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嗨!
我想從一個程序傳遞整個結構,並在另一個使用fifo讀取它。 我正在使用讀取和寫入功能。
我把我的結構放到這個函數中有問題。當我做到了,並試圖發送和接收我得到一個錯誤(核心轉儲)或我收回了一些垃圾。我不知道我的問題發生在哪裏(在收件人或發件人中)。我如何發送/接收我的結構,或者我的代碼中有什麼錯誤。這裏是我的代碼...
接收struct data
{
char* message;
int size;
vector <times> prog;
};
int if_fifo(char* name)
{
struct stat info;
int score = stat(name,&info);
if(S_ISFIFO(info.st_mode))
{
return 1;
}
else
{
return 0;
}
}
int fifo_in(char* name)
{
data msg;
int pip;
pip = open(name, O_RDONLY | O_NONBLOCK);
while(1)
{
int hr = read(pip,&msg,sizeof(msg));
if(hr != 0)
{
cout << "Message: " << msg.message << endl;
}
}
cout << "O.K." << endl;
return 0;
}
int main(int argc, char** argv) {
int c, status_in, status_out;
char* input;
char* output;
float del;
if(argc < 5)
{
cout << "Za malo podanych parametrow" << endl;
return 1;
}
else
{
while ((c = getopt(argc, argv, "iod:")) != -1)
{
switch (c)
{
case 'i':
input = argv[2];
status_in = if_fifo(input);
break;
case 'o':
output = argv[3];
status_out = if_fifo(output);
break;
case 'd':
del = atof(argv[4]);
break;
case '?':
printf("UKNOWN");
}
}
}
if(status_in == 1)
{
return fifo_in(input);
}
else
{
cout << "It isnt fifo!!" << endl;
}
return 0;
}
和發件人:
struct data
{
char* message;
int size;
vector <times> prog;
}msg;
int if_fifo(char* name)
{
struct stat info;
int score = stat(name,&info);
if(S_ISFIFO(info.st_mode))
{
return 1;
}
else
{
return 0;
}
}
int fifo_out(char* name)
{
msg.message = "To jest to!!";
msg.size = sizeof(msg.message);
int pip;
pip = open(name, O_WRONLY);
if( pip == -1)
{
perror("Error: open(): ");
return 1;
}
write(pip,&msg,sizeof(msg));
return 0;
}
int main(int argc, char** argv) {
int c, status_out;
char* output;
if(argc < 3)
{
cout << "Za malo podanych parametrow" << endl;
return 1;
}
else
{
while ((c = getopt(argc, argv, "o:")) != -1)
{
switch (c)
{
case 'o':
output = argv[2];
status_out = if_fifo(output);
break;
case '?':
printf("UKNOWN");
}
}
}
if(status_out == 1)
{
return fifo_out(output);
}
return 0;
}
這是太多代碼來查看。請參閱[幫助頁面](http://stackoverflow.com/help/mcve),獲取編寫一個好問題的提示。 – dg99 2015-02-11 18:13:14