Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/PhylumTag.java @ 15605:bb9473723904
Truffle/Instrumentation:
- Merge instrumentation support into the general execution context; remove separate Instrumentation interface and implementation
- Generalize the ?tagging? mechanism for extensibility: the enum PhylumTag is now an interface, and the standard tags moved to the new enum StandardTag
- A new ?trap? mechanism interrupts program execution at any probed node holding a specified PhylumTag; this replaces some other special-purpose code.
- Refine several interface by factoring out callback methods and simplifying collaboration among key implementation classes.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Mon, 12 May 2014 20:17:25 -0700 |
parents | 0c6d8a08e31b |
children |
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--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/PhylumTag.java Fri May 02 16:12:07 2014 -0700 +++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/PhylumTag.java Mon May 12 20:17:25 2014 -0700 @@ -25,46 +25,32 @@ package com.oracle.truffle.api.instrument; /** - * Program element "tags" that define user-visible behavior for debugging and other simple tools. - * These categories (<em>phyla</em>) should correspond to program structures that are meaningful to - * a guest language programmer. + * Program element "tags", presumed to be singletons (best implemented as enums) that define + * user-visible behavior for debugging and other simple tools. These categories (<em>phyla</em>) + * should correspond to program structures that are meaningful to a guest language programmer. * <p> * An untagged Truffle node should be understood as an artifact of the guest language implementation * and should not be visible to the user of a guest language programming tool. Nodes may also have * more than one tag, for example a variable assignment that is also a statement. Finally, the * assignment of tags to nodes could depending on the use-case of whatever tool is using them. * <p> - * This is a somewhat language-agnostic set of phyla, suitable for conventional imperative - * languages, and is being developed incrementally. - * <p> - * The need for alternative sets of tags is likely to arise, perhaps for other families of languages - * (for example for mostly expression-oriented languages) or even for specific languages. - * <p> - * These are listed alphabetically so that listing from some collection classes will come out in - * that order. - * <p> * <strong>Disclaimer:</strong> experimental interface under development. + * + * @see Probe + * @see Wrapper + * @see StandardTag */ -public enum PhylumTag { +public interface PhylumTag { /** - * Marker for a variable assignment. + * Human-friendly name of guest language program elements belonging to the category, e.g. + * "statement". */ - ASSIGNMENT, - - /** - * Marker for a call site. - */ - CALL, + String name(); /** - * Marker for a location where a guest language exception is about to be thrown. + * Criteria and example uses for the tag. */ - THROW, - - /** - * Marker for a location where ordinary "stepping" should halt. - */ - STATEMENT; + String getDescription(); }