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| author | Etienne Petrel <etienne.petrel@mongodb.com> | 2021-11-18 14:43:46 +0000 |
|---|---|---|
| committer | Evergreen Agent <no-reply@evergreen.mongodb.com> | 2021-11-18 15:39:41 +0000 |
| commit | 63639d4b9348c7a9943ab38121c5701b8dc09892 (patch) | |
| tree | 5047ac77eb656f166da75860f144aad4f405aa94 /src/third_party/wiredtiger/src/session/session_api.c | |
| parent | 041cb777961858638cbb834015d24d6bc2f2fd08 (diff) | |
| download | mongo-63639d4b9348c7a9943ab38121c5701b8dc09892.tar.gz | |
Import wiredtiger: 73e6a5f9733205d2b0c1d58a78480fc2f5b08085 from branch mongodb-master
ref: 76bac330da..73e6a5f973
for: 5.2.0
WT-8303 Implement weak hazard pointers
Diffstat (limited to 'src/third_party/wiredtiger/src/session/session_api.c')
| -rw-r--r-- | src/third_party/wiredtiger/src/session/session_api.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/src/session/session_api.c b/src/third_party/wiredtiger/src/session/session_api.c index 74e2cdab612..ca4762298e2 100644 --- a/src/third_party/wiredtiger/src/session/session_api.c +++ b/src/third_party/wiredtiger/src/session/session_api.c @@ -191,6 +191,8 @@ __wt_session_release_resources(WT_SESSION_IMPL *session) static void __session_clear(WT_SESSION_IMPL *session) { + WT_HAZARD_WEAK_ARRAY *wha; + /* * There's no serialization support around the review of the hazard array, which means threads * checking for hazard pointers first check the active field (which may be 0) and then use the @@ -205,6 +207,11 @@ __session_clear(WT_SESSION_IMPL *session) session->hazard_inuse = 0; session->nhazard = 0; + + for (wha = session->hazard_weak; wha != NULL; wha = wha->next) { + wha->hazard_inuse = 0; + wha->nhazard = 0; + } } /* @@ -2064,6 +2071,13 @@ __open_session(WT_CONNECTION_IMPL *conn, WT_EVENT_HANDLER *event_handler, const session_ret->hazard_size = WT_SESSION_INITIAL_HAZARD_SLOTS; session_ret->hazard_inuse = 0; session_ret->nhazard = 0; + + WT_ERR(__wt_calloc(session, 1, + sizeof(WT_HAZARD_WEAK_ARRAY) + WT_SESSION_INITIAL_HAZARD_SLOTS * sizeof(WT_HAZARD_WEAK), + &session_ret->hazard_weak)); + session_ret->hazard_weak->hazard_size = WT_SESSION_INITIAL_HAZARD_SLOTS; + session_ret->hazard_weak->hazard_inuse = 0; + session_ret->hazard_weak->nhazard = 0; } /* |