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| author | Henrik Edin <henrik.edin@mongodb.com> | 2020-09-17 17:09:19 -0400 |
|---|---|---|
| committer | Evergreen Agent <no-reply@evergreen.mongodb.com> | 2020-09-26 02:12:49 +0000 |
| commit | 2b82ab88982566114d1bb7667477b71c883b0799 (patch) | |
| tree | c152b35ff047fdc42f69aa6cd6b04fee1d811fe4 /src/mongo/db/system_index.h | |
| parent | 08e92a678a1ed288f6a95e7950597e082556ae59 (diff) | |
| download | mongo-2b82ab88982566114d1bb7667477b71c883b0799.tar.gz | |
SERVER-50984 Add CollectionPtr to replace usage of const Collection*
It implements a yieldable interface that is used to re-load the
Collection pointer from the catalog after a yield that released locks.
With lock-free reads and copy-on-write on Collection instances releasing
locks without notifying an AutoGetCollection at a higher level may cause
its pointers to dangle if a MODE_X writer installs a new Collection
instance in the catalog.
CollectionPtr should be passed by const reference so a yield can notify
all the way up.
Diffstat (limited to 'src/mongo/db/system_index.h')
| -rw-r--r-- | src/mongo/db/system_index.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mongo/db/system_index.h b/src/mongo/db/system_index.h index 02eb4d26b4a..ce341e8b3b9 100644 --- a/src/mongo/db/system_index.h +++ b/src/mongo/db/system_index.h @@ -32,6 +32,7 @@ namespace mongo { class Collection; +class CollectionPtr; class OperationContext; class Status; @@ -39,7 +40,7 @@ class Status; * Creates the appropriate indexes on _new_ system collections for authentication, * authorization, and sessions. */ -void createSystemIndexes(OperationContext* opCtx, const Collection* collection); +void createSystemIndexes(OperationContext* opCtx, const CollectionPtr& collection); /** * Verifies that only the appropriate indexes to support authentication, authorization, and |