GitLab

Win32: Use CriticalSections instead of Mutexes, they are *much* faster.

adjust type of startSignalHandlers() to make changes to Win32 version

schedulePushWork(): don't attempt to move the thread bound to the
current Task to a different Capability.

wibble

Improve the Win32 implementation of the time-measurement stuff.  Now
supports per-thread CPU time, and the elapsed time should be correct
(previously it was the sum of user time & kernel time, which isn't
what we want).

use getThreadCPUTime, not getProcessTimes

Fixes for console event handling on Win32 in the threaded/SMP runtime.
(it now builds, but is untested).

Missing import for new assert

Modify ACQUIRE_LOCK/RELEASE_LOCK for use in .cmm files

avoid a warning

Fix build on win32.

Improvments to time-measurement and stats:

  - move all the platform-dependent timing related stuff into
    posix/GetTime.c and win32/GetTime.c, with the machine-indepent
    interface specified in GetTime.h.  This is now used by
    Stats.c.

  - On Unix, use gettimeofday() and getrusage() by default, falling
    back to time() if one of these isn't available.

  - try to implement thread-specfic CPU-time measurement using
    clock_gettime() on Unix.  Doesn't work reliably on Linux, because
    the implemenation tries to use the processor TSC, which on an
    SMP machine goes wrong when the thread moves between CPUs.  However,
    it's slightly less bogus that before, and hopefully will improve
    in the future.

indentation only

Check for librt and clock_gettime()

Second correction to the TH fix of Oct 26, involving thFAKE

Original message
  1) A bug in the renaming of [d| brackets |]. The problem was
  that when we renamed the bracket we messed up the name cache, because
  the module was still that of the parent module. Now we set a fake
  module before renaming it.

This commit fixes the typecheker problem in a different way,
in tcLookupGlobal.

Trace output only

release/acquire the SM lock around scheduleFinalizers(), because we
need to call allocateLocal() in there, which acquires the SM lock.

when shutting down, don't allow a worker to exit until the run queue
is empty, because the thread in exitScheduler() is waiting for this.

scheduleHandleStackOverflow: fix bug in non-threaded RTS - if
(task->tso != NULL), then (task->tso) is not necessarily the TSO we
are running (in the threaded RTS it is).

Also fix a few non-threaded warnings while I'm here.

add an ASSERT

Fix warnings when assigning the result of a foreign call to BaseReg
(as now happens in SMP mode with resumeThread()).

Correct the TH fix of Oct 26, involving thFAKE
		MERGE TO STABLE

Original message
  1) A bug in the renaming of [d| brackets |]. The problem was
  that when we renamed the bracket we messed up the name cache, because
  the module was still that of the parent module. Now we set a fake
  module before renaming it.

But we have to tell the *typechecker* too, not just the renamer.
See comments with TcSplice.tc_bracket (DecBr case).

Should fix TH failures in the STABLE branch

Export lists

x86_64: pass -fno-unit-at-a-time to gcc.  See comment for details.

Wibble to: "Add a new pragma: SPECIALISE INLINE"

I messed up the way that NOINLINE is parsed; this commit fixes it.

clean up more junk generated by gcc

x86_64: catch and fix one kind of crappy code generated by gcc

	    #    movq -4(%rbp), %rax
	    #    jmp  *%rax

==>

	    #    jmp  *-4(%rbp)

Reverse the sense of the is-young-generation test in the update code.
This generates much better code from gcc.

Change the way in which the .exe suffix to the output file is added. The reason
is that "-o main" will generate main.exe on Windows while the doesFileExists "main"
in DriverPipeline.link will return False.

The guessed output file should have ".exe" extension on Windows. ld tends to
add .exe automatically if the output file doesn't have extension but if
we don't add the extension explicitly then the doesFileExists check in
DriverPipeline.link will fail.

Fixed the last commit, which broke the nightly builds. I'm not sure if
this is really a fix or a workaround only, though...

The mut_lists array was allocated but never initialized. This was causing SegFault.

document -stubdir

Add -stubdir option to control location of generated stub files.  Also
do some clean up while I'm here - remove hscStubCOut/hscStubHOut from
DynFlags, and add

  mkStubPaths :: DynFlags -> Module -> ModLocation -> (FilePath,FilePath)

to Finder.  (this seemed better than caching the stub paths in every
ModLocation, because they are rarely needed and only present in home
modules, and are easily calculated from other available information).

-stubdir behaves in exactly the same way as -odir and -hidir.

Change the default executable name to match the basename of the source
file containing the Main module (or the module specified by -main-is),
if there is one.  On Windows, the .exe extension is added.

As requested on the ghc-users list, and as implemented by Tomasz
Zielonka <tomasz.zielonka at gmail.com>, with modifications by me.

I changed the type of the mainModIs field of DynFlags from Maybe
String to Module, which removed some duplicate code.

Fix double "Linking ..." message, and mention the name of the
executable in the message.

Fix links to library doc for Haddock 0.7.

Fix recent breakage on non-Windows systems

- Very simple work-sharing amongst Capabilities: whenever a Capability
  detects that it has more than 1 thread in its run queue, it runs
  around looking for empty Capabilities, and shares the threads on its
  run queue equally with the free Capabilities it finds.

- unlock the garbage collector's mutable lists, by having private
  mutable lists per capability (and per generation).  The private
  mutable lists are moved onto the main mutable lists at each GC.
  This pulls the old-generation update code out of the storage manager
  mutex, which is one of the last remaining causes of (alleged) contention.

- Fix some problems with synchronising when a GC is required.  We should
  synchronise quicker now.

Improve warning a little (suggested by Benjamin Pierce)