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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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22
versioning/BRM/extentmap.h
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@ -161,7 +161,17 @@ struct ExtentSorter
class ExtentMapImpl
{
public:
~ExtentMapImpl(){};
static ExtentMapImpl* makeExtentMapImpl(unsigned key, off_t size, bool readOnly = false);
static void refreshShm()
{
if (fInstance)
{
delete fInstance;
fInstance = NULL;
}
}
inline void grow(unsigned key, off_t size)
#ifdef NDEBUG
@ -199,7 +209,6 @@ public:
private:
ExtentMapImpl(unsigned key, off_t size, bool readOnly = false);
~ExtentMapImpl();
ExtentMapImpl(const ExtentMapImpl& rhs);
ExtentMapImpl& operator=(const ExtentMapImpl& rhs);
@ -212,7 +221,17 @@ private:
class FreeListImpl
{
public:
~FreeListImpl(){};
static FreeListImpl* makeFreeListImpl(unsigned key, off_t size, bool readOnly = false);
static void refreshShm()
{
if (fInstance)
{
delete fInstance;
fInstance = NULL;
}
}
inline void grow(unsigned key, off_t size)
#ifdef NDEBUG
@ -250,7 +269,6 @@ public:
private:
FreeListImpl(unsigned key, off_t size, bool readOnly = false);
~FreeListImpl();
FreeListImpl(const FreeListImpl& rhs);
FreeListImpl& operator=(const FreeListImpl& rhs);