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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2007-11-01 19:29:00 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2007-11-01 22:26:06 +0000 |
| commit | 6e0151df469b67ea56c36f7b0050b5d5c959c67d (patch) | |
| tree | 3d48af792b0147faa1ea7967f12c8dacb1b72530 /src/cairo-atomic.c | |
| parent | a26118cf5bf4063a4bdac2bece1bba0be776c801 (diff) | |
| download | cairo-6e0151df469b67ea56c36f7b0050b5d5c959c67d.tar.gz | |
[cairo-atomic] Rearrange code under the correct ifdefs.
The atomic get/set depend upon NEED_MEMORY_BARRIER which is separate
from HAVE_ATOMIC_OPS.
Diffstat (limited to 'src/cairo-atomic.c')
| -rw-r--r-- | src/cairo-atomic.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/src/cairo-atomic.c b/src/cairo-atomic.c index f9e4de72e..9e388ac1a 100644 --- a/src/cairo-atomic.c +++ b/src/cairo-atomic.c @@ -58,37 +58,39 @@ _cairo_atomic_int_dec_and_test (int *x) } int -_cairo_atomic_int_get (int *x) +_cairo_atomic_int_cmpxchg (int *x, int oldv, int newv) { int ret; CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); ret = *x; + if (ret == oldv) + *x = newv; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); return ret; } -void -_cairo_atomic_int_set (int *x, int value) -{ - CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); - *x = value; - CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); -} +#endif +#ifdef CAIRO_ATOMIC_OP_NEEDS_MEMORY_BARRIER int -_cairo_atomic_int_cmpxchg (int *x, int oldv, int newv) +_cairo_atomic_int_get (int *x) { int ret; CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); ret = *x; - if (ret == oldv) - *x = newv; CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); return ret; } +void +_cairo_atomic_int_set (int *x, int value) +{ + CAIRO_MUTEX_LOCK (_cairo_atomic_mutex); + *x = value; + CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex); +} #endif |