47 lines
985 B
C
47 lines
985 B
C
#include <rt/assert.h>
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#include <rt/atomic.h>
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#include <rt/log.h>
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#include <rt/once.h>
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#include <rt/task.h>
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#include <rt/trap.h>
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#define ITERATIONS 10000UL
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static RT_ONCE(once);
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static RT_SEM(sem, 0);
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static rt_atomic_ulong x = 0;
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static void fn(void)
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{
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rt_logf("once: %s\n", rt_task_name());
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rt_atomic_fetch_add(&x, 1, RT_ATOMIC_RELAXED);
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}
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static void oncer(void)
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{
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rt_task_drop_privilege();
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for (unsigned long i = 0; i < ITERATIONS; ++i)
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{
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rt_once_call(&once, fn);
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rt_sem_wait(&sem);
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}
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}
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static void oncer_reset(void)
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{
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rt_task_drop_privilege();
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for (unsigned long i = 0; i < ITERATIONS; ++i)
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{
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rt_once_call(&once, fn);
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rt_atomic_store(&once.done, 0, RT_ATOMIC_RELEASE);
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rt_sem_post(&sem);
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}
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rt_assert(rt_atomic_load(&x, RT_ATOMIC_RELAXED) == ITERATIONS,
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"x was not incremented enough");
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rt_trap();
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}
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RT_TASK(oncer, RT_STACK_MIN, 1);
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RT_TASK(oncer_reset, RT_STACK_MIN, 1);
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