granicus.if.org Git - strace/blob - tests/membarrier.c

   1 /*
   2  * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2015-2018 The strace developers.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "tests.h"
  30 #include <asm/unistd.h>
  31 #include "scno.h"
  32
  33 #ifdef __NR_membarrier
  34
  35 # include <assert.h>
  36 # include <errno.h>
  37 # include <stdio.h>
  38 # include <unistd.h>
  39
  40 int
  41 main(void)
  42 {
  43         assert(syscall(__NR_membarrier, 3, 255) == -1);
  44         int saved_errno = errno;
  45         printf("membarrier(0x3 /* MEMBARRIER_CMD_??? */, 255) = %s\n",
  46                sprintrc(-1));
  47         if (saved_errno != ENOSYS) {
  48                 const char *text_global;
  49                 const char *text;
  50                 int rc = syscall(__NR_membarrier, 0, 0);
  51
  52                 assert(rc >= 0);
  53
  54                 text_global = rc & 1 ? "MEMBARRIER_CMD_GLOBAL" : "";
  55
  56                 switch (rc & ~1) {
  57                 case 0:
  58                         text = "";
  59                         break;
  60                 case 8:
  61                         text = "MEMBARRIER_CMD_PRIVATE_EXPEDITED";
  62                         break;
  63                 case 8|16:
  64                         text = "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
  65                                "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED";
  66                         break;
  67
  68                 case 2|4|8|16:
  69                         text = "MEMBARRIER_CMD_GLOBAL_EXPEDITED|"
  70                                "MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED|"
  71                                "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
  72                                "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED";
  73                         break;
  74
  75                 case 2|4|8|16|32|64:
  76                         text = "MEMBARRIER_CMD_GLOBAL_EXPEDITED|"
  77                                "MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED|"
  78                                "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
  79                                "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED|"
  80                                "MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE|"
  81                                "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE";
  82                         break;
  83
  84                 default:
  85                         error_msg_and_fail("membarrier returned %#x, does"
  86                                            " the test have to be updated?", rc);
  87                 }
  88                 printf("membarrier(MEMBARRIER_CMD_QUERY, 0) = %#x (%s%s%s)\n",
  89                        rc, text_global, text[0] && text_global[0] ? "|" : "",
  90                        text);
  91         }
  92         puts("+++ exited with 0 +++");
  93         return 0;
  94 }
  95
  96 #else
  97
  98 SKIP_MAIN_UNDEFINED("__NR_membarrier")
  99
 100 #endif