/*
 * Copyright (c) 2014, 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
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 */
package jdk.vm.ci.hotspot;

import jdk.vm.ci.hotspot.EmptyEventProvider.EmptyCompilationEvent;
import jdk.vm.ci.hotspot.EmptyEventProvider.EmptyCompilerFailureEvent;

Service-provider class for logging compiler related events.
/**
 * Service-provider class for logging compiler related events.
 */
public interface EventProvider {

    
Creates and returns an empty implementation for EventProvider. This implementation can be used when no logging is requested. /**
     * Creates and returns an empty implementation for {@link EventProvider}. This implementation
     * can be used when no logging is requested.
     */
    static EventProvider createEmptyEventProvider() {
        return new EmptyEventProvider();
    }

    
Creates and returns an empty implementation for CompilationEvent. /**
     * Creates and returns an empty implementation for {@link CompilationEvent}.
     */
    static CompilationEvent createEmptyCompilationEvent() {
        return new EmptyCompilationEvent();
    }

    
Creates and returns an empty implementation for CompilationEvent. /**
     * Creates and returns an empty implementation for {@link CompilationEvent}.
     */
    static CompilerFailureEvent createEmptyCompilerFailureEvent() {
        return new EmptyCompilerFailureEvent();
    }

    
An instant event is an event that is not considered to have taken any time.
/**
     * An instant event is an event that is not considered to have taken any time.
     */
    public interface InstantEvent {
        
Commits the event.
/**
         * Commits the event.
         */
        void commit();

        
Determines if this particular event instance would be committed to the data stream right now if application called commit(). This in turn depends on whether the event is enabled and possible other factors. 
Returns:
if this event would be committed on a call to commit()./**
         * Determines if this particular event instance would be committed to the data stream right
         * now if application called {@link #commit()}. This in turn depends on whether the event is
         * enabled and possible other factors.
         *
         * @return if this event would be committed on a call to {@link #commit()}.
         */
        boolean shouldWrite();
    }

    
Timed events describe an operation that somehow consumes time.
/**
     * Timed events describe an operation that somehow consumes time.
     */
    public interface TimedEvent extends InstantEvent {
        
Starts the timing for this event.
/**
         * Starts the timing for this event.
         */
        void begin();

        
Ends the timing period for this event.
/**
         * Ends the timing period for this event.
         */
        void end();
    }

    
Creates a new CompilationEvent. 
Returns:
a compilation event/**
     * Creates a new {@link CompilationEvent}.
     *
     * @return a compilation event
     */
    CompilationEvent newCompilationEvent();

    
A compilation event.
/**
     * A compilation event.
     */
    public interface CompilationEvent extends TimedEvent {
        void setMethod(String method);

        void setCompileId(int compileId);

        void setCompileLevel(int compileLevel);

        void setSucceeded(boolean succeeded);

        void setIsOsr(boolean isOsr);

        void setCodeSize(int codeSize);

        void setInlinedBytes(int inlinedBytes);
    }

    
Creates a new CompilerFailureEvent. 
Returns:
a compiler failure event/**
     * Creates a new {@link CompilerFailureEvent}.
     *
     * @return a compiler failure event
     */
    CompilerFailureEvent newCompilerFailureEvent();

    
A compiler failure event.
/**
     * A compiler failure event.
     */
    public interface CompilerFailureEvent extends InstantEvent {
        void setCompileId(int compileId);

        void setMessage(String message);
    }
}