/ 
TUI-Vision-2.000_003
/ TUI::Memory::Util

NAME

TUI::Memory::Util - memory-related utility functions for Turbo Vision

SYNOPSIS

use TUI::Memory::Util qw(lowMemory);

if (lowMemory()) {
  messageBox(
    'Low memory condition detected',
    mfWarning | mfOkButton
  );
}

DESCRIPTION

TUI::Memory::Util provides low-level utility functions related to memory management within the Turbo Vision framework.

The functions in this module expose global state maintained by the runtime and are intended to support defensive behavior in views and application-level logic when system resources become constrained.

This module is purely functional and does not define any classes or objects.

FUNCTIONS

lowMemory

my $bool = lowMemory();

Returns true if the application has entered a low-memory condition.

A low-memory condition indicates that internal safety reserves have been used and that further memory allocation may fail or behave unpredictably.

This function is typically consulted before creating new views or allocating additional resources.

USAGE NOTES

The low-memory state is maintained globally by the framework.

Calling lowMemory does not modify application state. It is intended as a query function only.

Application code may use this information to display warnings, reject new operations, or gracefully reduce resource usage.

COMPATIBILITY NOTES

This module follows the Turbo Vision C++ memory model and preserves its behavioral semantics.

Internally, the original implementation relied on a reserved safety area to detect memory exhaustion conditions. This Perl port retains the same logical signal while relying on Perl-native memory management.

The observable behavior of lowMemory matches the original model, while the underlying memory handling is adapted to the Perl runtime environment.

SEE ALSO

TUI::App::Program, TUI::App::Application, TUI::Dialogs::Dialog

AUTHORS

Borland International (original Turbo Vision design)
J. Schneider <brickpool@cpan.org> (Perl implementation and maintenance)

COPYRIGHT AND LICENSE

Copyright (c) 1990-1994, 1997 by Borland International

Copyright (c) 2021-2026 the "AUTHORS" as listed above.

This software is licensed under the MIT license (see the LICENSE file, which is part of the distribution).