diff options
Diffstat (limited to 'src/include/storage/aio_internal.h')
| -rw-r--r-- | src/include/storage/aio_internal.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/include/storage/aio_internal.h b/src/include/storage/aio_internal.h index 2d37a243abe..b4de30f2ec1 100644 --- a/src/include/storage/aio_internal.h +++ b/src/include/storage/aio_internal.h @@ -92,17 +92,23 @@ typedef enum PgAioHandleState struct ResourceOwnerData; -/* typedef is in aio_types.h */ +/* + * Typedef is in aio_types.h + * + * We don't use the underlying enums for state, target and op to avoid wasting + * space. We tried using bitfields, but several compilers generate rather + * horrid code for that. + */ struct PgAioHandle { /* all state updates should go through pgaio_io_update_state() */ - PgAioHandleState state:8; + uint8 state; /* what are we operating on */ - PgAioTargetID target:8; + uint8 target; /* which IO operation */ - PgAioOp op:8; + uint8 op; /* bitfield of PgAioHandleFlags */ uint8 flags; |