From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4844 invoked by alias); 18 Dec 2002 22:26:03 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 4800 invoked by uid 71); 18 Dec 2002 22:26:01 -0000 Resent-Date: 18 Dec 2002 22:26:01 -0000 Resent-Message-ID: <20021218222601.4798.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org, java-prs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, tromey@redhat.com Received: (qmail 4355 invoked by uid 61); 18 Dec 2002 22:23:30 -0000 Message-Id: <20021218222330.4354.qmail@sources.redhat.com> Date: Wed, 18 Dec 2002 14:26:00 -0000 From: tromey@redhat.com Reply-To: tromey@redhat.com To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: libgcj/8997: spin() calls Thread.sleep X-SW-Source: 2002-12/txt/msg00976.txt.bz2 List-Id: >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: