1. 17 Jun, 2012 1 commit
  2. 11 Feb, 2012 1 commit
  3. 17 Jun, 2010 1 commit
  4. 25 May, 2010 1 commit
  5. 24 May, 2010 1 commit
    • Simon Marlow's avatar
      Change our #defines to work on FreeBSD too · 757d3c5a
      Simon Marlow authored
      With glibc, things like _POSIX_C_SOURCE and _ISOC99_SOURCE are
      additive, but on FreeBSD they are mutually exclusive.  However, it
      turns out we only need to define _POSIX_C_SOURCE and _XOPEN_SOURCE to
      get all the C99 stuff we need too, so there's no need for any #ifdefs.
      Submitted by: Gabor PALI <pgj@FreeBSD.org>
  6. 07 Aug, 2009 1 commit
  7. 02 Aug, 2009 1 commit
    • Simon Marlow's avatar
      RTS tidyup sweep, first phase · a2a67cd5
      Simon Marlow authored
      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
       - 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.
  8. 07 Apr, 2006 1 commit
    • Simon Marlow's avatar
      Reorganisation of the source tree · 0065d5ab
      Simon Marlow authored
      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.
  9. 21 Oct, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-10-21 14:02:17 by simonmar] · 03a9ff01
      simonmar authored
      Big re-hash of the threaded/SMP runtime
      This is a significant reworking of the threaded and SMP parts of
      the runtime.  There are two overall goals here:
        - To push down the scheduler lock, reducing contention and allowing
          more parts of the system to run without locks.  In particular,
          the scheduler does not require a lock any more in the common case.
        - To improve affinity, so that running Haskell threads stick to the
          same OS threads as much as possible.
      At this point we have the basic structure working, but there are some
      pieces missing.  I believe it's reasonably stable - the important
      parts of the testsuite pass in all the (normal,threaded,SMP) ways.
      In more detail:
        - Each capability now has a run queue, instead of one global run
          queue.  The Capability and Task APIs have been completely
          rewritten; see Capability.h and Task.h for the details.
        - Each capability has its own pool of worker Tasks.  Hence, Haskell
          threads on a Capability's run queue will run on the same worker
          Task(s).  As long as the OS is doing something reasonable, this
          should mean they usually stick to the same CPU.  Another way to
          look at this is that we're assuming each Capability is associated
          with a fixed CPU.
        - What used to be StgMainThread is now part of the Task structure.
          Every OS thread in the runtime has an associated Task, and it
          can ask for its current Task at any time with myTask().
        - removed RTS_SUPPORTS_THREADS symbol, use THREADED_RTS instead
          (it is now defined for SMP too).
        - The RtsAPI has had to change; we must explicitly pass a Capability
          around now.  The previous interface assumed some global state.
          SchedAPI has also changed a lot.
        - The OSThreads API now supports thread-local storage, used to
          implement myTask(), although it could be done more efficiently
          using gcc's __thread extension when available.
        - I've moved some POSIX-specific stuff into the posix subdirectory,
          moving in the direction of separating out platform-specific
        - lots of lock-debugging and assertions in the runtime.  In particular,
          when DEBUG is on, we catch multiple ACQUIRE_LOCK()s, and there is
          also an ASSERT_LOCK_HELD() call.
      What's missing so far:
        - I have almost certainly broken the Win32 build, will fix soon.
        - any kind of thread migration or load balancing.  This is high up
          the agenda, though.
        - various performance tweaks to do
        - throwTo and forkProcess still do not work in SMP mode
  10. 13 Aug, 2004 1 commit