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Bug ID:
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6825019
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Votes
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0
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Synopsis
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DownloadManager should not be loaded and referenced for full JRE
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Category
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java_deployment:jkernel
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Reported Against
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Release Fixed
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,
7(b64) (Bug ID:2176607)
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State
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3-Accepted,
request for enhancement
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Priority:
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3-Medium
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Related Bugs
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6612680
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6798873
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6833260
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Submit Date
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01-APR-2009
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Description
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sun.jkernel.DownloadManager is only needed for Kernel JRE.
Full JRE should not need DownloadManager in any application run. The kernel VM sets a flag indicating if the running jvm is a kernel VM (see struct jvm_version_info in jvm.h). The JRE can use the VM interface to detect if it's in kernel JRE or not.
For FX video applet run, here is the number of invocations collected from the nb profile data:
DownloadManager.getBootClassPathEntryForClass 1621
DownloadManager.getBootClassPathEntryForResource 1632
DownloadManager.isJREComplete 1667
Posted Date : 2009-04-01 18:52:21.0
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Work Around
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N/A
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Evaluation
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This likely to be dup of 6612680.
On the related note while DownloadManager does not do anything useful
in case of complete JRE it is unclear if these methods have any noticeable
overhead. They should only check boolean value and return in case of full JRE
and this likely to be inlined by JIT.
Posted Date : 2009-04-02 12:38:59.0
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Comments
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PLEASE NOTE: JDK6 is formerly known as Project Mustang
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