53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
#ifndef _SPECIFIC_COMM_H_
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#define _SPECIFIC_COMM_H_ 1
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/* Non standard include */
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#include <commtech.h>
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#include <assert.h>
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#define SHARED_SPACE_SIZE (16 * BUF_SIZE)
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#define SHARED_SPACE_VOIDPTR (SHARED_SPACE_SIZE / sizeof(void *))
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#ifndef BUF_SIZE
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#define BUF_SIZE CACHE_LINE_SIZE
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#endif
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#define DANGER (2 * BUF_SIZE / sizeof(void *))
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#define GOOD (6 * BUF_SIZE / sizeof(void *))
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#define ADJUST_FREQ 64
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struct channel
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{
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void * volatile *shared_space;
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int head __attribute__ ((aligned (CACHE_LINE_SIZE)));
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int tail __attribute__ ((aligned (CACHE_LINE_SIZE)));
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};
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__BEGIN_DECLS
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extern int adjust_slip(struct channel *channel);
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static inline void send(struct channel *channel, void **addr)
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{
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static __thread int nb_iter = 0;
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assert(addr != NULL);
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if (nb_iter == ADJUST_FREQ)
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{
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adjust_slip(channel);
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nb_iter = 0;
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}
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while (1)
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{
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if (channel->shared_space[channel->head] != NULL)
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continue;
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channel->shared_space[channel->head] = addr;
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channel->head = (channel->head + 1) % SHARED_SPACE_VOIDPTR;
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break;
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}
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}
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__END_DECLS
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#endif
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