多线程
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <pthread.h> 4 #include <errno.h> 5 #include <string.h> 6 #include <unistd.h> 7 8 //void test() 9 //{ 10 // pthread_exit(NULL); //终止线程的用法 11 //} 12 13 //void* func1(void* arg) 14 //{ 15 // printf("pthread1 start\n"); 16 // test(); 17 // sleep(1); 18 // printf("pthread1 end\n"); 19 // return NULL; 20 //} 21 22 void* func2(void* arg) 23 { 24 int* p = (int* )arg; 25 int i = *p; 26 free(p); 27 28 printf("pthread%d start\n",i); 29 while(1) 30 { 31 printf("pthread%d @@@@@@@@@\n",i); 32 sleep(1); 33 } 34 35 printf("pthread2 end%d \n",i); 36 } 37 38 void createthr() 39 { 40 pthread_t thrd1,thrd2; 41 42 // static int i1 = 1; 43 // static int i2 = 2; 44 45 int *i1 = malloc(sizeof(int)); 46 int *i2 = malloc(sizeof(int)); 47 *i1 =1; 48 *i2 =2; 49 50 if (pthread_create(&thrd1,NULL,func2,i1)!=0) 51 { 52 printf("error is %s\n",strerror(errno)); 53 } 54 if (pthread_create(&thrd2,NULL,func2,i2)!=0) 55 { 56 printf("error is %s\n",strerror(errno)); 57 } 58 59 60 return; 61 } 62 63 64 int main(void) 65 { 66 createthr(); 67 68 while(1) 69 { 70 sleep(1); 71 } 72 73 return EXIT_SUCCESS; 74 }
ps:
pthread_join(thrd1,NULL); //主线程挂起，等待thrd1退出 pthread_join(thrd2,NULL); printf("main end\n");
