Package sun.tracing

This package contains internal common code for implementing tracing frameworks, and defined a number of existing frameworks.

See: Description

Class Summary

Class	Description
MultiplexProviderFactory	Factory class to create tracing Providers.
NullProviderFactory	Factory class to create tracing Providers.
PrintStreamProviderFactory	Factory class to create tracing Providers.
ProbeSkeleton	Provides common code for implementation of Probe classes.
ProviderSkeleton	Provides a common code for implementation of Provider classes.

Package sun.tracing Description

This package contains internal common code for implementing tracing frameworks, and defined a number of existing frameworks.

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 sun.tracing.dtrace package.

This package also contains the ProviderSkeleton class, which holds most of the common code needed for implementing frameworks.

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.

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.

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.

See the sun.tracing.dtrace and com.sun.tracing.dtrace packages for information on the "DTrace" framework.