linux訊息序列（程序間通訊）

linux訊息序列（程序間通訊）

[cpp] 

#include  

#include  

#include  

#include  

#include  

#include  

#include  

#include  

www.2cto.com  

//需要自己定義的訊息佇列結構  

struct msgstuct  

long int msgtype;  

char strmsg[1024];  

int  

main ()  

struct msgstuct msg_data;  

int msgid;  

char buffer[1024];  

//建立乙個訊息佇列  

if ((msgid= msgget ((key_t) 2234, 0666 | ipc_creat)) == -1)  

www.2cto.com  

[cpp] 

#include  

#include  

#include  

#include  

#include  

#include  

#include  

#include  

//需要自己定義的訊息佇列結構  

struct msgstuct  

long int msgtype;  

char strmsg[1024];  

int  

main ()  

{    www.2cto.com  

int msgid;  

struct msgstuct msg_data;  

//接收訊息優先順序  

long int msgpriority = 0;//從佇列中取第乙個  

//建立乙個訊息佇列  

if ((msgid= msgget ((key_t) 2234, 0666 | ipc_creat)) == -1)//類似open()建立乙個檔案返回它的檔案描述符，這裡是訊息序列  

perror ("msgget failed with error");  

exit (exit_failure);  

while (1)  

//接收訊息  

if (msgrcv (msgid, (void *) &msg_data, 1024,  

msgpriority, 0) == -1)  

perror ("msgrcv failed with error");  

exit (exit_failure);  

printf ("received message: %s", msg_data.strmsg);  

if (strncmp (msg_data.strmsg, "end", 3) == 0)  

{    www.2cto.com  

break;  

//刪除訊息佇列  

if (msgctl (msgid, ipc_rmid, 0) == -1)  

fprintf (stderr, "delete messagequeue error\n");  

exit (exit_failure);  

exit (exit_success);  

第乙個是send.c,第二個是recieve.c

linux 訊息序列（程序間通訊）

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