Mercurial > octave
view libinterp/corefcn/nproc.cc @ 24760:b784d68f7c44
fix printing of logical values (bug #53160)
* pr-output.h, pr-output.cc (make_format): Provide specialization for
boolNDArray objects.
(octave_print_internal): Define more consistently.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 14 Feb 2018 23:28:40 -0500 |
parents | 194eb4bd202b |
children | 6652d3823428 |
line wrap: on
line source
/* Copyright (C) 2012-2017 Iain Murray 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 "nproc-wrapper.h" DEFUN (nproc, args, , doc: /* -*- texinfo -*- @deftypefn {} {} nproc () @deftypefnx {} {} nproc (@var{query}) Return the current number of available processors. If called with the optional argument @var{query}, modify how processors are counted as follows: @table @code @item all total number of processors. @item current processors available to the current process. @item overridable same as @code{current}, but overridable through the @w{@env{OMP_NUM_THREADS}} environment variable. @end table @end deftypefn */) { int nargin = args.length (); if (nargin > 1) print_usage (); octave_nproc_query query = OCTAVE_NPROC_CURRENT; if (nargin == 1) { std::string arg = args(0).string_value (); std::transform (arg.begin (), arg.end (), arg.begin (), tolower); if (arg == "all") query = OCTAVE_NPROC_ALL; else if (arg == "current") query = OCTAVE_NPROC_CURRENT; else if (arg == "overridable") query = OCTAVE_NPROC_CURRENT_OVERRIDABLE; else error ("nproc: invalid value for QUERY"); } return ovl (octave_num_processors_wrapper (query)); } /* ## Must always report at least 1 cpu available %!assert (nproc () >= 1) %!assert (nproc ("all") >= 1) %!assert (nproc ("current") >= 1) %!test %! c = nproc ("current"); %! unwind_protect %! old_val = getenv ("OMP_NUM_THREADS"); %! new_val = c + 1; %! setenv ("OMP_NUM_THREADS", num2str (new_val)); %! assert (nproc ("overridable"), new_val); %! unwind_protect_cleanup %! if (! isempty (old_val)) %! setenv ("OMP_NUM_THREADS", old_val); %! else %! unsetenv ("OMP_NUM_THREADS"); %! endif %! end_unwind_protect %!error nproc ("no_valid_option") */