linux 線程創建函數pthread_create的幾個傳參方式

最近在linux中用到了多線程的一些知識，網上找了一些有關pthread_create函數應用的例子，感覺收穫不少，在這裏貼出來以供方便學習之。

. [文件] test1.c ~ 719B     

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#include <pthread.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <string.h>   void *start_routine(void *arg);   int main(int argc, char **argv) {   pthread_t tid;   int code;   int i;     for (i = 0; i < 5; i++)   {     code = pthread_create(&tid, NULL, start_routine, (void *) i);       if (code != 0)     {       fprintf(stderr, "Create new thread failed: %s\n", strerror(code));       exit(1);     }       fprintf(stdout, "New thread created.\n");   }     pthread_exit((void *) 0); }   void *start_routine(void *arg) {   int id = (int) arg;     fprintf(stdout, "%s:%d:%s() running ...\n", __FILE__, __LINE__, __func__);   fprintf(stdout, "id = %d\n", id);     return ((void *) 0); }   // vim:tabstop=8

2. [文件] test2.c ~ 793B     

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#include <pthread.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <string.h>   #define THREADS_NUM 5   void *start_routine(void *arg);   int main(int argc, char **argv) {   pthread_t tid;   int id[THREADS_NUM];   int code;   int i;     for (i = 0; i < THREADS_NUM; i++)   {     id[i] = i;           code = pthread_create(&tid, NULL, start_routine, &id[i]);       if (code != 0)     {       fprintf(stderr, "Create new thread failed: %s\n", strerror(code));       exit(1);     }       fprintf(stdout, "New thread created.\n");   }       pthread_exit((void *) 0); }   void *start_routine(void *arg) {   int id = *(int *) arg;     fprintf(stdout, "%s:%d:%s() running ...\n", __FILE__, __LINE__, __func__);   fprintf(stdout, "id = %d\n", id);     return ((void *) 0); }   // vim:tabstop=8

3. [文件] test3.c ~ 714B     

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#include <pthread.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <string.h>   void *start_routine(void *arg);   int main(int argc, char **argv) {   pthread_t tid;   int code;   int i;     for (i = 0; i < 5; i++)   {     code = pthread_create(&tid, NULL, start_routine, &i);       if (code != 0)     {       fprintf(stderr, "Create new thread failed: %s\n", strerror(code));       exit(1);     }       fprintf(stdout, "New thread created.\n");   }     pthread_exit((void *) 0); }   void *start_routine(void *arg) {   int id = *(int *) arg;     fprintf(stdout, "%s:%d:%s() running ...\n", __FILE__, __LINE__, __func__);   fprintf(stdout, "id = %d\n", id);     return ((void *) 0); }   // vim:tabstop=8