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CPU Scheduling Algorithms with user input with Gantt chart - #13896

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cclauss merged 7 commits into
TheAlgorithms:masterfrom
shashwat-126:master
Sep 5, 2026
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CPU Scheduling Algorithms with user input with Gantt chart#13896
cclauss merged 7 commits into
TheAlgorithms:masterfrom
shashwat-126:master

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@shashwat-126

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Describe your change:

CPU Algorithm with User input , Gantt chart display process working second by second, Calculations of Waiting Time, Turn around Time, Completion Time, Response time and also display the average .
Its user interface having user can choose different types of Scheduling Algorithms

  1. First Come First Serve (FCFS)
  2. Shortest Job First (Non Preemptive)
  3. Shortest Job First (Preemptive)
  4. Priority (Non Preemptive)
  5. Priority (Preemptive)
  6. Round Robin
  • Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
  • Documentation change?

Checklist:

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
  • If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".

@algorithms-keeperalgorithms-keeperBot added the awaiting reviews This PR is ready to be reviewed label Nov 11, 2025
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#15081 (comment)

@cclausscclauss closed this Sep 5, 2026
@cclausscclauss reopened this Sep 5, 2026
@algorithms-keeperalgorithms-keeperBot added require descriptive names This PR needs descriptive function and/or variable names require tests Tests [doctest/unittest/pytest] are required labels Sep 5, 2026

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t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["burst"])

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Please provide descriptive name for the parameter: x

done += 1

# shortest job first preemptive
def _simulate_sjf_p(self) -> Generator[tuple[int, str | None, list[str]]]:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function _simulate_sjf_p

t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["remaining"])

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Please provide descriptive name for the parameter: x

t += 1

# priority non preemptive
def _simulate_priority_np(self) -> Generator[tuple[int, str | None, list[str]]]:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function _simulate_priority_np

t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["priority"])

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Please provide descriptive name for the parameter: x

self.avg_label = ttk.Label(self.root, text="", font=("Arial", 11, "bold"))
self.avg_label.pack()

def add_process(self) -> None:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function add_process

except ValueError:
messagebox.showerror("Error", "Invalid input")

def delete_process(self) -> None:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function delete_process

self.processes = [p for p in self.processes if p["pid"] != pid]
self.tree.delete(sel[0])

def run_scheduling(self) -> None:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function run_scheduling

self.engine = SchedulerEngine(self.processes, algo, quantum)
threading.Thread(target=self.animate, daemon=True).start()

def animate(self) -> None:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function animate

time.sleep(0.3)
self.show_results()

def show_results(self) -> None:

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function show_results

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Click here to look at the relevant links ⬇️

🔗 Relevant Links

Repository:

Python:

Automated review generated by algorithms-keeper. If there's any problem regarding this review, please open an issue about it.

algorithms-keeper commands and options

algorithms-keeper actions can be triggered by commenting on this PR:

  • @algorithms-keeper review to trigger the checks for only added pull request files
  • @algorithms-keeper review-all to trigger the checks for all the pull request files, including the modified files. As we cannot post review comments on lines not part of the diff, this command will post all the messages in one comment.

NOTE: Commands are in beta and so this feature is restricted only to a member or owner of the organization.

t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["burst"])

Copy link
Copy Markdown

Choose a reason for hiding this comment

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Please provide descriptive name for the parameter: x

done += 1

# shortest job first preemptive
def _simulate_sjf_p(self) -> Generator[tuple[int, str | None, list[str]]]:

Copy link
Copy Markdown

Choose a reason for hiding this comment

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function _simulate_sjf_p

t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["remaining"])

Copy link
Copy Markdown

Choose a reason for hiding this comment

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Please provide descriptive name for the parameter: x

t += 1

# priority non preemptive
def _simulate_priority_np(self) -> Generator[tuple[int, str | None, list[str]]]:

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Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function _simulate_priority_np

t += 1
yield (t, None, [])
continue
process = min(ready, key=lambda x: x["priority"])

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Please provide descriptive name for the parameter: x

self.avg_label = ttk.Label(self.root, text="", font=("Arial", 11, "bold"))
self.avg_label.pack()

def add_process(self) -> None:

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function add_process

except ValueError:
messagebox.showerror("Error", "Invalid input")

def delete_process(self) -> None:

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function delete_process

self.processes = [p for p in self.processes if p["pid"] != pid]
self.tree.delete(sel[0])

def run_scheduling(self) -> None:

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Choose a reason for hiding this comment

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As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function run_scheduling

self.engine = SchedulerEngine(self.processes, algo, quantum)
threading.Thread(target=self.animate, daemon=True).start()

def animate(self) -> None:

Copy link
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Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function animate

time.sleep(0.3)
self.show_results()

def show_results(self) -> None:

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

As there is no test file in this pull request nor any test function or class in the file scheduling/cpuschedulingalgorithms.py, please provide doctest for the function show_results

@cclauss
cclauss enabled auto-merge (squash) September 5, 2026 08:41
@cclauss
cclauss merged commit 68e01f1 into TheAlgorithms:masterSep 5, 2026
5 checks passed
@algorithms-keeperalgorithms-keeperBot removed the awaiting reviews This PR is ready to be reviewed label Sep 5, 2026
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@shashwat-126@cclauss@mindaugl