diff options
| author | Bruce Momjian | 2003-09-12 16:10:27 +0000 |
|---|---|---|
| committer | Bruce Momjian | 2003-09-12 16:10:27 +0000 |
| commit | 06e3ec7a542ede97986cbab8066b1293b1cd2751 (patch) | |
| tree | 618d6bccc0f240e2d784ffb1474437104a46acc3 /src | |
| parent | 69a46e9ce1f80056f5b72aaa80b29821bdf821c1 (diff) | |
Implement compiler #error if spinlock code not found, add configure flag
to bypass the error, --without-spinlocks.
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/pg_config.h.in | 3 | ||||
| -rw-r--r-- | src/include/storage/s_lock.h | 8 |
2 files changed, 9 insertions, 2 deletions
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in index 03874772cd0..8c04b8e6b47 100644 --- a/src/include/pg_config.h.in +++ b/src/include/pg_config.h.in @@ -357,6 +357,9 @@ /* Define to 1 if you have the `snprintf' function. */ #undef HAVE_SNPRINTF +/* Define to 1 if you have spinlocks. */ +#undef HAVE_SPINLOCKS + /* Define to 1 if you have the `srandom' function. */ #undef HAVE_SRANDOM diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h index 82795180439..4d49c52c711 100644 --- a/src/include/storage/s_lock.h +++ b/src/include/storage/s_lock.h @@ -63,7 +63,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: s_lock.h,v 1.112 2003/08/04 02:40:15 momjian Exp $ + * $Id: s_lock.h,v 1.113 2003/09/12 16:10:27 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -537,7 +537,11 @@ extern slock_t wc_tas(volatile slock_t *lock); -#else /* !HAS_TEST_AND_SET */ +#else /* HAS_TEST_AND_SET */ + +#ifdef HAVE_SPINLOCKS +#error This platform does not support native spinlocks. To continue the compile, rerun configure using --without-spinlocks. However, performance will be poor. Please report this to pgsql-bugs@postgresql.org. +#endif /* * Fake spinlock implementation using semaphores --- slow and prone |