| /* |
| * Copyright (c) 2008, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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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| */ |
| |
| /** |
| * This package contains internal common code for implementing tracing |
| * frameworks, and defined a number of existing frameworks. |
| * <p> |
| * There are four tracing frameworks currently defined. The "Null" and |
| * "Multiplex" frameworks are used internally as part of the implementation. |
| * The "DTrace" framework is the prime consumer framework at the moment, |
| * while the "PrintStream" framework is a functional, but hidden, framework |
| * which can be used to track probe firings. All but the "DTrace" framework |
| * are defined in this package. The "DTrace" framework is implemented in the |
| * {@code sun.tracing.dtrace} package. |
| * <p> |
| * This package also contains the {@code ProviderSkeleton} class, which |
| * holds most of the common code needed for implementing frameworks. |
| * <p> |
| * The "Null" framework is used when there are no other active frameworks. |
| * It accomplishes absolutely nothing and is merely a placeholder so that |
| * the application can call the tracing routines without error. |
| * <p> |
| * The "Multiplex" framework is used when there are multiple active frameworks. |
| * It is initialized with the framework factories and create providers and |
| * probes that dispatch to each active framework in turn. |
| * <p> |
| * The "PrintStream" framework is currently a debugging framework which |
| * dispatches trace calls to a user-defined PrintStream class, defined by |
| * a property. It may some day be opened up to general use. |
| * <p> |
| * See the {@code sun.tracing.dtrace} and {@code com.sun.tracing.dtrace} |
| * packages for information on the "DTrace" framework. |
| */ |
| |
| package sun.tracing; |
