http://d.puremagic.com/issues/show_bug.cgi?id=3462
Summary: Add a clean way to exit a process. Product: D Version: 2.035 Platform: All OS/Version: All Status: NEW Keywords: patch Severity: enhancement Priority: P2 Component: druntime AssignedTo: s...@invisibleduck.org ReportedBy: llu...@gmail.com --- Comment #0 from Leandro Lucarella <llu...@gmail.com> 2009-10-31 21:46:07 PDT --- Created an attachment (id=485) druntime patch (against svn r185) Maybe I'm missing something, but I can't find any "standard" way to exit a program cleanly. I can't just call C's exit() function because the stack doesn't get unwinded so scope guards and other finally blocks are not executed. This is bad if you want to do some cleanup. In my particular case, I create a lock file so other instances of a program exit immediately if the lock file is present, and I want to remove the lock file as soon as the program finishes. I want to be able to call some exit() function in any part of the program for simplicity though. I hacked a solution by adding all the program inside a try block, catching an special "Exit" exception with a status attribute. If that exception is catched, the program returns the exception's status code. I think this is an useful feature that deserves being in the standard library, and for that we need runtime support (that's why I added it to the druntime component instead of Phobos, even when Phobos should be hacked too. Attached are patches for druntime and phobos with this changes: druntime: * Add a ProcessExit class to core.exception module (inherits from Object since it's not a real exception and we don't want people catching it even when doing a catch (Throwable)). * Catch the new exception in tryExec() nested funtion from dmain2.d, even when rt_trapExceptions is false (again, because is not really an exception), making the status attribute the new program's exit code. phobos: * Add a new void std.process.exit(int status). All it does is "throw new ProcessExit(status);" to hide implementation details. I don't know if std.process is the better module, maybe it should go somewhere else. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------