mirror of https://github.com/postgres/postgres
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
958 B
38 lines
958 B
8 months ago
|
/*-------------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* pg_numa.h
|
||
|
|
* Basic NUMA portability routines
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Copyright (c) 2025, PostgreSQL Global Development Group
|
||
|
|
*
|
||
|
|
* IDENTIFICATION
|
||
|
|
* src/include/port/pg_numa.h
|
||
|
|
*
|
||
|
|
*-------------------------------------------------------------------------
|
||
|
|
*/
|
||
|
|
#ifndef PG_NUMA_H
|
||
|
|
#define PG_NUMA_H
|
||
|
|
|
||
|
|
extern PGDLLIMPORT int pg_numa_init(void);
|
||
|
|
extern PGDLLIMPORT int pg_numa_query_pages(int pid, unsigned long count, void **pages, int *status);
|
||
|
|
extern PGDLLIMPORT int pg_numa_get_max_node(void);
|
||
|
|
|
||
|
|
#ifdef USE_LIBNUMA
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is required on Linux, before pg_numa_query_pages() as we
|
||
|
|
* need to page-fault before move_pages(2) syscall returns valid results.
|
||
|
|
*/
|
||
|
|
#define pg_numa_touch_mem_if_required(ro_volatile_var, ptr) \
|
||
|
|
ro_volatile_var = *(volatile uint64 *) ptr
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#define pg_numa_touch_mem_if_required(ro_volatile_var, ptr) \
|
||
|
|
do {} while(0)
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* PG_NUMA_H */
|