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//===-- Signposts.cpp - Interval debug annotations ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Signposts.h"
#include "llvm/Support/Timer.h"
#include "llvm/Config/config.h"
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Mutex.h"
#error #include <os/signpost.h>
#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
using namespace llvm;
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
namespace {
os_log_t *LogCreator() {
os_log_t *X = new os_log_t;
*X = os_log_create("org.llvm.signposts", OS_LOG_CATEGORY_POINTS_OF_INTEREST);
return X;
}
void LogDeleter(os_log_t *X) {
os_release(*X);
delete X;
}
} // end anonymous namespace
namespace llvm {
class SignpostEmitterImpl {
using LogPtrTy = std::unique_ptr<os_log_t, std::function<void(os_log_t *)>>;
using LogTy = LogPtrTy::element_type;
LogPtrTy SignpostLog;
DenseMap<const void *, os_signpost_id_t> Signposts;
sys::SmartMutex<true> Mutex;
LogTy &getLogger() const { return *SignpostLog; }
os_signpost_id_t getSignpostForObject(const void *O) {
sys::SmartScopedLock<true> Lock(Mutex);
const auto &I = Signposts.find(O);
if (I != Signposts.end())
return I->second;
const auto &Inserted = Signposts.insert(
std::make_pair(O, os_signpost_id_make_with_pointer(getLogger(), O)));
return Inserted.first->second;
}
public:
SignpostEmitterImpl() : SignpostLog(LogCreator(), LogDeleter), Signposts() {}
bool isEnabled() const { return os_signpost_enabled(*SignpostLog); }
void startInterval(const void *O, llvm::StringRef Name) {
if (isEnabled()) {
// Both strings used here are required to be constant literal strings.
os_signpost_interval_begin(getLogger(), getSignpostForObject(O),
"LLVM Timers", "Begin %s", Name.data());
}
}
void endInterval(const void *O, llvm::StringRef Name) {
if (isEnabled()) {
// Both strings used here are required to be constant literal strings.
os_signpost_interval_end(getLogger(), getSignpostForObject(O),
"LLVM Timers", "End %s", Name.data());
}
}
};
} // end namespace llvm
#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#define HAVE_ANY_SIGNPOST_IMPL 1
#else
#define HAVE_ANY_SIGNPOST_IMPL 0
#endif
SignpostEmitter::SignpostEmitter() {
#if HAVE_ANY_SIGNPOST_IMPL
Impl = new SignpostEmitterImpl();
#else // if HAVE_ANY_SIGNPOST_IMPL
Impl = nullptr;
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
SignpostEmitter::~SignpostEmitter() {
#if HAVE_ANY_SIGNPOST_IMPL
delete Impl;
#endif // if HAVE_ANY_SIGNPOST_IMPL
}
bool SignpostEmitter::isEnabled() const {
#if HAVE_ANY_SIGNPOST_IMPL
return Impl->isEnabled();
#else
return false;
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
void SignpostEmitter::startInterval(const void *O, StringRef Name) {
#if HAVE_ANY_SIGNPOST_IMPL
if (Impl == nullptr)
return;
return Impl->startInterval(O, Name);
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
void SignpostEmitter::endInterval(const void *O, StringRef Name) {
#if HAVE_ANY_SIGNPOST_IMPL
if (Impl == nullptr)
return;
Impl->endInterval(O, Name);
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
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