Bump to v0.3.3 #18
Bump to v0.3.3 #18
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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!
I am bumping the project version to 0.3.3. This update includes a minor simplification in an example cache plugin's free hook and an enhancement to the version synchronization script to prevent accidental downgrades of the pyproject.toml version.
Highlights
- Project Version Update: I've updated the libcachesim project version in pyproject.toml from 0.3.2 to 0.3.3.
- Cache Free Hook Simplification: In the s3fifo.py example, I've simplified the cache_free_hook function to a pass statement, indicating that the internal clearing of cache components is no longer explicitly needed at this level.
- Version Sync Script Improvement: I've added logic to scripts/sync_version.py to issue a warning and skip updating pyproject.toml if its current version is already newer than the version specified in version.txt, preventing potential version regressions.
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Code Review
This pull request bumps the project version to 0.3.3. The changes include updating the version in pyproject.toml, modifying a version synchronization script, and altering a cache cleanup hook in an example file. My review identifies two issues. First, in scripts/sync_version.py, the new version comparison logic is flawed and can fail for certain version strings; I've suggested a more robust approach. Second, in examples/plugin_cache/s3fifo.py, a resource cleanup hook has been effectively disabled, which could lead to memory leaks. I've provided a corrected implementation for the hook.
| @@ -60,6 +60,10 @@ def update_pyproject_toml(version): | |||
| if current_version == version: | |||
| print(f"Python binding version already up to date: {version}") | |||
| return False | |||
| # If the pyproject version is newer than version.txt, it is allowed. | |||
| if current_version > version: | |||
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Direct string comparison of version numbers is unreliable. For example, '0.3.10' > '0.3.2' evaluates to False. This can lead to incorrect behavior where a newer version in version.txt is ignored.
You should use a proper version parsing library like packaging to ensure correct comparison. You will need to add from packaging.version import parse as parse_version to the imports at the top of the file.
| if current_version > version: | |
| if parse_version(current_version) > parse_version(version): |
| def cache_free_hook(cache): | ||
| cache.small_fifo.clear() | ||
| cache.small_freq.clear() | ||
| cache.ghost_fifo.clear() | ||
| cache.ghost_freq.clear() | ||
| cache.main_fifo.clear() | ||
| cache.main_freq.clear() | ||
| pass |
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The previous implementation of cache_free_hook was buggy as it tried to access non-existent attributes. However, replacing it with pass completely removes the resource cleanup logic. This could lead to a memory leak if PluginCache instances are created and destroyed repeatedly in a long-running process, as the StandaloneS3FIFO object and its contents might not be garbage collected properly.
It would be safer to provide a correct implementation that clears the data structures held by the StandaloneS3FIFO instance.
def cache_free_hook(cache):
cache.small_set.clear()
cache.main_set.clear()
cache.ghost_set.clear()
cache.freq.clear()
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