?? communication.c.svn-base
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/* communication.c */#include <sys/types.h>#include <sys/ipc.h>#include <sys/msg.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <netinet/in.h>#include <arpa/inet.h>#include <unistd.h>#include "communication.h"static long id;static int c2s_id;static int s2c_id;int communication_init(){ id = (long)getpid(); if ((c2s_id = msgget(C2S_KEY, PERM | IPC_CREAT)) < 0) { perror("MSG Key"); exit(-1); } if ((s2c_id = msgget(S2C_KEY, PERM | IPC_CREAT)) < 0) { perror("MSG Key"); exit(-1); } return 0;}int send_msg(const char *msg){ int len; msg_data_t data_send; strcpy(data_send.text, msg); data_send.type = id; len = strlen(msg); msgsnd(c2s_id, &data_send, len + 1, 0); return 0;}int recv_msg(char * buf, int max){ msg_data_t data_recv; if (msgrcv(s2c_id, (void *)&data_recv, MAX_MSG_LEN, id , 0) == -1) { perror("msgrcv failed with error"); exit(-1); } strcpy(buf, data_recv.text); return 0;}?? 快捷鍵說明
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