diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/storage/lwlock.h | 8 | ||||
| -rw-r--r-- | src/include/storage/proc.h | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/include/storage/lwlock.h b/src/include/storage/lwlock.h index ca4eca76f4..a494cb598f 100644 --- a/src/include/storage/lwlock.h +++ b/src/include/storage/lwlock.h @@ -23,6 +23,14 @@ struct PGPROC; +/* what state of the wait process is a backend in */ +typedef enum LWLockWaitState +{ + LW_WS_NOT_WAITING, /* not currently waiting / woken up */ + LW_WS_WAITING, /* currently waiting */ + LW_WS_PENDING_WAKEUP, /* removed from waitlist, but not yet signalled */ +} LWLockWaitState; + /* * Code outside of lwlock.c should not manipulate the contents of this * structure directly, but we have to declare it here to allow LWLocks to be diff --git a/src/include/storage/proc.h b/src/include/storage/proc.h index 8d096fdeeb..aa13e1d66e 100644 --- a/src/include/storage/proc.h +++ b/src/include/storage/proc.h @@ -217,7 +217,7 @@ struct PGPROC bool recoveryConflictPending; /* Info about LWLock the process is currently waiting for, if any. */ - bool lwWaiting; /* true if waiting for an LW lock */ + uint8 lwWaiting; /* see LWLockWaitState */ uint8 lwWaitMode; /* lwlock mode being waited for */ proclist_node lwWaitLink; /* position in LW lock wait list */ |