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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201258 91177308-0d34-0410-b5e6-96231b3b80d8
173 lines
4.5 KiB
C++
173 lines
4.5 KiB
C++
//===- WindowsSupport.h - Common Windows Include File -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines things specific to Windows implementations. In addition to
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// providing some helpers for working with win32 APIs, this header wraps
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// <windows.h> with some portability macros. Always include WindowsSupport.h
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// instead of including <windows.h> directly.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic Win32 code that
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//=== is guaranteed to work on *all* Win32 variants.
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//===----------------------------------------------------------------------===//
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// mingw-w64 tends to define it as 0x0502 in its headers.
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#undef _WIN32_WINNT
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#undef _WIN32_IE
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// Require at least Windows XP(5.1) API.
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#define _WIN32_WINNT 0x0501
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#define _WIN32_IE 0x0600 // MinGW at it again.
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#define WIN32_LEAN_AND_MEAN
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Config/config.h" // Get build system configuration settings
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/system_error.h"
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#include <windows.h>
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#include <wincrypt.h>
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#include <cassert>
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#include <string>
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#include <vector>
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inline bool MakeErrMsg(std::string* ErrMsg, const std::string& prefix) {
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if (!ErrMsg)
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return true;
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char *buffer = NULL;
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DWORD R = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, GetLastError(), 0, (LPSTR)&buffer, 1, NULL);
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if (R)
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*ErrMsg = prefix + buffer;
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else
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*ErrMsg = prefix + "Unknown error";
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LocalFree(buffer);
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return R != 0;
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}
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template <typename HandleTraits>
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class ScopedHandle {
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typedef typename HandleTraits::handle_type handle_type;
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handle_type Handle;
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ScopedHandle(const ScopedHandle &other); // = delete;
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void operator=(const ScopedHandle &other); // = delete;
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public:
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ScopedHandle()
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: Handle(HandleTraits::GetInvalid()) {}
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explicit ScopedHandle(handle_type h)
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: Handle(h) {}
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~ScopedHandle() {
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if (HandleTraits::IsValid(Handle))
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HandleTraits::Close(Handle);
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}
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handle_type take() {
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handle_type t = Handle;
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Handle = HandleTraits::GetInvalid();
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return t;
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}
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ScopedHandle &operator=(handle_type h) {
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if (HandleTraits::IsValid(Handle))
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HandleTraits::Close(Handle);
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Handle = h;
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return *this;
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}
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// True if Handle is valid.
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LLVM_EXPLICIT operator bool() const {
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return HandleTraits::IsValid(Handle) ? true : false;
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}
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operator handle_type() const {
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return Handle;
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}
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};
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struct CommonHandleTraits {
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typedef HANDLE handle_type;
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static handle_type GetInvalid() {
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return INVALID_HANDLE_VALUE;
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}
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static void Close(handle_type h) {
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::CloseHandle(h);
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}
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static bool IsValid(handle_type h) {
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return h != GetInvalid();
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}
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};
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struct JobHandleTraits : CommonHandleTraits {
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static handle_type GetInvalid() {
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return NULL;
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}
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};
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struct CryptContextTraits : CommonHandleTraits {
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typedef HCRYPTPROV handle_type;
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static handle_type GetInvalid() {
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return 0;
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}
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static void Close(handle_type h) {
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::CryptReleaseContext(h, 0);
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}
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static bool IsValid(handle_type h) {
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return h != GetInvalid();
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}
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};
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struct FindHandleTraits : CommonHandleTraits {
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static void Close(handle_type h) {
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::FindClose(h);
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}
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};
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struct FileHandleTraits : CommonHandleTraits {};
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typedef ScopedHandle<CommonHandleTraits> ScopedCommonHandle;
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typedef ScopedHandle<FileHandleTraits> ScopedFileHandle;
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typedef ScopedHandle<CryptContextTraits> ScopedCryptContext;
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typedef ScopedHandle<FindHandleTraits> ScopedFindHandle;
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typedef ScopedHandle<JobHandleTraits> ScopedJobHandle;
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namespace llvm {
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template <class T>
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class SmallVectorImpl;
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template <class T>
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typename SmallVectorImpl<T>::const_pointer
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c_str(SmallVectorImpl<T> &str) {
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str.push_back(0);
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str.pop_back();
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return str.data();
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}
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namespace sys {
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namespace windows {
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error_code UTF8ToUTF16(StringRef utf8,
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SmallVectorImpl<wchar_t> &utf16);
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error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
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SmallVectorImpl<char> &utf8);
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} // end namespace windows
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} // end namespace sys
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} // end namespace llvm.
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