27 lines
488 B
C
27 lines
488 B
C
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/*
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Copyright (c) 2002, Thomas Kurschel
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Part of Radeon driver
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Benaphore definition
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*/
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#ifndef _BENAPHORE_H
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#define _BENAPHORE_H
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typedef struct {
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sem_id sem;
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int32 ben;
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} benaphore;
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#define INIT_BEN(prefix, x) x.sem = create_sem(0, #prefix " benaphore"); x.ben = 0;
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#define ACQUIRE_BEN(x) if((atomic_add(&(x.ben), 1)) >= 1) acquire_sem(x.sem);
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#define RELEASE_BEN(x) if((atomic_add(&(x.ben), -1)) > 1) release_sem(x.sem);
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#define DELETE_BEN(x) delete_sem(x.sem);
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#endif
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