Mercurial > octave
view libinterp/parse-tree/pt-vm-eval.cc @ 31167:92d897a2c1c3
New runtime function __enable_vm_eval__() to control use of VM evaluator.
* libinterp/parse-tree/pt-vm-eval.cc (F__enable_vm_eval__): New file. New
DEFUN for __enable_vm_eval__ protected by #ifdef on configuration variable
OCTAVE_ENABLE_VM_EVALUATOR.
* libinterp/parse-tree/module.mk: Add pt-vm-eval.cc to build system.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 29 Jul 2022 10:41:22 -0700 |
parents | |
children | e88a07dec498 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include "defun.h" #include "variables.h" OCTAVE_NAMESPACE_BEGIN // If TRUE, use VM evaluator rather than tree walker. static bool V__enable_vm_eval__ = false; DEFUN (__enable_vm_eval__, args, nargout, doc: /* -*- texinfo -*- @deftypefn {} {@var{val} =} __enable_vm_eval__ () @deftypefnx {} {@var{old_val} =} __enable_vm_eval__ (@var{new_val}) @deftypefnx {} {@var{old_val} =} __enable_vm_eval__ (@var{new_val}, "local") Query or set whether Octave uses a virtual machine (VM) for evaluation of parsed statements. The default value is false. When false, Octave uses a traditional tree walker to evaluate statements parsed from m-code. When true, Octave translates parsed statements to an intermediate representation that is then evaluated by a virtual machine. When called from inside a function with the @qcode{"local"} option, the setting is changed locally for the function and any subroutines it calls. The original setting is restored when exiting the function. @end deftypefn */) { #if defined (OCTAVE_ENABLE_VM_EVALUATOR) return set_internal_variable (V__enable_vm_eval__, args, nargout, "__enable_vm_eval__"); #else octave_unused_parameter (args); err_disabled_feature ("vm-evaluator", "using a Virtual Machine for statement evaluation"); #endif } OCTAVE_NAMESPACE_END