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//===-- Instrumentation.h ---------------------------------------*- C++ -*-===//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_UTILITY_INSTRUMENTATION_H
#define LLDB_UTILITY_INSTRUMENTATION_H
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/Logging.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/ErrorHandling.h"
#include <map>
#include <thread>
#include <type_traits>
namespace lldb_private {
namespace instrumentation {
template <typename T,
typename std::enable_if<std::is_fundamental<T>::value, int>::type = 0>
inline void stringify_append(llvm::raw_string_ostream &ss, const T &t) {
ss << t;
}
template <typename T, typename std::enable_if<!std::is_fundamental<T>::value,
int>::type = 0>
inline void stringify_append(llvm::raw_string_ostream &ss, const T &t) {
ss << &t;
}
template <typename T>
inline void stringify_append(llvm::raw_string_ostream &ss, T *t) {
ss << reinterpret_cast<void *>(t);
}
template <typename T>
inline void stringify_append(llvm::raw_string_ostream &ss, const T *t) {
ss << reinterpret_cast<const void *>(t);
}
template <>
inline void stringify_append<char>(llvm::raw_string_ostream &ss,
const char *t) {
ss << '\"' << t << '\"';
}
template <>
inline void stringify_append<std::nullptr_t>(llvm::raw_string_ostream &ss,
const std::nullptr_t &t) {
ss << "\"nullptr\"";
}
template <typename Head>
inline void stringify_helper(llvm::raw_string_ostream &ss, const Head &head) {
stringify_append(ss, head);
}
template <typename Head, typename... Tail>
inline void stringify_helper(llvm::raw_string_ostream &ss, const Head &head,
const Tail &...tail) {
stringify_append(ss, head);
ss << ", ";
stringify_helper(ss, tail...);
}
template <typename... Ts> inline std::string stringify_args(const Ts &...ts) {
std::string buffer;
llvm::raw_string_ostream ss(buffer);
stringify_helper(ss, ts...);
return ss.str();
}
/// RAII object for instrumenting LLDB API functions.
class Instrumenter {
public:
Instrumenter(llvm::StringRef pretty_func, std::string &&pretty_args = {});
~Instrumenter();
private:
void UpdateBoundary();
llvm::StringRef m_pretty_func;
/// Whether this function call was the one crossing the API boundary.
bool m_local_boundary = false;
};
} // namespace instrumentation
} // namespace lldb_private
#define LLDB_INSTRUMENT() \
lldb_private::instrumentation::Instrumenter _instr(LLVM_PRETTY_FUNCTION);
#define LLDB_INSTRUMENT_VA(...) \
lldb_private::instrumentation::Instrumenter _instr( \
LLVM_PRETTY_FUNCTION, \
lldb_private::instrumentation::stringify_args(__VA_ARGS__));
#endif // LLDB_UTILITY_INSTRUMENTATION_H
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