jdk-24/src/hotspot/share/trace/traceBackend.hpp

/*
 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
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 */
#ifndef SHARE_VM_TRACE_TRACEBACKEND_HPP
#define SHARE_VM_TRACE_TRACEBACKEND_HPP

#include "utilities/macros.hpp"
#if INCLUDE_TRACE
#include "runtime/globals.hpp"
#include "runtime/os.hpp"
#include "trace/traceTime.hpp"
#include "tracefiles/traceEventIds.hpp"

class TraceBackend {
public:
  static bool enabled(void) {
    return EnableTracing;
  }

  static bool is_event_enabled(TraceEventId id) {
    return enabled();
  }

  static TracingTime time() {
    return os::elapsed_counter();
  }

  static void on_unloading_classes(void) {
  }

};

class TraceThreadData {
public:
    TraceThreadData() {}
};

typedef TraceBackend Tracing;

#else // !INCLUDE_TRACE
#include "trace/noTraceBackend.hpp"
#endif // INCLUDE_TRACE
#endif // SHARE_VM_TRACE_TRACEBACKEND_HPP