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Diffstat (limited to 'testsuites/smptests/smpatomic07/tasks.c')
| -rw-r--r-- | testsuites/smptests/smpatomic07/tasks.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/testsuites/smptests/smpatomic07/tasks.c b/testsuites/smptests/smpatomic07/tasks.c new file mode 100644 index 0000000000..88c69be6fb --- /dev/null +++ b/testsuites/smptests/smpatomic07/tasks.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2012 Deng Hengyi. + * + * This test case is to test atomic compare and exchange operation. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "system.h" + +#include <stdlib.h> +#include <rtems/rtems/atomic.h> + +#define TEST_REPEAT 200000 + +#define ATOMIC_CAS_NO_BARRIER(NAME, TYPE, cpuid, mem_bar) \ +{ \ + Atomic_##TYPE a = 0, b = 0; \ + unsigned int i; \ + int r; \ + for (i = 0; i < TEST_REPEAT; i++){ \ + a = rand() % (Atomic_##TYPE)-1; \ + b = a; \ + r = _Atomic_Compare_exchange_##NAME(&b, a + 1, a - 1, mem_bar); \ + if(r != 0){ \ + locked_printf("\nCPU%d _Atomic_Compare_exchange_" #NAME ": FAILED\n", cpuid); \ + rtems_test_exit( 0 ); \ + } \ + b = a; \ + r = _Atomic_Compare_exchange_##NAME(&b, a, a - 1, mem_bar); \ + if((r == 0) ||((r != 0) && ((a - 1) != b))){ \ + locked_printf("\nCPU%d _Atomic_Compare_exchange_" #NAME ": FAILED\n", cpuid); \ + rtems_test_exit( 0 ); \ + } \ + b = a; \ + r = _Atomic_Compare_exchange_##NAME(&b, a + 1, a, mem_bar); \ + if(r != 0){ \ + locked_printf("\nCPU%d _Atomic_Compare_exchange_" #NAME ": FAILED\n", cpuid); \ + rtems_test_exit( 0 ); \ + } \ + } \ + locked_printf("\nCPU%d _Atomic_Compare_exchange_" #NAME ": SUCCESS\n", cpuid); \ +} + +rtems_task Test_task( + rtems_task_argument argument + ) +{ + int cpu_num; + char name[5]; + char *p; + + /* Get the task name */ + p = rtems_object_get_name( RTEMS_SELF, 5, name ); + rtems_test_assert( p != NULL ); + + /* Get the CPU Number */ + cpu_num = bsp_smp_processor_id(); + + /* Print that the task is up and running. */ + /* test relaxed barrier */ + ATOMIC_CAS_NO_BARRIER(int, Int, cpu_num, ATOMIC_RELAXED_BARRIER); + + ATOMIC_CAS_NO_BARRIER(long, Long, cpu_num, ATOMIC_RELAXED_BARRIER); + + ATOMIC_CAS_NO_BARRIER(ptr, Pointer, cpu_num, ATOMIC_RELAXED_BARRIER); + + ATOMIC_CAS_NO_BARRIER(32, Int32, cpu_num, ATOMIC_RELAXED_BARRIER); + + /* test acquire barrier */ + ATOMIC_CAS_NO_BARRIER(int, Int, cpu_num, ATOMIC_ACQUIRE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(long, Long, cpu_num, ATOMIC_ACQUIRE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(ptr, Pointer, cpu_num, ATOMIC_ACQUIRE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(32, Int32, cpu_num, ATOMIC_ACQUIRE_BARRIER); + + /* test release barrier */ + ATOMIC_CAS_NO_BARRIER(int, Int, cpu_num, ATOMIC_RELEASE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(long, Long, cpu_num, ATOMIC_RELEASE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(ptr, Pointer, cpu_num, ATOMIC_RELEASE_BARRIER); + + ATOMIC_CAS_NO_BARRIER(32, Int32, cpu_num, ATOMIC_RELEASE_BARRIER); + +// ATOMIC_CAS_NO_BARRIER(64, cpu_num); + + /* Set the flag that the task is up and running */ + TaskRan[cpu_num] = true; + + /* Drop into a loop which will keep this task on + * running on the cpu. + */ + while(1); +} |