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* rts/Printer: Introduce a few more printing utilitiesÖmer Sinan Ağacan2019-03-051-0/+3
| | | | | These include printLargeAndPinnedObjects, printWeakLists, and printStaticObjects. These are generally useful things to have.
* Move printMutableList to Printer.c next to other printersÖmer Sinan Ağacan2018-05-301-0/+1
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* Prefer #if defined to #ifdefBen Gamari2017-04-281-1/+1
| | | | Our new CPP linter enforces this.
* cpp: Use #pragma once instead of #ifndef guardsBen Gamari2017-04-231-5/+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
* rts/Printer.h: fix constness of argument declarationSergei Trofimovich2016-08-061-1/+1
| | | | | | | | | | | | | | | | | | Noticed on today's build failure: rts/Printer.c:659:13: error: error: conflicting types for 'DEBUG_LoadSymbols' extern void DEBUG_LoadSymbols( const char *name ) ^~~~~~~~~~~~~~~~~ In file included from rts/Printer.c:17:0: error: rts/Printer.h:29:13: error: note: previous declaration of 'DEBUG_LoadSymbols' was here extern void DEBUG_LoadSymbols( char *name ); ^~~~~~~~~~~~~~~~~ Signed-off-by: Sergei Trofimovich <siarheit@google.com>
* Remove Printer.c:prettyPrintClosure()Ömer Sinan Ağacan2016-06-101-1/+0
| | | | | | | | | | | | | | It turns out this function was unused and broken for a long time (fixed with b0a7664). Removing it as it will probably get broken again in the future and it's unused. Reviewers: austin, erikd, simonmar, nomeata, bgamari Reviewed By: nomeata, bgamari Subscribers: Phyx, thomie, nomeata Differential Revision: https://phabricator.haskell.org/D2322
* rts: More const correct-ness fixesErik de Castro Lopo2016-05-181-8/+8
| | | | | | | | | | | | | | | | | | | | In addition to more const-correctness fixes this patch fixes an infelicity of the previous const-correctness patch (995cf0f356) which left `UNTAG_CLOSURE` taking a `const StgClosure` pointer parameter but returning a non-const pointer. Here we restore the original type signature of `UNTAG_CLOSURE` and add a new function `UNTAG_CONST_CLOSURE` which takes and returns a const `StgClosure` pointer and uses that wherever possible. Test Plan: Validate on Linux, OS X and Windows Reviewers: Phyx, hsyl20, bgamari, austin, simonmar, trofi Reviewed By: simonmar, trofi Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2231
* Maintain cost-centre stacks in the interpreterSimon Marlow2015-12-211-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Breakpoints become SCCs, so we have detailed call-stack info for interpreted code. Currently this only works when GHC is compiled with -prof, but D1562 (Remote GHCi) removes this constraint so that in the future call stacks will be available without building your own GHCi. How can you get a stack trace? * programmatically: GHC.Stack.currentCallStack * I've added an experimental :where command that shows the stack when stopped at a breakpoint * `error` attaches a call stack automatically, although since calls to `error` are often lifted out to the top level, this is less useful than it might be (ImplicitParams still works though). * Later we might attach call stacks to all exceptions Other related changes in this diff: * I reduced the number of places that get ticks attached for breakpoints. In particular there was a breakpoint around the whole declaration, which was often redundant because it bound no variables. This reduces clutter in the stack traces and speeds up compilation. * I tidied up some RealSrcSpan stuff in InteractiveUI, and made a few other small cleanups Test Plan: validate Reviewers: ezyang, bgamari, austin, hvr Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1595 GHC Trac Issues: #11047
* Revert "rts: add Emacs 'Local Variables' to every .c file"Simon Marlow2014-09-291-8/+0
| | | | This reverts commit 39b5c1cbd8950755de400933cecca7b8deb4ffcd.
* rts: detabify/dewhitespace Printer.hAustin Seipp2014-08-201-6/+6
| | | | Signed-off-by: Austin Seipp <austin@well-typed.com>
* 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>
* In rts/Printer.c, print exact UPDATE_FRAME typeArash Rouhani2014-01-151-0/+1
| | | | | | | | When printing an update frame in printClosure(), it will not print the unspecific UPDATE_FRAME, instead it prints BH_UPDATE_FRAME, NORMAL_UPDATE_FRAME or MARKED_UPDATE_FRAME. 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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* Unify event logging and debug tracing.Simon Marlow2009-08-291-0/+2
| | | | | | | | | | | | | | | | | | | - tracing facilities are now enabled with -DTRACING, and -DDEBUG additionally enables debug-tracing. -DEVENTLOG has been removed. - -debug now implies -eventlog - events can be printed to stderr instead of being sent to the binary .eventlog file by adding +RTS -v (which is implied by the +RTS -Dx options). - -Dx debug messages can be sent to the binary .eventlog file by adding +RTS -l. This should help debugging by reducing the impact of debug tracing on execution time. - Various debug messages that duplicated the information in events have been removed.
* 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.
* Common up two closure type -> string tablesSimon Marlow2009-08-031-4/+6
| | | | Also, use C99-style array initialisers
* RTS tidyup sweep, first phaseSimon Marlow2009-08-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Re-working of the breakpoint supportSimon Marlow2007-04-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the result of Bernie Pope's internship work at MSR Cambridge, with some subsequent improvements by me. The main plan was to (a) Reduce the overhead for breakpoints, so we could enable the feature by default without incurrent a significant penalty (b) Scatter more breakpoint sites throughout the code Currently we can set a breakpoint on almost any subexpression, and the overhead is around 1.5x slower than normal GHCi. I hope to be able to get this down further and/or allow breakpoints to be turned off. This patch also fixes up :print following the recent changes to constructor info tables. (most of the :print tests now pass) We now support single-stepping, which just enables all breakpoints. :step <expr> executes <expr> with single-stepping turned on :step single-steps from the current breakpoint The mechanism is quite different to the previous implementation. We share code with the HPC (haskell program coverage) implementation now. The coverage pass annotates source code with "tick" locations which are tracked by the coverage tool. In GHCi, each "tick" becomes a potential breakpoint location. Previously breakpoints were compiled into code that magically invoked a nested instance of GHCi. Now, a breakpoint causes the current thread to block and control is returned to GHCi. See the wiki page for more details and the current ToDo list: http://hackage.haskell.org/trac/ghc/wiki/NewGhciDebugger
* Reorganisation of the source treeSimon Marlow2006-04-071-0/+31
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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