such as MMK or MMS may generate a filename in all upper case even on an
ODS-5 volume. If this filename is later retrieved by a Perl script or
module in a case preserving environment, that upper case name may not
-match the mixed-case or lower-case expections of the Perl code. Your
+match the mixed-case or lower-case exceptions of the Perl code. Your
best bet is to follow an all-or-nothing approach to case preservation:
either don't use it at all, or make sure your entire toolchain and
application environment support and use it.
OpenVMS Alpha v7.3-1 and later and all version of OpenVMS I64 support
case sensitivity as a process setting (see C<SET PROCESS
-/CASE_LOOKUP=SENSITIVE>). Perl does not currently suppport case
+/CASE_LOOKUP=SENSITIVE>). Perl does not currently support case
sensitivity on VMS, but it may in the future, so Perl programs should
use the C<< File::Spec->case_tolerant >> method to determine the state, and
not the C<$^O> variable.
Perl will wait for the subprocess to complete before continuing.
The mailbox (MBX) that perl can create to communicate with a pipe
-defaults to a buffer size of 512. The default buffer size is
-adjustable via the logical name PERL_MBX_SIZE provided that the
-value falls between 128 and the SYSGEN parameter MAXBUF inclusive.
-For example, to double the MBX size from the default within
-a Perl program, use C<$ENV{'PERL_MBX_SIZE'} = 1024;> and then
-open and use pipe constructs. An alternative would be to issue
-the command:
+defaults to a buffer size of 8192 on 64-bit systems, 512 on VAX. The
+default buffer size is adjustable via the logical name PERL_MBX_SIZE
+provided that the value falls between 128 and the SYSGEN parameter
+MAXBUF inclusive. For example, to set the mailbox size to 32767 use
+C<$ENV{'PERL_MBX_SIZE'} = 32767;> and then open and use pipe constructs.
+An alternative would be to issue the command:
- $ Define PERL_MBX_SIZE 1024
+ $ Define PERL_MBX_SIZE 32767
before running your wide record pipe program. A larger value may
improve performance at the expense of the BYTLM UAF quota.
This allows the programmer to look at the execution stack and variables to
find out the cause of the exception. As the debugger is being invoked as
the Perl interpreter is about to do a fatal exit, continuing the execution
-in debug mode is usally not practical.
+in debug mode is usually not practical.
Starting Perl in the VMS debugger may change the program execution
profile in a way that such problems are not reproduced.
caller, chdir, chmod, chown, chomp, chop, chr,
close, closedir, cos, crypt*, defined, delete, die, do, dump*,
each, endgrent, endpwent, eof, eval, exec*, exists, exit, exp,
- fileno, flock getc, getgrent*, getgrgid*, getgrnam, getlogin, getppid,
- getpwent*, getpwnam*, getpwuid*, glob, gmtime*, goto,
+ fileno, flock getc, getgrent*, getgrgid*, getgrnam, getlogin,
+ getppid, getpwent*, getpwnam*, getpwuid*, glob, gmtime*, goto,
grep, hex, ioctl, import, index, int, join, keys, kill*,
- last, lc, lcfirst, lchown*, length, link*, local, localtime, log, lstat, m//,
- map, mkdir, my, next, no, oct, open, opendir, ord, pack,
- pipe, pop, pos, print, printf, push, q//, qq//, qw//,
- qx//*, quotemeta, rand, read, readdir, readlink*, redo, ref, rename,
- require, reset, return, reverse, rewinddir, rindex,
+ last, lc, lcfirst, lchown*, length, link*, local, localtime, log,
+ lstat, m//, map, mkdir, my, next, no, oct, open, opendir, ord,
+ pack, pipe, pop, pos, print, printf, push, q//, qq//, qw//,
+ qx//*, quotemeta, rand, read, readdir, readlink*, redo, ref,
+ rename, require, reset, return, reverse, rewinddir, rindex,
rmdir, s///, scalar, seek, seekdir, select(internal),
select (system call)*, setgrent, setpwent, shift, sin, sleep,
socketpair, sort, splice, split, sprintf, sqrt, srand, stat,
See L</"$?"> for a description of the encoding of the Unix value to
produce a native VMS status containing it.
-
=item dump
Rather than causing Perl to abort and dump core, the C<dump>
there is no difference between "user time" and "system" time
under VMS, and the time accumulated by a subprocess may or may
not appear separately in the "child time" field, depending on
-whether L<times> keeps track of subprocesses separately. Note
+whether C<times()> keeps track of subprocesses separately. Note
especially that the VAXCRTL (at least) keeps track only of
-subprocesses spawned using L<fork> and L<exec>; it will not
-accumulate the times of subprocesses spawned via pipes, L<system>,
+subprocesses spawned using C<fork()> and C<exec()>; it will not
+accumulate the times of subprocesses spawned via pipes, C<system()>,
or backticks.
=item unlink LIST
process-permanent files, such as C<SYS$INPUT> and C<SYS$OUTPUT>.
The translations for these logical names are prepended with a
two-byte binary value (0x1B 0x00) that needs to be stripped off
-if you wantto use it. (In previous versions of Perl it wasn't
+if you want to use it. (In previous versions of Perl it wasn't
possible to get the values of these logical names, as the null
byte acted as an end-of-string marker)
improvements in the POSIX exit handling.
In general, with C<PERL_VMS_POSIX_EXIT> enabled, more detailed information
-will be availble in the exit status for DCL scripts or other native VMS tools,
+will be available in the exit status for DCL scripts or other native VMS tools,
and will give the expected information for Posix programs. It has not been
made the default in order to preserve backward compatibility.
https://perl5.git.perl.org / perl5.git / blobdiff