97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cJSON.h"
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#include "os.h"
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#include "taoserror.h"
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#include "tutil.h"
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#include "walInt.h"
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SWalRef *walOpenRef(SWal *pWal) {
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SWalRef *pRef = taosMemoryCalloc(1, sizeof(SWalRef));
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if (pRef == NULL) {
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return NULL;
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}
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pRef->refId = tGenIdPI64();
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pRef->refVer = -1;
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pRef->refFile = -1;
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pRef->pWal = pWal;
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taosHashPut(pWal->pRefHash, &pRef->refId, sizeof(int64_t), &pRef, sizeof(void *));
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return pRef;
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}
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#if 1
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void walCloseRef(SWal *pWal, int64_t refId) {
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SWalRef **ppRef = taosHashGet(pWal->pRefHash, &refId, sizeof(int64_t));
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if (ppRef == NULL) return;
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SWalRef *pRef = *ppRef;
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taosHashRemove(pWal->pRefHash, &refId, sizeof(int64_t));
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taosMemoryFree(pRef);
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}
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#endif
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int32_t walRefVer(SWalRef *pRef, int64_t ver) {
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SWal *pWal = pRef->pWal;
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wDebug("vgId:%d, wal ref version %" PRId64 ", refId %" PRId64, pWal->cfg.vgId, ver, pRef->refId);
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if (pRef->refVer != ver) {
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taosThreadMutexLock(&pWal->mutex);
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if (ver < pWal->vers.firstVer || ver > pWal->vers.lastVer) {
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taosThreadMutexUnlock(&pWal->mutex);
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terrno = TSDB_CODE_WAL_INVALID_VER;
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return -1;
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}
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pRef->refVer = ver;
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// bsearch in fileSet
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SWalFileInfo tmpInfo;
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tmpInfo.firstVer = ver;
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SWalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
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ASSERT(pRet != NULL);
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pRef->refFile = pRet->firstVer;
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taosThreadMutexUnlock(&pWal->mutex);
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}
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return 0;
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}
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#if 1
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void walUnrefVer(SWalRef *pRef) {
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pRef->refId = -1;
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pRef->refFile = -1;
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}
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#endif
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SWalRef *walRefCommittedVer(SWal *pWal) {
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SWalRef *pRef = walOpenRef(pWal);
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if (pRef == NULL) {
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return NULL;
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}
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taosThreadMutexLock(&pWal->mutex);
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int64_t ver = walGetCommittedVer(pWal);
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pRef->refVer = ver;
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// bsearch in fileSet
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SWalFileInfo tmpInfo;
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tmpInfo.firstVer = ver;
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SWalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
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ASSERT(pRet != NULL);
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pRef->refFile = pRet->firstVer;
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taosThreadMutexUnlock(&pWal->mutex);
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return pRef;
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}
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