Unable to preload libstackusage.dylib on MacOS
lkloh opened this issue · comments
I'm using MacOS Big Sur version 11.3.1. I tried the installation steps suggested:
- Prerequisites:
sudo apt install git cmake build-essential-- skipped as I havegitandcmakeinstalled,brew install build-essentialandsudo port install build-essentialdidn't turn up packages but I was still able to compile. - Download source code:
git clone https://github.com/d99kris/stackusage && cd stackusage - Generate Makefile and build:
mkdir -p build && cd build && cmake .. && make -s
Now this generated several files in the build directory:
CMakeCache.txt Makefile ex002 stackusage test004
CMakeFiles cmake_install.cmake ex004 test001
CTestTestfile.cmake ex001 libstackusage.dylib test002
When I ran:
./stackusage ls
it keeps giving me this error: error: unable to preload libstackusage.dylib.
Running sudo make install to install in system and then trying
./stackusage ls
persistently gave the same error: error: unable to preload libstackusage.dylib.
Is there something obvious I'm missing, or do you think this could be a bug?
Hi @lkloh - thanks for the very well-written issue description! 👍
I believe the issue you are seeing is due to a known limitation of stackusage on macOS. Basically it can only provide analysis on your own programs / locally built. You could try run stackusage on one of the example programs in the build directory, and it should work. Example:
cd build
./stackusage ./ex001
This limitation is due to macOS not allowing the type of code injection stackusage relies on, for - I think - system binaries and signed programs. It's briefly mentioned in the README.md https://github.com/d99kris/stackusage#supported-platforms but I should probably consider adding a note in the warning-message of stackusage itself (on macOS).
Hi @lkloh - thanks for the very well-written issue description! 👍
I believe the issue you are seeing is due to a known limitation of stackusage on macOS. Basically it can only provide analysis on your own programs / locally built. You could try run stackusage on one of the example programs in the
builddirectory, and it should work. Example:cd build ./stackusage ./ex001This limitation is due to macOS not allowing the type of code injection stackusage relies on, for - I think - system binaries and signed programs. It's briefly mentioned in the README.md https://github.com/d99kris/stackusage#supported-platforms but I should probably consider adding a note in the warning-message of stackusage itself (on macOS).
Thanks for the response! I was able to analyze the ex00X programs 👍
~/stackusage/build(master*) » ./stackusage ./ex001 laykuanloh@Lays-MacBook-Pro
Starting thread size=8192 usage=0
Starting thread size=12288 usage=4096
Starting thread size=16384 usage=8192
Starting thread size=24576 usage=16384
Starting thread size=40960 usage=32768
stackusage log at 2021-08-12 08:50:39 ----------------------------------------
pid id tid requested actual maxuse max% dur funcP name
52449 0 0 67104768 67104768 12448 0 0 0x0
52449 1 0 8192 8192 2336 28 0 0x1084c4e00
52449 2 0 12288 12288 6560 53 0 0x1084c4e00
52449 3 0 16384 16384 8464 51 0 0x1084c4e00
52449 4 0 24576 24576 16656 67 0 0x1084c4e00
52449 5 0 40960 40960 33040 80 0 0x1084c4e00
Yes, adding a warning message to stackusage on MacOS so people don't get confused would be great.
Another thing that could be helpful is to change the --help message's proposed test program to ./stackusage ./ex001 instead of ./stackusage ls. I was using the --help message to understand how to use the tool when I ran into the error.
Hi again, good suggestion. Now the --help message has been aligned with the README.md, and a warning message has been added when running stackusage and it fails to preload/inject its code.
Hi again, good suggestion. Now the
--helpmessage has been aligned with theREADME.md, and a warning message has been added when running stackusage and it fails to preload/inject its code.
thanks!