diff options
Diffstat (limited to 'src/backend/storage/ipc/ipc.c')
| -rw-r--r-- | src/backend/storage/ipc/ipc.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/backend/storage/ipc/ipc.c b/src/backend/storage/ipc/ipc.c index 91fbea2ea4f..ccfa8a27bf2 100644 --- a/src/backend/storage/ipc/ipc.c +++ b/src/backend/storage/ipc/ipc.c @@ -13,7 +13,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.100 2008/01/01 19:45:51 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.101 2008/04/16 23:59:40 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -56,7 +56,7 @@ bool proc_exit_inprogress = false; static struct ONEXIT { - void (*function) (int code, Datum arg); + pg_on_exit_callback function; Datum arg; } on_proc_exit_list[MAX_ON_EXITS], on_shmem_exit_list[MAX_ON_EXITS]; @@ -184,7 +184,7 @@ shmem_exit(int code) * ---------------------------------------------------------------- */ void - on_proc_exit(void (*function) (int code, Datum arg), Datum arg) +on_proc_exit(pg_on_exit_callback function, Datum arg) { if (on_proc_exit_index >= MAX_ON_EXITS) ereport(FATAL, @@ -205,7 +205,7 @@ void * ---------------------------------------------------------------- */ void - on_shmem_exit(void (*function) (int code, Datum arg), Datum arg) +on_shmem_exit(pg_on_exit_callback function, Datum arg) { if (on_shmem_exit_index >= MAX_ON_EXITS) ereport(FATAL, @@ -219,6 +219,24 @@ void } /* ---------------------------------------------------------------- + * cancel_shmem_exit + * + * this function removes an entry, if present, from the list of + * functions to be invoked by shmem_exit(). For simplicity, + * only the latest entry can be removed. (We could work harder + * but there is no need for current uses.) + * ---------------------------------------------------------------- + */ +void +cancel_shmem_exit(pg_on_exit_callback function, Datum arg) +{ + if (on_shmem_exit_index > 0 && + on_shmem_exit_list[on_shmem_exit_index - 1].function == function && + on_shmem_exit_list[on_shmem_exit_index - 1].arg == arg) + --on_shmem_exit_index; +} + +/* ---------------------------------------------------------------- * on_exit_reset * * this function clears all on_proc_exit() and on_shmem_exit() |