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* rts: tag `stgStrndup` as `STG_MALLOC`Nicolas Trangez2022-11-021-1/+2
| | | | See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
* rts: add and use `STG_RETURNS_NONNULL`Nicolas Trangez2022-11-021-2/+10
| | | | | See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-returns_005fnonnull-function-attribute See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
* rts: use `alloc_size` attributeNicolas Trangez2022-11-021-3/+6
| | | | | | | | This patch adds the `STG_ALLOC_SIZE1` and `STG_ALLOC_SIZE2` macros which allow to set the `alloc_size` attribute on functions, when available. See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
* rts: specify deallocator of allocating functionsNicolas Trangez2022-11-021-5/+12
| | | | | | | | | | | | | This patch adds a new `STG_MALLOC1` macro (and its counterpart `STG_MALLOC2` for completeness) which allows to specify the deallocation function to be used with allocations of allocating functions, and applies it to `stg*allocBytes`. It also fixes a case where `free` was used to free up an `stgMallocBytes` allocation, found by the above change. See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-malloc-function-attribute See: https://gitlab.haskell.org/ghc/ghc/-/issues/22381
* rts: introduce (and use) `STG_MALLOC`Nicolas Trangez2022-11-021-2/+2
| | | | | Instead of using `GNUC3_ATTRIBUTE(__malloc__)`, provide a `STG_MALLOC` macro definition and use it instead.
* rts: Use nanosleep instead of usleepBen Gamari2020-02-111-0/+1
| | | | usleep was removed in POSIX.1-2008.
* Use segments for section layoutArtem Pyanykh2019-03-201-1/+1
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* Show -with-rtsopts options in runtime's --info (#15261)roland2018-08-211-1/+1
| | | | | | | | | | | | | | | | | | Add an additional line to the output of +RTS --info. It shows the value of the flag -with-rtsopts provided at compile/link time. Test Plan: make test TESTS="T15261a T15261b" Reviewers: hvr, erikd, dfeuer, thomie, austin, bgamari, simonmar, osa1, monoidal Reviewed By: osa1, monoidal Subscribers: osa1, rwbarton, carter GHC Trac Issues: #15261 Differential Revision: https://phabricator.haskell.org/D5053
* Fix unwinding of C -> Haskell FFI calls with -threaded (2nd try)Bartosz Nitka2018-05-171-0/+3
| | | | | | | | | | | | | | | | | Summary: See the new note. This should fix cb5c2fe875965b7aedbc189012803fc62e48fb3f enough to unbreak Windows and OS X builds. Test Plan: manual testing with patched gdb Reviewers: bgamari, simonmar, erikd Reviewed By: bgamari Subscribers: rwbarton, thomie, carter Differential Revision: https://phabricator.haskell.org/D4694
* Revert "Fix unwinding of C -> Haskell FFI calls with -threaded"Bartosz Nitka2018-05-121-3/+0
| | | | | | This reverts commit cb5c2fe875965b7aedbc189012803fc62e48fb3f. It appears to have broken OSX and Windows builds.
* Fix unwinding of C -> Haskell FFI calls with -threadedBartosz Nitka2018-05-111-0/+3
| | | | | | | | | | | | | See the new note. Test Plan: manual testing with patched gdb Reviewers: bgamari, simonmar, erikd Subscribers: rwbarton, thomie, carter Differential Revision: https://phabricator.haskell.org/D4666
* Prefer #if defined to #ifdefBen Gamari2017-04-281-1/+1
| | | | Our new CPP linter enforces this.
* 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
* Report heap overflow in the same way as stack overflowSimon Marlow2017-04-021-2/+0
| | | | | | | | | | | | | | | | | | | | | | | Now that we throw an exception for heap overflow, we should only print the heap overflow message in the main thread when the HeapOverflow exception is caught, rather than as a side effect in the GC. Stack overflows were already done this way, I just made heap overflow consistent with stack overflow, and did some related cleanup. Fixes broken T2592(profasm) which was reporting the heap overflow message twice (you would only notice when building with profiling libs enabled). Test Plan: validate Reviewers: bgamari, niteria, austin, DemiMarie, hvr, erikd Reviewed By: bgamari Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D3394
* 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
* RtsUtils: Use `size_t` instead of `int` where appropriateErik de Castro Lopo2016-05-121-3/+3
| | | | | | | | | | | | | | | | | | | Functions like `stgMallocBytes` take a size parameter which was of type `int`, but is commonly used as `stgMallocBytes (sizeof (...))`. This is problematic because the `sizeof` operator returns `size_t` so that on 64 bit systems, in this common use case the `size_t` parameter would be truncated to 32 bits when passed to `stgMallocBytes` where it was cast back to `size_t`. Test Plan: Validate on Linux, OS X and Windows Reviewers: austin, hvr, bgamari, simonmar, hsyl20 Reviewed By: hvr, bgamari, simonmar, hsyl20 Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2201
* rts: Don't use strndupBen Gamari2016-04-181-0/+2
| | | | | | | | Reviewers: austin Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2125
* 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>
* Expose genericRaise; fixes signals004(dyn) no OS X 32Ian Lynagh2013-01-171-3/+0
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* Add a debug check for a non-empty FPU stack on x86 (see #4914)Simon Marlow2011-03-301-0/+2
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* rts_isProfiled should be a visible API (fixes T2615(dyn))Simon Marlow2010-09-151-2/+0
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* Fix the symbol visibility pragmasSimon Marlow2010-06-171-2/+2
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* Use StgWord64 instead of ullongIan Lynagh2010-04-211-1/+1
| | | | | | This patch also fixes ullong_format_string (renamed to showStgWord64) so that it works with values outside the 32bit range (trac #3979), and simplifies the without-commas case.
* Omit visibility pragmas on Windows (fixes warnings/validate failures)Simon Marlow2009-09-091-2/+2
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* Fix incorrectly hidden RTS symbolsSimon Marlow2009-08-291-3/+0
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* Declare RTS-private prototypes with __attribute__((visibility("hidden")))Simon Marlow2009-08-051-0/+4
| | | | | | | | | | 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.
* move termios prototypes into a public headerSimon Marlow2009-08-031-4/+0
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* RTS tidyup sweep, first phaseSimon Marlow2009-08-021-18/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Fix #2197 (properly this time)Simon Marlow2009-07-011-0/+2
| | | | | | | $ ./inplace/bin/ghc-stage2 --interactive GHCi, version 6.11.20090701: http://www.haskell.org/ghc/ :? for help ghc-stage2: GHCi cannot be used when compiled with -prof [1] 32473 exit 1 ./inplace/bin/ghc-stage2 --interactive
* Remove old GUM/GranSim codeSimon Marlow2009-06-021-4/+0
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* Document +RTS --info, and make it a Read'able Haskell valueIan Lynagh2007-08-161-0/+2
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* When debugging, have the allocator help us a bitIan Lynagh2006-12-111-0/+3
| | | | | | | We now check for freeing memory that isn't allocated, and overwrite memory we are about to free with 0xaa. It might be nice to also have a flag to control whether the memory actually gets free'd.
* replace stgMallocBytesRWX() with our own allocatorSimon Marlow2006-05-301-3/+0
| | | | | | | | | | | | | | | | | | | | See bug #738 Allocating executable memory is getting more difficult these days. In particular, the default SELinux policy on Fedora Core 5 disallows making the heap (i.e. malloc()'d memory) executable, although it does apparently allow mmap()'ing anonymous executable memory by default. Previously, stgMallocBytesRWX() used malloc() underneath, and then tried to make the page holding the memory executable. This was rather hacky and fails with Fedora Core 5. This patch adds a mini-allocator for executable memory, based on the block allocator. We grab page-sized blocks and make them executable, then allocate small objects from the page. There's a simple free function, that will free whole pages back to the system when they are empty.
* Reorganisation of the source treeSimon Marlow2006-04-071-0/+54
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.
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