808142876c
Summary: A *.cpp file header in LLDB (and in LLDB) should like this: ``` //===-- TestUtilities.cpp -------------------------------------------------===// ``` However in LLDB most of our source files have arbitrary changes to this format and these changes are spreading through LLDB as folks usually just use the existing source files as templates for their new files (most notably the unnecessary editor language indicator `-*- C++ -*-` is spreading and in every review someone is pointing out that this is wrong, resulting in people pointing out that this is done in the same way in other files). This patch removes most of these inconsistencies including the editor language indicators, all the different missing/additional '-' characters, files that center the file name, missing trailing `===//` (mostly caused by clang-format breaking the line). Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere Reviewed By: JDevlieghere Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D73258
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
//===-- LockFileWindows.cpp -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/windows/LockFileWindows.h"
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#include <io.h>
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using namespace lldb;
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using namespace lldb_private;
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namespace {
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Status fileLock(HANDLE file_handle, DWORD flags, const uint64_t start,
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const uint64_t len) {
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if (start != 0)
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return Status("Non-zero start lock regions are not supported");
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OVERLAPPED overlapped = {};
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if (!::LockFileEx(file_handle, flags, 0, len, 0, &overlapped) &&
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::GetLastError() != ERROR_IO_PENDING)
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return Status(::GetLastError(), eErrorTypeWin32);
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DWORD bytes;
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if (!::GetOverlappedResult(file_handle, &overlapped, &bytes, TRUE))
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return Status(::GetLastError(), eErrorTypeWin32);
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return Status();
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}
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} // namespace
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LockFileWindows::LockFileWindows(int fd)
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: LockFileBase(fd), m_file(reinterpret_cast<HANDLE>(_get_osfhandle(fd))) {}
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LockFileWindows::~LockFileWindows() { Unlock(); }
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bool LockFileWindows::IsValidFile() const {
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return LockFileBase::IsValidFile() && m_file != INVALID_HANDLE_VALUE;
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}
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Status LockFileWindows::DoWriteLock(const uint64_t start, const uint64_t len) {
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return fileLock(m_file, LOCKFILE_EXCLUSIVE_LOCK, start, len);
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}
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Status LockFileWindows::DoTryWriteLock(const uint64_t start,
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const uint64_t len) {
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return fileLock(m_file, LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY,
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start, len);
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}
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Status LockFileWindows::DoReadLock(const uint64_t start, const uint64_t len) {
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return fileLock(m_file, 0, start, len);
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}
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Status LockFileWindows::DoTryReadLock(const uint64_t start,
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const uint64_t len) {
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return fileLock(m_file, LOCKFILE_FAIL_IMMEDIATELY, start, len);
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}
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Status LockFileWindows::DoUnlock() {
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OVERLAPPED overlapped = {};
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if (!::UnlockFileEx(m_file, 0, m_len, 0, &overlapped) &&
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::GetLastError() != ERROR_IO_PENDING)
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return Status(::GetLastError(), eErrorTypeWin32);
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DWORD bytes;
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if (!::GetOverlappedResult(m_file, &overlapped, &bytes, TRUE))
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return Status(::GetLastError(), eErrorTypeWin32);
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return Status();
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}
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