diff options
Diffstat (limited to 'source/include')
| -rw-r--r-- | source/include/includes.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/source/include/includes.h b/source/include/includes.h index bf85bcc0f4a..20d784e19df 100644 --- a/source/include/includes.h +++ b/source/include/includes.h @@ -55,6 +55,17 @@ #endif #endif /* RELIANTUNIX */ +/* if we have both SYSV IPC and shared mmap then we need to choose. For most + systems it is much faster to use SYSV IPC, but under Linux it is + about 5 times faster to use fcntl, so for Linux systems we force + fcntl based locking */ +#if (defined(HAVE_SYSV_IPC) && defined(HAVE_SHARED_MMAP)) +# ifdef LINUX +# undef HAVE_SYSV_IPC +# else +# undef HAVE_SHARED_MMAP +# endif +#endif #include <sys/types.h> |