/******************************************************************************/ /* */ /* X r d C m s J o b . c c */ /* */ /* (c) 2007 by the Board of Trustees of the Leland Stanford, Jr., University */ /* All Rights Reserved */ /* Produced by Andrew Hanushevsky for Stanford University under contract */ /* DE-AC02-76-SFO0515 with the Department of Energy */ /* */ /* This file is part of the XRootD software suite. */ /* */ /* XRootD is free software: you can redistribute it and/or modify it under */ /* the terms of the GNU Lesser General Public License as published by the */ /* Free Software Foundation, either version 3 of the License, or (at your */ /* option) any later version. */ /* */ /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ /* License for more details. */ /* */ /* You should have received a copy of the GNU Lesser General Public License */ /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ /* COPYING (GPL license). If not, see . */ /* */ /* The copyright holder's institutional names and contributor's names may not */ /* be used to endorse or promote products derived from this software without */ /* specific prior written permission of the institution or contributor. */ /******************************************************************************/ #include #include #include #include #include "Xrd/XrdLink.hh" #include "Xrd/XrdScheduler.hh" #include "XrdSys/XrdSysHeaders.hh" #include "XrdCms/XrdCmsJob.hh" #include "XrdCms/XrdCmsProtocol.hh" #include "XrdCms/XrdCmsRRData.hh" #include "XrdCms/XrdCmsTrace.hh" using namespace XrdCms; /******************************************************************************/ /* G l o b a l O b j e c t s */ /******************************************************************************/ namespace XrdCms { extern XrdScheduler *Sched; }; XrdSysMutex XrdCmsJob::JobMutex; XrdCmsJob *XrdCmsJob::JobStack = 0; /******************************************************************************/ /* A l l o c */ /******************************************************************************/ XrdCmsJob *XrdCmsJob::Alloc(XrdCmsProtocol *Proto, XrdCmsRRData *Data) { XrdCmsJob *jp; // Grab a protocol object and, if none, return a new one // JobMutex.Lock(); if ((jp = JobStack)) JobStack = jp->JobLink; else jp = new XrdCmsJob(); JobMutex.UnLock(); // Copy relevant sections to the newly allocated protocol object // if (jp) {jp->theProto = Proto; jp->theData = Data; jp->Comment = Proto->myRole; Proto->Link->setRef(1); } else Say.Emsg("Job","No more job objects to serve",Proto->Link->Name()); // All done // return jp; } /******************************************************************************/ /* D o I t */ /******************************************************************************/ void XrdCmsJob::DoIt() { int rc; // Simply execute the method on the data. If operation started and we have to // wait foir it, simply reschedule ourselves for a later time. // if ((rc = theProto->Execute(*theData))) if (rc == -EINPROGRESS) {Sched->Schedule((XrdJob *)this, theData->waitVal+time(0)); return;} theProto->Ref(-1); Recycle(); } /******************************************************************************/ /* R e c y c l e */ /******************************************************************************/ void XrdCmsJob::Recycle() { // Dereference the link at this point // theProto->Link->setRef(-1); // Release the data buffer // if (theData) {XrdCmsRRData::Objectify(theData); theData = 0;} // Push ourselves on the stack // JobMutex.Lock(); JobLink = JobStack; JobStack = this; JobMutex.UnLock(); }