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package Chapter3
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Tue, 07 Jan 2014 14:30:28 +0900
parents parallel_processing/ppb_first_thread/ppb_first_thread.cc@edf4445da580
children
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1 #include <stdio.h>
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2 #include <pthread.h>
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3
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4 #define THREAD_NUM 2
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5 #define DATA_NUM 10
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7 typedef struct _thread_arg {
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8 int thread_no;
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9 int *data;
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10 } thread_arg_t;
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12 void *
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13 thread_func(void *arg)
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14 {
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15 thread_arg_t *targ = (thread_arg_t *)arg;
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17 for (int i = 0; i < DATA_NUM; i++) {
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18 printf("thread%d : %d + 1 = %d\n",
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19 targ->thread_no, targ->data[i], targ->data[i] + 1);
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20 }
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21 return 0;
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22 }
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24 int
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25 main()
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26 {
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27 pthread_t handle[THREAD_NUM];
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28 thread_arg_t targ[THREAD_NUM];
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29 int data[DATA_NUM];
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30 int i;
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32 /* initialize */
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33 for (i = 0; i < DATA_NUM; i++) data[i] = i;
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35 /* spawn thread a number of THREAD_NUM */
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36 for (i = 0; i < THREAD_NUM; i++) {
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37 targ[i].thread_no = i;
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38 targ[i].data = data;
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40 /* spawn thread*/
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41 pthread_create(&handle[i], NULL, &thread_func, (void*)&targ[i]);
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42 }
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44 /* wait for running all thread */
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45 for (i = 0; i < THREAD_NUM; i++) pthread_join(handle[i], NULL);
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46 return 0;
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47 }