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* Remove markSignalHandlersÖmer Sinan Ağacan2018-04-161-8/+0
| | | | | | | | | | | | It's no-op on all platforms Reviewers: bgamari, simonmar, erikd, dfeuer Reviewed By: dfeuer Subscribers: dfeuer, thomie, carter Differential Revision: https://phabricator.haskell.org/D4588
* cpp: Use #pragma once instead of #ifndef guardsBen Gamari2017-04-231-4/+1
| | | | | | | | | | | | | | This both says what we mean and silences a bunch of spurious CPP linting warnings. This pragma is supported by all CPP implementations which we support. Reviewers: austin, erikd, simonmar, hvr Reviewed By: simonmar Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D3482
* Use C99's boolBen Gamari2016-11-291-1/+1
| | | | | | | | | | | | Test Plan: Validate on lots of platforms Reviewers: erikd, simonmar, austin Reviewed By: erikd, simonmar Subscribers: michalt, thomie Differential Revision: https://phabricator.haskell.org/D2699
* Revert "rts: add Emacs 'Local Variables' to every .c file"Simon Marlow2014-09-291-8/+0
| | | | This reverts commit 39b5c1cbd8950755de400933cecca7b8deb4ffcd.
* rts: add Emacs 'Local Variables' to every .c fileAustin Seipp2014-07-281-0/+8
| | | | | | | | This will hopefully help ensure some basic consistency in the forward by overriding buffer variables. In particular, it sets the wrap length, the offset to 4, and turns off tabs. Signed-off-by: Austin Seipp <austin@well-typed.com>
* Fix the symbol visibility pragmasSimon Marlow2010-06-171-2/+2
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* Omit visibility pragmas on Windows (fixes warnings/validate failures)Simon Marlow2009-09-091-2/+2
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* Fix incorrectly hidden RTS symbolsSimon Marlow2009-08-291-17/+0
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* Declare RTS-private prototypes with __attribute__((visibility("hidden")))Simon Marlow2009-08-051-8/+12
| | | | | | | | | | This has no effect with static libraries, but when the RTS is in a shared library it does two things: - it prevents the function from being exposed by the shared library - internal calls to the function can use the faster non-PLT calls, because the function cannot be overriden at link time.
* RTS tidyup sweep, first phaseSimon Marlow2009-08-021-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The first phase of this tidyup is focussed on the header files, and in particular making sure we are exposinng publicly exactly what we need to, and no more. - Rts.h now includes everything that the RTS exposes publicly, rather than a random subset of it. - Most of the public header files have moved into subdirectories, and many of them have been renamed. But clients should not need to include any of the other headers directly, just #include the main public headers: Rts.h, HsFFI.h, RtsAPI.h. - All the headers needed for via-C compilation have moved into the stg subdirectory, which is self-contained. Most of the headers for the rest of the RTS APIs have moved into the rts subdirectory. - I left MachDeps.h where it is, because it is so widely used in Haskell code. - I left a deprecated stub for RtsFlags.h in place. The flag structures are now exposed by Rts.h. - Various internal APIs are no longer exposed by public header files. - Various bits of dead code and declarations have been removed - More gcc warnings are turned on, and the RTS code is more warning-clean. - More source files #include "PosixSource.h", and hence only use standard POSIX (1003.1c-1995) interfaces. There is a lot more tidying up still to do, this is just the first pass. I also intend to standardise the names for external RTS APIs (e.g use the rts_ prefix consistently), and declare the internal APIs as hidden for shared libraries.
* Remove old GUM/GranSim codeSimon Marlow2009-06-021-1/+1
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* FIX part of #2301, and #1619Simon Marlow2008-07-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 2301: Control-C now causes the new exception (AsyncException UserInterrupt) to be raised in the main thread. The signal handler is set up by GHC.TopHandler.runMainIO, and can be overriden in the usual way by installing a new signal handler. The advantage is that now all programs will get a chance to clean up on ^C. When UserInterrupt is caught by the topmost handler, we now exit the program via kill(getpid(),SIGINT), which tells the parent process that we exited as a result of ^C, so the parent can take appropriate action (it might want to exit too, for example). One subtlety is that we have to use a weak reference to the ThreadId for the main thread, so that the signal handler doesn't prevent the main thread from being subject to deadlock detection. 1619: we now ignore SIGPIPE by default. Although POSIX says that a SIGPIPE should terminate the process by default, I wonder if this decision was made because many C applications failed to check the exit code from write(). In Haskell a failed write due to a closed pipe will generate an exception anyway, so the main difference is that we now get a useful error message instead of silent program termination. See #1619 for more discussion.
* Reorganisation to fix problems related to the gct register variableSimon Marlow2008-04-161-1/+1
| | | | | | | | | - GCAux.c contains code not compiled with the gct register enabled, it is callable from outside the GC - marking functions are moved to their relevant subsystems, outside the GC - mark_root needs to save the gct register, as it is called from outside the GC
* Free more things that we allocate2006-12-16Ian Lynagh2006-12-151-0/+2
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* Reorganisation of the source treeSimon Marlow2006-04-071-0/+78
Most of the other users of the fptools build system have migrated to Cabal, and with the move to darcs we can now flatten the source tree without losing history, so here goes. The main change is that the ghc/ subdir is gone, and most of what it contained is now at the top level. The build system now makes no pretense at being multi-project, it is just the GHC build system. No doubt this will break many things, and there will be a period of instability while we fix the dependencies. A straightforward build should work, but I haven't yet fixed binary/source distributions. Changes to the Building Guide will follow, too.