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From: tromey@redhat.com To: gcc-gnats@gcc.gnu.org Subject: libgcj/8997: spin() calls Thread.sleep Date: Wed, 18 Dec 2002 14:26:00 -0000 [thread overview] Message-ID: <20021218222330.4354.qmail@sources.redhat.com> (raw) >Number: 8997 >Category: libgcj >Synopsis: spin() calls Thread.sleep >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Wed Dec 18 14:26:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: Tom Tromey >Release: unknown-1.0 >Organization: >Environment: >Description: I let in a small change to natObject.cc that changed spin() to call Thread::sleep instead of usleep(). I think this was a mistake (to be honest I don't recall seeing that code in a patch, double oops on me). spin() is used in the implementation of _Jv_MonitorEnter; the point as I understand it is to sleep a bit to avoid creating a heavyweight mutex. However, Thread::sleep() acquires just such a mutex -- defeating the purpose of spin(). (See java list for more info.) >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2002-12-18 22:26 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-12-18 14:26 tromey [this message] 2002-12-19 11:13 tromey 2002-12-31 9:44 tromey
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