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

thread local vs. global system.raiseHook

Browse source
This commit is contained in:
Araq 2011-10-23 01:12:24 +02:00
commit 2b323c638c
4 changed files with 22 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

13
lib/system.nim
View file

@ -1447,11 +1447,20 @@ var
## set this variable to provide a procedure that should be called before
## each executed instruction. This should only be used by debuggers!
## Only code compiled with the ``debugger:on`` switch calls this hook.
raiseHook*: proc (e: ref E_Base): bool
globalRaiseHook*: proc (e: ref E_Base): bool
## with this hook you can influence exception handling on a global level.
## If not nil, every 'raise' statement ends up calling this hook. Ordinary
## application code should never set this hook! You better know what you
## do when setting this. If ``raiseHook`` returns false, the exception
## do when setting this. If ``globalRaiseHook`` returns false, the
## exception is caught and does not propagate further through the call
## stack.
localRaiseHook* {.threadvar.}: proc (e: ref E_Base): bool
## with this hook you can influence exception handling on a
## thread local level.
## If not nil, every 'raise' statement ends up calling this hook. Ordinary
## application code should never set this hook! You better know what you
## do when setting this. If ``localRaiseHook`` returns false, the exception
## is caught and does not propagate further through the call stack.
outOfMemHook*: proc

6
lib/system/excpt.nim
View file

@ -194,8 +194,10 @@ proc quitOrDebug() {.inline.} =
proc raiseException(e: ref E_Base, ename: CString) {.compilerRtl.} =
e.name = ename
if raiseHook != nil:
if not raiseHook(e): return
if localRaiseHook != nil:
if not localRaiseHook(e): return
if globalRaiseHook != nil:
if not globalRaiseHook(e): return
if excHandler != nil:
pushCurrentException(e)
c_longjmp(excHandler.context, 1)