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postgres/src/include/pg_config.h.in
Tomas Vondra 65c298f61f Add support for basic NUMA awareness 
Add basic NUMA awareness routines, using a minimal src/port/pg_numa.c
portability wrapper and an optional build dependency, enabled by
--with-libnuma configure option. For now this is Linux-only, other
platforms may be supported later.

A built-in SQL function pg_numa_available() allows checking NUMA
support, i.e. that the server was built/linked with the NUMA library.

The main function introduced is pg_numa_query_pages(), which allows
determining the NUMA node for individual memory pages. Internally the
function uses move_pages(2) syscall, as it allows batching, and is more
efficient than get_mempolicy(2).

Author: Jakub Wartak <jakub.wartak@enterprisedb.com>
Co-authored-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Tomas Vondra <tomas@vondra.me>
Discussion: https://postgr.es/m/CAKZiRmxh6KWo0aqRqvmcoaX2jUxZYb4kGp3N%3Dq1w%2BDiH-696Xw%40mail.gmail.com
2025-04-07 23:08:17 +02:00

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/* src/include/pg_config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
#undef AC_APPLE_UNIVERSAL_BUILD
/* The normal alignment of `double', in bytes. */
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/* The normal alignment of `int', in bytes. */
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/* The normal alignment of `int64_t', in bytes. */
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/* The normal alignment of `long', in bytes. */
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/* The normal alignment of `PG_INT128_TYPE', in bytes. */
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/* The normal alignment of `short', in bytes. */
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/* Size of a disk block --- this also limits the size of a tuple. You can set
it bigger if you need bigger tuples (although TOAST should reduce the need
to have large tuples, since fields can be spread across multiple tuples).
BLCKSZ must be a power of 2. The maximum possible value of BLCKSZ is
currently 2^15 (32768). This is determined by the 15-bit widths of the
lp_off and lp_len fields in ItemIdData (see include/storage/itemid.h).
Changing BLCKSZ requires an initdb. */
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/* Saved arguments from configure */
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/* Define to the default TCP port number on which the server listens and to
which clients will try to connect. This can be overridden at run-time, but
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(--with-pgport=PORTNUM) */
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/* Define to 1 if your compiler understands __builtin_unreachable. */
#undef HAVE__BUILTIN_UNREACHABLE
/* Define to 1 if you have __cpuid. */
#undef HAVE__CPUID
/* Define to 1 if you have __cpuidex. */
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/* Define to 1 if you have __get_cpuid. */
#undef HAVE__GET_CPUID
/* Define to 1 if you have __get_cpuid_count. */
#undef HAVE__GET_CPUID_COUNT
/* Define to 1 if your compiler understands _Static_assert. */
#undef HAVE__STATIC_ASSERT
/* Define as the maximum alignment requirement of any C data type. */
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/* Define bytes to use libc memset(). */
#undef MEMSET_LOOP_LIMIT
/* Define to the OpenSSL API version in use. This avoids deprecation warnings
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/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
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/* Define to the full name and version of this package. */
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/* Define to the one symbol short name of this package. */
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/* Define to the home page for this package. */
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/* Define to the version of this package. */
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/* Define to the name of a signed 128-bit integer type. */
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/* Define to the name of the default PostgreSQL service principal in Kerberos
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/* PostgreSQL major version as a string */
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/* PostgreSQL major version number */
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/* PostgreSQL minor version number */
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/* Define to best printf format archetype, usually gnu_printf if available. */
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/* PostgreSQL version as a string */
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/* PostgreSQL version as a number */
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/* A string containing the version number, platform, and C compiler */
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/* Define to necessary symbol if this constant uses a non-standard name on
your system. */
#undef PTHREAD_CREATE_JOINABLE
/* RELSEG_SIZE is the maximum number of blocks allowed in one disk file. Thus,
the maximum size of a single file is RELSEG_SIZE * BLCKSZ; relations bigger
than that are divided into multiple files. RELSEG_SIZE * BLCKSZ must be
less than your OS' limit on file size. This is often 2 GB or 4GB in a
32-bit operating system, unless you have large file support enabled. By
default, we make the limit 1 GB to avoid any possible integer-overflow
problems within the OS. A limit smaller than necessary only means we divide
a large relation into more chunks than necessary, so it seems best to err
in the direction of a small limit. A power-of-2 value is recommended to
save a few cycles in md.c, but is not absolutely required. Changing
RELSEG_SIZE requires an initdb. */
#undef RELSEG_SIZE
/* The size of `long', as computed by sizeof. */
#undef SIZEOF_LONG
/* The size of `long long', as computed by sizeof. */
#undef SIZEOF_LONG_LONG
/* The size of `off_t', as computed by sizeof. */
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/* The size of `size_t', as computed by sizeof. */
#undef SIZEOF_SIZE_T
/* The size of `void *', as computed by sizeof. */
#undef SIZEOF_VOID_P
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define to 1 if strerror_r() returns int. */
#undef STRERROR_R_INT
/* Define to 1 to use ARMv8 CRC Extension. */
#undef USE_ARMV8_CRC32C
/* Define to 1 to use ARMv8 CRC Extension with a runtime check. */
#undef USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK
/* Define to 1 to build with assertion checks. (--enable-cassert) */
#undef USE_ASSERT_CHECKING
/* Define to 1 to use AVX-512 CRC algorithms with a runtime check. */
#undef USE_AVX512_CRC32C_WITH_RUNTIME_CHECK
/* Define to 1 to use AVX-512 popcount instructions with a runtime check. */
#undef USE_AVX512_POPCNT_WITH_RUNTIME_CHECK
/* Define to 1 to build with Bonjour support. (--with-bonjour) */
#undef USE_BONJOUR
/* Define to 1 to build with BSD Authentication support. (--with-bsd-auth) */
#undef USE_BSD_AUTH
/* Define to build with ICU support. (--with-icu) */
#undef USE_ICU
/* Define to 1 to build with injection points. (--enable-injection-points) */
#undef USE_INJECTION_POINTS
/* Define to 1 to build with LDAP support. (--with-ldap) */
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/* Define to 1 to build with libcurl support. (--with-libcurl) */
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/* Define to 1 to build with NUMA support. (--with-libnuma) */
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/* Define to build with io_uring support. (--with-liburing) */
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/* Define to 1 to build with XML support. (--with-libxml) */
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/* Define to 1 to use XSLT support when building contrib/xml2.
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/* Define to 1 to build with LLVM based JIT support. (--with-llvm) */
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/* Define to 1 to use LoongArch CRCC instructions. */
#undef USE_LOONGARCH_CRC32C
/* Define to 1 to build with LZ4 support. (--with-lz4) */
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/* Define to select named POSIX semaphores. */
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/* Define to 1 to build with OpenSSL support. (--with-ssl=openssl) */
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/* Define to 1 to build with PAM support. (--with-pam) */
#undef USE_PAM
/* Define to 1 to use software CRC-32C implementation (slicing-by-8). */
#undef USE_SLICING_BY_8_CRC32C
/* Define to 1 use Intel SSE 4.2 CRC instructions. */
#undef USE_SSE42_CRC32C
/* Define to 1 to use Intel SSE 4.2 CRC instructions with a runtime check. */
#undef USE_SSE42_CRC32C_WITH_RUNTIME_CHECK
/* Define to 1 to use SVE popcount instructions with a runtime check. */
#undef USE_SVE_POPCNT_WITH_RUNTIME_CHECK
/* Define to build with systemd support. (--with-systemd) */
#undef USE_SYSTEMD
/* Define to select SysV-style semaphores. */
#undef USE_SYSV_SEMAPHORES
/* Define to select SysV-style shared memory. */
#undef USE_SYSV_SHARED_MEMORY
/* Define to select unnamed POSIX semaphores. */
#undef USE_UNNAMED_POSIX_SEMAPHORES
/* Define to select Win32-style semaphores. */
#undef USE_WIN32_SEMAPHORES
/* Define to select Win32-style shared memory. */
#undef USE_WIN32_SHARED_MEMORY
/* Define to 1 to build with ZSTD support. (--with-zstd) */
#undef USE_ZSTD
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
# undef WORDS_BIGENDIAN
# endif
#endif
/* Size of a WAL file block. This need have no particular relation to BLCKSZ.
XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
buffers, else direct I/O may fail. Changing XLOG_BLCKSZ requires an initdb.
*/
#undef XLOG_BLCKSZ
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
#undef _LARGEFILE_SOURCE
/* Define for large files, on AIX-style hosts. */
#undef _LARGE_FILES
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
#undef inline
#endif
/* Define to keyword to use for C99 restrict support, or to nothing if not
supported */
#undef pg_restrict
/* Define to the equivalent of the C99 'restrict' keyword, or to
nothing if this is not supported. Do not define if restrict is
supported directly. */
#undef restrict
/* Work around a bug in Sun C++: it does not support _Restrict or
__restrict__, even though the corresponding Sun C compiler ends up with
"#define restrict _Restrict" or "#define restrict __restrict__" in the
previous line. Perhaps some future version of Sun C++ will work with
restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
#if defined __SUNPRO_CC && !defined __RESTRICT
# define _Restrict
# define __restrict__
#endif
/* Define to how the compiler spells `typeof'. */
#undef typeof
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