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MCOL-4330 dev Refresh shared memory

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If the plugin is restarted after the system is running, it's possible to have stale references to shared memory. This patch deletes those references so the next time they're used, just-in-time initialization will get the latest.
This commit is contained in:
David Hall
2020-10-01 18:19:03 -05:00
parent 1f1ce5bf07
commit 951a6abe85
6 changed files with 46 additions and 11 deletions
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14
versioning/BRM/dbrm.h
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@ -104,9 +104,16 @@ class DBRM
public:
// The param noBRMFcns suppresses init of the ExtentMap, VSS, VBBM, and CopyLocks.
// It can speed up init if the caller only needs the other structures.
EXPORT DBRM(bool noBRMFcns = false) throw();
EXPORT ~DBRM() throw();
EXPORT DBRM(bool noBRMFcns = false);
EXPORT ~DBRM();
EXPORT static void refreshShm()
{
MasterSegmentTableImpl::refreshShm();
ExtentMapImpl::refreshShm();
FreeListImpl::refreshShm();
}
// @bug 1055+ - Added functions below for multiple files per OID enhancement.
/** @brief Get the OID, offset, db root, partition, and segment of a logical block ID.
@ -495,7 +502,7 @@ public:
*/
EXPORT int getExtents(int OID, std::vector<struct EMEntry>& entries,
bool sorted = true, bool notFoundErr = true,
bool incOutOfService = false) throw();
bool incOutOfService = false);
/** @brief Gets the extents of a given OID under specified dbroot
*
@ -1015,6 +1022,7 @@ public:
*/
EXPORT void invalidateUncommittedExtentLBIDs(execplan::CalpontSystemCatalog::SCN txnid,
std::vector<LBID_t>* plbidList = NULL);
private:
DBRM(const DBRM& brm);
DBRM& operator=(const DBRM& brm);