Mercurial > repo
diff perl-5.22.2/os2/Changes @ 8045:a16537d2fe07
<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
| author | HackBot |
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| date | Sat, 14 May 2016 14:54:38 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/perl-5.22.2/os2/Changes Sat May 14 14:54:38 2016 +0000 @@ -0,0 +1,821 @@ +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 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).