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/*
* Copyright (C) 2012-2014 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.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>
#ifndef BIONIC_BENCHMARK_H_
#define BIONIC_BENCHMARK_H_
namespace testing {
class Benchmark;
template <typename T> class BenchmarkWantsArg;
template <typename T> class BenchmarkWithArg;
void BenchmarkRegister(Benchmark* bm);
int PrettyPrintInt(char* str, int len, unsigned int arg);
class Benchmark {
public:
Benchmark(const char* name, void (*fn)(int)) : name_(strdup(name)), fn_(fn) {
BenchmarkRegister(this);
}
explicit Benchmark(const char* name) : name_(strdup(name)), fn_(NULL) {}
virtual ~Benchmark() {
free(name_);
}
const char* Name() { return name_; }
virtual const char* ArgName() { return NULL; }
virtual void RunFn(int iterations) { fn_(iterations); }
protected:
char* name_;
private:
void (*fn_)(int);
};
template <typename T>
class BenchmarkWantsArgBase : public Benchmark {
public:
BenchmarkWantsArgBase(const char* name, void (*fn)(int, T)) : Benchmark(name) {
fn_arg_ = fn;
}
BenchmarkWantsArgBase<T>* Arg(const char* arg_name, T arg) {
BenchmarkRegister(new BenchmarkWithArg<T>(name_, fn_arg_, arg_name, arg));
return this;
}
protected:
virtual void RunFn(int) { printf("can't run arg benchmark %s without arg\n", Name()); }
void (*fn_arg_)(int, T);
};
template <typename T>
class BenchmarkWithArg : public BenchmarkWantsArg<T> {
public:
BenchmarkWithArg(const char* name, void (*fn)(int, T), const char* arg_name, T arg) :
BenchmarkWantsArg<T>(name, fn), arg_(arg) {
arg_name_ = strdup(arg_name);
}
virtual ~BenchmarkWithArg() {
free(arg_name_);
}
virtual const char* ArgName() { return arg_name_; }
protected:
virtual void RunFn(int iterations) { BenchmarkWantsArg<T>::fn_arg_(iterations, arg_); }
private:
T arg_;
char* arg_name_;
};
template <typename T>
class BenchmarkWantsArg : public BenchmarkWantsArgBase<T> {
public:
BenchmarkWantsArg<T>(const char* name, void (*fn)(int, T)) :
BenchmarkWantsArgBase<T>(name, fn) { }
};
template <>
class BenchmarkWantsArg<int> : public BenchmarkWantsArgBase<int> {
public:
BenchmarkWantsArg<int>(const char* name, void (*fn)(int, int)) :
BenchmarkWantsArgBase<int>(name, fn) { }
BenchmarkWantsArg<int>* Arg(int arg) {
char arg_name[100];
PrettyPrintInt(arg_name, sizeof(arg_name), arg);
BenchmarkRegister(new BenchmarkWithArg<int>(name_, fn_arg_, arg_name, arg));
return this;
}
};
static inline Benchmark* BenchmarkFactory(const char* name, void (*fn)(int)) {
return new Benchmark(name, fn);
}
template <typename T>
static inline BenchmarkWantsArg<T>* BenchmarkFactory(const char* name, void (*fn)(int, T)) {
return new BenchmarkWantsArg<T>(name, fn);
}
} // namespace testing
template <typename T>
static inline void BenchmarkAddArg(::testing::Benchmark* b, const char* name, T arg) {
::testing::BenchmarkWantsArg<T>* ba;
ba = static_cast< ::testing::BenchmarkWantsArg<T>* >(b);
ba->Arg(name, arg);
}
void SetBenchmarkBytesProcessed(uint64_t);
void ResetBenchmarkTiming(void);
void StopBenchmarkTiming(void);
void StartBenchmarkTiming(void);
void StartBenchmarkTiming(uint64_t);
void StopBenchmarkTiming(uint64_t);
#define BENCHMARK(f) \
static ::testing::Benchmark* _benchmark_##f __attribute__((unused)) = /* NOLINT */ \
(::testing::Benchmark*)::testing::BenchmarkFactory(#f, f) /* NOLINT */
#endif // BIONIC_BENCHMARK_H_
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