diff options
Diffstat (limited to 'src/include/utils/wait_event.h')
| -rw-r--r-- | src/include/utils/wait_event.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/include/utils/wait_event.h b/src/include/utils/wait_event.h index 4517425f84e..aad8bc08fa0 100644 --- a/src/include/utils/wait_event.h +++ b/src/include/utils/wait_event.h @@ -39,6 +39,32 @@ extern PGDLLIMPORT uint32 *my_wait_event_info; /* ---------- + * Wait Events - Extension + * + * Use this category when the server process is waiting for some condition + * defined by an extension module. + * + * Extensions can define their own wait events in this category. First, + * they should call WaitEventExtensionNew() to get one or more wait event + * IDs that are allocated from a shared counter. These can be used directly + * with pgstat_report_wait_start() or equivalent. Next, each individual + * process should call WaitEventExtensionRegisterName() to associate a wait + * event string to the number allocated previously. + */ +typedef enum +{ + WAIT_EVENT_EXTENSION = PG_WAIT_EXTENSION, + WAIT_EVENT_EXTENSION_FIRST_USER_DEFINED +} WaitEventExtension; + +extern void WaitEventExtensionShmemInit(void); +extern Size WaitEventExtensionShmemSize(void); + +extern uint32 WaitEventExtensionNew(void); +extern void WaitEventExtensionRegisterName(uint32 wait_event_info, + const char *wait_event_name); + +/* ---------- * pgstat_report_wait_start() - * * Called from places where server process needs to wait. This is called |