Linux创建线程

1. #include"stdio.h"
2. #include"unistd.h"
3. #include"stdlib.h"
4. #include"pthread.h"
5. #include"semaphore.h"
6. #include"string.h"
7. void*thread_function(void*arg);
8. pthread_mutex_twork_mutex;
10. #defineWORK_SIZE1024
11. charwork_area[WORK_SIZE];
12. inttime_to_exit=0;
14. intmain()
15. {
16. intres;
17. pthread_ta_thread;
18. void*thread_result;
19. res=pthread_mutex_init(&work_mutex,NULL);
20. if(res!=0){
21. perror("Mutexinitializationfailed");
22. exit(EXIT_FAILURE);
23. }
24. res=pthread_create(&a_thread,NULL,thread_function,NULL);
25. if(res!=0){
26. perror("Threadcreationfailed!\n");
27. exit(EXIT_FAILURE);
28. }
30. pthread_mutex_lock(&work_mutex);
31. printf("Inputsometext.Enter'end'tofinish\n");
32. while(!time_to_exit){
33. fgets(work_area,WORK_SIZE,stdin);
34. pthread_mutex_unlock(&work_mutex);
35. while(1){
36. pthread_mutex_unlock(&work_mutex);
37. if(work_area[0]!='\0'){
38. pthread_mutex_unlock(&work_mutex);
39. sleep(1);
40. }
41. else{
42. break;
43. }
44. }
45. pthread_mutex_unlock(&work_mutex);
46. printf("\nWaitingforthresdtofinish...\n");
47. res=pthread_join(a_thread,&thread_result);
48. if(res!=0){
49. perror("Threadjoinfailed!\n");
50. exit(EXIT_FAILURE);
51. }
52. printf("Threadjoined!\n");
53. pthread_mutex_destroy(&work_mutex);
54. exit(EXIT_SUCCESS);
55. }
56. }
57. void*thread_function(void*arg)
58. {
59. sleep(1);
60. pthread_mutex_lock(&work_mutex);
61. while(strncmp("end",work_area,3)!=0){
62. printf("Youinput%dchatacters\n",strlen(work_area)-1);
63. work_area[0]='\0';
64. pthread_mutex_lock(&work_mutex);
65. sleep(1);
66. pthread_mutex_lock(&work_mutex);
67. while(work_area[0]=='\0'){
68. pthread_mutex_unlock(&work_mutex);
69. sleep(1);
70. pthread_mutex_lock(&work_mutex);
71. }
72. }
73. time_to_exit=1;
74. work_area[0]='\0';
75. pthread_mutex_unlock(&work_mutex);
76. pthread_exit(0);
77. }

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