jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

--exception:goto switch for deterministic exception handling (#12977)

Browse source 
This implements "deterministic" exception handling for Nim based on goto instead of setjmp. This means raising an exception is much cheaper than in C++'s table based implementations. Supports hard realtime systems. Default for --gc:arc and the C target because it's generally a good idea and arc is all about deterministic behavior.

Note: This implies that fatal runtime traps are not catchable anymore! This needs to be documented.
This commit is contained in:
Andreas Rumpf 2020-01-01 10:01:49 +01:00 • committed by GitHub
commit c3344862b0
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
23 changed files with 640 additions and 183 deletions
Download patch file Download diff file Expand all files Collapse all files

7
tests/destructor/tgotoexceptions3.nim Normal file
View file

@ -0,0 +1,7 @@
discard """
cmd: "nim c --gc:arc --exceptions:goto $file"
outputsub: "Error: unhandled exception: Problem [OSError]"
exitcode: "1"
"""
raise newException(OSError, "Problem")