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[ui] ThumbnailCache: reduce number of system calls

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mugulmd 2023-01-16 03:43:26 -08:00
parent a2e6a68811
commit 7abbf1bbf3
1 changed files with 14 additions and 7 deletions
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21
meshroom/ui/components/thumbnail.py
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@ -5,6 +5,7 @@ from PySide2.QtGui import QImageReader, QImageWriter
import os
from pathlib import Path
import stat
import hashlib
import time
import logging
@ -173,22 +174,28 @@ class ThumbnailCache(QObject):
# Scan thumbnail directory and gather all thumbnails to remove
toRemove = []
remaining = []
for entry in os.scandir(ThumbnailCache.thumbnailDir):
if not entry.is_file():
for f_name in os.listdir(ThumbnailCache.thumbnailDir):
pathname = os.path.join(ThumbnailCache.thumbnailDir, f_name)
# System call to get current item info
f_stat = os.stat(pathname, follow_symlinks=False)
# Check if this is a regular file
if not stat.S_ISREG(f_stat.st_mode):
continue
# Compute storage duration since last usage of thumbnail
lastUsage = os.path.getmtime(entry.path)
lastUsage = f_stat.st_mtime
storageTime = now - lastUsage
logging.debug(f'[ThumbnailCache] Thumbnail {entry.name} has been stored for {storageTime}s')
logging.debug(f'[ThumbnailCache] Thumbnail {f_name} has been stored for {storageTime}s')
if storageTime > ThumbnailCache.storageTimeLimit * 3600 * 24:
# Mark as removable if storage time exceeds limit
logging.debug(f'[ThumbnailCache] {entry.name} exceeded storage time limit')
toRemove.append(entry.path)
logging.debug(f'[ThumbnailCache] {f_name} exceeded storage time limit')
toRemove.append(pathname)
else:
# Store path and last usage time for potentially sorting and removing later
remaining.append((entry.path, lastUsage))
remaining.append((pathname, lastUsage))
# Remove all thumbnails marked as removable
for path in toRemove: