diff options
author | Reid Spencer <rspencer@reidspencer.com> | 2005-01-09 23:29:00 +0000 |
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committer | Reid Spencer <rspencer@reidspencer.com> | 2005-01-09 23:29:00 +0000 |
commit | bccc8abc79338d1cfdd5ea20f7288452ddf75b84 (patch) | |
tree | c7009daa6a24f65cb6addfee22bc6bc8f40b0d4b /lib/System/Win32/MappedFile.cpp | |
parent | 5cdcc58d51c792d329202bab97c34aefbc043b15 (diff) |
Rename Unix/*.cpp and Win32/*.cpp to have a *.inc suffix so that the silly
gdb debugger doesn't get confused on which file it is reading (the one in
lib/System or the one in lib/System/{Win32,Unix})
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19426 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/System/Win32/MappedFile.cpp')
-rw-r--r-- | lib/System/Win32/MappedFile.cpp | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/lib/System/Win32/MappedFile.cpp b/lib/System/Win32/MappedFile.cpp deleted file mode 100644 index 982a3b2390..0000000000 --- a/lib/System/Win32/MappedFile.cpp +++ /dev/null @@ -1,132 +0,0 @@ -//===- Win32/MappedFile.cpp - Win32 MappedFile Implementation ---*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file was developed by Jeff Cohen and is distributed under the -// University of Illinois Open Source License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file provides the Win32 implementation of the MappedFile concept. -// -//===----------------------------------------------------------------------===// - -//===----------------------------------------------------------------------===// -//=== WARNING: Implementation here must contain only Win32 code. -//===----------------------------------------------------------------------===// - -#include "Win32.h" -#include "llvm/System/Process.h" - -namespace llvm { -using namespace sys; - -struct sys::MappedFileInfo { - HANDLE hFile; - HANDLE hMapping; - size_t size; -}; - -void MappedFile::initialize() { - assert(!info_); - info_ = new MappedFileInfo; - info_->hFile = INVALID_HANDLE_VALUE; - info_->hMapping = NULL; - - DWORD mode = options_ & WRITE_ACCESS ? GENERIC_WRITE : GENERIC_READ; - DWORD disposition = options_ & WRITE_ACCESS ? OPEN_ALWAYS : OPEN_EXISTING; - DWORD share = options_ & WRITE_ACCESS ? FILE_SHARE_WRITE : FILE_SHARE_READ; - share = options_ & SHARED_MAPPING ? share : 0; - info_->hFile = CreateFile(path_.c_str(), mode, share, NULL, disposition, - FILE_ATTRIBUTE_NORMAL, NULL); - if (info_->hFile == INVALID_HANDLE_VALUE) { - delete info_; - info_ = NULL; - ThrowError(std::string("Can't open file: ") + path_.toString()); - } - - LARGE_INTEGER size; - if (!GetFileSizeEx(info_->hFile, &size) || - (info_->size = size_t(size.QuadPart), info_->size != size.QuadPart)) { - CloseHandle(info_->hFile); - delete info_; - info_ = NULL; - ThrowError(std::string("Can't get size of file: ") + path_.toString()); - } -} - -void MappedFile::terminate() { - unmap(); - if (info_->hFile != INVALID_HANDLE_VALUE) - CloseHandle(info_->hFile); - delete info_; - info_ = NULL; -} - -void MappedFile::unmap() { - assert(info_ && "MappedFile not initialized"); - if (isMapped()) { - UnmapViewOfFile(base_); - base_ = NULL; - } - if (info_->hMapping != INVALID_HANDLE_VALUE) { - CloseHandle(info_->hMapping); - info_->hMapping = NULL; - } -} - -void* MappedFile::map() { - if (!isMapped()) { - DWORD prot = PAGE_READONLY; - if (options_ & EXEC_ACCESS) - prot = SEC_IMAGE; - else if (options_ & WRITE_ACCESS) - prot = PAGE_READWRITE; - info_->hMapping = CreateFileMapping(info_->hFile, NULL, prot, 0, 0, NULL); - if (info_->hMapping == NULL) - ThrowError(std::string("Can't map file: ") + path_.toString()); - - prot = (options_ & WRITE_ACCESS) ? FILE_MAP_WRITE : FILE_MAP_READ; - base_ = MapViewOfFileEx(info_->hMapping, prot, 0, 0, 0, NULL); - if (base_ == NULL) { - CloseHandle(info_->hMapping); - info_->hMapping = NULL; - ThrowError(std::string("Can't map file: ") + path_.toString()); - } - } - return base_; -} - -size_t MappedFile::size() const { - assert(info_ && "MappedFile not initialized"); - return info_->size; -} - -void MappedFile::size(size_t new_size) { - assert(info_ && "MappedFile not initialized"); - - // Take the mapping out of memory. - unmap(); - - // Adjust the new_size to a page boundary. - size_t pagesizem1 = Process::GetPageSize() - 1; - new_size = (new_size + pagesizem1) & ~pagesizem1; - - // If the file needs to be extended, do so. - if (new_size > info_->size) { - LARGE_INTEGER eof; - eof.QuadPart = new_size; - if (!SetFilePointerEx(info_->hFile, eof, NULL, FILE_BEGIN)) - ThrowError(std::string("Can't set end of file: ") + path_.toString()); - if (!SetEndOfFile(info_->hFile)) - ThrowError(std::string("Can't set end of file: ") + path_.toString()); - info_->size = new_size; - } - - // Remap the file. - map(); -} - -} - -// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab |