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perl/os2/Changes
Dagfinn Ilmari Mannsåker a3815e44b8 Fix a bunch of repeated-word typos 
Mostly in comments and docs, but some in diagnostic messages and one
case of 'or die die'.
2020-05-22 10:45:06 +01:00

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after 5.003_05:
PERLLIB_PREFIX was not active if it matches an element of @INC
as a whole.
Do not need PERL_SBRK if crtdll-revision is >= 50.
Use -Zsmall-conv if crtdll-revision is >= 50 (in static perl!).
:7: warning: #warning <dirent.h> requires <sys/types.h>
We compile miniperl static. It cannot fork, thus there may be
problems with pipes (since HAS_FORK is in
place). Pipes are required by makemaker.
We compile perl___.exe A.OUT and dynamic. It should be able to
fork.
If we can fork, we my_popen by popen unless "-|". Thus we
write a cooky "-1" into the pid array to indicate
this.
Apparently we can fork, and we can load dynamic extensions
now, though probably not simultaneously.
*DB tests corrected for OS/2 one-user stat[2].
/bin/sh is intercepted and replaced by SH_PATH.
Note that having '\\' in the command line of one-arg `system'
would trigger call via shell.
Segfault with system {'ls'} 'blah'; corrected.
Documentation of OS/2-different features added to main PODs.
New buitins in Cwd::
Cwd::current_drive
Cwd::sys_chdir - leaves drive as it is.
Cwd::change_drive
Cwd::sys_is_absolute - has drive letter and is_rooted
Cwd::sys_is_rooted - has leading [/\\] (maybe
after a drive)
Cwd::sys_is_relative - changes with current dir
Cwd::sys_cwd - Interface to cwd from EMX.
Cwd::sys_abspath(name, dir)
- Really really odious
function. Returns absolute
name of file which would
have 'name' if CWD were 'dir'.
Dir defaults to the current dir.
Cwd::extLibpath [type] - Get/set current value of extended
Cwd::extLibpath_set - library search path.
path [type]
The optional last argument redirects
to END-path if true,
default is to search BEGIN-path.
(Note that some of these may be moved to different
libraries - eventually).
Executables:
perl - can fork, can dynalink (but not simultaneously)
perl_ - can fork, cannot dynalink
perl__ - same as perl___, but PM.
perl___ - cannot fork, can dynalink.
The build of the first one - perl - is rather convoluted, and
requires a build of miniperl_.
after 5.003_07:
custom tmpfile and tmpname which may use $TMP, $TEMP.
all the calls to OS/2 API wrapped so that it is safe to use
them under DOS (may die(), though).
Tested that popen works under DOS with modified PDKSH and RSX.
File::Copy works under DOS.
MakeMaker modified to work under DOS (perlmain.c.tmp and sh -c true).
after 5.003_08:
OS2::PrfDB exports symbols as documented;
should work on OS/2 2.1 again.
uses reliable signals when spawing.
do not use popen() any more - no intermediate shell unless needed.
after 5.003_11:
Functions emx_{malloc,realloc,calloc,free} are exported from DLL.
get_sysinfo() bugs corrected (flags were not used and wrongly defined).
after 5.003_20:
_isterm is substituted instead of isatty, s?random instead of srand.
`register' disabled if -DDEBUGGING and not AOUT build: stupid SD386.
3-argument select() was stomping over memory.
after 5.003_21:
Can start scripts by executing 'dir/script' and
'script.sh'. Form without extension will call shell only if
the specified file exists (will not look on path) (to prohibit
trying to run shell commands directly). - Needed by magic.t.
after 5.003_27:
ALTERNATE_SHEBANG="extproc " supported, thus options on this
line are processed (possibly twice). -S is made legal on such
a line. This -S -x is not needed any more.
perl.dll may be used from non-EMX programs (via PERL_SYS_INIT
- the caller should have valid variable "env" with
environment). Known problems: $$ does not work - is 0, waitpid
returns immediately, thus Perl cannot wait for completion of
started programs.
after 5.004_01:
flock emulation added (disable by setting env PERL_USE_FLOCK=0),
thanks to Rocco Caputo;
RSX bug with missing waitpid circumvented;
-S bug with full path with \ corrected.
before 5.004_02:
-S switch to perl enables a search with additional extensions
.cmd, .btm, .bat, .pl as well. This means that if you have
mycmd.pl or mycmd.bat on PATH,
perl -S mycmd
will work. Perl will also look in the current directory first.
Moreover, a bug with \; in PATH being non-separator is fixed.
after 5.004_03:
$^E tracks calls to CRT now. (May break if Perl masks some
changes to errno?)
$0 may be edited to longer lengths (at least under OS/2).
OS2::REXX->loads looks in the OS/2-ish fashion too.
after 5.004_04:
Default perl.exe was built with a shorter stack than expected.
Strip extensions DLLs too (unless debugging build).
./os2.c being RO could stop cp.
When starting scripts, Perl will find them on path (using the same
extensions as for -S command-line switch). If it finds magic
`extproc ' or `#!' cookies, it will start the scripts directly.
May use `cmd /c more <' as a pager.
If a program could not be started, this might have been hidden.
End of pipe was closed twice when `open'ing a pipeline.
after 5.004_53:
Minimal thread support added. One needs to manually move pthread.h
after 5.004_64:
Make DLL names different if thread-enabled.
Emit more informative internal DLL descriptions.
5.004_72:
Updated OS2::Process (v0.2) included.
after 5.004_73:
Fixed a bug with argv not NULL-terminated when starting scripts.
Support all the forms of starting scripts.
Support killing a child when receiving a signal during system()
(in two stage, on first send the same signal, on the next
send SIGKILL).
Add the same logic for scripts as in pdksh, including
stripping the path from #! line if needed,
calling EXECSHELL or COMSPEC for magic-less scripts;
Now pdksh is called only if one-arg system()/friends contains
metachars, or if magic-line asks for sh, or there is no magic
line and EXECSHELL is set to sh.
Shell is supplied the original command line if possible.
after 5.005_02:
Can start PM programs from non-PM sessions by plain system()
and friends. Can start DOS/Win programs. Can start
fullscreen programs from non-fullscreen sessions too.
In fact system(P_PM,...) was broken.
We mangle the name of perl*.DLL, to allow coexistence of different
versions of Perl executables on the system. Mangling of
names of extension DLL is also changed, thus running two
different versions of the executable with loaded
extensions should not lead to conflicts (since
extension-full-name and Perl-version mangling work in the
same set ot 576 possible keys, this may lead to clashes).
$^E was reset on the second read, and contained ".\r\n" at the end.
after 5.005_53:
Would segfault system()ing non-existing program;
AOUT build was hosed;
warning-test for getpriority() might lock the system hard on
pre-fixpak22 configuration (calling getpriority() on
non-existing process triggers a system-wide bug).
PrfDB was using a bug in processing XSUBs returning U32.
Variable $OS2::emx_rev implemented (string and numeric values
are the same as C variables _emx_rev and _emx_vprt).
Variable $OS2::emx_env implemented (same as C variable _emx_env).
Variable $OS2::os_ver implemented (_osmajor + 0.001 * _osminor).
Improved centralized management of HAB and HMQ. To get Perl's
HAB, call perl_hab_GET(). (After the initial call one
can use Perl_hab instead.) To require Perl's HMQ,
call perl_hmq_GET(), to release it call perl_hmq_UNSET(),
to obtain it between these calls use Perl_hmq.
HMQ management is refcounted, and the program will morph
itself into/from PM if required.
If perl.h cannot be included, hab may be obtained by Perl_hab_GET().
New function OS2::Error(do_harderror,do_exception). Returns
undef if it was not called yet, otherwise bit 1 is
set if on previous call do_harderror was enabled, bit
2 is set if on previous call do_exception was enabled.
This function enables/disables error popups associated with
hardware errors (Disk not ready etc.) and software exceptions.
New function OS2::Errors2Drive(drive). Returns undef if it was
not called yet, otherwise return false if Errors were
not requested to be written to a hard drive, or the
drive letter if this was requested.
This function may redirect error popups associated with
hardware errors (Disk not ready etc.) and software exceptions
to the file POPUPLOG.OS2 at the root directory of the
specified drive. Overrides OS2::Error() specified by
individual programs. Given argument undef will
disable redirection. Has global effect, persists
after the application exits.
New function OS2::SysInfo(). Returns a hash with system information.
The keys of the hash are
MAX_PATH_LENGTH, MAX_TEXT_SESSIONS, MAX_PM_SESSIONS,
MAX_VDM_SESSIONS, BOOT_DRIVE, DYN_PRI_VARIATION,
MAX_WAIT, MIN_SLICE, MAX_SLICE, PAGE_SIZE,
VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION,
MS_COUNT, TIME_LOW, TIME_HIGH, TOTPHYSMEM, TOTRESMEM,
TOTAVAILMEM, MAXPRMEM, MAXSHMEM, TIMER_INTERVAL,
MAX_COMP_LENGTH, FOREGROUND_FS_SESSION,
FOREGROUND_PROCESS
New function OS2::BootDrive(force). Returns a letter without colon.
New functions OS2::MorphPM(serve)/OS2::UnMorphPM(serve). Transforms
the current application into a PM application and back.
The argument true means that a real message loop is
going to be performed.
OS2::MorphPM() returns the PM message queue handle as an integer.
New function OS2::Serve_Messages(force). Fake on-demand
retrieval of outstanding PM messages. If force is false,
will not dispatch messages if a real message loop is known to
be present. Returns number of messages retrieved.
Dies with "QUITing..." if WM_QUIT message is obtained.
New function OS2::Process_Messages(force [, cnt]). Retrieval
of PM messages until window creation/destruction.
If force is false, will not dispatch messages
if a real message loop is known to be present.
Returns change in number of windows. If cnt is given,
it is incremented by the number of messages retrieved.
Dies with "QUITing..." if WM_QUIT message is obtained.
after 5.005_54:
Opening pipes from/to processes could fail if (un)appropriate
combination of STDIN/STDOUT was closed.
If the only shell-metachars of a command are ' 2>&1' at the
end of a command, it is executed without calling the external shell.
after 5.005_57:
Make UDP sockets return correct caller address (OS2 API bug);
Enable TCPIPV4 defines (works with Warp 3 IAK too?!);
Force Unix-domain sockets to start with "/socket", convert
'/' to '\' in the calls;
Make C<system 1, $cmd> to treat $cmd as in C<system $cmd>;
Autopatch Configure;
Find name and location of g[nu]patch.exe;
Autocopy perl????.dll to t/ when testing;
after 5.005_62:
Extract a lightweight DLL access module OS2::DLL from OS2::REXX
which would not load REXX runtime system;
Allow compile with os2.h which loads os2tk.h instead of os2emx.h;
Put the version of EMX CRTL into -D define;
Use _setsyserror() to store last error of OS/2 API for $^E;
New macro PERL_SYS_INIT3(argvp, argcp, envp);
Make Dynaloader return info on the failing module after failed dl_open();
OS2::REXX test were done for interactive testing (were writing
"ok" to stderr);
system() and friends return -1 on failure (was 0xFF00);
Put the full name of executable into $^X
(alas, uppercased - but with /);
t/io/fs.t was failing on HPFS386;
Remove extra ';' from defines for MQ operations.
pre 5.6.1:
Resolved: "Bad free()" messages (e.g., from DB_File) with -Zomf build.
The reason was: when an extension DLL was linked, the order of
libraries was similar to this:
f1.obj f2.obj libperl.lib -llibr1 -llibr2
(with C RTL implicitly after this). When libperl.lib overrides
some C RTL functions, they are correctly resolved when mentioned
in f1.obj and f2.obj. However, the resolution for libr1.lib and
libr2.lib is implementation-dependent.
With -Zomf linking the symbols are resolved for libr1.lib and
libr2.lib *only if* they reside in .obj-file-sections of libperl.lib
which were already "picked up" for symbols in f1.obj f2.obj.
However, libperl.lib is an import library for a .DLL, so *each
symbol in libperl.lib sits in its own pseudo-section*!
Corollary: only those symbol from libperl.lib which were already
mentioned in f1.obj f2.obj would be used for libr1.lib and
libr2.lib. Example: if f1.obj f2.obj do not mention calloc() but
libr1.lib and libr2.lib do, then .lib's will get calloc() of C RTL,
not one of libperl.lib.
Solution: create a small duplicate of libperl.lib with overriding
symbols only. Put it *after* -llibr1 -llibr2 on the link line.
Map strdup() and putenv() to Perl_strdup() and Perl_putenv()
inside this library.
Resolved: rmdir() and mkdir() do not accept trailing slashes.
Wrappers are implemented.
Resolved: when loading modules, FP mask may be erroneously changed by
_DLLInitTerm() (e.g., TCP32IP).
Solutions: a) dlopen() saves/restores the FP mask.
b) When starting, reset FP mask to a sane value
(if the DLL was compile-time linked).
New functions in package OS2:
unsigned _control87(unsigned new,unsigned mask) # as in EMX
unsigned get_control87()
# with default values good for handling exception mask:
unsigned set_control87_em(new=MCW_EM,mask=MCW_EM)
Needed to guard against other situations when the FP mask is
stomped upon. Apparently, IBM used a compiler (for some period
of time around '95?) which changes FP mask right and left...
Resolved: $^X was always uppercased (cosmetic). Solution:
use argv[0] if it differs from what the OS returns only in case.
Resolved: when creating PM message queues, WinCancelShutdown() was
not called even if the application said that it would not serve
messages in this queue. Could result in PM refusing to shutdown.
Solution: resolve WinCancelShutdown at run time, keep the refcount
of who is going to serve the queue.
Resolved: Perl_Deregister_MQ() segfaulted (pid/tid not initialized).
Resolved: FillWinError() would not fetch the error.
Solution: resolve WinGetLastError at run time, call it.
Resolved: OS2::REXX would ignore arguments given to a Perl function
imported into the REXX compartment via REXX_eval_with().
Resolved: OS2::REXX would treat arguments given to a Perl function
imported into the REXX compartment via _register() as ASCIIZ
strings inside of binary strings.
Resolved: OS2::REXX did not document _register().
Resolved: OS2::REXX would not report the error to REXX if an error
condition appeared during a call to Perl function from REXX
compartment. As a result, the return string was not initialized.
A complete example of a mini-application added to OS2::REXX.
README.os2 updated to reflect the current state of Perl.
pre 5.7.2:
aout build: kid bootstrap_* were not associated with XS.
bldlevel did not contain enough info.
extLibpath* was failing on the call of the second type.
Configure defines flushNULL now (EMX -Zomf bug broke autodetection).
Configure did not find SIGBREAK.
extLibpath supports LIBSTRICT, better error detection.
crypt() used if present in -lcrypt or -lufc.
dumb getpw*(), getgr*() etc. supported; as in EMX, but if no
$ENV{PW_PASSWD}, the passwd field contains a string which
cannot be returned by crypt() (for security reasons).
The unwound recursion in detecting executable by script was
using static buffers. Thus system('pod2text') would fail if the
current directory contained an empty file named 'perl'.
Put ordinals in the base DLL.
Enable EXE-compression.
Load time (ms): Without /e:2: 70.6; With /e:2: 75.3; Lxlite: 62.8
Size drops from 750K to 627K, with lxlite to 515K.
lxlite /c:max gives 488K, but dumps core in t/TEST
os2ish.h defines SYSLOG constants ==> Sys::Syslog works.
Corrected warnings related to OS/2 code.
At one place = was put instead of ==.
Setting $^E should work.
Force "SYS0dddd=0xbar: " to error messages and to dlerror().
($^E == 2 printed SYS0002 itself, but 110 did not.)
$OS2::nsyserror=0 switches off forcing SYSdddd on $^E.
perl_.exe does not require PM dlls any more (symbols resolved at
runtime on the as needed basis).
OS2::Process:
get/set: term size; codepages; screen's cursor; screen's contents
reliable session name setting;
process's parent pid, and the session id;
switching to and enumeration of sessions
window hierarchy inspection
post a message to a window
More robust getpriority() on older Warps.
New C APIs for runtime loading of entry points from DLLs
(useful for entry points not present on older versions of
OS/2, or with DLLs not present on floppy-boot stripped down
setups): CallORD(), DeclFuncByORD(), DeclVoidFuncByORD(),
DeclOSFuncByORD(), DeclWinFuncByORD(), AssignFuncPByORD().
pre 5.7.3:
Testing with PERL_TEST_NOVREXX=1 in environment makes tests
noninteractive (VREXX test requires pressing a button on a dialog).
New (ugly and voodooish) hack to work around a bug in EMX
runtime architecture:
EMX.DLL is *not* initialized from its _DLL_InitTerm()
routine, but the initialization is postponed until
immediately before main() is called by the principal
executable (may be the initialization also happens during
InitTerm of -Zso -Zsys DLLs?). The only reason I can see is
to postpone the initialization until the "layout" structure
is available, so the type of the executable is known.
[Instead, one should have broken the initialization into two
steps, with no-layout-known initialization ASAP, and the
finishing touch done when "layout" is known.]
It is due to this hack that -Zsys, -Zso etc. are needed so
often.
If during initialization of the Perl runtime environment we
discover that EMX environment is not set up completely, this
can be because of either our DLL being called from an
uncompatible flavor of EMX executable, or from an
unrelated-to-EMX.DLL (e.g., -Zsys or compiled with a
different compiler) executable. In the first case only the
CRTL is not completely initialized, in the other case
EMX.DLL may be not initialized too.
We detect which of these two situations takes place, then
explicitly call the initialization entry points of EMX.DLL
and of CRT. The large caveat is that the init-entry point
of EMX.DLL also moves the stack pointer (another defect of
EMX architecture, the init() and
set_exception_handlers_on_stack() entry points should have
been separated). Thus we need some inline-assembler to
compensate for this, and need to remove the installed
exception handler - it is useless anyway, since exception
handlers need to be on the stack. [This one is on the
stack, but will be overwritten on exit from the function.]
We also install an extra hack to run our atexit() handlers
on termination of the process (since the principal
executable does not know about *this* CRTL, we need to do it
ourselves - and longjmp() out of the chain of exception
handlers at a proper moment :-().
The net result: Perl DLL can be now used with an arbitrary
application. PERLREXX DLL is provided which makes Perl usable
from any REXX-enabled application.
New test targets added to test how well Perl DLL runs with
different flavors of executables (see all_harness etc). To
avoid waiting for the user button press, run with env
PERL_TEST_NOVREXX=1.
Another hack: on init of Perl runtime environment, the
executable is tested for being an aout EMX executable. The
test is the same done by gdb, so although this test is very
voodoo, it should be pretty robust (the beginning of the
executable code - at 0x10000 - is tested for a known bit
pattern). The result is used to set $OS2::can_fork, which is
eventually used to set $Config::Config{can_fork}.
REXX::eval_REXX() made reenterable. ADDRESS PERLEVAL
available for the run REXX code. PERLLASTERROR available.
A .map file is created for the .dll. Now easier to debug the
failures which do not happen with a debugging executable.
Duplicate libperl.lib as perl.lib etc. to make Embed happier.
File::Spec better adjusted to OS/2 (still does not support aa:/dir/).
New module OS::Process::Const with necessary constants for the
Perl calls which mimic OS/2 API calls.
After @14577:
$Config{pager} better (but needs work in the binary installer!).
New API: OS2::DLLname([type], [\&sub])
New OS2::Process APIs:
process_hwnd winTitle_set winTitle swTitle_set bothTitle_set
hWindowPos hWindowPos_set DesktopWindow
ActiveWindow_set
EnableWindow EnableWindowUpdate IsWindowEnabled
IsWindowVisible IsWindowShowing WindowPtr WindowULong
WindowUShort SetWindowBits SetWindowPtr
SetWindowULong
SetWindowUShort MPFROMSHORT MPVOID MPFROMCHAR
MPFROM2SHORT
MPFROMSH2CH MPFROMLONG
OS::Process::Const symbols exportable from OS::Process too.
OS::Process: prototypes on subroutines which do not naturally
take "vectors" as arguments (not backwards compatible!).
New C API: SaveCroakWinError(), WinError_2_Perl_rc,
DeclWinFuncByORD_CACHE(), DeclWinFuncByORD_CACHE_survive(),
DeclWinFuncByORD_CACHE_resetError_survive(),
DeclWinFunc_CACHE(), DeclWinFunc_CACHE_resetError(),
DeclWinFunc_CACHE_survive(),
DeclWinFunc_CACHE_resetError_survive(); many new OS2 entry
points conveniently available via wrappers which will do the
necessary run-time dynalinking.
After @15047:
makes PerlIO preserve the binary/text mode of filehandles
chosen by CRT library. (However, TTY handles still are not
clean, since switching them to TERMIO mode and back changes
the NL translation law at runtime, and PerlIO level does not
know this.)
After @18156:
mkdir() rmdir() tolerate trailing slashes.
"localized" morphing to PM when already morphed would unmorph at end.
Convert \n to \r\n in REXX commands (Classic REXX would allow \r and
\r\n, but not \n as line-ends).
After @19053:
Better detection of OS/2 in Configure scripts (if c:/ is not readable).
Better Configure support for \\ inside cpp-emited # lineno "filename".
Export pthread-support functions from threaded DLL.
[older change] If perl5.def file is present, the new perl5.def has
compatible ordinals.
OS/2 code compiles with threads enabled; much more robust pthreads
emulation (but some statics still present); survives fork().
New attributes supported with [f]stat() and chmod()
archived is 0x1000000 = 0100000000
hidden is 0x2000000 = 0200000000
system is 0x4000000 = 0400000000
If extra flag 0x8000000 = 01000000000 is missing during
chmod(), these 3 flags are ignored; this extra flag
is set in the result of stat() [this provides backward
compatibility, as well as transparency of stat()/
chmod() supporting DOSISH].
OS/2-specific modules use XSLoader now.
Remove DLLs manually after failing build (link386 would not?!).
Special-case stat()ing "/dev/nul" and "/dev/null" too.
Update dlopen() and friends: preserve i387 flags, better error messages,
support name==NULL (load for "this" DLL);
OS2::DLL does not eval() generated functions, uses closes instead;
new method wrapper_REXX() for DLL objects.
After @19774:
Use common typemap for OS2:: modules.
New test file os2/perlrexx.cmd (should be run manually; does not it
exit too early???).
Export fork_with_resources(), croak_with_os2error() from DLL.
usleep() availability put in %Config{}.
Combine most (but not all!) statics into one struct.
New load-on-demand C functions
Dos32QueryHeaderInfo
DosTmrQueryFreq
DosTmrQueryTime
WinQueryActiveDesktopPathname
WinInvalidateRect
WinCreateFrameControl
WinQueryClipbrdFmtInfo
WinQueryClipbrdOwner
WinQueryClipbrdViewer
WinQueryClipbrdData
WinOpenClipbrd
WinCloseClipbrd
WinSetClipbrdData
WinSetClipbrdOwner
WinSetClipbrdViewer
WinEnumClipbrdFmts
WinEmptyClipbrd
WinAddAtom
WinFindAtom
WinDeleteAtom
WinQueryAtomUsage
WinQueryAtomName
WinQueryAtomLength
WinQuerySystemAtomTable
WinCreateAtomTable
WinDestroyAtomTable
WinOpenWindowDC
DevOpenDC
DevQueryCaps
DevCloseDC
WinMessageBox
WinMessageBox2
WinQuerySysValue
WinSetSysValue
WinAlarm
WinFlashWindow
WinLoadPointer
WinQuerySysPointer
Check "\\SEM32\\PMDRAG.SEM" before loading PM-specific DLLs.
Handling of system {realname} was not correct in presence of
exe-type deduction, #!-emulation etc.
Use optimized PUSHTARG etc. XSUB convention.
$^E stringification contains PMERR_INVALID_HWND, PMERR_INVALID_HMQ,
PMERR_CALL_FROM_WRONG_THREAD, PMERR_NO_MSG_QUEUE,
PMERR_NOT_IN_A_PM_SESSION if these errors are not in .MSG file
(at least on Warp3fp42).
PERLLIB_PREFIX augmented by PERLLIB_582_PREFIX, PERLLIB_58_PREFIX,
PERLLIB_5_PREFIX (example for 5.8.2, the first one present is
considered).
New flag bit 0x2 for OS2::MorphPM(): immediately unmorph after creation
of message queue.
(De)Registring MQ preserves i386 flags.
When die()ing inside OS2:: API, include $^E in the message.
New function OS2::Timer(): returns Tmr-timer ticks (about 1MHz) since
start of OS/2, converted to number of seconds (keep in mind
that this timer uses a different crystal than the real-time
clock; thus these values have only weak relationship to the
wall clock time; behaviour with APM on is not defined).
New function OS2::DevCap() [XXX Wrong usage message!!!]
Usage: OS2::DevCap([WHAT, [HOW=0]]); the default for WHAT is
the memory device context, WHAT should be a device context
(as integer) if HOW==0 and a window handle (as integer) if
HOW==1. Returns a hash with keys
FAMILY IO_CAPS TECHNOLOGY DRIVER_VERSION WIDTH HEIGHT
WIDTH_IN_CHARS HEIGHT_IN_CHARS HORIZONTAL_RESOLUTION
VERTICAL_RESOLUTION CHAR_WIDTH CHAR_HEIGHT
SMALL_CHAR_WIDTH SMALL_CHAR_HEIGHT COLORS COLOR_PLANES
COLOR_BITCOUNT COLOR_TABLE_SUPPORT MOUSE_BUTTONS
FOREGROUND_MIX_SUPPORT BACKGROUND_MIX_SUPPORT
VIO_LOADABLE_FONTS WINDOW_BYTE_ALIGNMENT BITMAP_FORMATS
RASTER_CAPS MARKER_HEIGHT MARKER_WIDTH DEVICE_FONTS
GRAPHICS_SUBSET GRAPHICS_VERSION GRAPHICS_VECTOR_SUBSET
DEVICE_WINDOWING ADDITIONAL_GRAPHICS PHYS_COLORS
COLOR_INDEX GRAPHICS_CHAR_WIDTH GRAPHICS_CHAR_HEIGHT
HORIZONTAL_FONT_RES VERTICAL_FONT_RES DEVICE_FONT_SIM
LINEWIDTH_THICK DEVICE_POLYSET_POINTS
New function OS2::SysValues(which = -1, hwndDesktop = HWND_DESKTOP).
If which != -1, returns the corresponding SysValue. Otherwise
returns a hash with keys:
SWAPBUTTON DBLCLKTIME CXDBLCLK CYDBLCLK
CXSIZEBORDER CYSIZEBORDER ALARM 7 8 CURSORRATE
FIRSTSCROLLRATE SCROLLRATE NUMBEREDLISTS WARNINGFREQ
NOTEFREQ ERRORFREQ WARNINGDURATION NOTEDURATION
ERRORDURATION 19 CXSCREEN CYSCREEN CXVSCROLL CYHSCROLL
CYVSCROLLARROW CXHSCROLLARROW CXBORDER CYBORDER
CXDLGFRAME CYDLGFRAME CYTITLEBAR CYVSLIDER CXHSLIDER
CXMINMAXBUTTON CYMINMAXBUTTON CYMENU
CXFULLSCREEN CYFULLSCREEN CXICON CYICON
CXPOINTER CYPOINTER DEBUG CPOINTERBUTTONS POINTERLEVEL
CURSORLEVEL TRACKRECTLEVEL CTIMERS MOUSEPRESENT
CXALIGN CYALIGN
DESKTOPWORKAREAYTOP DESKTOPWORKAREAYBOTTOM
DESKTOPWORKAREAXRIGHT DESKTOPWORKAREAXLEFT 55
NOTRESERVED EXTRAKEYBEEP SETLIGHTS INSERTMODE 60 61 62 63
MENUROLLDOWNDELAY MENUROLLUPDELAY ALTMNEMONIC
TASKLISTMOUSEACCESS CXICONTEXTWIDTH CICONTEXTLINES
CHORDTIME CXCHORD CYCHORD CXMOTIONSTART CYMOTIONSTART
BEGINDRAG ENDDRAG SINGLESELECT OPEN CONTEXTMENU CONTEXTHELP
TEXTEDIT BEGINSELECT ENDSELECT BEGINDRAGKB ENDDRAGKB
SELECTKB OPENKB CONTEXTMENUKB CONTEXTHELPKB TEXTEDITKB
BEGINSELECTKB ENDSELECTKB ANIMATION ANIMATIONSPEED
MONOICONS KBDALTERED PRINTSCREEN /* 97, the last one on one of the DDK header */
LOCKSTARTINPUT DYNAMICDRAG 100 101 102 103 104 105 106 107
New function OS2::SysValues_set(which, val, hwndDesktop = HWND_DESKTOP).
Support new keys NUMPROCESSORS MAXHPRMEM MAXHSHMEM MAXPROCESSES
VIRTUALADDRESSLIMIT INT10ENABLE from OS2::SysInfo(); support
up to 10 unnamed values after the last named one.
New function OS2::SysInfoFor(id[,count=1]). [Wrong usage message!!!]
New function OS2::Beep(freq = 440, ms = 100).
New flags mod_name_C_function = 0x100, mod_name_HMODULE = 0x200 in
addition to old mod_name_handle = 0, mod_name_shortname = 1,
mod_name_full = 2 for OS2::DLLname(flag, cv); use an address
(as integer) or module handle instead of cv.
New function OS2::_headerInfo(req,size[,handle,[offset]]).
New function OS2::libPath(); returns the value of LIBPATH.
New function OS2::mytype(which=0) to query current process type:
0: type immediately after startup or last fork();
1: type immediately after startup;
2: type before the first morphing;
3: type as set now in the header.
New function OS2::mytype_set(type);
New function OS2::incrMaxFHandles(delta = 0); returns updated value
for the possible number of open file descriptors.
Make check_emx_runtime() thread-safe.
Fix float-to-string conversion in the range .0001..0.1 (would return
in exponential notation, per gcvt()).
Make fork(): a) preserve i387 flags;
b) preserve the dynamically loaded (system) DLLs;
c) preserve morphed status;
Make sleep() work with time > 0xffffffff/1000.
Implement usleep() via _sleep2(); make select() with num_files==0
thread-safe (via calling DosSleep()).
OS2::Process::Const() manages (MB|MBID|CF|CFI|SPTR)_.* constants too.
New (exported) functions from OS2::Process (some undocumented???):
process_codepage_set
TopLevel
FocusWindow_set_keep_Zorder
ActiveDesktopPathname
InvalidateRect
CreateFrameControl
ClipbrdFmtInfo
ClipbrdOwner
ClipbrdViewer
ClipbrdData
OpenClipbrd
CloseClipbrd
ClipbrdData_set
ClipbrdOwner_set
ClipbrdViewer_set
EnumClipbrdFmts
EmptyClipbrd
AddAtom
FindAtom
DeleteAtom
AtomUsage
AtomName
AtomLength
SystemAtomTable
CreateAtomTable
DestroyAtomTable
_ClipbrdData_set
ClipbrdText
ClipbrdText_set
_MessageBox
MessageBox
_MessageBox2
MessageBox2
LoadPointer
SysPointer
Alarm
FlashWindow
Do not use AUTOLOAD in OS2::DLL; moved to OS2::DLL::dll.
New method OS2::DLL->module() (to replace botched ->new() method).
New functions call20(), call20_p(), call20_rp3(), call20_rp3_p(),
call20_Dos(), call20_Win(), call20_Win_0OK(),
call20_Win_0OK_survive() in OS2::DLL to call C functions via
pointers.
After @20218:
select() workaround broke build of x2p.
New OS2::Process (exported, undocumented) functions:
kbdChar
kbdhChar
kbdStatus
_kbdStatus_set
kbdhStatus
kbdhStatus_set
vioConfig
viohConfig
vioMode
viohMode
viohMode_set
_vioMode_set
_vioState
_vioState_set
vioFont
vioFont_set
Make CheckOS2Error() macro return the error code.
New dynaloaded entry point DosReplaceModule().
New function OS2::replaceModule(target [, source [, backup]]).
After @21211:
Make Cwd::sys_abspath() default to '.' and taint the result.
Fix os2_process*.t to work if the default for VIO windows is maximized.
Fix to avoid non-existing PIDs for get_sysinfo() broke pid==0.
Restore default mode for pipes to be TEXT mode.
After @21379:
New OS2::Process functions: __term_mirror_screen() __term_mirror()
io_term().
Fix a.out build: special-case thread::shared, pick up all the build
static libraries, not only those for top-level modules.
Fix DLLname() test to work with the static build too.
New dynaloaded entry point RexxRegisterSubcomExe(); make OS2::REXX use
it so it is not linked with REXX*.DLLs any more.
If system "./foo", and empty "./foo" and "./foo.exe" exist,
argv[0] would be set to junk.
Make perl2cmd convert .pl files and keep the command-line switches.
Make XSLoader and Perl-specific parts of DynaLoader to die with static
builds (new variable $OS2::is_static used);
Move perlmain.obj to the DLL; export main() as dll_perlmain(); create
a library libperl_dllmain to translate the exported symbol
back to main(); link the executables with this library instead
of perlmain.obj.
Add /li to link386's options (line number info in the .map file).
Another break from fix to avoid non-existing PIDs for get_sysinfo().
After @21574:
Update import libraries when perl version changes (e.g., due to rsync).
New exported symbols dup() and dup2() [the wrappers have workaround
for off-by-one error + double fault in the pre-Nov2003 kernels
when a (wrong) filedescriptor which is limit+1 is dup()ed].
Enable disabling fd via a FILE* (to avoid close() during fclose()).
New dynaloaded entry point DosPerfSysCall().
New function OS2::perfSysCall(cmd = CMD_KI_RDCNT, ulParm1= 0,
ulParm2= 0, ulParm3= 0); when called
with cmd == CMD_KI_RDCNT = 0x63 and no other parameters,
returns: in the scalar context: the tick count of processor 1;
in the list context: 4 tick counts per processor:
total/idle/busy/interrupt-time.
with cmd == CMD_KI_GETQTY == 0x41 and no other parameters,
returns the CPU count. Currently in other cases the return
is void.
New executables perl___<number> generated with decreased stack size
(good when virtual memory is low; e.g. floppy boot).
After 5.8.2 (@21668):
Fixes to installperl scripts to avoid junk output, allow overwrite
of existing files (File::Copy::copy is mapped to DosCopy()
with flags which would not overwrite).
Disable DynaLoading of Perl modules with AOUT build (will core anyway).
For AOUT build: Quick hack to construct directories necessary for
/*/% stuff [maybe better do it from hints/os2.sh?].
AOUT build: do -D__ST_MT_ERRNO__ to simplify linking with -Zmtd
(e.g., to test GD: gd.dll linked with -Zmtd).
MANIFEST.SKIP was read without a drive part of the filename.
Rename Cwd::extLibpath*() to OS2::... (old names still preserved).
Install perl.lib and perl.a too.
New methods libPath_find(),has_f32(),handle(),fullname() for OS2::DLL.
Enable quad support using long long.
New C exported functions os2_execname(), async_mssleep(), msCounter(),
InfoTable(), dir_subst(), Perl_OS2_handler_install(),
fill_extLibpath().
async_mssleep() uses some undocumented features which allow usage of
highest possible resolution of sleep() while preserving low
priority (raise of resolution may be not available before
Warp3fp40; resolution is 8ms/CLOCK_SCALE).
usleep() and select(undef,undef,undef,$t) are using this
interface for time up to 0.5sec.
New convenience macros os2win_croak_0OK(rc,msg), os2win_croak(rc,msg),
os2cp_croak(rc,msg).
Supports ~installprefix, ~exe, ~dll in PERLLIB_PREFIX etc (actual
directories are substituted).
New functions OS2::msCounter(), OS2::ms_sleep(), OS2::_InfoTable().
Checks stack when fixing EMX being under-initialized (-Zomf -Zsys
produces 32K stack???).
New environment variables PERL_BEGINLIBPATH, PERL_PRE_BEGINLIBPATH,
PERL_POST_BEGINLIBPATH, PERL_ENDLIBPATH,
PERL_PRE_ENDLIBPATH PERL_POST_ENDLIBPATH (~-enabled);
PERL_EMXLOAD_SECS.
Better handling of FIRST_MAKEFILE (propagate to subdirs during test,
do not require Makefile.PL present).
perl2cmd converter: do not rewrite if no change.
README.os2 updated with info on building binary distributions and
custom perl executables (but not much else).
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