Mercurial > hg > Applications > Grep
diff parallel_processing/chapter3/ppb_first_thread/ppb_first_thread.cc @ 22:508b47c8f4d8
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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/parallel_processing/chapter3/ppb_first_thread/ppb_first_thread.cc Tue Jan 07 14:30:28 2014 +0900 @@ -0,0 +1,47 @@ +#include <stdio.h> +#include <pthread.h> + +#define THREAD_NUM 2 +#define DATA_NUM 10 + +typedef struct _thread_arg { + int thread_no; + int *data; +} thread_arg_t; + +void * +thread_func(void *arg) +{ + thread_arg_t *targ = (thread_arg_t *)arg; + + for (int i = 0; i < DATA_NUM; i++) { + printf("thread%d : %d + 1 = %d\n", + targ->thread_no, targ->data[i], targ->data[i] + 1); + } + return 0; +} + +int +main() +{ + pthread_t handle[THREAD_NUM]; + thread_arg_t targ[THREAD_NUM]; + int data[DATA_NUM]; + int i; + + /* initialize */ + for (i = 0; i < DATA_NUM; i++) data[i] = i; + + /* spawn thread a number of THREAD_NUM */ + for (i = 0; i < THREAD_NUM; i++) { + targ[i].thread_no = i; + targ[i].data = data; + + /* spawn thread*/ + pthread_create(&handle[i], NULL, &thread_func, (void*)&targ[i]); + } + + /* wait for running all thread */ + for (i = 0; i < THREAD_NUM; i++) pthread_join(handle[i], NULL); + return 0; +}