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.)
projects / p5sagit/p5-mst-13.2.git / blobdiff