diff options
Diffstat (limited to 'vms/perlvms.pod')
| -rw-r--r-- | vms/perlvms.pod | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/vms/perlvms.pod b/vms/perlvms.pod index 080c03d335..c09e047169 100644 --- a/vms/perlvms.pod +++ b/vms/perlvms.pod @@ -326,18 +326,23 @@ The following functions were not implemented in the VMS port, and calling them produces a fatal error (usually) or undefined behavior (rarely, we hope): - chroot, dbmclose, dbmopen, fcntl, flock, + chroot, dbmclose, dbmopen, flock, getpgrp, getppid, getpriority, getgrent, getgrgid, getgrnam, setgrent, endgrent, ioctl, link, lstat, msgctl, msgget, msgsend, msgrcv, readlink, semctl, semget, semop, setpgrp, setpriority, shmctl, shmget, shmread, shmwrite, socketpair, symlink, syscall -The following functions are available on Perls compiled with Dec C 5.2 or -greater and running VMS 7.0 or greater +The following functions are available on Perls compiled with Dec C +5.2 or greater and running VMS 7.0 or greater: truncate +The following functions are available on Perls built on VMS 7.2 or +greater: + + fcntl (without locking) + The following functions may or may not be implemented, depending on what type of socket support you've built into your copy of Perl: @@ -604,7 +609,7 @@ or backticks. C<unlink> will delete the highest version of a file only; in order to delete all versions, you need to say - 1 while (unlink LIST); + 1 while unlink LIST; You may need to make this change to scripts written for a Unix system which expect that after a call to C<unlink>, @@ -647,14 +652,19 @@ time of the file (VMS revision date). If PID is a subprocess started by a piped C<open()> (see L<open>), C<waitpid> will wait for that subprocess, and return its final -status value. If PID is a subprocess created in some other way -(e.g. SPAWNed before Perl was invoked), or is not a subprocess of -the current process, C<waitpid> will check once per second whether -the process has completed, and when it has, will return 0. (If PID -specifies a process that isn't a subprocess of the current process, -and you invoked Perl with the C<-w> switch, a warning will be issued.) - -The FLAGS argument is ignored in all cases. +status value in C<$?>. If PID is a subprocess created in some other +way (e.g. SPAWNed before Perl was invoked), or is not a subprocess +of the current process, C<waitpid> will attempt to read from the +process's termination mailbox, making the final status available in +C<$?> when the process completes. If the process specified by PID +has no termination mailbox, C<waitpid> will simply check once per +second whether the process has completed, and return when it has. +(If PID specifies a process that isn't a subprocess of the current +process, and you invoked Perl with the C<-w> switch, a warning will +be issued.) + +Returns PID on success, -1 on error. The FLAGS argument is ignored +in all cases. =back @@ -883,7 +893,7 @@ problems. =head1 Revision date -This document was last updated on 7-Aug-2001, for Perl 5, +This document was last updated on 2-Oct-2001, for Perl 5, patchlevel 8. =head1 AUTHOR |