From d81b986bea1bdfbf3a27131df9decbf09882654a Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 19 Apr 2001 23:25:40 +0000 Subject: * sysdeps/mach/hurd/mlock.c: New file. * sysdeps/mach/hurd/munlock.c: New file. * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_MEMLOCK_RANGE): Define it. * misc/Makefile (routines): Add mlock munlock mlockall munlockall. * sysdeps/generic/mlock.c: New file. * sysdeps/generic/munlock.c: New file. * sysdeps/generic/mlockall.c: New file. * sysdeps/generic/munlockall.c: New file. * sysdeps/generic/bits/mman.h (MCL_CURRENT, MCL_FUTURE): New macros. * sysdeps/unix/sysv/linux/syscalls.list (mlock, munlock, mlockall, munlockall): Change caller field to - from EXTRA. Don't use __ names; not used (and not declared in include/sys/mman.h). --- sysdeps/generic/bits/mman.h | 8 +++++++- sysdeps/generic/mlock.c | 35 +++++++++++++++++++++++++++++++++++ sysdeps/generic/mlockall.c | 36 ++++++++++++++++++++++++++++++++++++ sysdeps/generic/munlock.c | 34 ++++++++++++++++++++++++++++++++++ sysdeps/generic/munlockall.c | 34 ++++++++++++++++++++++++++++++++++ 5 files changed, 146 insertions(+), 1 deletion(-) create mode 100644 sysdeps/generic/mlock.c create mode 100644 sysdeps/generic/mlockall.c create mode 100644 sysdeps/generic/munlock.c create mode 100644 sysdeps/generic/munlockall.c (limited to 'sysdeps/generic') diff --git a/sysdeps/generic/bits/mman.h b/sysdeps/generic/bits/mman.h index 57d42546d3..10560ac92b 100644 --- a/sysdeps/generic/bits/mman.h +++ b/sysdeps/generic/bits/mman.h @@ -1,5 +1,5 @@ /* Definitions for BSD-style memory management. - Copyright (C) 1994-1998, 2000 Free Software Foundation, Inc. + Copyright (C) 1994-1998,2000,01 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -79,3 +79,9 @@ # define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ # define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ #endif + + +/* Flags for `mlockall' (can be OR'd together). */ +#define MCL_CURRENT 1 /* Lock all currently mapped pages. */ +#define MCL_FUTURE 2 /* Lock all additions to address + space. */ diff --git a/sysdeps/generic/mlock.c b/sysdeps/generic/mlock.c new file mode 100644 index 0000000000..ca9b0dfb70 --- /dev/null +++ b/sysdeps/generic/mlock.c @@ -0,0 +1,35 @@ +/* mlock -- guarantee pages are resident in memory. Stub version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include + +/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to + be memory resident. */ + +int +mlock (const void *addr, size_t len) +{ + __set_errno (ENOSYS); + return -1; +} + +stub_warning (mlock) +#include diff --git a/sysdeps/generic/mlockall.c b/sysdeps/generic/mlockall.c new file mode 100644 index 0000000000..b6f8489c7c --- /dev/null +++ b/sysdeps/generic/mlockall.c @@ -0,0 +1,36 @@ +/* mlockall -- lock in core all the pages in this process. Stub version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include + +/* Cause all currently mapped pages of the process to be memory resident + until unlocked by a call to the `munlockall', until the process exits, + or until the process calls `execve'. */ + +int +mlockall (int flags) +{ + __set_errno (ENOSYS); + return -1; +} + +stub_warning (mlockall) +#include diff --git a/sysdeps/generic/munlock.c b/sysdeps/generic/munlock.c new file mode 100644 index 0000000000..75d33b16d4 --- /dev/null +++ b/sysdeps/generic/munlock.c @@ -0,0 +1,34 @@ +/* munlock -- undo the effects of prior mlock calls. Stub version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include + +/* Undo the effects on these whole pages of any prior mlock calls. */ + +int +munlock (const void *addr, size_t len) +{ + __set_errno (ENOSYS); + return -1; +} + +stub_warning (munlock) +#include diff --git a/sysdeps/generic/munlockall.c b/sysdeps/generic/munlockall.c new file mode 100644 index 0000000000..763ab99dcd --- /dev/null +++ b/sysdeps/generic/munlockall.c @@ -0,0 +1,34 @@ +/* munlockall -- undo the effects of all prior mlock calls. Stub version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include + +/* Undo the effects of all prior mlock calls in this process. */ + +int +munlockall (void) +{ + __set_errno (ENOSYS); + return -1; +} + +stub_warning (munlockall) +#include -- cgit v1.2.3