| 388 | */ |
| 389 | extern bool BufferLockHeldByMe(Page page); |
| 390 | static inline XLogRecPtr |
| 391 | PageGetLSN(Page page) |
| 392 | { |
| 393 | #if defined (USE_ASSERT_CHECKING) && !defined(FRONTEND) |
| 394 | Assert(BufferLockHeldByMe(page)); |
| 395 | #endif |
| 396 | return PageXLogRecPtrGet(((PageHeader) (page))->pd_lsn); |
| 397 | } |
| 398 | |
| 399 | /* |
| 400 | * Additional macros for access to page headers. (Beware multiple evaluation |