/
githubmirror
/
postgres
Обзор
Документация
Войти
/
githubmirror
/
postgres
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
src/include/storage/buf.h
46 строк
1 KB
Bruce Momjian
Update copyright for 2026
01 янв 2026, 21:24
01 янв 2026, 21:24
451c439
Код
Авторство
О чём код?
/*------------------------------------------------------------------------- * * buf.h * Basic buffer manager data types. * * * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/storage/buf.h * *------------------------------------------------------------------------- */ #ifndef BUF_H #define BUF_H /* * Buffer identifiers. * * Zero is invalid, positive is the index of a shared buffer (1..NBuffers), * negative is the index of a local buffer (-1 .. -NLocBuffer). */ typedef int Buffer; #define InvalidBuffer 0 /* * BufferIsInvalid * True iff the buffer is invalid. */ #define BufferIsInvalid(buffer) ((buffer) == InvalidBuffer) /* * BufferIsLocal * True iff the buffer is local (not visible to other backends). */ #define BufferIsLocal(buffer) ((buffer) < 0) /* * Buffer access strategy objects. * * BufferAccessStrategyData is private to freelist.c */ typedef struct BufferAccessStrategyData *BufferAccessStrategy; #endif /* BUF_H */