diff options
Diffstat (limited to 'ace/Mem_Map.cpp')
| -rw-r--r-- | ace/Mem_Map.cpp | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/ace/Mem_Map.cpp b/ace/Mem_Map.cpp deleted file mode 100644 index 2da6892070c..00000000000 --- a/ace/Mem_Map.cpp +++ /dev/null @@ -1,218 +0,0 @@ -// Mem_Map.cpp -// $Id$ - -// Defines the member functions for the memory mapping facility. - -#define ACE_BUILD_DLL -#include "ace/Mem_Map.h" - -#if !defined (__ACE_INLINE__) -#include "ace/Mem_Map.i" -#endif /* __ACE_INLINE__ */ - -ACE_ALLOC_HOOK_DEFINE(ACE_Mem_Map) - -void -ACE_Mem_Map::dump (void) const -{ - ACE_TRACE ("ACE_Mem_Map::dump"); - - ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this)); - ACE_DEBUG ((LM_DEBUG, "base_addr_ = %x", this->base_addr_)); - ACE_DEBUG ((LM_DEBUG, "\nfilename_ = %s", this->filename_)); - ACE_DEBUG ((LM_DEBUG, "\nlength_ = %d", this->length_)); - ACE_DEBUG ((LM_DEBUG, "\nhandle_ = %d", this->handle_)); - ACE_DEBUG ((LM_DEBUG, "\nfile_mapping_ = %d", this->file_mapping_)); - ACE_DEBUG ((LM_DEBUG, "\nclose_handle_ = %d", this->close_handle_)); - ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP)); -} - -int -ACE_Mem_Map::close (void) -{ - ACE_TRACE ("ACE_Mem_Map::close"); - - this->unmap (); - - if (this->file_mapping_ != this->handle_) - ACE_OS::close (this->file_mapping_); - - if (this->close_handle_) - return ACE_OS::close (this->handle_); - - return 0; -} - -ACE_Mem_Map::~ACE_Mem_Map (void) -{ - ACE_TRACE ("ACE_Mem_Map::~ACE_Mem_Map"); - - this->close (); -} - -// This function does the dirty work of actually calling ACE_OS::mmap -// to map the file into memory. - -int -ACE_Mem_Map::map_it (ACE_HANDLE handle, - int len_request, - int prot, - int share, - void *addr, - off_t pos) -{ - ACE_TRACE ("ACE_Mem_Map::map_it"); - this->base_addr_ = addr; - this->handle_ = handle; - - long file_len = ACE_OS::filesize (this->handle_); - - if (file_len == -1) - return -1; - - if (this->length_ < size_t (file_len)) - { - // If the length of the mapped region is less than the length of - // the file then we force a complete new remapping by setting - // the descriptor to ACE_INVALID_HANDLE (closing down the - // descriptor if necessary). - if (this->file_mapping_ != this->handle_) - ACE_OS::close (this->file_mapping_); - this->file_mapping_ = ACE_INVALID_HANDLE; - } - - // At this point we know <file_len> is not negative... - this->length_ = size_t (file_len); - - if (len_request == -1) - len_request = 0; - - if ((this->length_ == 0 && len_request > 0) - || this->length_ < size_t (len_request)) - { - this->length_ = len_request; - - // Extend the backing store. - if (ACE_OS::lseek (this->handle_, - len_request > 0 ? len_request - 1 : 0, - SEEK_SET) == -1 - || ACE_OS::write (this->handle_, "", 1) == -1 - || ACE_OS::lseek (this->handle_, 0, SEEK_SET) == -1) - return -1; - } - - this->base_addr_ = ACE_OS::mmap (this->base_addr_, - this->length_, - prot, - share, - this->handle_, - off_t (ACE::round_to_pagesize (pos)), - &this->file_mapping_); - - return this->base_addr_ == MAP_FAILED ? -1 : 0; -} - -int -ACE_Mem_Map::open (LPCTSTR file_name, - int flags, - int mode) -{ - ACE_TRACE ("ACE_Mem_Map::open"); - - ACE_OS::strncpy (this->filename_, file_name, MAXPATHLEN); - - this->handle_ = ACE_OS::open (file_name, flags, mode); - - if (this->handle_ == ACE_INVALID_HANDLE) - return -1; - else - { - this->close_handle_ = 1; - return 0; - } -} - -int -ACE_Mem_Map::map (LPCTSTR file_name, - int len, - int flags, - int mode, - int prot, - int share, - void *addr, - off_t pos) -{ - ACE_TRACE ("ACE_Mem_Map::map"); - this->length_ = 0; - - if (this->open (file_name, flags, mode) == -1) - return -1; - else - return this->map_it (this->handle (), len, prot, share, addr, pos); -} - -ACE_Mem_Map::ACE_Mem_Map (void) - : base_addr_ (0), - length_ (0), - handle_ (ACE_INVALID_HANDLE), - file_mapping_ (ACE_INVALID_HANDLE), - close_handle_ (0) -{ - ACE_TRACE ("ACE_Mem_Map::ACE_Mem_Map"); - ACE_OS::memset (this->filename_, 0, sizeof this->filename_); -} - -// Map a file specified by FILE_NAME. - -ACE_Mem_Map::ACE_Mem_Map (LPCTSTR file_name, - int len, - int flags, - int mode, - int prot, - int share, - void *addr, - off_t pos) - : base_addr_ (0), - file_mapping_ (ACE_INVALID_HANDLE), - close_handle_ (0) -{ - ACE_TRACE ("ACE_Mem_Map::ACE_Mem_Map"); - if (this->map (file_name, len, flags, mode, prot, share, addr, pos) < 0) - ACE_ERROR ((LM_ERROR, "%p\n", "ACE_Mem_Map::ACE_Mem_Map")); -} - -// Map a file from an open file descriptor HANDLE. This function will -// lookup the length of the file if it is not given. - -ACE_Mem_Map::ACE_Mem_Map (ACE_HANDLE handle, - int len, - int prot, - int share, - void *addr, - off_t pos) - : file_mapping_ (ACE_INVALID_HANDLE), - close_handle_ (0) -{ - ACE_TRACE ("ACE_Mem_Map::ACE_Mem_Map"); - - ACE_OS::memset (this->filename_, 0, sizeof this->filename_); - - if (this->map (handle, len, prot, share, addr, pos) < 0) - ACE_ERROR ((LM_ERROR, "%p\n", "ACE_Mem_Map::ACE_Mem_Map")); -} - -// Close down and remove the file from the file system. - -int -ACE_Mem_Map::remove (void) -{ - ACE_TRACE ("ACE_Mem_Map::remove"); - - ACE_OS::ftruncate (this->handle_, 0); - this->close (); - - if (this->filename_[0] != '\0') - return ACE_OS::unlink (this->filename_); - else - return 0; -} |