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comparison parallel_processing/ppb_first_thread/ppb_first_thread.cc @ 6:7b0b23f3538d

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first pthread programming
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Thu, 02 Jan 2014 16:57:28 +0900
parents 4b742b1fedb8
children edf4445da580
comparison
equal deleted inserted replaced
5:4b742b1fedb8 6:7b0b23f3538d
1 #include <stdio.h>
2 #include <pthread.h>
3
4 #define THREAD_NUM 2
5 #define DATA_NUM 10
6
7 typedef struct _thread_arg {
8 int thread_no;
9 int *data;
10 } thread_arg_t;
11
12 void *
13 thread_func(void *arg)
14 {
15 thread_arg_t *targ = (thread_arg_t *)arg;
16
17 for (int i = 0; i < DATA_NUM; i++) {
18 printf("thread%d : %d + 1 = %d\n",
19 targ->thread_no, targ->data[i], targ->data[i] + 1);
20 }
21 return 0;
22 }
23
24 int
25 main()
26 {
27 pthread_t handle[THREAD_NUM];
28 thread_arg_t targ[THREAD_NUM];
29 int data[DATA_NUM];
30 int i;
31
32 for (i = 0; i < DATA_NUM; i++) data[i] = i;
33
34 for (i = 0; i < THREAD_NUM; i++) {
35 targ[i].thread_no = i;
36 targ[i].data = data;
37
38 pthread_create(&handle[i], NULL, &thread_func, (void*)&targ[i]);
39 }
40
41 for (i = 0; i < THREAD_NUM; i++) pthread_join(handle[i], NULL);
42 return 0;
43 }