os_labs/lab11/vector-global-order.c

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2020-06-11 15:16:58 +10:00
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mythreads.h"
#include "main-header.h"
#include "vector-header.h"
void vector_add(vector_t *v_dst, vector_t *v_src) {
if (v_dst < v_src) {
Pthread_mutex_lock(&v_dst->lock);
Pthread_mutex_lock(&v_src->lock);
} else if (v_dst > v_src) {
Pthread_mutex_lock(&v_src->lock);
Pthread_mutex_lock(&v_dst->lock);
} else {
// special case: src and dst are the same
Pthread_mutex_lock(&v_src->lock);
}
int i;
for (i = 0; i < VECTOR_SIZE; i++) {
v_dst->values[i] = v_dst->values[i] + v_src->values[i];
}
Pthread_mutex_unlock(&v_src->lock);
if (v_dst != v_src)
Pthread_mutex_unlock(&v_dst->lock);
}
void fini() {}
#include "main-common.c"