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Switch over to the new hierarchical libraries
---------------------------------------------
This commit reorganises our libraries to use the new hierarchical
module namespace extension.
The basic story is this:
- fptools/libraries contains the new hierarchical libraries.
Everything in here is "clean", i.e. most deprecated stuff has
been removed.
- fptools/libraries/base is the new base package
(replacing "std") and contains roughly what was previously
in std, lang, and concurrent, minus deprecated stuff.
Things that are *not allowed* in libraries/base include:
Addr, ForeignObj, ByteArray, MutableByteArray,
_casm_, _ccall_, ``'', PrimIO
For ByteArrays and MutableByteArrays we use UArray and
STUArray/IOUArray respectively now.
Modules previously called PrelFoo are now under
fptools/libraries/GHC. eg. PrelBase is now GHC.Base.
- fptools/libraries/haskell98 provides the Haskell 98 std.
libraries (Char, IO, Numeric etc.) as a package. This
package is enabled by default.
- fptools/libraries/network is a rearranged version of
the existing net package (the old package net is still
available; see below).
- Other packages will migrate to fptools/libraries in
due course.
NB. you need to checkout fptools/libraries as well as
fptools/hslibs now. The nightly build scripts will need to be
tweaked.
- fptools/hslibs still contains (almost) the same stuff as before.
Where libraries have moved into the new hierarchy, the hslibs
version contains a "stub" that just re-exports the new version.
The idea is that code will gradually migrate from fptools/hslibs
into fptools/libraries as it gets cleaned up, and in a version or
two we can remove the old packages altogether.
- I've taken the opportunity to make some changes to the build
system, ripping out the old hslibs Makefile stuff from
mk/target.mk; the new package building Makefile code is in
mk/package.mk (auto-included from mk/target.mk).
The main improvement is that packages now register themselves at
make boot time using ghc-pkg, and the monolithic package.conf
in ghc/driver is gone.
I've updated the standard packages but haven't tested win32,
graphics, xlib, object-io, or OpenGL yet. The Makefiles in
these packages may need some further tweaks, and they'll need
pkg.conf.in files added.
- Unfortunately all this rearrangement meant I had to bump the
interface-file version and create a bunch of .hi-boot-6 files :-(
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Added & exported low-level memcpy() wrappers - possible to offset both
src and dest.
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- removed PrelPosix.c_read, PrelPosix.c_write
- added Ptr and RawBuffer versions of PrelHandle.write_off,
and PrelHandle.read_off and exported them, i.e., PrelHandle
now exports:
read_off_ba :: FD -> Bool -> RawBuffer -> Int -> CInt -> IO CInt
read_off :: FD -> Bool -> Ptr CChar -> Int -> CInt -> IO CInt
write_off_ba :: CInt -> Bool -> RawBuffer -> Int -> CInt -> IO CInt
write_off :: CInt -> Bool -> Ptr CChar -> Int -> CInt -> IO CInt
- make hPutChar (win)socket friendly.
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Support IO.hWaitForInput on Win32 platforms (on file and socket handles).
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Make the IO implementation work with WinSock once again.
When creating sockets with WinSock, you don't get back
a file descriptor, but a SOCKET (which just so happens
to map to the same type as a 'normal' file descriptor).
This SOCKET value cannot be used with the CRT ops
read(), write(), close(), but you have to use the
socket-specific operations (recv(), send(), and closesocket(),
respectively) instead.
To keep track of this distinction between file and
socket file descriptors, the following changes were
made:
* a Handle__ has got a new field, haIsStream, which is True
for sockets / streams.
(this field is essentially unused in non-Win32 settings,
but I decided not to conditionalise its presence).
* PrelHandle.openFd now takes an extra (Maybe FDType) argument,
which lets you force what type of FD we're converting into
a Handle (this is crucial for WinSock SOCKETs, since we don't
want to attempt fstat()ing them).
Fixes breakage that was introduced with May 2001 (or earlier)
rewrite of the IO layer. This commit build upon recent IO changes
to HEAD, so merging it to STABLE will require importing those
changes too (I'll let others be the judge whether this should
be done or not).
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remove an unnecessary duplicate binding
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inputReady can be an unsafe foreign import.
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Move towards having the IO implementation be plat-independent
at the Haskell source code level.
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