Mercurial > octave
view libinterp/corefcn/nproc.cc @ 27130:396d17dcfb9f
don't include error.h in ov-base.h
* ov-base.h: Don't include error.h.
* oct-handle.h, stack-frame.h, cdef-class.h, cdef-object.h,
cdef-property.h, nproc.cc, strfind.cc, syminfo.cc:
Include error.h in header files that need it.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 30 May 2019 10:23:44 +0000 |
parents | 0ee0bb5eb381 |
children | b442ec6dda5c |
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/* Copyright (C) 2012-2019 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 "nproc-wrapper.h" #include "defun.h" #include "error.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_OVERRIDABLE; 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 that "overridable" is the default %!assert (nproc ("overridable"), nproc ()) %!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") */