[feat] Support reader.get_working_set_size #40
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Summary of Changes
Hello @haochengxia, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces a new feature to calculate and retrieve the working set size for Reader objects. This functionality is exposed through a new get_working_set_size method, which is added to the ReaderProtocol and implemented in both SyntheticReader and TraceReader, leveraging a new C++ helper function for the latter.
Highlights
- Protocol Extension: I've extended the ReaderProtocol by adding a new abstract method get_working_set_size that returns a tuple of integers representing the working set size in objects and bytes.
- Synthetic Reader Implementation: For the SyntheticReader, I've implemented get_working_set_size to calculate the unique object IDs and their total byte size based on the current read position.
- Trace Reader Integration: The TraceReader now also supports get_working_set_size, which delegates the calculation to a newly exposed C++ helper function for efficiency.
- C++ Backend for Working Set Size: I've added a C++ function cal_working_set_size in src/export_reader.cpp to perform the working set size calculation and exposed it to Python using pybind11.
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Pull Request Overview
This PR adds support for calculating working set size across the reader hierarchy by implementing the get_working_set_size method. This feature enables users to analyze memory usage patterns by determining the number of unique objects and their total byte size in the working set.
- Exposes the existing C++
cal_working_set_sizefunction to Python - Implements
get_working_set_sizemethod in both trace reader and synthetic reader classes - Adds the method signature to the reader protocol interface
Reviewed Changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| src/export_reader.cpp | Exports C++ cal_working_set_size function to Python module |
| libcachesim/trace_reader.py | Implements get_working_set_size method using the exported C++ function |
| libcachesim/synthetic_reader.py | Implements get_working_set_size method with custom logic for synthetic data |
| libcachesim/protocols.py | Adds method signature to the ReaderProtocol interface |
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Code Review
This pull request adds support for reader.get_working_set_size() to calculate the working set size of the requests processed so far. The feature is added to the ReaderProtocol and implemented for both SyntheticReader and TraceReader.
My review has identified a correctness issue in the SyntheticReader implementation related to its lazy-loading mechanism, which could lead to incorrect results. I've also pointed out a minor inconsistency in type hinting in TraceReader for better code style and maintainability. Please see the detailed comments.
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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