Linux学习资料（超全版）包括VIM编辑器，gcc编辑器的使用方法和基本命令

#include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <pthread.h> #include <semaphore.h> void *thread_function(void *arg); pthread_mutex_t work_mutex; /*protects both work_area and time_to_exit*/ #define WORK_SIZE 1024 char work_area[WORK_SIZE]; int time_to_exit = 0; int main() { int res; pthread_t a_thread; void *thread_result; res = pthread_mutex_init(&work_mutex,NULL); //fast mode if(res != 0) { perror("Mutex initialization failed"); exit(EXIT_FAILURE); } res = pthread_create(&a_thread,NULL,thread_function,NULL); if(res != 0) { perror("Thread creation failed"); exit(EXIT_FAILURE); } pthread_mutex_lock(&work_mutex); printf("Input some text.Enter 'end' to finish\n"); while(!time_to_exit) { fgets(work_area,WORK_SIZE,stdin); pthread_mutex_unlock(&work_mutex); while(1) { pthread_mutex_lock(&work_mutex); if(work_area[0] != '\0') { pthread_mutex_unlock(&work_mutex); sleep(1); } else break; } } pthread_mutex_unlock(&work_mutex); printf("\nWaiting for thread to finish...\n"); res = pthread_join(a_thread,&thread_result); if(res != 0) { perror("Thread join failed"); exit(EXIT_FAILURE); } printf("Thread joined\n"); pthread_mutex_destroy(&work_mutex); exit(EXIT_SUCCESS); } void *thread_function(void *arg) { sleep(1); pthread_mutex_lock(&work_mutex); while(strncmp("end",work_area,3) != 0) { printf("You input %d characters\n",strlen(work_area) - 1); work_area[0] = '\0'; pthread_mutex_unlock(&work_mutex); sleep(1); pthread_mutex_lock(&work_mutex); } time_to_exit = 1; work_area[0] = '\0'; pthread_mutex_unlock(&work_mutex); pthread_exit(0); }