Looks good.
Some minor comments.
share/vm/services/diagnosticCommand.hpp
Format of description() return is not consistent:
- Some have dot at the end, some - not.
- Some has an extra space.
72 return "Print the command line used to start this VM instance.";
86 return "Print system properties";
102 return "Print VM flag options and their current values. ";
166 return "Generate a HPROF format dump of the Java heap";
185 return "Provide statistics about the Java heap usage";
Should the impact() function result be formatted the same way as
description()
- to have or not have dot at the end ?
The following lines are incorrectly indented:
85 static const char* description() {
86 return "Print system properties";
87 }
88 static const char* impact() {
89 return "Low:";
90 }
131 static const char* description() {
132 return "Call java.lang.System.gc().";
133 }
134 static const char* impact() {
135 return "Medium: Depends on Java heap size and content";
136 }
145 static const char* description() {
146 return "Call java.lang.System.runFinalization().";
147 }
148 static const char* impact() {
149 return "Medium: Depends on Java content";
150 }
Thanks,
Serguei
On 1/5/12 7:19 AM, Frederic Parain wrote:
This changeset aims to add a first set of diagnostic commands
to the HotSpot JVM. It also includes minor modifications to
the diagnostic command framework implementation to ease
development of new diagnostic commands.
The webrev is here:
http://cr.openjdk.java.net/~fparain/7120511/webrev.00/
Here's the list of new diagnostic commands:
Thread.print
Print all threads with stacktraces.
GC.class_histogram
Provides statistics about the Java heap usage
GC.heap_dump
Generate a HPROF format dump of the Java heap
GC.run_finalization
Call java.lang.System.runFinalization().
GC.run
Call java.lang.System.gc().
VM.uptime
Print VM uptime.
VM.flags
Print VM flag options and their current values.
VM.system_properties
Print system properties
VM.command_line
Print the command line used to start this VM instance.
Thanks,
Fred
