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| author | Peter Eisentraut <peter@eisentraut.org> | 2019-11-27 11:21:02 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2019-11-27 12:27:20 +0100 |
| commit | 4513d8b07bf342028ca95250b6e1d759858abdd3 (patch) | |
| tree | 35612e4af617a4319e619267bd147fe817b8d28d /src/include/pg_config_manual.h | |
| parent | 47a3c7fa06538c181be815db44b5d7e8efe696ef (diff) | |
Move configure --disable-float8-byval to pg_config_manual.h
This build option was once useful to maintain compatibility with
version-0 functions, but those are no longer supported, so this option
is no longer useful for end users. We keep the option available to
developers in pg_config_manual.h so that it is easy to test the
pass-by-reference code paths without having to fire up a 32-bit
machine.
Discussion: https://www.postgresql.org/message-id/flat/f3e1e576-2749-bbd7-2d57-3f9dcf75255a@2ndquadrant.com
Diffstat (limited to 'src/include/pg_config_manual.h')
| -rw-r--r-- | src/include/pg_config_manual.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h index 743401cb969..61b667d1663 100644 --- a/src/include/pg_config_manual.h +++ b/src/include/pg_config_manual.h @@ -57,6 +57,19 @@ #define PARTITION_MAX_KEYS 32 /* + * Decide whether built-in 8-byte types, including float8, int8, and + * timestamp, are passed by value. This is on by default if sizeof(Datum) >= + * 8 (that is, on 64-bit platforms). If sizeof(Datum) < 8 (32-bit platforms), + * this must be off. We keep this here as an option so that it is easy to + * test the pass-by-reference code paths on 64-bit platforms. + * + * Changing this requires an initdb. + */ +#if SIZEOF_VOID_P >= 8 +#define USE_FLOAT8_BYVAL 1 +#endif + +/* * When we don't have native spinlocks, we use semaphores to simulate them. * Decreasing this value reduces consumption of OS resources; increasing it * may improve performance, but supplying a real spinlock implementation is |