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Diffstat (limited to 'gdb/common/scoped_mmap.h')
-rw-r--r-- | gdb/common/scoped_mmap.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/gdb/common/scoped_mmap.h b/gdb/common/scoped_mmap.h deleted file mode 100644 index 05cca9e..0000000 --- a/gdb/common/scoped_mmap.h +++ /dev/null @@ -1,94 +0,0 @@ -/* scoped_mmap, automatically unmap files - - Copyright (C) 2018-2019 Free Software Foundation, Inc. - - This file is part of GDB. - - 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 3 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 <http://www.gnu.org/licenses/>. */ - -#ifndef COMMON_SCOPED_MMAP_H -#define COMMON_SCOPED_MMAP_H - -#ifdef HAVE_SYS_MMAN_H - -#include <sys/mman.h> - -/* A smart-pointer-like class to mmap() and automatically munmap() a memory - mapping. */ - -class scoped_mmap -{ -public: - scoped_mmap () noexcept : m_mem (MAP_FAILED), m_length (0) {} - scoped_mmap (void *addr, size_t length, int prot, int flags, int fd, - off_t offset) noexcept : m_length (length) - { - m_mem = mmap (addr, m_length, prot, flags, fd, offset); - } - - ~scoped_mmap () - { - destroy (); - } - - scoped_mmap (scoped_mmap &&rhs) - { - destroy (); - - m_mem = rhs.m_mem; - m_length = rhs.m_length; - - rhs.m_mem = MAP_FAILED; - rhs.m_length = 0; - } - - DISABLE_COPY_AND_ASSIGN (scoped_mmap); - - ATTRIBUTE_UNUSED_RESULT void *release () noexcept - { - void *mem = m_mem; - m_mem = MAP_FAILED; - m_length = 0; - return mem; - } - - void reset (void *addr, size_t length, int prot, int flags, int fd, - off_t offset) noexcept - { - destroy (); - - m_length = length; - m_mem = mmap (addr, m_length, prot, flags, fd, offset); - } - - size_t size () const noexcept { return m_length; } - void *get () const noexcept { return m_mem; } - -private: - void destroy () - { - if (m_mem != MAP_FAILED) - munmap (m_mem, m_length); - } - - void *m_mem; - size_t m_length; -}; - -/* Map FILENAME in memory. Throw an error if anything goes wrong. */ -scoped_mmap mmap_file (const char *filename); - -#endif /* HAVE_SYS_MMAN_H */ - -#endif /* COMMON_SCOPED_MMAP_H */ |