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Edit File : SysV.pm \| Size : 4.62 KB
################################################################################ # # Version 2.x, Copyright (C) 2007-2013, Marcus Holland-Moritz <mhx@cpan.org>. # Version 1.x, Copyright (C) 1997, Graham Barr <gbarr@pobox.com>. # # This program is free software; you can redistribute it and/or # modify it under the same terms as Perl itself. # ################################################################################ package IPC::SysV; use strict; use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $VERSION $AUTOLOAD); use Carp; use Config; require Exporter; @ISA = qw(Exporter); $VERSION = '2.07'; # To support new constants, just add them to @EXPORT_OK # and the C/XS code will be generated automagically. @EXPORT_OK = (qw( GETALL GETNCNT GETPID GETVAL GETZCNT IPC_ALLOC IPC_CREAT IPC_EXCL IPC_GETACL IPC_INFO IPC_LOCKED IPC_M IPC_NOERROR IPC_NOWAIT IPC_PRIVATE IPC_R IPC_RMID IPC_SET IPC_SETACL IPC_SETLABEL IPC_STAT IPC_W IPC_WANTED MSG_EXCEPT MSG_FWAIT MSG_INFO MSG_LOCKED MSG_MWAIT MSG_NOERROR MSG_QWAIT MSG_R MSG_RWAIT MSG_STAT MSG_W MSG_WAIT MSG_WWAIT SEM_A SEM_ALLOC SEM_DEST SEM_ERR SEM_INFO SEM_ORDER SEM_R SEM_STAT SEM_UNDO SETALL SETVAL SHMLBA SHM_A SHM_CLEAR SHM_COPY SHM_DCACHE SHM_DEST SHM_ECACHE SHM_FMAP SHM_HUGETLB SHM_ICACHE SHM_INFO SHM_INIT SHM_LOCK SHM_LOCKED SHM_MAP SHM_NORESERVE SHM_NOSWAP SHM_R SHM_RDONLY SHM_REMAP SHM_REMOVED SHM_RND SHM_SHARE_MMU SHM_SHATTR SHM_SIZE SHM_STAT SHM_UNLOCK SHM_W S_IRUSR S_IWUSR S_IXUSR S_IRWXU S_IRGRP S_IWGRP S_IXGRP S_IRWXG S_IROTH S_IWOTH S_IXOTH S_IRWXO ENOSPC ENOSYS ENOMEM EACCES ), qw( ftok shmat shmdt memread memwrite )); %EXPORT_TAGS = ( all => [@EXPORT, @EXPORT_OK], ); sub AUTOLOAD { my $constname = $AUTOLOAD; $constname =~ s/.:://; die "&IPC::SysV::_constant not defined" if $constname eq '_constant'; my ($error, $val) = _constant($constname); if ($error) { my (undef, $file, $line) = caller; die "$error at $file line $line.\n"; } { no strict 'refs'; $AUTOLOAD = sub { $val }; } goto &$AUTOLOAD; } BOOT_XS: { # If I inherit DynaLoader then I inherit AutoLoader and I DON'T WANT TO require DynaLoader; # DynaLoader calls dl_load_flags as a static method. *dl_load_flags = DynaLoader->can('dl_load_flags'); do { __PACKAGE__->can('bootstrap') \|\| \&DynaLoader::bootstrap }->(__PACKAGE__, $VERSION); } 1; __END__ =head1 NAME IPC::SysV - System V IPC constants and system calls =head1 SYNOPSIS use IPC::SysV qw(IPC_STAT IPC_PRIVATE); =head1 DESCRIPTION C<IPC::SysV> defines and conditionally exports all the constants defined in your system include files which are needed by the SysV IPC calls. Common ones include IPC_CREAT IPC_EXCL IPC_NOWAIT IPC_PRIVATE IPC_RMID IPC_SET IPC_STAT GETVAL SETVAL GETPID GETNCNT GETZCNT GETALL SETALL SEM_A SEM_R SEM_UNDO SHM_RDONLY SHM_RND SHMLBA and auxiliary ones S_IRUSR S_IWUSR S_IRWXU S_IRGRP S_IWGRP S_IRWXG S_IROTH S_IWOTH S_IRWXO but your system might have more. =over 4 =item ftok( PATH ) =item ftok( PATH, ID ) Return a key based on PATH and ID, which can be used as a key for C<msgget>, C<semget> and C<shmget>. See L<ftok(3)>. If ID is omitted, it defaults to C<1>. If a single character is given for ID, the numeric value of that character is used. =item shmat( ID, ADDR, FLAG ) Attach the shared memory segment identified by ID to the address space of the calling process. See L<shmat(2)>. ADDR should be C<undef> unless you really know what you're doing. =item shmdt( ADDR ) Detach the shared memory segment located at the address specified by ADDR from the address space of the calling process. See L<shmdt(2)>. =item memread( ADDR, VAR, POS, SIZE ) Reads SIZE bytes from a memory segment at ADDR starting at position POS. VAR must be a variable that will hold the data read. Returns true if successful, or false if there is an error. memread() taints the variable. =item memwrite( ADDR, STRING, POS, SIZE ) Writes SIZE bytes from STRING to a memory segment at ADDR starting at position POS. If STRING is too long, only SIZE bytes are used; if STRING is too short, nulls are written to fill out SIZE bytes. Returns true if successful, or false if there is an error. =back =head1 SEE ALSO L<IPC::Msg>, L<IPC::Semaphore>, L<IPC::SharedMem>, L<ftok(3)>, L<shmat(2)>, L<shmdt(2)> =head1 AUTHORS Graham Barr <gbarr@pobox.com>, Jarkko Hietaniemi <jhi@iki.fi>, Marcus Holland-Moritz <mhx@cpan.org> =head1 COPYRIGHT Version 2.x, Copyright (C) 2007-2013, Marcus Holland-Moritz. Version 1.x, Copyright (c) 1997, Graham Barr. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut Back

Edit File : SysV.pm | Size : 4.62 KB

################################################################################
#
#  Version 2.x, Copyright (C) 2007-2013, Marcus Holland-Moritz <mhx@cpan.org>.
#  Version 1.x, Copyright (C) 1997, Graham Barr <gbarr@pobox.com>.
#
#  This program is free software; you can redistribute it and/or
#  modify it under the same terms as Perl itself.
#
################################################################################

package IPC::SysV;

use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $VERSION $AUTOLOAD);
use Carp;
use Config;

require Exporter;
@ISA = qw(Exporter);

$VERSION = '2.07';

# To support new constants, just add them to @EXPORT_OK
# and the C/XS code will be generated automagically.
@EXPORT_OK = (qw(

GETALL GETNCNT GETPID GETVAL GETZCNT

IPC_ALLOC IPC_CREAT IPC_EXCL IPC_GETACL IPC_INFO IPC_LOCKED
  IPC_M IPC_NOERROR IPC_NOWAIT IPC_PRIVATE IPC_R IPC_RMID
  IPC_SET IPC_SETACL IPC_SETLABEL IPC_STAT IPC_W IPC_WANTED

MSG_EXCEPT MSG_FWAIT MSG_INFO MSG_LOCKED MSG_MWAIT MSG_NOERROR
  MSG_QWAIT MSG_R MSG_RWAIT MSG_STAT MSG_W MSG_WAIT MSG_WWAIT

SEM_A SEM_ALLOC SEM_DEST SEM_ERR SEM_INFO SEM_ORDER SEM_R
  SEM_STAT SEM_UNDO

SETALL SETVAL

SHMLBA

SHM_A SHM_CLEAR SHM_COPY SHM_DCACHE SHM_DEST SHM_ECACHE
  SHM_FMAP SHM_HUGETLB SHM_ICACHE SHM_INFO SHM_INIT SHM_LOCK
  SHM_LOCKED SHM_MAP SHM_NORESERVE SHM_NOSWAP SHM_R SHM_RDONLY
  SHM_REMAP SHM_REMOVED SHM_RND SHM_SHARE_MMU SHM_SHATTR
  SHM_SIZE SHM_STAT SHM_UNLOCK SHM_W

S_IRUSR S_IWUSR S_IXUSR S_IRWXU
  S_IRGRP S_IWGRP S_IXGRP S_IRWXG
  S_IROTH S_IWOTH S_IXOTH S_IRWXO

ENOSPC ENOSYS ENOMEM EACCES

), qw(

ftok shmat shmdt memread memwrite

));

%EXPORT_TAGS = (
  all => [@EXPORT, @EXPORT_OK],
);

sub AUTOLOAD
{
  my $constname = $AUTOLOAD;
  $constname =~ s/.*:://;
  die "&IPC::SysV::_constant not defined" if $constname eq '_constant';
  my ($error, $val) = _constant($constname);
  if ($error) {
    my (undef, $file, $line) = caller;
    die "$error at $file line $line.\n";
  }
  {
    no strict 'refs';
    *$AUTOLOAD = sub { $val };
  }
  goto &$AUTOLOAD;
}

BOOT_XS: {
  # If I inherit DynaLoader then I inherit AutoLoader and I DON'T WANT TO
  require DynaLoader;

# DynaLoader calls dl_load_flags as a static method.
  *dl_load_flags = DynaLoader->can('dl_load_flags');

do {
    __PACKAGE__->can('bootstrap') || \&DynaLoader::bootstrap
  }->(__PACKAGE__, $VERSION);
}

__END__

=head1 NAME

IPC::SysV - System V IPC constants and system calls

=head1 SYNOPSIS

use IPC::SysV qw(IPC_STAT IPC_PRIVATE);

=head1 DESCRIPTION

C<IPC::SysV> defines and conditionally exports all the constants
defined in your system include files which are needed by the SysV
IPC calls.  Common ones include

IPC_CREAT IPC_EXCL IPC_NOWAIT IPC_PRIVATE IPC_RMID IPC_SET IPC_STAT
  GETVAL SETVAL GETPID GETNCNT GETZCNT GETALL SETALL
  SEM_A SEM_R SEM_UNDO
  SHM_RDONLY SHM_RND SHMLBA

and auxiliary ones

S_IRUSR S_IWUSR S_IRWXU
  S_IRGRP S_IWGRP S_IRWXG
  S_IROTH S_IWOTH S_IRWXO

but your system might have more.

=over 4

=item ftok( PATH )

=item ftok( PATH, ID )

Return a key based on PATH and ID, which can be used as a key for
C<msgget>, C<semget> and C<shmget>. See L<ftok(3)>.

If ID is omitted, it defaults to C<1>. If a single character is
given for ID, the numeric value of that character is used.

=item shmat( ID, ADDR, FLAG )

Attach the shared memory segment identified by ID to the address
space of the calling process. See L<shmat(2)>.

ADDR should be C<undef> unless you really know what you're doing.

=item shmdt( ADDR )

Detach the shared memory segment located at the address specified
by ADDR from the address space of the calling process. See L<shmdt(2)>.

=item memread( ADDR, VAR, POS, SIZE )

Reads SIZE bytes from a memory segment at ADDR starting at position POS.
VAR must be a variable that will hold the data read. Returns true if
successful, or false if there is an error. memread() taints the variable.

=item memwrite( ADDR, STRING, POS, SIZE )

Writes SIZE bytes from STRING to a memory segment at ADDR starting at
position POS. If STRING is too long, only SIZE bytes are used; if STRING
is too short, nulls are written to fill out SIZE bytes. Returns true if
successful, or false if there is an error.

=back

=head1 SEE ALSO

L<IPC::Msg>, L<IPC::Semaphore>, L<IPC::SharedMem>, L<ftok(3)>, L<shmat(2)>, L<shmdt(2)>

=head1 AUTHORS

Graham Barr <gbarr@pobox.com>,
Jarkko Hietaniemi <jhi@iki.fi>,
Marcus Holland-Moritz <mhx@cpan.org>

=head1 COPYRIGHT

This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.

=cut

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