28 lines
278 B
C
28 lines
278 B
C
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#include "u.h"
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#include "libc.h"
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#include "thread.h"
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static long
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refadd(Ref *r, long a)
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{
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long ref;
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lock(&r->lock);
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r->ref += a;
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ref = r->ref;
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unlock(&r->lock);
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return ref;
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}
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long
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incref(Ref *r)
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{
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return refadd(r, 1);
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}
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long
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decref(Ref *r)
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{
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return refadd(r, -1);
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}
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