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usr / src / contrib / llvm-project / lldb / source / Host / common /

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📄 Editline.cpp(52.55 KB)
📄 File.cpp(19.23 KB)
📄 FileAction.cpp(2.16 KB)
📄 FileCache.cpp(3.38 KB)
📄 FileSystem.cpp(14.09 KB)
📄 GetOptInc.cpp(12.53 KB)
📄 Host.cpp(21.11 KB)
📄 HostInfoBase.cpp(12.08 KB)
📄 HostNativeThreadBase.cpp(1.92 KB)
📄 HostProcess.cpp(1.5 KB)
📄 HostThread.cpp(1.47 KB)
📄 LZMA.cpp(4.76 KB)
📄 LockFileBase.cpp(2.25 KB)
📄 MainLoop.cpp(10.67 KB)
📄 MonitoringProcessLauncher.cpp(2.44 KB)
📄 NativeProcessProtocol.cpp(26.66 KB)
📄 NativeRegisterContext.cpp(14.02 KB)
📄 NativeThreadProtocol.cpp(755 B)
📄 NativeWatchpointList.cpp(941 B)
📄 OptionParser.cpp(2.38 KB)
📄 PipeBase.cpp(893 B)
📄 ProcessLaunchInfo.cpp(11.86 KB)
📄 ProcessRunLock.cpp(1.43 KB)
📄 PseudoTerminal.cpp(9.53 KB)
📄 Socket.cpp(14.42 KB)
📄 SocketAddress.cpp(8.52 KB)
📄 StringConvert.cpp(2.53 KB)
📄 TCPSocket.cpp(9.17 KB)
📄 Terminal.cpp(6.24 KB)
📄 ThreadLauncher.cpp(2.54 KB)
📄 UDPSocket.cpp(4.3 KB)
📄 XML.cpp(14.23 KB)

Editing: LockFileBase.cpp

//===-- LockFileBase.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "lldb/Host/LockFileBase.h"

using namespace lldb;
using namespace lldb_private;

namespace {

Status AlreadyLocked() { return Status("Already locked"); }

Status NotLocked() { return Status("Not locked"); }
}

LockFileBase::LockFileBase(int fd)
    : m_fd(fd), m_locked(false), m_start(0), m_len(0) {}

bool LockFileBase::IsLocked() const { return m_locked; }

Status LockFileBase::WriteLock(const uint64_t start, const uint64_t len) {
  return DoLock([&](const uint64_t start,
                    const uint64_t len) { return DoWriteLock(start, len); },
                start, len);
}

Status LockFileBase::TryWriteLock(const uint64_t start, const uint64_t len) {
  return DoLock([&](const uint64_t start,
                    const uint64_t len) { return DoTryWriteLock(start, len); },
                start, len);
}

Status LockFileBase::ReadLock(const uint64_t start, const uint64_t len) {
  return DoLock([&](const uint64_t start,
                    const uint64_t len) { return DoReadLock(start, len); },
                start, len);
}

Status LockFileBase::TryReadLock(const uint64_t start, const uint64_t len) {
  return DoLock([&](const uint64_t start,
                    const uint64_t len) { return DoTryReadLock(start, len); },
                start, len);
}

Status LockFileBase::Unlock() {
  if (!IsLocked())
    return NotLocked();

const auto error = DoUnlock();
  if (error.Success()) {
    m_locked = false;
    m_start = 0;
    m_len = 0;
  }
  return error;
}

bool LockFileBase::IsValidFile() const { return m_fd != -1; }

Status LockFileBase::DoLock(const Locker &locker, const uint64_t start,
                            const uint64_t len) {
  if (!IsValidFile())
    return Status("File is invalid");

if (IsLocked())
    return AlreadyLocked();

const auto error = locker(start, len);
  if (error.Success()) {
    m_locked = true;
    m_start = start;
    m_len = len;
  }

return error;
}

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Editing: LockFileBase.cpp

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