X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=tests%2Fapi_gcc.h;h=93b72442cab1f37dd7f7dd4b69560ed2e86a77ed;hp=2db1ef2d2c1c4c6de330d3820e3ca31b9223ca56;hb=901bbb4413cd3e236717687b559725fb3979a6cf;hpb=2f8a5ae7266ad4fb9ba77cfa1b4a7104d0465096 diff --git a/tests/api_gcc.h b/tests/api_gcc.h index 2db1ef2..93b7244 100644 --- a/tests/api_gcc.h +++ b/tests/api_gcc.h @@ -75,188 +75,7 @@ /* #define CAA_CACHE_LINE_SIZE 64 */ #define ____cacheline_internodealigned_in_smp \ - __attribute__((__aligned__(1 << 6))) - -#define LOCK_PREFIX "lock ; " - -#if 0 /* duplicate with arch_atomic.h */ -/* - * Atomic data structure, initialization, and access. - */ - -typedef struct { volatile int counter; } atomic_t; - -#define ATOMIC_INIT(i) { (i) } - -#define atomic_read(v) ((v)->counter) -#define atomic_set(v, i) (((v)->counter) = (i)) - -/* - * Atomic operations. - */ - -/** - * atomic_add - add integer to atomic variable - * @i: integer value to add - * @v: pointer of type atomic_t - * - * Atomically adds @i to @v. - */ - -static __inline__ void atomic_add(int i, atomic_t *v) -{ - (void)__sync_fetch_and_add(&v->counter, i); -} - -/** - * atomic_sub - subtract the atomic variable - * @i: integer value to subtract - * @v: pointer of type atomic_t - * - * Atomically subtracts @i from @v. - */ -static __inline__ void atomic_sub(int i, atomic_t *v) -{ - (void)__sync_fetch_and_add(&v->counter, -i); -} - -/** - * atomic_sub_and_test - subtract value from variable and test result - * @i: integer value to subtract - * @v: pointer of type atomic_t - * - * Atomically subtracts @i from @v and returns - * true if the result is zero, or false for all - * other cases. - */ -static __inline__ int atomic_sub_and_test(int i, atomic_t *v) -{ - return __sync_add_and_fetch(&v->counter, -i) == 0; -} - -/** - * atomic_inc - increment atomic variable - * @v: pointer of type atomic_t - * - * Atomically increments @v by 1. - */ -static __inline__ void atomic_inc(atomic_t *v) -{ - (void)__sync_fetch_and_add(&v->counter, 1); -} - -/** - * atomic_dec - decrement atomic variable - * @v: pointer of type atomic_t - * - * Atomically decrements @v by 1. - */ -static __inline__ void atomic_dec(atomic_t *v) -{ - (void)__sync_fetch_and_add(&v->counter, -1); -} - -/** - * atomic_dec_and_test - decrement and test - * @v: pointer of type atomic_t - * - * Atomically decrements @v by 1 and - * returns true if the result is 0, or false for all other - * cases. - */ -static __inline__ int atomic_dec_and_test(atomic_t *v) -{ - return __sync_add_and_fetch(&v->counter, -1) == 0; -} - -/** - * atomic_inc_and_test - increment and test - * @v: pointer of type atomic_t - * - * Atomically increments @v by 1 - * and returns true if the result is zero, or false for all - * other cases. - */ -static __inline__ int atomic_inc_and_test(atomic_t *v) -{ - return __sync_add_and_fetch(&v->counter, 1) == 0; -} - -/** - * atomic_add_negative - add and test if negative - * @v: pointer of type atomic_t - * @i: integer value to add - * - * Atomically adds @i to @v and returns true - * if the result is negative, or false when - * result is greater than or equal to zero. - */ -static __inline__ int atomic_add_negative(int i, atomic_t *v) -{ - return __sync_add_and_fetch(&v->counter, i) < 0; -} - -/** - * atomic_add_return - add and return - * @v: pointer of type atomic_t - * @i: integer value to add - * - * Atomically adds @i to @v and returns @i + @v - */ -static __inline__ int atomic_add_return(int i, atomic_t *v) -{ - return __sync_add_and_fetch(&v->counter, i); -} - -static __inline__ int atomic_sub_return(int i, atomic_t *v) -{ - return atomic_add_return(-i,v); -} - -static inline unsigned int -cmpxchg(volatile long *ptr, long oldval, long newval) -{ - return __sync_val_compare_and_swap(ptr, oldval, newval); -} - -#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) -#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) - -/** - * atomic_add_unless - add unless the number is a given value - * @v: pointer of type atomic_t - * @a: the amount to add to v... - * @u: ...unless v is equal to u. - * - * Atomically adds @a to @v, so long as it was not @u. - * Returns non-zero if @v was not @u, and zero otherwise. - */ -#define atomic_add_unless(v, a, u) \ -({ \ - int c, old; \ - c = atomic_read(v); \ - for (;;) { \ - if (unlikely(c == (u))) \ - break; \ - old = atomic_cmpxchg((v), c, c + (a)); \ - if (likely(old == c)) \ - break; \ - c = old; \ - } \ - c != (u); \ -}) -#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) - -#define atomic_inc_return(v) (atomic_add_return(1,v)) -#define atomic_dec_return(v) (atomic_sub_return(1,v)) - -/* Atomic operations are already serializing on x86 */ -#define smp_mb__before_atomic_dec() cmm_barrier() -#define smp_mb__after_atomic_dec() cmm_barrier() -#define smp_mb__before_atomic_inc() cmm_barrier() -#define smp_mb__after_atomic_inc() cmm_barrier() - -#endif //0 /* duplicate with arch_atomic.h */ + __attribute__((__aligned__(CAA_CACHE_LINE_SIZE))) /* * api_pthreads.h: API mapping to pthreads environment.