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Freeze/delayed input when editing c_cpp_properties.json #13591
Description
Environment
- Windows 10 Enterprise 22H2
- VS Code Version: 1.99.3
- C/C++ Extension Version: 1.25.3
Bug Summary and Steps to Reproduce
Bug Summary: When I edit c_cpp_properties.json it freezes, i.e. the next input is often delayed (5 to 15 seconds). This happens after every few keystrokes. Our codebase has around 8000 C/C++ files with 2 million lines of code.
Steps to reproduce:
See summary.
Expected behavior: No input delay when editing c_cpp_properties.json.
Configuration and Logs
{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**/Interfaces/**",
"${workspaceFolder}/**/BxPackaging/**",
"${workspaceFolder}/**/DeveloperTools/**",
"${workspaceFolder}/**/RuntimeExtensions/**",
"${workspaceFolder}/**/Biometrics/**",
"${workspaceFolder}/**/DataBinding/**",
"${workspaceFolder}/**/Utility/**"
],
"defines": [
"WIN32"
],
"windowsSdkVersion": "10.0.22621.0",
"compilerPath": "cl.exe",
"cStandard": "c11",
"cppStandard": "c++11",
"intelliSenseMode": "windows-msvc-x64",
"compilerArgs": [
"/std:c++11"
],
"browse": {
"path": [
"${workspaceFolder}/**/Interfaces/**",
"${workspaceFolder}/**/BxPackaging/**",
"${workspaceFolder}/**/DeveloperTools/**",
"${workspaceFolder}/**/RuntimeExtensions/**",
"${workspaceFolder}/**/Biometrics/**",
"${workspaceFolder}/**/DataBinding/**",
"${workspaceFolder}/**/Utility/**"
],
"limitSymbolsToIncludedHeaders": true
}
}
],
"version": 4
}Other Extensions
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bobbrow commentedon May 7, 2025
Hi CR82,
Thank you for reporting this. It looks like there is potentially a lot of synchronous I/O happening for the path validation when glob paths are used.
CR82 commentedon May 15, 2025
Thanks for the hint Bob Brown (@bobbrow) . I changed my paths to only GLOB at the end, i.e. "${workspaceFolder}/subdir1/subdir2/Interfaces/**", which resolves the issue for me.
bobbrow commentedon May 15, 2025
Thanks for the update CR82. That confirms my suspicions. I'm glad you were able to craft a workaround for this until we can fix it.