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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /******************************************************************************/ | ||
| /* */ | ||
| /* X r d S s i A l e r t . c c */ | ||
| /* */ | ||
| /* (c) 2017 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 <http://www.gnu.org/licenses/>. */ | ||
| /* */ | ||
| /* 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 <sys/uio.h> | ||
|
|
||
| #include "XrdOuc/XrdOucErrInfo.hh" | ||
| #include "XrdSsi/XrdSsiAlert.hh" | ||
| #include "XrdSsi/XrdSsiRRInfo.hh" | ||
|
|
||
| /******************************************************************************/ | ||
| /* S t a t i c s */ | ||
| /******************************************************************************/ | ||
|
|
||
| XrdSysMutex XrdSsiAlert::aMutex; | ||
| XrdSsiAlert *XrdSsiAlert::free = 0; | ||
| int XrdSsiAlert::fNum = 0; | ||
| int XrdSsiAlert::fMax = XrdSsiAlert::fmaxDflt; | ||
|
|
||
| /******************************************************************************/ | ||
| /* A l l o c */ | ||
| /******************************************************************************/ | ||
|
|
||
| XrdSsiAlert *XrdSsiAlert::Alloc(XrdSsiRespInfoMsg &aMsg) | ||
| { | ||
| XrdSsiAlert *aP; | ||
|
|
||
| // Obtain a lock | ||
| // | ||
| aMutex.Lock(); | ||
|
|
||
| // Allocate via stack or a new call | ||
| // | ||
| if (!(aP = free)) aP = new XrdSsiAlert(); | ||
| else {free = aP->next; fNum--;} | ||
|
|
||
| // Unlock mutex | ||
| // | ||
| aMutex.UnLock(); | ||
|
|
||
| // Fill out object and return it | ||
| // | ||
| aP->next = 0; | ||
| aP->theMsg = &aMsg; | ||
| return aP; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| /* D o n e */ | ||
| /******************************************************************************/ | ||
|
|
||
| // Gets invoked only after query() on wtresp signal was sent | ||
|
|
||
| void XrdSsiAlert::Done(int &retc, XrdOucErrInfo *eiP, const char *name) | ||
| { | ||
|
|
||
| // This is an async callback so we need to delete our errinfo object. | ||
| // | ||
| delete eiP; | ||
|
|
||
| // Simply recycle this object. | ||
| // | ||
| Recycle(); | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| /* R e c y c l e */ | ||
| /******************************************************************************/ | ||
|
|
||
| void XrdSsiAlert::Recycle() | ||
| { | ||
|
|
||
| // Issue callback to release the message if we have one | ||
| // | ||
| if (theMsg) theMsg->Recycle(); | ||
|
|
||
| // Place object on the queue unless we have too many | ||
| // | ||
| aMutex.Lock(); | ||
| if (fNum >= fMax) delete this; | ||
| else {next = free; free = this; fNum++;} | ||
| aMutex.UnLock(); | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| /* S e t I n f o */ | ||
| /******************************************************************************/ | ||
|
|
||
| void XrdSsiAlert::SetInfo(XrdOucErrInfo &eInfo) | ||
| { | ||
| static const int aIovSz = 3; | ||
| struct AlrtResp {struct iovec ioV[aIovSz]; XrdSsiRRInfoAttn aHdr;}; | ||
|
|
||
| AlrtResp *alrtResp; | ||
| char *mBuff; | ||
| int n; | ||
|
|
||
| // We will be constructing the response in the message buffer. This is | ||
| // gauranteed to be big enough for our purposes so no need to check the size. | ||
| // | ||
| mBuff = eInfo.getMsgBuff(n); | ||
|
|
||
| // Initialize the response | ||
| // | ||
| alrtResp = (AlrtResp *)mBuff; | ||
| memset(alrtResp, 0, sizeof(AlrtResp)); | ||
| alrtResp->aHdr.pfxLen = htons(sizeof(XrdSsiRRInfoAttn)); | ||
|
|
||
| // Fill out iovec to point to our header | ||
| // | ||
| // alrtResp->ioV[0].iov_len = sizeof(XrdSsiRRInfoAttn) + msgBlen; | ||
| alrtResp->ioV[1].iov_base = mBuff+offsetof(struct AlrtResp, aHdr); | ||
| alrtResp->ioV[1].iov_len = sizeof(XrdSsiRRInfoAttn); | ||
|
|
||
| // Fill out the iovec for the alert data | ||
| // | ||
| alrtResp->ioV[2].iov_base = theMsg->GetMsg(n); | ||
| alrtResp->ioV[2].iov_len = n; | ||
| alrtResp->aHdr.mdLen = htonl(n); | ||
| alrtResp->aHdr.tag = XrdSsiRRInfoAttn::alrtResp; | ||
|
|
||
| // Setup to have metadata actually sent to the requestor | ||
| // | ||
| eInfo.setErrCode(aIovSz); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| #ifndef _XRDSSIALERT_H | ||
| #define _XRDSSIALERT_H | ||
| /******************************************************************************/ | ||
| /* */ | ||
| /* X r d S s i A l e r t . h h */ | ||
| /* */ | ||
| /* (c) 2017 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 <http://www.gnu.org/licenses/>. */ | ||
| /* */ | ||
| /* 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 "XrdOuc/XrdOucErrInfo.hh" | ||
| #include "XrdSsi/XrdSsiRequest.hh" | ||
| #include "XrdSys/XrdSysPthread.hh" | ||
|
|
||
| class XrdSsiAlert : public XrdOucEICB | ||
| { | ||
| public: | ||
|
|
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| XrdSsiAlert *next; | ||
|
|
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| static XrdSsiAlert *Alloc(XrdSsiRespInfoMsg &aMsg); | ||
|
|
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| void Recycle(); | ||
|
|
||
| void SetInfo(XrdOucErrInfo &eInfo); | ||
|
|
||
| static void SetMax(int maxval) {fMax = maxval;} | ||
|
|
||
| // OucEICB methods | ||
| // | ||
| void Done(int &Result, XrdOucErrInfo *cbInfo, | ||
| const char *path=0); | ||
|
|
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| int Same(unsigned long long arg1, unsigned long long arg2) | ||
| {return 0;} | ||
|
|
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| XrdSsiAlert() {} | ||
| ~XrdSsiAlert() {} | ||
| private: | ||
|
|
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| static XrdSysMutex aMutex; | ||
| static XrdSsiAlert *free; | ||
| static int fNum; | ||
| static int fMax; | ||
|
|
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| static const int fmaxDflt = 100; | ||
|
|
||
| XrdSsiRespInfoMsg *theMsg; | ||
| }; | ||
| #endif |
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