23 lines
569 B
C
23 lines
569 B
C
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/* file: chan.h -- public interface to message passingfunctions. */
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#ifndef CHAN_DEFINED
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#define CHAN_DEFINED
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#include "sem.h"
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#include "thread.h"
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typedef struct {
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Sem *rblock; /* receivers block on this */
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Sem *sblock; /* senders block on this */
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Sem *send_serialiser; /* to prevent concurrent senders clashing */
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int data;
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} Chan;
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Chan *chan_create(void);
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int chan_destroy(Chan *chan);
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void chan_send(Chan *chan, int sentdata);
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void chan_receive(Chan *chan, int *receiveddata);
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#endif
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/* end file: chan.h */
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