diff options
| author | Eric S. Raymond <esr@thyrsus.com> | 2011-06-30 07:52:35 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-06-30 07:52:35 -0400 |
| commit | 3bbc4988a8cc1e9bedc34e4bda6e7e7f76140cf9 (patch) | |
| tree | d31994ff887d43681d0469a641a6b6e62f9196c6 /libgps_shm.c | |
| parent | cfb5daa16285c63739384dcf256a44b2134e7828 (diff) | |
| download | gpsd-3bbc4988a8cc1e9bedc34e4bda6e7e7f76140cf9.tar.gz | |
Comment fix.
Diffstat (limited to 'libgps_shm.c')
| -rw-r--r-- | libgps_shm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libgps_shm.c b/libgps_shm.c index ba6e5d49..c14ef4ea 100644 --- a/libgps_shm.c +++ b/libgps_shm.c @@ -66,8 +66,8 @@ int gps_shm_read(struct gps_data_t *gpsdata) /* * Following block of instructions must not be reordered, otherwise - * havoc will ensue. asm volatile("sfence") is a GCCism intended - * to prevent reordering. + * havoc will ensue. The barrier() call should prevent reordering + * of the data accesses. * * This is a simple optimistic-concurrency technique. We wrote * the second bookend first, then the data, then the first bookend. |