/******************************************************************************/ /* */ /* X r d O u c B u f f e r . c c */ /* */ /* (c) 2004 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. */ /******************************************************************************/ #ifndef WIN32 #include #endif #include #include #if !defined(__APPLE__) && !defined(__FreeBSD__) #include #endif #include "XrdNet/XrdNetBuffer.hh" #include "XrdSys/XrdSysPlatform.hh" /******************************************************************************/ /* X r d N e t B u f f e r Q M e t h o d s */ /******************************************************************************/ /******************************************************************************/ /* C o n s t r u c t o r */ /******************************************************************************/ XrdNetBufferQ::XrdNetBufferQ(int bsz, int maxb) { size = bsz; alignit = (size < sysconf(_SC_PAGESIZE) ? size : sysconf(_SC_PAGESIZE)); maxbuff = maxb; numbuff = 0; } /******************************************************************************/ /* D e s t r u c t o r */ /******************************************************************************/ XrdNetBufferQ::~XrdNetBufferQ() { XrdNetBuffer *bp; while((bp = BuffStack.Pop())) delete bp; } /******************************************************************************/ /* A l l o c */ /******************************************************************************/ XrdNetBuffer *XrdNetBufferQ::Alloc() { XrdNetBuffer *bp; // Lock the data area // BuffList.Lock(); // Either return a new buffer or an old one // if ((bp = BuffStack.Pop())) numbuff--; else if ((bp = new XrdNetBuffer(this)) && !(bp->data = (char *)memalign(alignit, size))) {delete bp; bp = 0;} // Unlock the data area // BuffList.UnLock(); // Return the buffer // return bp; } /******************************************************************************/ /* R e c y c l e */ /******************************************************************************/ void XrdNetBufferQ::Recycle(XrdNetBuffer *bp) { // Check if we have enough objects, if so, delete ourselves and return // if (numbuff >= maxbuff) {delete bp; return;} bp->dlen = 0; // Add the buffer to the recycle list // BuffList.Lock(); BuffStack.Push(&bp->BuffLink); numbuff++; BuffList.UnLock(); return; } /******************************************************************************/ /* S e t */ /******************************************************************************/ void XrdNetBufferQ::Set(int maxb) { // Lock the data area, set max buffers, unlock and return // BuffList.Lock(); maxbuff = maxb; BuffList.UnLock(); return; } /******************************************************************************/ /* X r d N e t B u f f e r M e t h o d s */ /******************************************************************************/ /******************************************************************************/ /* C o n s t r u c t o r */ /******************************************************************************/ XrdNetBuffer::XrdNetBuffer(XrdNetBufferQ *bq) : BuffLink(this) { BuffQ= bq; data = 0; dlen = 0; }