b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
//===-- LockFileBase.cpp ----------------------------------------*- 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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#include "lldb/Host/LockFileBase.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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Error AlreadyLocked() { return Error("Already locked"); }
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Error NotLocked() { return Error("Not locked"); }
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}
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LockFileBase::LockFileBase(int fd)
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: m_fd(fd), m_locked(false), m_start(0), m_len(0) {}
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bool LockFileBase::IsLocked() const { return m_locked; }
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Error LockFileBase::WriteLock(const uint64_t start, const uint64_t len) {
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return DoLock([&](const uint64_t start,
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const uint64_t len) { return DoWriteLock(start, len); },
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start, len);
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}
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Error LockFileBase::TryWriteLock(const uint64_t start, const uint64_t len) {
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return DoLock([&](const uint64_t start,
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const uint64_t len) { return DoTryWriteLock(start, len); },
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start, len);
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}
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Error LockFileBase::ReadLock(const uint64_t start, const uint64_t len) {
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return DoLock([&](const uint64_t start,
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const uint64_t len) { return DoReadLock(start, len); },
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start, len);
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}
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Error LockFileBase::TryReadLock(const uint64_t start, const uint64_t len) {
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return DoLock([&](const uint64_t start,
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const uint64_t len) { return DoTryReadLock(start, len); },
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start, len);
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}
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Error LockFileBase::Unlock() {
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if (!IsLocked())
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return NotLocked();
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const auto error = DoUnlock();
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if (error.Success()) {
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m_locked = false;
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m_start = 0;
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m_len = 0;
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}
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return error;
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}
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bool LockFileBase::IsValidFile() const { return m_fd != -1; }
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Error LockFileBase::DoLock(const Locker &locker, const uint64_t start,
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const uint64_t len) {
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if (!IsValidFile())
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return Error("File is invalid");
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if (IsLocked())
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return AlreadyLocked();
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const auto error = locker(start, len);
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if (error.Success()) {
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m_locked = true;
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m_start = start;
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m_len = len;
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}
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return error;
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}
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