38 lines
669 B
C
38 lines
669 B
C
#ifndef __SEMAPHORE_H__
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#define __SEMAPHORE_H__
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#include "types.h"
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#include "Tier0/atomic_operations.h"
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typedef T_ATOMIC T_SEMAPHORE;
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static inline void semaphore_init(T_SEMAPHORE *Semaphore)
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{
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atomic_set(Semaphore, 1);
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}
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static inline void semaphore_init_with_number(T_SEMAPHORE *Semaphore, u32 N)
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{
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atomic_set(Semaphore, N);
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}
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static inline void semaphore_acquire(T_SEMAPHORE *Semaphore)
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{
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// Spinlock again
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while(1)
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{
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if (atomic_read(Semaphore) > 0)
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{
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atomic_dec(Semaphore);
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break;
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}
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}
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}
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static inline void semaphore_release(T_SEMAPHORE *Semaphore)
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{
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atomic_inc(Semaphore);
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}
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#endif
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