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Last change
on this file was 142, checked in by ktk, 25 years ago |
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| [142] | 1 | /* $Id: atomic.h 142 2000-04-23 14:55:46Z ktk $ */
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| 2 |
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| 3 | #ifndef __ARCH_I386_ATOMIC__
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| 4 | #define __ARCH_I386_ATOMIC__
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| 5 |
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| 6 | #define LOCK
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| 7 |
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| 8 | typedef struct { int counter; } atomic_t;
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| 9 |
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| 10 | #define ATOMIC_INIT(i) { (i) }
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| 11 |
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| 12 | #define atomic_read(v) ((v)->counter)
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| 13 | #define atomic_set(v,i) (((v)->counter) = (i))
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| 14 |
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| 15 | static void atomic_add(int i, volatile atomic_t *v);
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| 16 | static void atomic_sub(int i, volatile atomic_t *v);
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| 17 | static void atomic_inc(volatile atomic_t *v);
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| 18 | static void atomic_dec(volatile atomic_t *v);
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| 19 | static int atomic_dec_and_test(volatile atomic_t *v);
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| 20 | extern int atomic_add_negative(int i, volatile atomic_t *v);
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| 21 |
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| 22 | /* These are x86-specific, used by some header files */
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| 23 | #define atomic_clear_mask(mask, addr)
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| 24 |
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| 25 | #define atomic_set_mask(mask, addr)
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| 26 |
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| 27 | #endif
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