The C and C++ Include Header Files

/usr/include/c++/11/parallel/compiletime_settings.h


$ cat -n /usr/include/c++/11/parallel/compiletime_settings.h

     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2007-2021 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the terms
     7	// of the GNU General Public License as published by the Free Software
     8	// Foundation; either version 3, or (at your option) any later
     9	// version.
    10	
    11	// This library is distributed in the hope that it will be useful, but
    12	// WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14	// General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	/** @file parallel/compiletime_settings.h
    26	 *  @brief Defines on options concerning debugging and performance, at
    27	 *  compile-time.
    28	 *  This file is a GNU parallel extension to the Standard C++ Library.
    29	 */
    30	
    31	// Written by Johannes Singler.
    32	
    33	#include <cstdio>
    34	
    35	/** @brief Determine verbosity level of the parallel mode.
    36	 *  Level 1 prints a message each time a parallel-mode function is entered. */
    37	#define _GLIBCXX_VERBOSE_LEVEL 0
    38	
    39	/** @def _GLIBCXX_CALL
    40	 *  @brief Macro to produce log message when entering a function.
    41	 *  @param __n Input size.
    42	 *  @see _GLIBCXX_VERBOSE_LEVEL */
    43	#if (_GLIBCXX_VERBOSE_LEVEL == 0)
    44	#define _GLIBCXX_CALL(__n)
    45	#endif
    46	#if (_GLIBCXX_VERBOSE_LEVEL == 1)
    47	#define _GLIBCXX_CALL(__n) \
    48	  printf("   %__s:\niam = %d, __n = %ld, __num_threads = %d\n", \
    49	  __PRETTY_FUNCTION__, omp_get_thread_num(), (__n), __get_max_threads());
    50	#endif
    51	
    52	#ifndef _GLIBCXX_SCALE_DOWN_FPU
    53	/** @brief Use floating-point scaling instead of modulo for mapping
    54	 *  random numbers to a range.  This can be faster on certain CPUs. */
    55	#define _GLIBCXX_SCALE_DOWN_FPU 0
    56	#endif
    57	
    58	#ifndef _GLIBCXX_PARALLEL_ASSERTIONS
    59	/** @brief Switch on many _GLIBCXX_PARALLEL_ASSERTions in parallel code.
    60	 *  Should be switched on only locally. */
    61	#define _GLIBCXX_PARALLEL_ASSERTIONS (_GLIBCXX_ASSERTIONS+0)
    62	#endif
    63	
    64	#ifndef _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1
    65	/** @brief Switch on many _GLIBCXX_PARALLEL_ASSERTions in parallel code.
    66	 *  Consider the size of the L1 cache for
    67	*  gnu_parallel::__parallel_random_shuffle(). */
    68	#define _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1 0
    69	#endif
    70	#ifndef _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB
    71	/** @brief Switch on many _GLIBCXX_PARALLEL_ASSERTions in parallel code.
    72	 *  Consider the size of the TLB for
    73	*  gnu_parallel::__parallel_random_shuffle(). */
    74	#define _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB 0
    75	#endif