kc3-lang/gnulib/tests/mmap-anon-util.h

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• Hash : abe5d60f
  Author :
  Date : 2025-09-10T23:03:55
  

  Remove support for IRIX and Solaris <= 7 regarding old mmap.
  
  * m4/mmap-anon.m4 (gl_FUNC_MMAP_ANON): Don't define HAVE_MAP_ANONYMOUS.
  * m4/memchr.m4 (gl_FUNC_MEMCHR): Assume that mmap supports MAP_ANONYMOUS
  or MAP_ANON.
  * m4/strncat.m4 (gl_FUNC_STRNCAT): Likewise.
  * lib/get-rusage-as.c (MAP_FILE): Remove macro.
  (get_rusage_as_via_setrlimit): Assume that mmap supports MAP_ANONYMOUS
  or MAP_ANON.
  * modules/get-rusage-as (Depends-on): Remove 'open'.
  * lib/pagealign_alloc.c (MAP_FILE): Remove macro.
  (pagealign_alloc): Assume that mmap supports MAP_ANONYMOUS or MAP_ANON.
  * modules/pagealign_alloc (Depends-on): Remove 'open'.
  * lib/vma-iter.c: Remove code for IRIX.
  (vma_iterate): Assume that mmap supports MAP_ANONYMOUS or MAP_ANON.
  * lib/vma-iter.h: Remove code for IRIX.
  * lib/stackvma.c: Remove code for IRIX.
  (vma_iterate): Assume that mmap supports MAP_ANONYMOUS or MAP_ANON.
  * lib/stackvma.h: Remove code for IRIX.
  * tests/mmap-anon-util.h: (zero_fd, map_flags, MAP_FILE): Remove macros.
  (mmap_zeromap): Assume that mmap supports MAP_ANONYMOUS or MAP_ANON.
  * tests/zerosize-ptr.h (MAP_FILE): Remove macro.
  (zerosize_ptr): Assume that mmap supports MAP_ANONYMOUS or MAP_ANON.
  * tests/jit/test-cache.c (main): Assume that mmap supports MAP_ANONYMOUS
  or MAP_ANON.
  * tests/test-sigsegv-catch-segv1.c (main): Assume that mmap supports
  MAP_ANONYMOUS or MAP_ANON.
  * tests/test-sigsegv-catch-segv2.c (main): Likewise.
  * tests/test-sigsegv-catch-stackoverflow2.c (main): Likewise.
  * tests/test-vma-prot.c: Test HAVE_MMAP instead of HAVE_MAP_ANONYMOUS.
  

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• tests/mmap-anon-util.h

• /* Some auxiliary stuff for using mmap & friends.
     Copyright (C) 2002-2025 Free Software Foundation, Inc.
  
     This program 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 2 of the License, or
     (at your option) any later version.
  
     This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible.  */
  
  #if defined _WIN32 && !defined __CYGWIN__
  
  /* ------------------------ Windows ------------------------ */
  
  # define WIN32_LEAN_AND_MEAN /* avoid including junk */
  # include <windows.h>
  # include <winerror.h>
  # define PROT_NONE PAGE_NOACCESS
  # define PROT_READ PAGE_READONLY
  # define PROT_READ_WRITE PAGE_READWRITE
  
  static void *
  mmap_zeromap (void *map_addr_hint, size_t map_len)
  {
    if (VirtualAlloc ((void *)((uintptr_t) map_addr_hint & -0x10000),
                      (((uintptr_t) map_addr_hint + map_len - 1) | 0xffff) + 1
                      - ((uintptr_t) map_addr_hint & -0x10000),
                      MEM_RESERVE, PAGE_NOACCESS)
        && VirtualAlloc (map_addr_hint, map_len, MEM_COMMIT, PAGE_READWRITE))
      return map_addr_hint;
    else
      return (void *)(-1);
  }
  
  int
  munmap (void *addr, size_t len)
  {
    if (VirtualFree (addr, len, MEM_DECOMMIT))
      return 0;
    else
      return -1;
  }
  
  int
  mprotect (void *addr, size_t len, int prot)
  {
    DWORD oldprot;
  
    if (VirtualProtect (addr, len, prot, &oldprot))
      return 0;
    else
      return -1;
  }
  
  #else
  
  /* ------------------------ Unix ------------------------ */
  
  # include <sys/types.h>
  # include <sys/mman.h>
  # include <fcntl.h>
  
  # ifndef PROT_NONE
  #  define PROT_NONE 0
  # endif
  # define PROT_READ_WRITE  (PROT_READ|PROT_WRITE)
  
  static void *
  mmap_zeromap (void *map_addr_hint, size_t map_len)
  {
  # ifdef __hpux
    /* HP-UX 10 mmap() often fails when given a hint.  So give the OS complete
       freedom about the address range.  */
    return (void *) mmap ((void *) 0,    map_len, PROT_READ_WRITE,
                          MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
  # else
    return (void *) mmap (map_addr_hint, map_len, PROT_READ_WRITE,
                          MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
  # endif
  }
  
  #endif
  

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