Add atomic_inc_return to atomics.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@ubuntu.com>
Acked-By: Emil Velikov <emil.l.velikov@gmail.com>

diff --git a/xf86atomic.h b/xf86atomic.h
index 8c4b696..17fb088 100644 (file)
--- a/xf86atomic.h
+++ b/xf86atomic.h
@@ -49,6 +49,7 @@ typedef struct {
 # define atomic_read(x) ((x)->atomic)
 # define atomic_set(x, val) ((x)->atomic = (val))
 # define atomic_inc(x) ((void) __sync_fetch_and_add (&(x)->atomic, 1))
+# define atomic_inc_return(x) (__sync_add_and_fetch (&(x)->atomic, 1))
 # define atomic_dec_and_test(x) (__sync_fetch_and_add (&(x)->atomic, -1) == 1)
 # define atomic_add(x, v) ((void) __sync_add_and_fetch(&(x)->atomic, (v)))
 # define atomic_dec(x, v) ((void) __sync_sub_and_fetch(&(x)->atomic, (v)))
@@ -68,6 +69,7 @@ typedef struct {
 # define atomic_read(x) AO_load_full(&(x)->atomic)
 # define atomic_set(x, val) AO_store_full(&(x)->atomic, (val))
 # define atomic_inc(x) ((void) AO_fetch_and_add1_full(&(x)->atomic))
+# define atomic_inc_return(x) (AO_fetch_and_add1_full(&(x)->atomic) + 1)
 # define atomic_add(x, v) ((void) AO_fetch_and_add_full(&(x)->atomic, (v)))
 # define atomic_dec(x, v) ((void) AO_fetch_and_add_full(&(x)->atomic, -(v)))
 # define atomic_dec_and_test(x) (AO_fetch_and_sub1_full(&(x)->atomic) == 1)
@@ -91,6 +93,7 @@ typedef struct { LIBDRM_ATOMIC_TYPE atomic; } atomic_t;
 # define atomic_read(x) (int) ((x)->atomic)
 # define atomic_set(x, val) ((x)->atomic = (LIBDRM_ATOMIC_TYPE)(val))
 # define atomic_inc(x) (atomic_inc_uint (&(x)->atomic))
+# define atomic_inc_return (atomic_inc_uint_nv(&(x)->atomic))
 # define atomic_dec_and_test(x) (atomic_dec_uint_nv(&(x)->atomic) == 0)
 # define atomic_add(x, v) (atomic_add_int(&(x)->atomic, (v)))
 # define atomic_dec(x, v) (atomic_add_int(&(x)->atomic, -(v)))