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/* -*- C++ -*- */
// $Id$
// Mem_Map.i
ACE_INLINE ACE_HANDLE
ACE_Mem_Map::handle (void) const
{
ACE_TRACE ("ACE_Mem_Map::handle");
return this->handle_;
}
// Return the name of file that is mapped (if any).
ACE_INLINE const TCHAR *
ACE_Mem_Map::filename (void) const
{
return this->filename_;
}
ACE_INLINE int
ACE_Mem_Map::map (ACE_HANDLE handle,
int len,
int prot,
int share,
void *addr,
off_t pos)
{
ACE_TRACE ("ACE_Mem_Map::map");
return this->map_it (handle, len, prot, share, addr, pos);
}
// Remap the file associated with <this->handle_>.
ACE_INLINE int
ACE_Mem_Map::map (int len,
int prot,
int share,
void *addr,
off_t pos)
{
ACE_TRACE ("ACE_Mem_Map::map");
return this->map_it (this->handle (), len, prot,
share, addr, pos);
}
// This operator passes back the starting address of the mapped file.
ACE_INLINE int
ACE_Mem_Map::operator () (void *&addr)
{
ACE_TRACE ("ACE_Mem_Map::operator");
if (this->base_addr_ == MAP_FAILED)
return -1;
else
{
addr = this->base_addr_;
return 0;
}
}
// Return the base address.
ACE_INLINE void *
ACE_Mem_Map::addr (void) const
{
ACE_TRACE ("ACE_Mem_Map::addr");
return this->base_addr_;
}
// This function returns the number of bytes currently mapped in the
// file.
ACE_INLINE size_t
ACE_Mem_Map::size (void) const
{
ACE_TRACE ("ACE_Mem_Map::size");
return this->length_;
}
// Unmap the region starting at <this->base_addr_>.
ACE_INLINE int
ACE_Mem_Map::unmap (int len)
{
ACE_TRACE ("ACE_Mem_Map::unmap");
if (this->file_mapping_ != this->handle_
&& this->file_mapping_ != ACE_INVALID_HANDLE)
ACE_OS::close (this->file_mapping_);
this->file_mapping_ = ACE_INVALID_HANDLE;
if (this->base_addr_ != MAP_FAILED)
{
int result = ACE_OS::munmap (this->base_addr_, len < 0 ? this->length_ : len);
this->base_addr_ = MAP_FAILED;
return result;
}
else
return 0;
}
// Unmap the region starting at <addr_>.
ACE_INLINE int
ACE_Mem_Map::unmap (void *addr, int len)
{
ACE_TRACE ("ACE_Mem_Map::unmap");
if (this->file_mapping_ != this->handle_
&& this->file_mapping_ != ACE_INVALID_HANDLE)
ACE_OS::close (this->file_mapping_);
this->file_mapping_ = ACE_INVALID_HANDLE;
return ACE_OS::munmap (addr, len < 0 ? this->length_ : len);
}
// Sync <len> bytes of the memory region to the backing store starting
// at <this->base_addr_>. If <len> == -1 then sync the whole mapped
// region.
ACE_INLINE int
ACE_Mem_Map::sync (ssize_t len, int flags)
{
ACE_TRACE ("ACE_Mem_Map::sync");
return ACE_OS::msync (this->base_addr_, len < 0 ? this->length_ : len, flags);
}
// Sync <len> bytes of the memory region to the backing store starting
// at <addr_>.
ACE_INLINE int
ACE_Mem_Map::sync (void *addr, size_t len, int flags)
{
ACE_TRACE ("ACE_Mem_Map::sync");
return ACE_OS::msync (addr, len, flags);
}
// Change the protection of the pages of the mapped region to <prot>
// starting at <this->base_addr_> up to <len> bytes. If <len> == -1
// then change protection of all pages in the mapped region.
ACE_INLINE int
ACE_Mem_Map::protect (ssize_t len, int prot)
{
ACE_TRACE ("ACE_Mem_Map::protect");
if (len < 0)
len = this->length_;
return ACE_OS::mprotect (this->base_addr_, len, prot);
}
// Change the protection of the pages of the mapped region to <prot>
// starting at <addr> up to <len> bytes.
ACE_INLINE int
ACE_Mem_Map::protect (void *addr, size_t len, int prot)
{
ACE_TRACE ("ACE_Mem_Map::protect");
return ACE_OS::mprotect (addr, len, prot);
}
// Hook into the underlying VM system.
ACE_INLINE int
ACE_Mem_Map::advise (int behavior, int len)
{
ACE_TRACE ("ACE_Mem_Map::advise");
if (len < 0)
len = this->length_;
return ACE_OS::madvise ((caddr_t) this->base_addr_, len, behavior);
}
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