pthread_struct

本文展示了一个使用C语言进行多线程编程的例子。通过创建一个新的线程来处理结构体成员变量并打印其内容,该例子说明了如何传递参数到线程函数中。

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  1. #include <stdio.h>  
  2.   
  3. #include <pthread.h>  
  4.   
  5. #include <unistd.h>  
  6.   
  7. #include <stdlib.h>  
  8.   
  9.   
  10.   
  11. struct menber  
  12.   
  13. {  
  14.   
  15.     int a;  
  16.   
  17.     char *s;  
  18.   
  19. };  
  20.   
  21.   
  22.   
  23. void *create(void *arg)  
  24.   
  25. {  
  26.   
  27.     struct menber *temp;  
  28.   
  29.     temp=(struct menber *)arg;  
  30.   
  31.     printf("menber->a = %d  \n",temp->a);  
  32.   
  33.     printf("menber->s = %s  \n",temp->s);  
  34.   
  35.     return (void *)0;  
  36.   
  37. }  
  38.   
  39.   
  40.   
  41. int main(int argc,char *argv[])  
  42.   
  43. {  
  44.   
  45.     pthread_t tidp;  
  46.   
  47.     int error;  
  48.   
  49.     struct menber *b;  
  50.   
  51.     b=(struct menber *)malloc( sizeof(struct menber) );  
  52.   
  53.     b->a = 4;  
  54.   
  55.     b->s = "zieckey";  
  56.   
  57.   
  58.   
  59.     error = pthread_create(&tidp, NULL, create, (void *)b);  
  60.   
  61.   
  62.   
  63.     if( error )  
  64.   
  65.     {  
  66.   
  67.         printf("phread is not created...\n");  
  68.   
  69.         return -1;  
  70.   
  71.     }  
  72.   
  73.     sleep(1);  
  74.   
  75.     printf("pthread is created...\n");  
  76.   
  77.     return 0;  
  78.   
  79. }  
#include <stdio.h> #include <pthread.h> #include <errno.h> #include <signal.h> #include <unistd.h> #include <sys/shm.h> #include <sys/sem.h> #include <sys/ipc.h> #include "data_global.h" extern pthread_cond_t cond_sqlite; extern pthread_cond_t cond_analysis; extern pthread_cond_t cond_client_send; extern pthread_cond_t cond_uart_cmd; extern pthread_cond_t cond_client_request; extern pthread_cond_t cond_infrared; extern pthread_cond_t cond_buzzer; extern pthread_cond_t cond_led; extern pthread_cond_t cond_camera; extern pthread_cond_t cond_sms; extern pthread_cond_t cond_refresh; extern pthread_cond_t cond_refresh_updata; extern pthread_mutex_t mutex_slinklist; extern pthread_mutex_t mutex_sqlite; extern pthread_mutex_t mutex_analysis; extern pthread_mutex_t mutex_client_send; extern pthread_mutex_t mutex_client_receive; extern pthread_mutex_t mutex_uart_cmd; extern pthread_mutex_t mutex_client_request; extern pthread_mutex_t mutex_infrared; extern pthread_mutex_t mutex_buzzer; extern pthread_mutex_t mutex_led; extern pthread_mutex_t mutex_camera; extern pthread_mutex_t mutex_sms; extern pthread_mutex_t mutex_refresh; extern pthread_mutex_t mutex_refresh_updata; extern pthread_mutex_t mutex_global; extern pthread_mutex_t mutex_linklist; extern int dev_infrared_fd; extern int dev_buzzer_fd; extern int dev_led_fd; extern int dev_camera_fd; extern int dev_sms_fd; extern int dev_uart_fd; extern int msgid; extern int shmid; extern int semid; extern void Create_table (); extern struct env_info_clien_addr all_info_RT; pthread_t id_sqlite, id_analysis, id_transfer, id_client_send, id_client_receive, id_uart_cmd, id_client_request, id_infrared, id_buzzer, id_led, id_camera, id_sms, id_refresh; void ReleaseResource (int signo) { pthread_mutex_destroy (&mutex_linklist); pthread_mutex_destroy (&mutex_global); pthread_mutex_destroy (&mutex_refresh_updata); pthread_mutex_destroy (&mutex_refresh); pthread_mutex_destroy (&mutex_sms); pthread_mutex_destroy (&mutex_camera); pthread_mutex_destroy (&mutex_led); pthread_mutex_destroy (&mutex_buzzer); pthread_mutex_destroy (&mutex_infrared); pthread_mutex_destroy (&mutex_client_request); pthread_mutex_destroy (&mutex_uart_cmd); pthread_mutex_destroy (&mutex_analysis); pthread_mutex_destroy (&mutex_client_send); pthread_mutex_destroy (&mutex_client_receive); pthread_mutex_destroy (&mutex_sqlite); pthread_mutex_destroy (&mutex_slinklist); pthread_cond_destroy (&cond_client_send); pthread_cond_destroy (&cond_refresh_updata); pthread_cond_destroy (&cond_refresh); pthread_cond_destroy (&cond_sms); pthread_cond_destroy (&cond_camera); pthread_cond_destroy (&cond_led); pthread_cond_destroy (&cond_buzzer); pthread_cond_destroy (&cond_infrared); pthread_cond_destroy (&cond_client_request); pthread_cond_destroy (&cond_uart_cmd); pthread_cond_destroy (&cond_analysis); pthread_cond_destroy (&cond_sqlite); msgctl (msgid, IPC_RMID, NULL); shmctl (shmid, IPC_RMID, NULL); pthread_cancel (id_refresh); pthread_cancel (id_sms); pthread_cancel (id_camera); pthread_cancel (id_led); pthread_cancel (id_buzzer); pthread_cancel (id_infrared); pthread_cancel (id_client_request); pthread_cancel (id_uart_cmd); pthread_cancel (id_transfer); pthread_cancel (id_analysis); pthread_cancel (id_client_send); pthread_cancel (id_client_receive); pthread_cancel (id_sqlite); close (dev_camera_fd); close (dev_led_fd); close (dev_buzzer_fd); close (dev_infrared_fd); close (dev_sms_fd); close (dev_uart_fd); printf ("All quit\n"); exit(0); } void setLimit (int sto_no, float temMAX, float temMIN, float humMAX, float humMIN, float illMAX, float illMIN) { if (sto_no >= 0 && (sto_no <=STORAGE_NUM - 1)) { all_info_RT.storage_no[sto_no].temperatureMAX = temMAX; all_info_RT.storage_no[sto_no].temperatureMIN = temMIN; all_info_RT.storage_no[sto_no].humidityMAX = humMAX; all_info_RT.storage_no[sto_no].humidityMIN = humMIN; all_info_RT.storage_no[sto_no].illuminationMAX = illMAX; all_info_RT.storage_no[sto_no].illuminationMIN = illMIN; } } int main(int argc, char **argv) { #if 1 / Create_table (); // setLimit (1, 50, 5, 50, 10, 500, 10); setLimit (2, 50, 5, 50, 10, 500, 10); pthread_mutex_init (&mutex_slinklist, NULL);// pthread_mutex_init (&mutex_sqlite, NULL); pthread_mutex_init (&mutex_analysis, NULL); pthread_mutex_init (&mutex_uart_cmd, NULL); pthread_mutex_init (&mutex_client_request, NULL); pthread_mutex_init (&mutex_infrared, NULL); pthread_mutex_init (&mutex_buzzer, NULL); pthread_mutex_init (&mutex_led, NULL); pthread_mutex_init (&mutex_camera, NULL); pthread_mutex_init (&mutex_sms, NULL); pthread_mutex_init (&mutex_refresh, NULL); pthread_mutex_init (&mutex_refresh_updata, NULL); pthread_mutex_init (&mutex_global, NULL); pthread_mutex_init (&mutex_linklist, NULL); pthread_mutex_init (&mutex_client_send, NULL); pthread_cond_init (&cond_client_send, NULL); pthread_cond_init (&cond_sqlite, NULL); pthread_cond_init (&cond_analysis, NULL); pthread_cond_init (&cond_uart_cmd, NULL); pthread_cond_init (&cond_client_request, NULL); pthread_cond_init (&cond_infrared, NULL); pthread_cond_init (&cond_buzzer, NULL); pthread_cond_init (&cond_led, NULL); pthread_cond_init (&cond_camera, NULL); pthread_cond_init (&cond_sms, NULL); pthread_cond_init (&cond_refresh, NULL); pthread_cond_init (&cond_refresh_updata, NULL); //signal (SIGINT, ReleaseResource); // pthread_create (&id_sqlite, 0, pthread_sqlite, NULL); sleep (1); pthread_create (&id_analysis, 0, pthread_analysis, NULL); pthread_create (&id_client_send, 0, pthread_client_send, NULL); pthread_create (&id_transfer, 0, pthread_transfer, NULL); sleep (1); pthread_create (&id_uart_cmd, 0, pthread_uart_cmd, NULL); pthread_create (&id_client_request, 0, pthread_client_request, NULL); pthread_create (&id_infrared, 0, pthread_infrared, NULL); pthread_create (&id_buzzer, 0, pthread_buzzer, NULL); pthread_create (&id_led, 0, pthread_led, NULL); pthread_create (&id_camera, 0, pthread_camera, NULL); pthread_create (&id_sms, 0, pthread_sms, NULL); pthread_create (&id_refresh, 0, pthread_refresh, NULL); // pthread_join (id_sqlite, NULL); pthread_join (id_client_send, NULL); printf ("g1\n"); pthread_join (id_analysis, NULL); printf ("g2\n"); pthread_join (id_transfer, NULL); printf ("g3\n"); pthread_join (id_uart_cmd, NULL); printf ("g4\n"); pthread_join (id_client_request, NULL); printf ("g5\n"); pthread_join (id_infrared, NULL); printf ("g6\n"); pthread_join (id_buzzer, NULL); printf ("g7\n"); pthread_join (id_led, NULL); printf ("g8\n"); pthread_join (id_camera, NULL); printf ("g9\n"); pthread_join (id_sms, NULL); printf ("g10\n"); pthread_join (id_refresh, NULL); printf ("g11\n"); return 0; }
最新发布
07-26
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