57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <unistd.h>
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/* Non standard include */
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#include <commtech.h>
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#include <private_common.h>
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#include <specific_comm.h>
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__thread volatile void **shared_space;
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__thread volatile int cons_idx = 0;
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__thread volatile int prod_idx = 0;
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int init_thread_comm(struct thread_comm *comm)
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{
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if (posix_memalign((void *) &shared_space, CACHE_LINE_SIZE, SHARED_SPACE_SIZE))
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{
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fprintf(stderr, "Unable to allocate space for shared mem communication\n");
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return -1;
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}
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comm->shared_space = shared_space;
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comm->cons_idx = &cons_idx;
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comm->prod_idx = &prod_idx;
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return 0;
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}
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int end_thread_comm(void)
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{
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return 0;
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}
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void reception(void (*on_receive)(void *))
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{
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wait_initialization();
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/* printf("Activate the consumer...\n"); */
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while(cont)
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{
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int i;
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for (i = 0; i < nb_prod; i++)
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{
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int cons_idx;
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for(cons_idx = *tcomms[i].cons_idx; cons_idx != *tcomms[i].prod_idx; cons_idx = (cons_idx + 1) % SHARED_SPACE_VOIDPTR, *tcomms[i].cons_idx = cons_idx)
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{
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/*
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* The behaviour of this is not documented but we know
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* the values inside buf won't change during this affectation
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*/
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on_receive((void *) tcomms[i].shared_space[cons_idx]);
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}
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}
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}
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}
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