diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/storage/dsm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/storage/dsm.h b/src/include/storage/dsm.h index 8be7c9aeeb5..bc91be62131 100644 --- a/src/include/storage/dsm.h +++ b/src/include/storage/dsm.h @@ -19,6 +19,9 @@ typedef struct dsm_segment dsm_segment; #define DSM_CREATE_NULL_IF_MAXSEGMENTS 0x0001 +/* A sentinel value for an invalid DSM handle. */ +#define DSM_HANDLE_INVALID 0 + /* Startup and shutdown functions. */ struct PGShmemHeader; /* avoid including pg_shmem.h */ extern void dsm_cleanup_using_control_segment(dsm_handle old_control_handle); |