diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/storage/ipc/dsm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/storage/ipc/dsm.c b/src/backend/storage/ipc/dsm.c index d8066647a07..8c6abe3b45b 100644 --- a/src/backend/storage/ipc/dsm.c +++ b/src/backend/storage/ipc/dsm.c @@ -182,7 +182,7 @@ dsm_postmaster_startup(PGShmemHeader *shim) Assert(dsm_control_address == NULL); Assert(dsm_control_mapped_size == 0); dsm_control_handle = random(); - if (dsm_control_handle == 0) + if (dsm_control_handle == DSM_HANDLE_INVALID) continue; if (dsm_impl_op(DSM_OP_CREATE, dsm_control_handle, segsize, &dsm_control_impl_private, &dsm_control_address, @@ -476,6 +476,8 @@ dsm_create(Size size, int flags) { Assert(seg->mapped_address == NULL && seg->mapped_size == 0); seg->handle = random(); + if (seg->handle == DSM_HANDLE_INVALID) /* Reserve sentinel */ + continue; if (dsm_impl_op(DSM_OP_CREATE, seg->handle, size, &seg->impl_private, &seg->mapped_address, &seg->mapped_size, ERROR)) break; |