IntelliSense gets stuck on Parsing workspace files, usually between 20% to 40%.

[alanpawlak]

Environment

• OS and Version: Windows 11 [10.0.22631.4317]
• VS Code Version: 1.94.0, 1.94.2 (tested both)
• C/C++ Extension Version: 1.21.6

Bug Summary and Steps to Reproduce

Bug Summary:

I created a simple project to try the Tracy profiler (https://github.com/wolfpld/tracy).

• Tracy added as a submodule
• Created a Makefile with one target and two source files: main.cpp and TracyProfiler.cpp
• The compiler is MSVC, and VSCode is launched through the Developer Command Prompt for VS 2022
• The Makefile Tools extension is used as the configuration provider, but disabling it makes no noticeable difference

Steps to Reproduce:

1. Start VSCode and open my workspace
2. IntelliSense begins parsing, and I can see it becoming active as I follow the paths
3. It gets stuck halfway through (or earlier; it's random) and becomes unresponsive

My project files (without tracy repo)
tracy-test.zip

Full logs
logs.zip

Expected Behavior:

IntelliSense should successfully finish parsing and continue working as expected.

Configuration and Logs

-------- Diagnostics - 10/10/2024, 9:54:32 PM
Version: 1.21.6
Current Configuration:
{
"name": "Win32",
"includePath": [
"c:/Developement/tracy-test/",
"c:/Developement/tracy-test/tracy/public/tracy/"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
],
"windowsSdkVersion": "10.0.19041.0",
"compilerPath": "cl.exe",
"cStandard": "c17",
"cppStandard": "c++17",
"compilerPathInCppPropertiesJson": "cl.exe",
"intelliSenseMode": "msvc-x64",
"intelliSenseModeIsExplicit": true,
"cStandardIsExplicit": false,
"cppStandardIsExplicit": false,
"mergeConfigurations": true,
"compilerPathIsExplicit": false,
"configurationProvider": "ms-vscode.makefile-tools",
"browse": {
"path": [
"c:/Developement/tracy-test/",
"c:/Developement/tracy-test/tracy/public/tracy/",
"${workspaceFolder}"
],
"limitSymbolsToIncludedHeaders": true
}
}
cpptools version (native): 1.21.6.0
Translation Unit Mappings:
[ C:\Developement\tracy-test\main.cpp - source TU]:
Translation Unit Configurations:
[ C:\Developement\tracy-test\main.cpp ]:
Process ID: 10752
Memory Usage: 167 MB
Compiler Path: C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\bin\Hostx64\x64\cl.exe
Includes:
C:\Developement\tracy-test
C:\Developement\tracy-test\tracy\public\tracy
System Includes:
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\include
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\atlmfc\include
C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\um
C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt
C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\shared
C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\winrt
C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\cppwinrt
Defines:
TRACY_ENABLE
_DEBUG
UNICODE
_UNICODE
Standard Version: ms_c++17
IntelliSense Mode: windows-msvc-x64
Total Memory Usage: 167 MB

------- Workspace parsing diagnostics -------
Number of files discovered (not excluded): 5293

[sean-mcmanus]

@alanpawlak The C:\Developement\tracy-test\tracy\profiler\src\profiler\TracyMicroArchitecture.cpp file is too large. Can you add "${workspaceFolder}/profiler/src/profiler to your C_Cpp.files.exclude setting? You could also exclude just that particular file, if you set C_Cpp.exclusionPolicy to checkFilesAndFolders.

[alanpawlak]

Thank you!

		"C_Cpp.exclusionPolicy": "checkFilesAndFolders",
		"C_Cpp.files.exclude": {
			"tracy/profiler/src/profiler/TracyMicroArchitecture.cpp": true,
			"**/.vscode": true,
			"**/.vs": true
		},

Worked and it seems to work fine now! Is this a known issue? What is the file limit for IntelliSense to process?

[bobbrow]

@sean-mcmanus, sqlite.c is bigger than this one and we are able to process it. Are you just saying that this file will slow down the parsing because it's big? I opened it by itself and the extension appeared to work. Could you clarify why it should be excluded?

[sean-mcmanus]

@bobbrow My reference to "too large" was a simplification -- it's an issue with too much of a particular type of modification to the database. Oleg said he was going to look at fixing it so that it would cancel/time out as it supposed to be doing. What do you mean by "extension appeared to work"? Are you saying you saw the database update? I was seeing it "stuck" on the database update.

[bobbrow]

@sean-mcmanus I may have been mistaken. I thought the database icon was gone, but I tried again and saw it get stuck. However, adding the following to cpp.hint and reloading the window got me a successful parse:

#define V static constexpr AsmVar
#define A static constexpr AsmVar const*
#define O static constexpr AsmOp

[sean-mcmanus]

Oh, cool, yeah, that's a better workaround than using the excludes.