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Member "stress-ng-0.09.56/test/test-madvise.c" (15 Mar 2019, 2064 Bytes) of package /linux/privat/stress-ng-0.09.56.tar.xz:


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    1 /*
    2  * Copyright (C) 2013-2019 Canonical, Ltd.
    3  *
    4  * This program is free software; you can redistribute it and/or
    5  * modify it under the terms of the GNU General Public License
    6  * as published by the Free Software Foundation; either version 2
    7  * of the License, or (at your option) any later version.
    8  *
    9  * This program is distributed in the hope that it will be useful,
   10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12  * GNU General Public License for more details.
   13  *
   14  * You should have received a copy of the GNU General Public License
   15  * along with this program; if not, write to the Free Software
   16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   17  *
   18  * This code is a complete clean re-write of the stress tool by
   19  * Colin Ian King <colin.king@canonical.com> and attempts to be
   20  * backwardly compatible with the stress tool by Amos Waterland
   21  * <apw@rossby.metr.ou.edu> but has more stress tests and more
   22  * functionality.
   23  *
   24  */
   25 #include <sys/mman.h>
   26 
   27 static char buffer[8192];
   28 
   29 static const int madvise_options[] = {
   30 #if defined(MADV_NORMAL)
   31     MADV_NORMAL,
   32 #endif
   33 #if defined(MADV_RANDOM)
   34     MADV_RANDOM,
   35 #endif
   36 #if defined(MADV_SEQUENTIAL)
   37     MADV_SEQUENTIAL,
   38 #endif
   39 #if defined(MADV_WILLNEED)
   40     MADV_WILLNEED,
   41 #endif
   42 #if defined(MADV_DONTNEED)
   43     MADV_DONTNEED,
   44 #endif
   45 #if defined(MADV_DONTFORK)
   46     MADV_DONTFORK,
   47 #endif
   48 #if defined(MADV_DOFORK)
   49     MADV_DOFORK,
   50 #endif
   51 #if defined(MADV_MERGEABLE)
   52     MADV_MERGEABLE,
   53 #endif
   54 #if defined(MADV_UNMERGEABLE)
   55     MADV_UNMERGEABLE,
   56 #endif
   57 #if defined(MADV_HUGEPAGE)
   58     MADV_HUGEPAGE,
   59 #endif
   60 #if defined(MADV_NOHUGEPAGE)
   61     MADV_NOHUGEPAGE,
   62 #endif
   63 #if defined(MADV_DONTDUMP)
   64     MADV_DONTDUMP,
   65 #endif
   66 #if defined(MADV_DODUMP)
   67     MADV_DODUMP,
   68 #endif
   69 #if defined(MADV_FREE)
   70     MADV_FREE
   71 #endif
   72 };
   73 
   74 /*
   75  *  The following enum will cause test build failure
   76  *  if there are no madvise options
   77  */
   78 enum {
   79     NO_MADVISE_OPTIONS = 1 / sizeof(madvise_options)
   80 };
   81 
   82 int main(void)
   83 {
   84     return madvise(buffer, sizeof(buffer), MADV_NORMAL);
   85 }