Every step in a series of steps generates precisely one offspring step. The steps are organized sequentially to form a configuration that looks like a chain. The original step generates a subsequent step, which in turn has the ability to generate additional subsequent steps.
Example:
Let's consider an example to demonstrate the sequence of operations in the C programming language:
#include <stdio.h>
#include <unistd.h>
int main() {
printf("Parent process (PID: %d)\n", getpid());
for (int i = 0; i < 2; ++i) {
if (fork() == 0) {
printf("Child process (PID: %d) with parent (PPID: %d)\n", getpid(), getppid());
break;
}
}
return 0;
}
Output:
Parent process (PID: [value])
Child process (PID: [value]) with parent (PPID: [value])
Explanation:
In this instance, the main process generates two subordinate processes sequentially. Each subordinate process displays its unique Process ID (PID) along with the PID of its parent process (PPID).
Fan of Processes:
A solitary process acting as a parent in a group of processes initiates numerous child processes simultaneously. In terms of parent-child dynamics, the child processes may not always be interconnected. The parent establishes a fan-out arrangement following multiple forks.
Example:
Let's consider an example to demonstrate the concept of process fan in the C programming language:
#include <stdio.h>
#include <unistd.h>
int main() {
printf("Parent process (PID: %d)\n", getpid());
for (int i = 0; i < 2; ++i) {
if (fork() == 0) {
printf("Child process (PID: %d) with parent (PPID: %d)\n", getpid(), getppid());
return 0;
}
}
return 0;
}
Output:
Parent process (PID: [value])
Child process (PID: [value]) with parent (PPID: [value])
Explanation:
In this instance, the main process spawns two child processes concurrently. Each child process displays the PID of both its parent and itself.
Key Points:
There are various crucial aspects of the Chain of Processes and Fan of Processes. Here are some primary key elements of these procedures:
Chain of Operations:
- It involves direct parent-child relationships in a linear manner.
- Each process generates a single child process exclusively.
Fan of Processes:
- Multiple offspring processes are spawned concurrently.
- Regarding parent-child connections, each child process functions autonomously from the others.
Conclusion:
In summary, both chain and fan configurations serve their purposes, and the selection relies on the particular needs of the software you are developing.