diff options
Diffstat (limited to 'src/include/storage/dsm_impl.h')
| -rw-r--r-- | src/include/storage/dsm_impl.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/storage/dsm_impl.h b/src/include/storage/dsm_impl.h index fade3a3668..daf07bd19c 100644 --- a/src/include/storage/dsm_impl.h +++ b/src/include/storage/dsm_impl.h @@ -54,6 +54,9 @@ extern PGDLLIMPORT int min_dynamic_shared_memory; /* A "name" for a dynamic shared memory segment. */ typedef uint32 dsm_handle; +/* Sentinel value to use for invalid DSM handles. */ +#define DSM_HANDLE_INVALID ((dsm_handle) 0) + /* All the shared-memory operations we know about. */ typedef enum { |