linux's fork and system resources
Posted
by
Dmitry Bespalov
on Stack Overflow
See other posts from Stack Overflow
or by Dmitry Bespalov
Published on 2012-06-24T21:12:47Z
Indexed on
2012/06/24
21:15 UTC
Read the original article
Hit count: 215
Suppose I have following code in linux:
int main()
{
FILE* f = fopen("file.txt", "w");
fork();
fwrite("A", 1, 1, f);
fclose(f);
return 0;
}
What I know about fork
from documentation, is that it makes the copy of current process. It copies state of the memory as well, so *f should be equal in both instances. But what happens with system resources, such as a file handle? In this example I open the file with write intentions, so only one instance can write into file, right? Which of the instances will actually write into file? Who should care further about the file handle, and call fclose() ?
© Stack Overflow or respective owner