75e164f61d
The cleanup was manual, but assisted by "include-what-you-use". It consists in 1. Removing unused forward declaration. No impact expected. 2. Removing unused headers in .cpp files. No impact expected. 3. Removing unused headers in .h files. This removes implicit dependencies and is generally considered a good thing, but this may break downstream builds. I've updated llvm, clang, lld, lldb and mlir deps, and included a list of the modification in the second part of the commit. 4. Replacing header inclusion by forward declaration. This has the same impact as 3. Notable changes: - llvm/Support/TargetParser.h no longer includes llvm/Support/AArch64TargetParser.h nor llvm/Support/ARMTargetParser.h - llvm/Support/TypeSize.h no longer includes llvm/Support/WithColor.h - llvm/Support/YAMLTraits.h no longer includes llvm/Support/Regex.h - llvm/ADT/SmallVector.h no longer includes llvm/Support/MemAlloc.h nor llvm/Support/ErrorHandling.h You may need to add some of these headers in your compilation units, if needs be. As an hint to the impact of the cleanup, running clang++ -E -Iinclude -I../llvm/include ../llvm/lib/Support/*.cpp -std=c++14 -fno-rtti -fno-exceptions | wc -l before: 8000919 lines after: 7917500 lines Reduced dependencies also helps incremental rebuilds and is more ccache friendly, something not shown by the above metric :-) Discourse thread on the topic: https://llvm.discourse.group/t/include-what-you-use-include-cleanup/5831
133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
//===-- Signposts.cpp - Interval debug annotations ------------------------===//
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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 "llvm/Support/Signposts.h"
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#include "llvm/Config/config.h"
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#if LLVM_SUPPORT_XCODE_SIGNPOSTS
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/Mutex.h"
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#include <Availability.h>
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#include <os/signpost.h>
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#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
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using namespace llvm;
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#if LLVM_SUPPORT_XCODE_SIGNPOSTS
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#define SIGNPOSTS_AVAILABLE() \
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__builtin_available(macos 10.14, iOS 12, tvOS 12, watchOS 5, *)
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namespace {
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os_log_t *LogCreator() {
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os_log_t *X = new os_log_t;
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*X = os_log_create("org.llvm.signposts", OS_LOG_CATEGORY_POINTS_OF_INTEREST);
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return X;
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}
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struct LogDeleter {
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void operator()(os_log_t *X) const {
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os_release(*X);
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delete X;
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}
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};
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} // end anonymous namespace
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namespace llvm {
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class SignpostEmitterImpl {
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using LogPtrTy = std::unique_ptr<os_log_t, LogDeleter>;
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using LogTy = LogPtrTy::element_type;
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LogPtrTy SignpostLog;
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DenseMap<const void *, os_signpost_id_t> Signposts;
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sys::SmartMutex<true> Mutex;
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LogTy &getLogger() const { return *SignpostLog; }
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os_signpost_id_t getSignpostForObject(const void *O) {
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sys::SmartScopedLock<true> Lock(Mutex);
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const auto &I = Signposts.find(O);
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if (I != Signposts.end())
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return I->second;
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os_signpost_id_t ID = {};
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if (SIGNPOSTS_AVAILABLE()) {
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ID = os_signpost_id_make_with_pointer(getLogger(), O);
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}
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const auto &Inserted = Signposts.insert(std::make_pair(O, ID));
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return Inserted.first->second;
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}
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public:
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SignpostEmitterImpl() : SignpostLog(LogCreator()) {}
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bool isEnabled() const {
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if (SIGNPOSTS_AVAILABLE())
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return os_signpost_enabled(*SignpostLog);
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return false;
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}
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void startInterval(const void *O, llvm::StringRef Name) {
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if (isEnabled()) {
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if (SIGNPOSTS_AVAILABLE()) {
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// Both strings used here are required to be constant literal strings.
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os_signpost_interval_begin(getLogger(), getSignpostForObject(O),
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"LLVM Timers", "%s", Name.data());
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}
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}
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}
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void endInterval(const void *O, llvm::StringRef Name) {
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if (isEnabled()) {
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if (SIGNPOSTS_AVAILABLE()) {
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// Both strings used here are required to be constant literal strings.
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os_signpost_interval_end(getLogger(), getSignpostForObject(O),
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"LLVM Timers", "");
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}
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}
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}
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};
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} // end namespace llvm
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#else
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/// Definition necessary for use of std::unique_ptr in SignpostEmitter::Impl.
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class llvm::SignpostEmitterImpl {};
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#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
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#if LLVM_SUPPORT_XCODE_SIGNPOSTS
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#define HAVE_ANY_SIGNPOST_IMPL 1
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#else
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#define HAVE_ANY_SIGNPOST_IMPL 0
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#endif
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SignpostEmitter::SignpostEmitter() {
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#if HAVE_ANY_SIGNPOST_IMPL
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Impl = std::make_unique<SignpostEmitterImpl>();
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#endif // if !HAVE_ANY_SIGNPOST_IMPL
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}
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SignpostEmitter::~SignpostEmitter() = default;
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bool SignpostEmitter::isEnabled() const {
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#if HAVE_ANY_SIGNPOST_IMPL
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return Impl->isEnabled();
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#else
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return false;
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#endif // if !HAVE_ANY_SIGNPOST_IMPL
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}
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void SignpostEmitter::startInterval(const void *O, StringRef Name) {
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#if HAVE_ANY_SIGNPOST_IMPL
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if (Impl == nullptr)
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return;
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return Impl->startInterval(O, Name);
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#endif // if !HAVE_ANY_SIGNPOST_IMPL
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}
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void SignpostEmitter::endInterval(const void *O, StringRef Name) {
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#if HAVE_ANY_SIGNPOST_IMPL
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if (Impl == nullptr)
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return;
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Impl->endInterval(O, Name);
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#endif // if !HAVE_ANY_SIGNPOST_IMPL
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}
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