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25 lines
533 B
C
25 lines
533 B
C
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#ifndef EXOSPHERE_LOCK_H
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#define EXOSPHERE_LOCK_H
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#include <stdbool.h>
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/* Simple atomics driver for Exosphere. */
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/* Acquire a lock. */
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static inline void lock_acquire(bool *l) {
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while (__atomic_test_and_set(l, __ATOMIC_ACQUIRE)) {
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/* Wait to acquire lock. */
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}
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}
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/* Release a lock. */
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static inline void lock_release(bool *l) {
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__atomic_clear(l, __ATOMIC_RELEASE);
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}
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/* Try to acquire a lock. */
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static inline bool lock_try_acquire(bool *l) {
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return __atomic_test_and_set(l, __ATOMIC_ACQUIRE);
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}
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#endif
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