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OS/2 docu
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867988ae
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1after 5.003_05:
2 PERLLIB_PREFIX was not active if it matches an element of @INC
3 as a whole.
4 Do not need PERL_SBRK if crtdll-revision is >= 50.
5 Use -Zsmall-conv if crtdll-revision is >= 50 (in static perl!).
6:7: warning: #warning <dirent.h> requires <sys/types.h>
7 We compile miniperl static. It cannot fork, thus there may be
8 problems with pipes (since HAS_FORK is in
9 place). Pipes are required by makemaker.
10 We compile perl___.exe A.OUT and dynamic. It should be able to
11 fork.
12 If we can fork, we my_popen by popen unless "-|". Thus we
13 write a cooky "-1" into the pid array to indicate
14 this.
15 Apparently we can fork, and we can load dynamic extensions
16 now, though probably not simultaneously.
17 *DB tests corrected for OS/2 one-user stat[2].
18 /bin/sh is intercepted and replaced by SH_PATH.
19 Note that having '\\' in the command line of one-arg `system'
20 would trigger call via shell.
21 Segfault with system {'ls'} 'blah'; corrected.
22 Documentation of OS/2-different features added to main PODs.
23 New buitins in Cwd::
24
25 Cwd::current_drive
26 Cwd::sys_chdir - leaves drive as it is.
27 Cwd::change_drive
28 Cwd::sys_is_absolute - has drive letter and is_rooted
29 Cwd::sys_is_rooted - has leading [/\\] (maybe
30 after a drive)
31 Cwd::sys_is_relative - changes with current dir
32 Cwd::sys_cwd - Interface to cwd from EMX.
33 Cwd::sys_abspath(name, dir)
34 - Really really odious
35 function. Returns absolute
36 name of file which would
37 have 'name' if CWD were 'dir'.
38 Dir defaults to the current dir.
39 Cwd::extLibpath [type] - Get/set current value of extended
40 Cwd::extLibpath_set - library search path.
41 path [type]
42 The optional last argument redirects
43 to END-path if true,
44 default is to search BEGIN-path.
45 (Note that some of these may be moved to different
46 libraries - eventually).
47 Executables:
48 perl - can fork, can dynalink (but not simultaneously)
49 perl_ - can fork, cannot dynalink
50 perl__ - same as perl___, but PM.
51 perl___ - cannot fork, can dynalink.
52 The build of the first one - perl - is rather convoluted, and
53 requires a build of miniperl_.
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54
55after 5.003_07:
56 custom tmpfile and tmpname which may use $TMP, $TEMP.
57 all the calls to OS/2 API wrapped so that it is safe to use
58 them under DOS (may die(), though).
59 Tested that popen works under DOS with modified PDKSH and RSX.
60 File::Copy works under DOS.
61 MakeMaker modified to work under DOS (perlmain.c.tmp and sh -c true).
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62
63after 5.003_08:
64 OS2::PrfDB exports symbols as documented;
65 should work on OS/2 2.1 again.
66 uses reliable signals when spawing.
67 do not use popen() any more - no intermediate shell unless needed.
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68
69after 5.003_11:
70 Functions emx_{malloc,realloc,calloc,free} are exported from DLL.
71 get_sysinfo() bugs corrected (flags were not used and wrongly defined).
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72
73after 5.003_20:
74 _isterm is substituted instead of isatty, s?random instead of srand.
75 `register' disabled if -DDEBUGGING and not AOUT build: stupid SD386.
76 3-argument select() was stomping over memory.
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77
78after 5.003_21:
79 Can start scripts by executing 'dir/script' and
80 'script.sh'. Form without extension will call shell only if
81 the specified file exists (will not look on path) (to prohibit
82 trying to run shell commands directly). - Needed by magic.t.
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83
84after 5.003_27:
85 ALTERNATE_SHEBANG="extproc " supported, thus options on this
86 line are processed (possibly twice). -S is made legal on such
87 a line. This -S -x is not needed any more.
88 perl.dll may be used from non-EMX programs (via PERL_SYS_INIT
89 - the caller should have valid variable "env" with
90 environment). Known problems: $$ does not work - is 0, waitpid
91 returns immediately, thus Perl cannot wait for completion of
92 started programs.
d8c2d278 93
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94after 5.004_01:
95 flock emulation added (disable by setting env PERL_USE_FLOCK=0),
96 thanks to Rocco Caputo;
97 RSX bug with missing waitpid circomvented;
98 -S bug with full path with \ corrected.
99
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100before 5.004_02:
101 -S switch to perl enables a search with additional extensions
102 .cmd, .btm, .bat, .pl as well. This means that if you have
103 mycmd.pl or mycmd.bat on PATH,
104 perl -S mycmd
105 will work. Perl will also look in the current directory first.
106 Moreover, a bug with \; in PATH being non-separator is fixed.
84902520 107
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108after 5.004_03:
109 $^E tracks calls to CRT now. (May break if Perl masks some
110 changes to errno?)
111 $0 may be edited to longer lengths (at least under OS/2).
112 OS2::REXX->loads looks in the OS/2-ish fashion too.
dd96f567 113
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114after 5.004_04:
115 Default perl.exe was built with a shorter stack than expected.
116 Strip extensions DLLs too (unless debugging build).
117 ./os2.c being RO could stop cp.
118 When starting scripts, Perl will find them on path (using the same
119 extensions as for -S command-line switch). If it finds magic
120 `extproc ' or `#!' cookies, it will start the scripts directly.
121 May use `cmd /c more <' as a pager.
122 If a program could not be started, this might have been hidden.
123 End of pipe was closed twice when `open'ing a pipeline.
124
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125after 5.004_53:
126 Minimal thread support added. One needs to manually move pthread.h
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127
128after 5.004_64:
129 Make DLL names different if thread-enabled.
130 Emit more informative internal DLL descriptions.
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131
1325.004_72:
133 Updated OS2::Process (v0.2) included.
134
135after 5.004_73:
136 Fixed a bug with argv not NULL-terminated when starting scripts.
137 Support all the forms of starting scripts.
138 Support killing a child when receiving a signal during system()
139 (in two stage, on first send the same signal, on the next
140 send SIGKILL).
141 Add the same logic for scripts as in pdksh, including
142 stripping the path from #! line if needed,
143 calling EXECSHELL or COMSPEC for magic-less scripts;
144 Now pdksh is called only if one-arg system()/friends contains
145 metachars, or if magic-line asks for sh, or there is no magic
146 line and EXECSHELL is set to sh.
147 Shell is supplied the original command line if possible.
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148
149after 5.005_02:
150 Can start PM programs from non-PM sessions by plain system()
151 and friends. Can start DOS/Win programs. Can start
152 fullscreen programs from non-fullscreen sessions too.
153 In fact system(P_PM,...) was broken.
154 We mangle the name of perl*.DLL, to allow coexistence of different
155 versions of Perl executables on the system. Mangling of
156 names of extension DLL is also changed, thus running two
157 different versions of the executable with loaded
158 extensions should not lead to conflicts (since
159 extension-full-name and Perl-version mangling work in the
160 same set ot 576 possible keys, this may lead to clashes).
161 $^E was reset on the second read, and contained ".\r\n" at the end.
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162
163after 5.005_53:
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164 Would segfault system()ing non-existing program;
165 AOUT build was hosed;
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166 warning-test for getpriority() might lock the system hard on
167 pre-fixpak22 configuration (calling getpriority() on
168 non-existing process triggers a system-wide bug).
169
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170
171 PrfDB was using a bug in processing XSUBs returning U32.
172
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173 Variable $OS2::emx_rev implemented (string and numberic values
174 are the same as C variables _emx_rev and _emx_vprt).
175 Variable $OS2::emx_env implemented (same as C variable _emx_env).
176 Variable $OS2::os_ver implemented (_osmajor + 0.001 * _osminor).
177
178 Improved centralized management of HAB and HMQ. To get Perl's
179 HAB, call perl_hab_GET(). (After the initial call one
180 can use Perl_hab instead.) To require Perl's HMQ,
181 call perl_hmq_GET(), to release it call perl_hmq_UNSET(),
182 to obtain it between these calls use Perl_hmq.
183 HMQ management is refcounted, and the program will morph
184 itself into/from PM if required.
185 If perl.h cannot be included, hab may be obtained by Perl_hab_GET().
186
187 New function OS2::Error(do_harderror,do_exception). Returns
188 undef if it was not called yet, otherwise bit 1 is
189 set if on previous call do_harderror was enabled, bit
190 2 is set if if on previous call do_exception was enabled.
191 This function enables/disables error popups associated with
192 hardware errors (Disk not ready etc.) and software exceptions.
193
194 New function OS2::Errors2Drive(drive). Returns undef if it was
195 not called yet, otherwise return false if Errors were
196 not requested to be written to a hard drive, or the
197 drive letter if this was requested.
198 This function may redirect error popups associated with
199 hardware errors (Disk not ready etc.) and software exceptions
200 to the file POPUPLOG.OS2 at the root directory of the
201 specified drive. Overrides OS2::Error() specified by
202 individual programs. Given argument undef will
203 disable redirection. Has global effect, persists
204 after the application exits.
205
206 New function OS2::SysInfo(). Returns a hash with system information.
207 The keys of the hash are
208
209 MAX_PATH_LENGTH, MAX_TEXT_SESSIONS, MAX_PM_SESSIONS,
210 MAX_VDM_SESSIONS, BOOT_DRIVE, DYN_PRI_VARIATION,
211 MAX_WAIT, MIN_SLICE, MAX_SLICE, PAGE_SIZE,
212 VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION,
213 MS_COUNT, TIME_LOW, TIME_HIGH, TOTPHYSMEM, TOTRESMEM,
214 TOTAVAILMEM, MAXPRMEM, MAXSHMEM, TIMER_INTERVAL,
215 MAX_COMP_LENGTH, FOREGROUND_FS_SESSION,
216 FOREGROUND_PROCESS
217
218 New function OS2::BootDrive(force). Returns a letter without colon.
219
220 New functions OS2::MorphPM(serve)/OS2::UnMorphPM(serve). Transforms
221 the current application into a PM application and back.
222 The argument true means that a real message loop is
223 going to be performed.
224 OS2::MorphPM() returns the PM message queue handle as an integer.
225
226 New function OS2::Serve_Messages(force). Fake on-demand
227 retrieval of outstanding PM messages. If force is false,
228 will not dispatch messages if a real message loop is known to
229 be present. Returns number of messages retrieved.
230 Dies with "QUITing..." if WM_QUIT message is obtained.
231
232 New function OS2::Process_Messages(force [, cnt]). Retrieval
233 of PM messages until window creation/destruction.
234 If force is false, will not dispatch messages
235 if a real message loop is known to be present.
236 Returns change in number of windows. If cnt is given,
237 it is incremented by the number of messages retrieved.
238 Dies with "QUITing..." if WM_QUIT message is obtained.
239
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240after 5.005_54:
241 Opening pipes from/to processes could fail if (un)appropriate
242 combination of STDIN/STDOUT was closed.
243
244 If the only shell-metachars of a command are ' 2>&1' at the
245 end of a command, it is executed without calling the external shell.
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246
247after 5.005_57:
248 Make UDP sockets return correct caller address (OS2 API bug);
249 Enable TCPIPV4 defines (works with Warp 3 IAK too?!);
250 Force Unix-domain sockets to start with "/socket", convert
251 '/' to '\' in the calls;
252 Make C<system 1, $cmd> to treat $cmd as in C<system $cmd>;
253 Autopatch Configure;
254 Find name and location of g[nu]patch.exe;
255 Autocopy perl????.dll to t/ when testing;
256
257after 5.005_62:
258 Extract a lightweight DLL access module OS2::DLL from OS2::REXX
259 which would not load REXX runtime system;
260 Allow compile with os2.h which loads os2tk.h instead of os2emx.h;
261 Put the version of EMX CRTL into -D define;
262 Use _setsyserror() to store last error of OS/2 API for $^E;
263 New macro PERL_SYS_INIT3(argvp, argcp, envp);
264 Make Dynaloader return info on the failing module after failed dl_open();
265 OS2::REXX test were done for interactive testing (were writing
266 "ok" to stderr);
267 system() and friends return -1 on failure (was 0xFF00);
268 Put the full name of executable into $^X
269 (alas, uppercased - but with /);
270 t/io/fs.t was failing on HPFS386;
271 Remove extra ';' from defines for MQ operations.
5ba48348
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272
273pre 5.6.1:
274 Resolved: "Bad free()" messages (e.g., from DB_File) with -Zomf build.
275 The reason was: when an extension DLL was linked, the order of
276 libraries was similar to this:
277 f1.obj f2.obj libperl.lib -llibr1 -llibr2
278 (with C RTL implicitly after this). When libperl.lib overrides
279 some C RTL functions, they are correctly resolved when mentioned
280 in f1.obj and f2.obj. However, the resolution for libr1.lib and
281 libr2.lib is implementation-dependent.
282
283 With -Zomf linking the symbols are resolved for libr1.lib and
284 libr2.lib *only if* they reside in .obj-file-sections of libperl.lib
285 which were already "picked up" for symbols in f1.obj f2.obj.
286 However, libperl.lib is an import library for a .DLL, so *each
287 symbol in libperl.lib sits in its own pseudo-section*!
288
289 Corollary: only those symbol from libperl.lib which were already
290 mentioned in f1.obj f2.obj would be used for libr1.lib and
291 libr2.lib. Example: if f1.obj f2.obj do not mention calloc() but
292 libr1.lib and libr2.lib do, then .lib's will get calloc() of C RTL,
293 not one of libperl.lib.
294
295 Solution: create a small duplicate of libperl.lib with overriding
296 symbols only. Put it *after* -llibr1 -llibr2 on the link line.
297 Map strdup() and putenv() to Perl_strdup() and Perl_putenv()
298 inside this library.
299
300 Resolved: rmdir() and mkdir() do not accept trailing slashes.
301 Wrappers are implemented.
302 Resolved: when loading modules, FP mask may be erroneously changed by
303 _DLLInitTerm() (e.g., TCP32IP).
304 Solutions: a) dlopen() saves/restores the FP mask.
305 b) When starting, reset FP mask to a sane value
306 (if the DLL was compile-time linked).
307 New functions in package OS2:
308 unsigned _control87(unsigned new,unsigned mask) # as in EMX
309 unsigned get_control87()
310 # with default values good for handling exception mask:
311 unsigned set_control87_em(new=MCW_EM,mask=MCW_EM)
312 Needed to guard against other situations when the FP mask is
313 stompted upon. Apparently, IBM used a compiler (for some period
314 of time around '95?) which changes FP mask right and left...
315 Resolved: $^X was always uppercased (cosmetic). Solution:
316 use argv[0] if it differs from what the OS returns only in case.
317 Resolved: when creating PM message queues, WinCancelShutdown() was
318 not called even if the application said that it would not serve
319 messages in this queue. Could result in PM refusing to shutdown.
320
321 Solution: resolve WinCancelShutdown at run time, keep the refcount
322 of who is going to serve the queue.
323 Resolved: Perl_Deregister_MQ() segfaulted (pid/tid not initialized).
324 Resolved: FillWinError() would not fetch the error.
325 Solution: resolve WinGetLastError at run time, call it.
326 Resolved: OS2::REXX would ignore arguments given to a Perl function
327 imported into the REXX compartment via REXX_eval_with().
328 Resolved: OS2::REXX would treat arguments given to a Perl function
329 imported into the REXX compartment via _register() as ASCIIZ
330 strings inside of binary strings.
331 Resolved: OS2::REXX did not document _register().
332 Resolved: OS2::REXX would not report the error to REXX if an error
333 condition appeared during a call to Perl function from REXX
334 compartment. As a result, the return string was not initialized.
335 A complete example of a mini-application added to OS2::REXX.
335bd836 336 README.os2 updated to reflect the current state of Perl.
d88df687 337
c4e0013e 338pre 5.7.2:
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339 aout build: kid bootstrap_* were not associated with XS.
340 bldlevel did not contain enough info.
341 extLibpath* was failing on the call of the second type.
342 Configure defines flushNULL now (EMX -Zomf bug broke autodetection).
343 Configure did not find SIGBREAK.
344 extLibpath supports LIBSTRICT, better error detection.
345 crypt() used if present in -lcrypt or -lufc.
346 dumb getpw*(), getgr*() etc. supported; as in EMX, but if no
347 $ENV{PW_PASSWD}, the passwd field contains a string which
348 cannot be returned by crypt() (for security reasons).
349 The unwound recursion in detecting executable by script was
350 using static buffers. Thus system('pod2text') would fail if the
351 current directory contained an empty file named 'perl'.
352 Put ordinals in the base DLL.
353 Enable EXE-compression.
354 Load time (ms): Without /e:2: 70.6; With /e:2: 75.3; Lxlite: 62.8
355 Size drops from 750K to 627K, with lxlite to 515K.
356 lxlite /c:max gives 488K, but dumps core in t/TEST
357 os2ish.h defines SYSLOG constants ==> Sys::Syslog works.
358 Corrected warnings related to OS/2 code.
359 At one place = was put instead of ==.
360 Setting $^E should work.
361 Force "SYS0dddd=0xbar: " to error messages and to dlerror().
362 ($^E == 2 printed SYS0002 itself, but 110 did not.)
363 $OS2::nsyserror=0 switches off forcing SYSdddd on $^E.
364 perl_.exe does not require PM dlls any more (symbols resolved at
365 runtime on the as needed basis).
366 OS2::Process:
367 get/set: term size; codepages; screen's cursor; screen's contents
368 reliable session name setting;
369 process's parent pid, and the session id;
370 switching to and enumeration of sessions
371 window hierarchy inspection
372 post a message to a window
373 More robust getpriority() on older Warps.
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374
375 New C APIs for runtime loading of entry points from DLLs
376 (useful for entry points not present on older versions of
377 OS/2, or with DLLs not present on floppy-boot stripped down
378 setups): CallORD(), DeclFuncByORD(), DeclVoidFuncByORD(),
379 DeclOSFuncByORD(), DeclWinFuncByORD(), AssignFuncPByORD().
380
381pre 5.7.3:
382 Testing with PERL_TEST_NOVREXX=1 in environment makes tests
383 noninteractive (VREXX test requires pressing a button on a dialog).
384
385 New (ugly and voodooish) hack to work around a bug in EMX
386 runtime architecture:
387
388 EMX.DLL is *not* initialized from its _DLL_InitTerm()
389 routine, but the initialization is postponed until
390 immediately before main() is called by the principal
391 executable (may be the initialization also happens during
392 InitTerm of -Zso -Zsys DLLs?). The only reason I can see is
393 to postpone the initialization until the "layout" structure
394 is available, so the type of the executable is known.
395 [Instead, one should have broken the initialization into two
396 steps, with no-layout-known initialization ASAP, and the
397 finishing touch done when "layout" is known.]
398
399 It is due to this hack that -Zsys, -Zso etc. are needed so
400 often.
401
402 If during initialization of the Perl runtime environment we
403 discover that EMX environment is not set up completely, this
404 can be because of either our DLL being called from an
405 uncompatible flavor of EMX executable, or from an
406 unrelated-to-EMX.DLL (e.g., -Zsys or compiled with a
407 different compiler) executable. In the first case only the
408 CRTL is not completely initialized, in the other case
409 EMX.DLL may be not initialized too.
410
411 We detect which of these two situations takes place, then
412 explicitly call the initialization entry points of EMX.DLL
413 and of CRT. The large caveat is that the init-entry point
414 of EMX.DLL also moves the stack pointer (another defect of
415 EMX architecture, the init() and
416 set_exception_handlers_on_stack() entry points should have
417 been separated). Thus we need some inline-assembler to
418 compensate for this, and need to remove the installed
419 exception handler - it is useless anyway, since exception
420 handlers need to be on the stack. [This one is on the
421 stack, but will be overwritten on exit from the function.]
422
423 We also install an extra hack to run our atexit() handlers
424 on termination of the process (since the principal
425 executable does not know about *this* CRTL, we need to do it
426 ourselves - and longjmp() out of the chain of exception
427 handlers at a proper moment :-().
428
429 The net result: Perl DLL can be now used with an arbitrary
430 application. PERLREXX DLL is provided which makes Perl usable
431 from any REXX-enabled application.
432
433 New test targets added to test how well Perl DLL runs with
434 different flavors of executables (see all_harness etc). To
435 avoid waiting for the user button press, run with env
436 PERL_TEST_NOVREXX=1.
437
438 Another hack: on init of Perl runtime environment, the
439 executable is tested for being an aout EMX executable. The
440 test is the same done by gdb, so although this test is very
441 voodoo, it should be pretty robust (the beginning of the
442 executable code - at 0x10000 - is tested for a known bit
443 pattern). The result is used to set $OS2::can_fork, which is
444 eventually used to set $Config::Config{can_fork}.
445
446 REXX::eval_REXX() made reenterable. ADDRESS PERLEVAL
447 available for the run REXX code. PERLLASTERROR available.
448
449 A .map file is created for the .dll. Now easier to debug the
450 failures which do not happen with a debugging executable.
451
452 Duplicate libperl.lib as perl.lib etc. to make Embed happier.
453
454 File::Spec better adjusted to OS/2 (still does not support aa:/dir/).
455
456 New module OS::Process::Const with necessary constants for the
457 Perl calls which mimic OS/2 API calls.
458
459After @14577:
460 $Config{pager} better (but needs work in the binary installer!).
461
25417810 462 New API: OS2::DLLname([type], [\&sub])
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463
464 New OS2::Process APIs:
465
466 process_hwnd winTitle_set winTitle swTitle_set bothTitle_set
467 hWindowPos hWindowPos_set DesktopWindow
468 ActiveWindow_set
469 EnableWindow EnableWindowUpdate IsWindowEnabled
470 IsWindowVisible IsWindowShowing WindowPtr WindowULong
471 WindowUShort SetWindowBits SetWindowPtr
472 SetWindowULong
473 SetWindowUShort MPFROMSHORT MPVOID MPFROMCHAR
474 MPFROM2SHORT
475 MPFROMSH2CH MPFROMLONG
476
477 OS::Process::Const symbols exportable from OS::Process too.
478
479 OS::Process: prototypes on subroutines which do not naturally
480 take "vectors" as arguments (not backwards compatible!).
481
482 New C API: SaveCroakWinError(), WinError_2_Perl_rc,
483 DeclWinFuncByORD_CACHE(), DeclWinFuncByORD_CACHE_survive(),
484 DeclWinFuncByORD_CACHE_resetError_survive(),
485 DeclWinFunc_CACHE(), DeclWinFunc_CACHE_resetError(),
486 DeclWinFunc_CACHE_survive(),
487 DeclWinFunc_CACHE_resetError_survive(); many new OS2 entry
488 points conveniently available via wrappers which will do the
489 necessary run-time dynalinking.
490
491After @15047:
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492 makes PerlIO preserve the binary/text mode of filehandles
493 chosen by CRT library. (However, TTY handles still are not
494 clean, since switching them to TERMIO mode and back changes
495 the NL translation law at runtime, and PerlIO level does not
496 know this.)
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497
498After @18156:
499 mkdir() rmdir() tolerate trailing slashes.
500 "localized" morphing to PM when already morphed would unmorph at end.
501 Convert \n to \r\n in REXX commands (Classic REXX would allow \r and
502 \r\n, but not \n as line-ends).
503
504After @19053:
505 Better detection of OS/2 in Configure scripts (if c:/ is not readable).
506 Better Configure support for \\ inside cpp-emited # lineno "filename".
507 Export pthread-support functions from threaded DLL.
508 [older change] If perl5.def file is present, the new perl5.def has
509 compatible ordinals.
510 OS/2 code compiles with threads enabled; much more robust pthreads
511 emulation (but some statics still present); survives fork().
512 New attributes supported with [f]stat() and chmod()
513 archived is 0x1000000 = 0100000000
514 hidden is 0x2000000 = 0200000000
515 system is 0x4000000 = 0400000000
516 If extra flag 0x8000000 = 01000000000 is missing during
517 chmod(), these 3 flags are ignored; this extra flag
518 is set in the result of stat() [this provides backward
519 compatibility, as well as transparency of stat()/
520 chmod() supporting DOSISH].
521 OS/2-specific modules use XSLoader now.
522 Remove DLLs manually after failing build (link386 would not?!).
523 Special-case stat()ing "/dev/nul" and "/dev/null" too.
524 Update dlopen() and friends: preserve i387 flags, better error messages,
525 support name==NULL (load for "this" DLL);
526 OS2::DLL does not eval() generated functions, uses closes instead;
527 new method wrapper_REXX() for DLL objects.
528
529After @19774:
530 Use common typemap for OS2:: modules.
531 New test file os2/perlrexx.cmd (should be run manually; does not it
532 exit too early???).
533 Export fork_with_resources(), croak_with_os2error() from DLL.
534 usleep() availability put in %Config{}.
535 Combine most (but not all!) statics into one struct.
536 New load-on-demand C functions
537 Dos32QueryHeaderInfo
538 DosTmrQueryFreq
539 DosTmrQueryTime
540 WinQueryActiveDesktopPathname
541 WinInvalidateRect
542 WinCreateFrameControl
543 WinQueryClipbrdFmtInfo
544 WinQueryClipbrdOwner
545 WinQueryClipbrdViewer
546 WinQueryClipbrdData
547 WinOpenClipbrd
548 WinCloseClipbrd
549 WinSetClipbrdData
550 WinSetClipbrdOwner
551 WinSetClipbrdViewer
552 WinEnumClipbrdFmts
553 WinEmptyClipbrd
554 WinAddAtom
555 WinFindAtom
556 WinDeleteAtom
557 WinQueryAtomUsage
558 WinQueryAtomName
559 WinQueryAtomLength
560 WinQuerySystemAtomTable
561 WinCreateAtomTable
562 WinDestroyAtomTable
563 WinOpenWindowDC
564 DevOpenDC
565 DevQueryCaps
566 DevCloseDC
567 WinMessageBox
568 WinMessageBox2
569 WinQuerySysValue
570 WinSetSysValue
571 WinAlarm
572 WinFlashWindow
573 WinLoadPointer
574 WinQuerySysPointer
575 Check "\\SEM32\\PMDRAG.SEM" before loading PM-specific DLLs.
576 Handling of system {realname} was not correct in presence of
577 exe-type deduction, #!-emulation etc.
578 Use optimized PUSHTARG etc. XSUB convention.
579 $^E stringification contains PMERR_INVALID_HWND, PMERR_INVALID_HMQ,
580 PMERR_CALL_FROM_WRONG_THREAD, PMERR_NO_MSG_QUEUE,
581 PMERR_NOT_IN_A_PM_SESSION if these errors are not in .MSG file
582 (at least on Warp3fp42).
583 PERLLIB_PREFIX augmented by PERLLIB_582_PREFIX, PERLLIB_58_PREFIX,
584 PERLLIB_5_PREFIX (example for 5.8.2, the first one present is
585 considered).
586 New flag bit 0x2 for OS2::MorphPM(): immediately unmorph after creation
587 of message queue.
588 (De)Registring MQ preserves i386 flags.
589 When die()ing inside OS2:: API, include $^E in the message.
590 New function OS2::Timer(): returns Tmr-timer ticks (about 1MHz) since
591 start of OS/2, converted to number of seconds (keep in mind
592 that this timer uses a different crystal than the real-time
593 clock; thus these values have only weak relationship to the
594 wall clock time; behaviour with APM on is not defined).
595 New function OS2::DevCap() [XXX Wrong usage message!!!]
596 Usage: OS2::DevCap([WHAT, [HOW=0]]); the default for WHAT is
597 the memory device context, WHAT should be a device context
598 (as integer) if HOW==0 and a window handle (as integer) if
599 HOW==1. Returns a hash with keys
600 FAMILY IO_CAPS TECHNOLOGY DRIVER_VERSION WIDTH HEIGHT
601 WIDTH_IN_CHARS HEIGHT_IN_CHARS HORIZONTAL_RESOLUTION
602 VERTICAL_RESOLUTION CHAR_WIDTH CHAR_HEIGHT
603 SMALL_CHAR_WIDTH SMALL_CHAR_HEIGHT COLORS COLOR_PLANES
604 COLOR_BITCOUNT COLOR_TABLE_SUPPORT MOUSE_BUTTONS
605 FOREGROUND_MIX_SUPPORT BACKGROUND_MIX_SUPPORT
606 VIO_LOADABLE_FONTS WINDOW_BYTE_ALIGNMENT BITMAP_FORMATS
607 RASTER_CAPS MARKER_HEIGHT MARKER_WIDTH DEVICE_FONTS
608 GRAPHICS_SUBSET GRAPHICS_VERSION GRAPHICS_VECTOR_SUBSET
609 DEVICE_WINDOWING ADDITIONAL_GRAPHICS PHYS_COLORS
610 COLOR_INDEX GRAPHICS_CHAR_WIDTH GRAPHICS_CHAR_HEIGHT
611 HORIZONTAL_FONT_RES VERTICAL_FONT_RES DEVICE_FONT_SIM
612 LINEWIDTH_THICK DEVICE_POLYSET_POINTS
613 New function OS2::SysValues(which = -1, hwndDesktop = HWND_DESKTOP).
614 If which != -1, returns the correspondg SysValue. Otherwise
615 returns a hash with keys:
616 SWAPBUTTON DBLCLKTIME CXDBLCLK CYDBLCLK
617 CXSIZEBORDER CYSIZEBORDER ALARM 7 8 CURSORRATE
618 FIRSTSCROLLRATE SCROLLRATE NUMBEREDLISTS WARNINGFREQ
619 NOTEFREQ ERRORFREQ WARNINGDURATION NOTEDURATION
620 ERRORDURATION 19 CXSCREEN CYSCREEN CXVSCROLL CYHSCROLL
621 CYVSCROLLARROW CXHSCROLLARROW CXBORDER CYBORDER
622 CXDLGFRAME CYDLGFRAME CYTITLEBAR CYVSLIDER CXHSLIDER
623 CXMINMAXBUTTON CYMINMAXBUTTON CYMENU
624 CXFULLSCREEN CYFULLSCREEN CXICON CYICON
625 CXPOINTER CYPOINTER DEBUG CPOINTERBUTTONS POINTERLEVEL
626 CURSORLEVEL TRACKRECTLEVEL CTIMERS MOUSEPRESENT
627 CXALIGN CYALIGN
628 DESKTOPWORKAREAYTOP DESKTOPWORKAREAYBOTTOM
629 DESKTOPWORKAREAXRIGHT DESKTOPWORKAREAXLEFT 55
630 NOTRESERVED EXTRAKEYBEEP SETLIGHTS INSERTMODE 60 61 62 63
631 MENUROLLDOWNDELAY MENUROLLUPDELAY ALTMNEMONIC
632 TASKLISTMOUSEACCESS CXICONTEXTWIDTH CICONTEXTLINES
633 CHORDTIME CXCHORD CYCHORD CXMOTIONSTART CYMOTIONSTART
634 BEGINDRAG ENDDRAG SINGLESELECT OPEN CONTEXTMENU CONTEXTHELP
635 TEXTEDIT BEGINSELECT ENDSELECT BEGINDRAGKB ENDDRAGKB
636 SELECTKB OPENKB CONTEXTMENUKB CONTEXTHELPKB TEXTEDITKB
637 BEGINSELECTKB ENDSELECTKB ANIMATION ANIMATIONSPEED
638 MONOICONS KBDALTERED PRINTSCREEN /* 97, the last one on one of the DDK header */
639 LOCKSTARTINPUT DYNAMICDRAG 100 101 102 103 104 105 106 107
640 New function OS2::SysValues_set(which, val, hwndDesktop = HWND_DESKTOP).
641 Support new keys NUMPROCESSORS MAXHPRMEM MAXHSHMEM MAXPROCESSES
642 VIRTUALADDRESSLIMIT INT10ENABLE from OS2::SysInfo(); support
643 up to 10 unnamed values after the last named one.
644 New function OS2::SysInfoFor(id[,count=1]). [Wrong usage message!!!]
645 New function OS2::Beep(freq = 440, ms = 100).
646 New flags mod_name_C_function = 0x100, mod_name_HMODULE = 0x200 in
647 addition to old mod_name_handle = 0, mod_name_shortname = 1,
648 mod_name_full = 2 for OS2::DLLname(flag, cv); use an address
649 (as integer) or module handle instead of cv.
650 New function OS2::_headerInfo(req,size[,handle,[offset]]).
651 New function OS2::libPath(); returns the value of LIBPATH.
652 New function OS2::mytype(which=0) to query current process type:
653 0: type immediately after startup or last fork();
654 1: type immediately after startup;
655 2: type before the first morphing;
656 3: type as set now in the header.
657 New function OS2::mytype_set(type);
658 New function OS2::incrMaxFHandles(delta = 0); returns updated value
659 for the possible number of open file descriptors.
660 Make check_emx_runtime() thread-safe.
661 Fix float-to-string conversion in the range .0001..0.1 (would return
662 in exponential notation, per gcvt()).
663 Make fork(): a) preserve i387 flags;
664 b) preverve the dynamically loaded (system) DLLs;
665 c) preserve morphed status;
666 Make sleep() work with time > 0xffffffff/1000.
667 Implement usleep() via _sleep2(); make select() with num_files==0
668 thread-safe (via calling DosSleep()).
669 OS2::Process::Const() manages (MB|MBID|CF|CFI|SPTR)_.* constants too.
670 New (exported) functions from OS2::Process (some undocumented???):
671 process_codepage_set
672 TopLevel
673 FocusWindow_set_keep_Zorder
674 ActiveDesktopPathname
675 InvalidateRect
676 CreateFrameControl
677 ClipbrdFmtInfo
678 ClipbrdOwner
679 ClipbrdViewer
680 ClipbrdData
681 OpenClipbrd
682 CloseClipbrd
683 ClipbrdData_set
684 ClipbrdOwner_set
685 ClipbrdViewer_set
686 EnumClipbrdFmts
687 EmptyClipbrd
688 AddAtom
689 FindAtom
690 DeleteAtom
691 AtomUsage
692 AtomName
693 AtomLength
694 SystemAtomTable
695 CreateAtomTable
696 DestroyAtomTable
697 _ClipbrdData_set
698 ClipbrdText
699 ClipbrdText_set
700 _MessageBox
701 MessageBox
702 _MessageBox2
703 MessageBox2
704 LoadPointer
705 SysPointer
706 Alarm
707 FlashWindow
708 Do not use AUTOLOAD in OS2::DLL; moved to OS2::DLL::dll.
709 New method OS2::DLL->module() (to replace botched ->new() method).
710 New functions call20(), call20_p(), call20_rp3(), call20_rp3_p(),
711 call20_Dos(), call20_Win(), call20_Win_0OK(),
712 call20_Win_0OK_survive() in OS2::DLL to call C functions via
713 pointers.
714
715After @20218:
716 select() workaround broke build of x2p.
717 New OS2::Process (exported, undocumented) functions:
718 kbdChar
719 kbdhChar
720 kbdStatus
721 _kbdStatus_set
722 kbdhStatus
723 kbdhStatus_set
724 vioConfig
725 viohConfig
726 vioMode
727 viohMode
728 viohMode_set
729 _vioMode_set
730 _vioState
731 _vioState_set
732 vioFont
733 vioFont_set
734 Make CheckOS2Error() macro return the error code.
735 New dynaloaded entry point DosReplaceModule().
736 New function OS2::replaceModule(target [, source [, backup]]).
737
738After @21211:
739 Make Cwd::sys_abspath() default to '.' and taint the result.
740 Fix os2_process*.t to work if the default for VIO windows is maximized.
741 Fix to avoid non-existing PIDs for get_sysinfo() broke pid==0.
742 Restore default mode for pipes to be TEXT mode.
743
744After @21379:
745 New OS2::Process functions: __term_mirror_screen() __term_mirror()
746 io_term().
747 Fix a.out build: special-case thread::shared, pick up all the build
748 static libraries, not only those for top-level modules.
749 Fix DLLname() test to work with the static build too.
750 New dynaloaded entry point RexxRegisterSubcomExe(); make OS2::REXX use
751 it so it is not linked with REXX*.DLLs any more.
752 If system "./foo", and empty "./foo" and "./foo.exe" exist,
753 argv[0] would be set to junk.
754 Make perl2cmd convert .pl files and keep the command-line switches.
755 Make XSLoader and Perl-specific parts of DynaLoader to die with static
756 builds (new variable $OS2::is_static used);
757 Move perlmain.obj to the DLL; export main() as dll_perlmain(); create
758 a library libperl_dllmain to translate the exported symbol
759 back to main(); link the executables with this library instead
760 of perlmain.obj.
761 Add /li to link386's options (line number info in the .map file).
762 Another break from fix to avoid non-existing PIDs for get_sysinfo().
763
764After @21574:
765 Update import libraries when perl version changes (e.g., due to rsync).
766 New exported symbols dup() and dup2() [the wrappers have workaround
767 for off-by-one error + double fault in the pre-Nov2003 kernels
768 when a (wrong) filedescriptor which is limit+1 is dup()ed].
769 Enable disabling fd via a FILE* (to avoid close() during fclose()).
770 New dynaloaded entry point DosPerfSysCall().
771 New function OS2::perfSysCall(cmd = CMD_KI_RDCNT, ulParm1= 0,
772 ulParm2= 0, ulParm3= 0); when called
773 with cmd == CMD_KI_RDCNT = 0x63 and no other parameters,
774 returns: in the scalar context: the tick count of processor 1;
775 in the list context: 4 tick counts per processor:
776 total/idle/busy/interrupt-time.
777 with cmd == CMD_KI_GETQTY == 0x41 and no other parameters,
778 returns the CPU count. Currently in other cases the return
779 is void.
780 New executables perl___<number> generated with decreased stack size
781 (good when virtual memory is low; e.g. floppy boot).