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why does
int main(...) {
fork();
printf("hello again\n");
exit(0);
}
not create an infinte number of processess? I understood it as follows, the main process creates a childprocess, the child an other child, and so on.
542
When a process calls fork, it is deemed the parent process and the newly created process is its child. After the fork, both processes not only run the same program, but they resume execution as though both had called the system call.
It creates a copy of the current process, allowing tasks to read the same memory, without needing fine-grained synchronization. Unfortunately, you need to use it extremely carefully in large programs because fork in a multi-threaded program can easily cause deadlocks in the child process.
fork() creates a new process by duplicating the calling process. The new process is referred to as the child process. The calling process is referred to as the parent process. The child process and the parent process run in separate memory spaces.
The execution continues after the fork in both the parent and the child, it doesn't restart the program.
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