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* Some further tweaks to reduce fragmentation when allocating the nurserySimon Marlow2012-09-073-19/+37
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* some nats should be lnatsSimon Marlow2012-09-071-1/+1
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* When using -H with -M<size>, don't exceed the maximum heap sizeSimon Marlow2012-09-071-1/+5
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* memInventory(): tweak pretty-printingSimon Marlow2012-09-071-8/+8
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* small improvements to findPtr() and the closure printerSimon Marlow2012-08-311-1/+12
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* More CPP macros -> inline functionsIan Lynagh2012-08-253-7/+7
| | | | | | | | All the wibble seem to have cancelled out, and (non-debug) object sizes are back to where they started. I'm not 100% sure that the types are optimal, but at least now the functions have types and we can fix them if necessary.
* Make a function for get_itbl, rather than using a CPP macroIan Lynagh2012-08-254-8/+8
| | | | | | | | | | | | This has several advantages: * It can be called from gdb * There is more type information for the user, and type checking for the compiler * Less opportunity for things to go wrong, e.g. due to missing parentheses or repeated execution The sizes of the non-debug .o files hasn't changed (other than Inlines.o), so I'm pretty sure the compiled code is identical.
* Fix build with FreeBSD versions earlier than 9.0Gabor Pali2012-08-231-1/+5
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* OS X: use mmap() instead of malloc for allocating the bss (#7040)Simon Marlow2012-08-211-0/+5
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* tidy upSimon Marlow2012-08-212-11/+15
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* Reduce fragmentation when using +RTS -H (with or without a size)Simon Marlow2012-08-213-2/+45
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* improve debug outputSimon Marlow2012-08-211-1/+1
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* Fix a discrepancy between two calculations of which generation to collectSimon Marlow2012-08-213-59/+39
| | | | The calculation should be done in one place, of course.
* move startProfTimer() and stopProfTimer() to the public headersSimon Marlow2012-08-211-3/+0
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* add X86_64_GOTTPOFF relocation for errnoSimon Marlow2012-08-211-0/+25
| | | | Submitted by: Markus Pfeiffer <markus.pfeiffer@morphism.de> on cvs-ghc
* Retain ordering of finalizers during GC (#7160)Simon Marlow2012-08-211-5/+14
| | | | | | | | | | | This came up since the addition of C finalizers, since Haskell finalizers are already stored in an explicit list. C finalizers on the other hand get a WEAK object each, so in order to run them in the right order we have to make sure that list stays in the correct order. I hate adding new invariants, but this is the quickest way to fix the bug for now. A better way to fix it would be to have a single WEAK object with a list of finaliers attached to it, and a primop for adding finalizers to the list.
* Export startProfTimer and stopProfTimer symbols.Paolo Capriotti2012-08-202-5/+6
| | | | This fixes unresolved symbols error when dynamically linking base.
* Profiling: open .prof when -hr<cc> is specifiedTakano Akio2012-08-201-1/+2
| | | | | The code for retainer profiling is used with e.g. +RTS -hc -hrfoo -RTS, as well as with +RTS -hr -RTS.
* Merge branch 'master' of darcs.haskell.org:/srv/darcs//ghcIan Lynagh2012-08-131-4/+33
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| * Fix GHCi segfault during startup on linux-powerpc (#2972).Erik de Castro Lopo2012-08-131-4/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Slightly modified version of a patch from Ben Collins <bcollins@ubuntu.com> who did the final debugging that showed the segfault was being caused the memory protection mechanism. Due to the requirement of "jump islands" to handle 24 bit relative jump offsets, GHCi on PowerPC did not use mmap to load object files like the other architectures. Instead, it allocated memory using malloc and fread to load the object code. However there is a quirk in the GNU libc malloc implementation. For memory regions over certain size (dynamic and configurable), malloc will use mmap to obtain the required memory instead of sbrk and malloc's call to mmap sets the memory readable and writable, but not executable. That means when GHCi loads code into a memory region that was mmapped instead of malloc-ed and tries to execute it we get a segfault. This solution drops the malloc/fread object loading in favour of using mmap and then puts the jump island for each object code module at the end of the mmaped region for that object. This patch may also be a solution on other ELF based powerpc systems but does not work on darwin-powerpc.
* | Follow RTS symbol changes in Linker.cIan Lynagh2012-08-101-0/+2
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* | Merge branch 'master' of darcs.haskell.org:/srv/darcs//ghcIan Lynagh2012-08-101-1/+1
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| * Add cast to placate gcc 4.6 on linux-powerpc (#7113).Erik de Castro Lopo2012-08-091-1/+1
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* | Always define startProfTimer and stopProfTimerIan Lynagh2012-08-102-6/+4
|/ | | | This allows us to provide access to them in the base library.
* Fix a bug in the handling of recent_activitySimon Marlow2012-08-071-13/+22
| | | | | | | | The problem occurred when the idle GC was turned off with +RTS -I0. Then the scheduler would go into the state ACTIVITY_DONE_GC directly without doing a GC, and a subsequent GC would put it back to ACTIVITY_YES but without turning the timer back on. Instead if the GC finds the state is ACTIVITY_DONE_GC it should leave it there.
* Fix #7087 (integer overflow in getDelayTarget())Simon Marlow2012-07-311-3/+12
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* Fix compile on linux-powerpc64. (#7084).Erik de Castro Lopo2012-07-311-0/+2
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* typosGabor Greif2012-07-291-2/+2
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* Merge taskId and serialisableTaskIdMikolaj Konarski2012-07-253-21/+7
| | | | A companion ghc-events pachakge commit displays task ids in the same format.
* Fix build on OS XIan Lynagh2012-07-152-2/+6
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* Fix dtraceTaskCreateIan Lynagh2012-07-151-4/+6
| | | | The tid argument was missing
* Fix a CPP typoIan Lynagh2012-07-141-1/+1
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* Add a missing semi-colonIan Lynagh2012-07-141-1/+1
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* Add some casts to fix warningsIan Lynagh2012-07-142-4/+8
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* Fix typoIan Lynagh2012-07-141-1/+1
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* Merge remote branch 'mikolaj/dcoutts'Ian Lynagh2012-07-1411-40/+335
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| * Have a go at fixing the heap info DTrace build failue on OSXDuncan Coutts2012-07-102-27/+7
| | | | | | | | | | | | | | | | This patch will need to be tested by someone on OSX. Fixed a couple wrong names: CapsetID vs EventCapsetID gc__sync vs gc__global__sync
| * Emit the task-tracking eventsDuncan Coutts2012-07-103-1/+39
| | | | | | | | | | | | | | | | | | | | | | | | Based on initial patches by Mikolaj Konarski <mikolaj@well-typed.com> Use the new task tracing functions traceTaskCreate/Migrate/Delete. There are two key places. One is for worker tasks which have a relatively simple life cycle. Worker tasks are created and deleted by the RTS. The other case is bound tasks which are either created by the RTS, or appear as foreign C threads making calls into the RTS. For bound threads we do the tracing in rts_lock/unlock, which actually covers both threads coming in from outside, and also bound threads made by the RTS.
| * Define the task-tracking eventsDuncan Coutts2012-07-105-9/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | Based on initial patches by Mikolaj Konarski <mikolaj@well-typed.com> These new eventlog events are to let profiling tools keep track of all the OS threads that belong to an RTS capability at any moment in time. In the RTS, OS threads correspond to the Task abstraction, so that is what we track. There are events for tasks being created, migrated between capabilities and deleted. In particular the task creation event also records the kernel thread id which lets us match up the OS thread with data collected by others tools (in the initial use case with Linux's perf tool, but in principle also with DTrace).
| * New functions to get kernel thread Id + serialisable task IdDuncan Coutts2012-07-074-3/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On most platforms the userspace thread type (e.g. pthread_t) and kernel thread id are different. Normally we don't care about kernel thread Ids, but some system tools for tracing/profiling etc report kernel ids. For example Solaris and OSX's DTrace and Linux's perf tool report kernel thread ids. To be able to match these up with RTS's OSThread we need a way to get at the kernel thread, so we add a new function for to do just that (the implementation is system-dependent). Additionally, strictly speaking the OSThreadId type, used as task ids, is not a serialisable representation. On unix OSThreadId is a typedef for pthread_t, but pthread_t is not guaranteed to be a numeric type. Indeed on some systems pthread_t is a pointer and in principle it could be a structure type. So we add another new function to get a serialisable representation of an OSThreadId. This is only for use in log files. We use the function to serialise an id of a task, with the extra feature that it works in non-threaded builds by always returning 1.
* | Profiling: don't report IDLE time by defaultSimon Marlow2012-07-111-2/+4
| | | | | | | | | | You can get it with +RTS -P, as with the other systemish cost centres like "GC".
* | Parallelise clearNurseries() in the parallel GCSimon Marlow2012-07-104-15/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The clearNurseries() operation resets the free pointer in each nursery block to the start of the block, emptying the nursery. In the parallel GC this was done on the main GC thread, but that's bad because it accesses the bdescr of every nursery block, and move all those cache lines onto the CPU of the main GC thread. With large nurseries, this can be especially bad. So instead we want to clear each nursery in its local GC thread. Thanks to Andreas Voellmy <andreas.voellmy@gmail.com> for idenitfying the issue. After this change and the previous patch to make the last GC a major one, I see these results for nofib/parallel on 8 cores: blackscholes +0.0% +0.0% -3.7% -3.3% +0.3% coins +0.0% +0.0% -5.1% -5.0% +0.4% gray +0.0% +0.0% -4.5% -2.1% +0.8% mandel +0.0% -0.0% -7.6% -5.1% -2.3% matmult +0.0% +5.5% -2.8% -1.9% -5.8% minimax +0.0% +0.0% -10.6% -10.5% +0.0% nbody +0.0% -4.4% +0.0% 0.07 +0.0% parfib +0.0% +1.0% +0.5% +0.9% +0.0% partree +0.0% +0.0% -2.4% -2.5% +1.7% prsa +0.0% -0.2% +1.8% +4.2% +0.0% queens +0.0% -0.0% -1.8% -1.4% -4.8% ray +0.0% -0.6% -18.5% -17.8% +0.0% sumeuler +0.0% -0.0% -3.7% -3.7% +0.0% transclos +0.0% -0.0% -25.7% -26.6% +0.0% -------------------------------------------------------------------------------- Min +0.0% -4.4% -25.7% -26.6% -5.8% Max +0.0% +5.5% +1.8% +4.2% +1.7% Geometric Mean +0.0% +0.1% -6.3% -6.1% -0.7%
* | The final GC should be a major oneSimon Marlow2012-07-101-1/+1
|/ | | | | | | | We do a final GC before shutting down the system, to clean up. However, we were doing an ordinary GC rather than forcing a major GC, so especially when the allocation area is large, this final GC could be expensive. This is really just a bug - the final GC should have virtually nothing to do, because there is nothing live.
* don't crash if argv[0] == NULL (#7037)Simon Marlow2012-07-021-3/+9
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* Add getGCStatsEnabled function.Paolo Capriotti2012-06-192-0/+6
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* Switch to using the 'rubenvb' mingw buildsIan Lynagh2012-06-171-0/+4
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* Build fix for Hurd.Paolo Capriotti2012-06-171-2/+2
| | | | | | Patch by Samuel Thibault. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=659530.
* Fix build on win64Ian Lynagh2012-06-161-0/+1
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* Don't use 64-bit support functions on MIPS N32.Michał Masłowski2012-06-091-1/+1
| | | | | It uses native 64-bit instructions instead of these, despite having 32-bit pointers.
* Merge branch 'master' of darcs.haskell.org:/srv/darcs//ghcIan Lynagh2012-06-071-2/+8
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