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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_LIBARTBASE_BASE_SYSTRACE_H_
#define ART_LIBARTBASE_BASE_SYSTRACE_H_
#include <sstream>
#include <string>
#include "android-base/stringprintf.h"
#include "macros.h"
#include "palette/palette.h"
namespace art {
inline bool ATraceEnabled() {
#ifdef NDEBUG
return false;
#else
bool enabled = false;
if (UNLIKELY(PaletteTraceEnabled(&enabled) == PALETTE_STATUS_OK && enabled)) {
return true;
} else {
return false;
}
#endif
}
inline void ATraceBegin(const char* name) {
(void)name;
#ifndef NDEBUG
PaletteTraceBegin(name);
#endif
}
inline void ATraceEnd() {
#ifndef NDEBUG
PaletteTraceEnd();
#endif
}
inline void ATraceIntegerValue(const char* name, int32_t value) {
(void)name;
(void)value;
#ifndef NDEBUG
PaletteTraceIntegerValue(name, value);
#endif
}
class ScopedTrace {
public:
explicit ScopedTrace(const char* name) {
ATraceBegin(name);
}
template <typename Fn>
explicit ScopedTrace(Fn fn) {
if (UNLIKELY(ATraceEnabled())) {
ATraceBegin(fn().c_str());
}
}
explicit ScopedTrace(const std::string& name) : ScopedTrace(name.c_str()) {}
~ScopedTrace() {
ATraceEnd();
}
};
// Helper for the SCOPED_TRACE macro. Do not use directly.
class ScopedTraceNoStart {
public:
ScopedTraceNoStart() {
}
~ScopedTraceNoStart() {
ATraceEnd();
}
// Message helper for the macro. Do not use directly.
class ScopedTraceMessageHelper {
public:
ScopedTraceMessageHelper() {
}
~ScopedTraceMessageHelper() {
ATraceBegin(buffer_.str().c_str());
}
std::ostream& stream() {
return buffer_;
}
private:
std::ostringstream buffer_;
};
};
#define SCOPED_TRACE \
::art::ScopedTraceNoStart APPEND_TOKENS_AFTER_EVAL(trace, __LINE__) ; \
(ATraceEnabled()) && ::art::ScopedTraceNoStart::ScopedTraceMessageHelper().stream()
} // namespace art
#endif // ART_LIBARTBASE_BASE_SYSTRACE_H_
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