)) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
      _t.start();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
    inline void suspend() { if (!UsePerfData) return; _t.stop(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
    inline void resume() { if (!UsePerfData) return; _t.start(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
    inline ~PerfTraceTime() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
      if (!UsePerfData || (_recursion_counter != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
                           --(*_recursion_counter) > 0)) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
      _t.stop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
      _timerp->inc(_t.ticks());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
/* The PerfTraceTimedEvent class is responsible for counting the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
 * occurrence of some event and measuring the the elapsed time of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
 * the event in two separate PerfCounter instances.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
 * Example:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
 *    static PerfCounter* my_time_counter = PerfDataManager::create_counter("my.time.counter", PerfData::U_Ticks, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
 *    static PerfCounter* my_event_counter = PerfDataManager::create_counter("my.event.counter", PerfData::U_Events, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
 *    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
 *      PerfTraceTimedEvent ptte(my_time_counter, my_event_counter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
 *      // perform the operation you want to count and measure
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
 *    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
 * Note: use of this class does not need to occur within a guarded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
 * block. The UsePerfData guard is used with the implementation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
 * of this class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
class PerfTraceTimedEvent : public PerfTraceTime {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
  protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
    PerfLongCounter* _eventp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
  public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
    inline PerfTraceTimedEvent(PerfLongCounter* timerp, PerfLongCounter* eventp): PerfTraceTime(timerp), _eventp(eventp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
      if (!UsePerfData) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
      _eventp->inc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
    inline PerfTraceTimedEvent(PerfLongCounter* timerp, PerfLongCounter* eventp, int* recursion_counter): PerfTraceTime(timerp, recursion_counter), _eventp(eventp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
      if (!UsePerfData) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
      _eventp->inc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   975
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   976
#endif // SHARE_VM_RUNTIME_PERFDATA_HPP