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[ARM] update atomic ops to use the ldr/strex instructions on armv6+

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This commit is contained in:
Travis Geiselbrecht
2008-09-13 15:13:21 -07:00
parent b26a2d02ab
commit 8d529ef70a
3 changed files with 101 additions and 1 deletions
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45
app/tests/thread_tests.c
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@@ -267,13 +267,56 @@ void context_switch_test(void)
thread_sleep(100);
}
static volatile int atomic;
static volatile int atomic_count;
static int atomic_tester(void *arg)
{
int add = (int)arg;
int i;
TRACEF("add %d\n", add);
for (i=0; i < 1000000; i++) {
atomic_add(&atomic, add);
}
int old = atomic_add(&atomic_count, -1);
TRACEF("exiting, old count %d\n", old);
return 0;
}
static void atomic_test(void)
{
atomic = 0;
atomic_count = 8;
thread_resume(thread_create("atomic tester 1", &atomic_tester, (void *)1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 1", &atomic_tester, (void *)1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 1", &atomic_tester, (void *)1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 1", &atomic_tester, (void *)1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 2", &atomic_tester, (void *)-1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 2", &atomic_tester, (void *)-1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 2", &atomic_tester, (void *)-1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
thread_resume(thread_create("atomic tester 2", &atomic_tester, (void *)-1, LOW_PRIORITY, DEFAULT_STACK_SIZE));
while (atomic_count > 0) {
thread_sleep(1);
}
printf("atomic count == %d (should be zero)\n", atomic);
}
int thread_tests(void)
{
mutex_test();
// event_test();
event_test();
thread_sleep(200);
context_switch_test();
atomic_test();
return 0;
}