static void _SMP_Multicasts_try_process( void ) { unsigned long message; Per_CPU_Control *cpu_self; ISR_Level isr_level; _ISR_Local_disable( isr_level ); cpu_self = _Per_CPU_Get(); message = _Atomic_Load_ulong( &cpu_self->message, ATOMIC_ORDER_RELAXED ); if ( message & SMP_MESSAGE_MULTICAST_ACTION ) { if ( _Atomic_Compare_exchange_ulong( &cpu_self->message, &message, message & ~SMP_MESSAGE_MULTICAST_ACTION, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ) ) { _SMP_Multicast_actions_process(); } } _ISR_Local_enable( isr_level ); }
static void test_simple_atomic_compare_exchange_body(test_context *ctx) { unsigned int ei; unsigned int vi; uintptr_t ep; uintptr_t vp; unsigned long el; unsigned long vl; bool success; puts("=== atomic simple compare exchange test case ==="); _Atomic_Store_uint(&ctx->uint_atomic, 1, ATOMIC_ORDER_RELAXED); ei = 2; success = _Atomic_Compare_exchange_uint( &ctx->uint_atomic, &ei, 3, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(!success); rtems_test_assert(ei == 1); success = _Atomic_Compare_exchange_uint( &ctx->uint_atomic, &ei, 3, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(success); vi = _Atomic_Load_uint(&ctx->uint_atomic, ATOMIC_ORDER_RELAXED); rtems_test_assert(vi == 3); _Atomic_Store_uintptr(&ctx->uintptr_atomic, 111, ATOMIC_ORDER_RELAXED); ep = 211; success = _Atomic_Compare_exchange_uintptr( &ctx->uintptr_atomic, &ep, 311, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(!success); rtems_test_assert(ep == 111); success = _Atomic_Compare_exchange_uintptr( &ctx->uintptr_atomic, &ep, 311, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(success); vp = _Atomic_Load_uintptr(&ctx->uintptr_atomic, ATOMIC_ORDER_RELAXED); rtems_test_assert(vp == 311); _Atomic_Store_ulong(&ctx->ulong_atomic, 10, ATOMIC_ORDER_RELAXED); el = 11; success = _Atomic_Compare_exchange_ulong( &ctx->ulong_atomic, &el, 12, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(!success); rtems_test_assert(el == 10); success = _Atomic_Compare_exchange_ulong( &ctx->ulong_atomic, &el, 12, ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED ); rtems_test_assert(success); vl = _Atomic_Load_ulong(&ctx->ulong_atomic, ATOMIC_ORDER_RELAXED); rtems_test_assert(vl == 12); }