Copyright | (c) The University of Glasgow 2013-2015 |
---|---|
License | see libraries/base/LICENSE |
Maintainer | [email protected] |
Stability | internal |
Portability | non-portable (GHC Extensions) |
Safe Haskell | None |
Language | Haskell2010 |
This is a module for efficient stack traces. This stack trace implementation is considered low overhead. Basic usage looks like this:
import GHC.ExecutionStack myFunction :: IO () myFunction = do putStrLn =<< showStackTrace
Your GHC must have been built with libdw
support for this to work.
user@host:~$ ghc --info | grep libdw ,("RTS expects libdw",YES)
Since: 4.9.0.0
Location information about an addresss from a backtrace.
Location | |
Fields
|
A location in the original program source.
SrcLoc | |
Fields
|
getStackTrace :: IO (Maybe [Location]) Source
Get a trace of the current execution stack state.
Returns Nothing
if stack trace support isn't available on host machine.
showStackTrace :: IO (Maybe String) Source
Get a string representation of the current execution stack state.
© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/8.0.1/docs/html/libraries/base-4.9.0.0/GHC-ExecutionStack.html