diff options
Diffstat (limited to 'src/include/storage/buf_internals.h')
| -rw-r--r-- | src/include/storage/buf_internals.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/include/storage/buf_internals.h b/src/include/storage/buf_internals.h index 17687510cde..2bd210dfb52 100644 --- a/src/include/storage/buf_internals.h +++ b/src/include/storage/buf_internals.h @@ -8,14 +8,13 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/storage/buf_internals.h,v 1.77 2005/03/04 20:21:07 tgl Exp $ + * $PostgreSQL: pgsql/src/include/storage/buf_internals.h,v 1.78 2005/05/19 21:35:47 tgl Exp $ * *------------------------------------------------------------------------- */ #ifndef BUFMGR_INTERNALS_H #define BUFMGR_INTERNALS_H -#include "storage/backendid.h" #include "storage/buf.h" #include "storage/lwlock.h" #include "storage/shmem.h" @@ -94,7 +93,7 @@ typedef struct buftag * BufferDesc -- shared descriptor/state data for a single shared buffer. * * Note: buf_hdr_lock must be held to examine or change the tag, flags, - * usage_count, refcount, or wait_backend_id fields. buf_id field never + * usage_count, refcount, or wait_backend_pid fields. buf_id field never * changes after initialization, so does not need locking. freeNext is * protected by the BufFreelistLock not buf_hdr_lock. The LWLocks can take * care of themselves. The buf_hdr_lock is *not* used to control access to @@ -108,8 +107,8 @@ typedef struct buftag * * We can't physically remove items from a disk page if another backend has * the buffer pinned. Hence, a backend may need to wait for all other pins - * to go away. This is signaled by storing its own backend ID into - * wait_backend_id and setting flag bit BM_PIN_COUNT_WAITER. At present, + * to go away. This is signaled by storing its own PID into + * wait_backend_pid and setting flag bit BM_PIN_COUNT_WAITER. At present, * there can be only one such waiter per buffer. * * We use this same struct for local buffer headers, but the lock fields @@ -121,7 +120,7 @@ typedef struct sbufdesc BufFlags flags; /* see bit definitions above */ uint16 usage_count; /* usage counter for clock sweep code */ unsigned refcount; /* # of backends holding pins on buffer */ - BackendId wait_backend_id; /* backend ID of pin-count waiter */ + int wait_backend_pid; /* backend PID of pin-count waiter */ slock_t buf_hdr_lock; /* protects the above fields */ |