envoi / reception de messages
'soir, je cherche a echanger une structure entre deux processus sous cygwin et lorsque je lance les programmes j'ai "Bad System Call". Voic mon code:
Emission
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
typedef struct{
int a;
int b;
int c;
}T_test;
int main()
{
int msqid;
int msgflg = IPC_CREAT | 0666;
key_t key;
T_test test;
key = 1234;
test.a = 1;
test.b = 2;
test.c = 3;
if((msqid = msgget(key, msgflg )) < 0)
{
perror("msgget");
exit(1);
}
if (msgsnd(msqid, &test, sizeof(T_test), IPC_NOWAIT) < 0)
{
perror("msgsnd");
exit(1);
}
return 0;
} |
Reception
Code:
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
typedef struct{
int a;
int b;
int c;
}T_test;
int main()
{
int msqid;
key_t key;
T_test test;
key = 1234;
if((msqid = msgget(key, 0666)) < 0)
{
perror("msgget");
exit(1);
}
if(msgrcv(msqid, &test, sizeof(T_test), 0, 0) < 0)
{
perror("msgrcv");
exit(1);
}
printf("\n%d, %d, %d\n", test.a, test.b, test.b);
return 0;
} |
Merci!!
