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#include "ndk_main.h"
#include "tensorflow/lite/kernels/register.h"
#include "tensorflow/lite/model.h"
#include "tflite/Assert.h"
#include "tflite/Session.h"
#include "tflite/InterpreterSession.h"
#include "tflite/NNAPISession.h"
#include "tflite/ext/kernels/register.h"
#include "misc/benchmark.h"
#include <boost/accumulators/accumulators.hpp>
#include <boost/accumulators/statistics/stats.hpp>
#include <boost/accumulators/statistics/mean.hpp>
#include <boost/accumulators/statistics/min.hpp>
#include <boost/accumulators/statistics/max.hpp>
#include <cassert>
#include <chrono>
#include <sstream>
#include <android/log.h>
using namespace tflite;
using namespace tflite::ops::builtin;
static StderrReporter error_reporter;
static std::unique_ptr<FlatBufferModel> model;
inline void setText(JNIEnv *env, jobject thisObj, const std::string &message)
{
jclass thisClass = env->GetObjectClass(thisObj);
jmethodID setTextMethod = env->GetMethodID(thisClass, "setText", "(Ljava/lang/String;)V");
assert(setTextMethod != nullptr);
env->CallVoidMethod(thisObj, setTextMethod, env->NewStringUTF(message.c_str()));
}
inline void setTitle(JNIEnv *env, jobject thisObj, const std::string &message)
{
jclass thisClass = env->GetObjectClass(thisObj);
jmethodID setTextMethod = env->GetMethodID(thisClass, "setTitle", "(Ljava/lang/String;)V");
assert(setTextMethod != nullptr);
env->CallVoidMethod(thisObj, setTextMethod, env->NewStringUTF(message.c_str()));
// Clear message
setText(env, thisObj, "");
}
inline void setText(JNIEnv *env, jobject thisObj, const std::stringstream &ss)
{
setText(env, thisObj, ss.str());
}
inline std::unique_ptr<FlatBufferModel> loadModel(JNIEnv *env, jobject thisObj,
jobject model_buffer)
{
const char *model_base = static_cast<char *>(env->GetDirectBufferAddress(model_buffer));
jlong model_size = env->GetDirectBufferCapacity(model_buffer);
return FlatBufferModel::BuildFromBuffer(model_base, static_cast<size_t>(model_size),
&error_reporter);
}
struct Activity
{
virtual ~Activity() = default;
virtual void prepare(void) const = 0;
virtual void run(void) const = 0;
virtual void teardown(void) const = 0;
};
struct LiteActivity final : public Activity
{
public:
LiteActivity(nnfw::tflite::Session &sess) : _sess(sess)
{
// DO NOTHING
}
public:
void prepare(void) const override { _sess.prepare(); }
void run(void) const override { _sess.run(); }
void teardown(void) const override { _sess.teardown(); }
private:
nnfw::tflite::Session &_sess;
};
struct SimpleActivity final : public Activity
{
public:
SimpleActivity(const std::function<void(void)> &fn) : _fn{fn}
{
// DO NOTHING
}
public:
void prepare(void) const override {}
void run(void) const override { _fn(); }
void teardown(void) const override {}
private:
std::function<void(void)> _fn;
};
inline void runBenchmark(JNIEnv *env, jobject thisObj, Activity &act)
{
auto runTrial = [&](void) {
std::chrono::milliseconds elapsed(0);
act.prepare();
nnfw::misc::benchmark::measure(elapsed) << [&](void) { act.run(); };
act.teardown();
return elapsed;
};
// Warm-up
for (uint32_t n = 0; n < 3; ++n)
{
auto elapsed = runTrial();
std::stringstream ss;
ss << "Warm-up #" << n << " takes " << elapsed.count() << "ms" << std::endl;
setText(env, thisObj, ss);
}
// Measure
using namespace boost::accumulators;
accumulator_set<double, stats<tag::mean, tag::min, tag::max>> acc;
for (uint32_t n = 0; n < 100; ++n)
{
auto elapsed = runTrial();
std::stringstream ss;
ss << "Iteration #" << n << " takes " << elapsed.count() << "ms" << std::endl;
setText(env, thisObj, ss);
acc(elapsed.count());
}
std::stringstream ss;
ss << "Average is " << mean(acc) << "ms" << std::endl;
ss << "Min is " << min(acc) << "ms" << std::endl;
ss << "Max is " << max(acc) << "ms" << std::endl;
setText(env, thisObj, ss);
}
JNIEXPORT void JNICALL Java_com_ndk_tflbench_MainActivity_runInterpreterBenchmark(
JNIEnv *env, jobject thisObj, jobject model_buffer)
{
setTitle(env, thisObj, "Running Interpreter Benchmark");
auto model = loadModel(env, thisObj, model_buffer);
assert(model != nullptr);
nnfw::tflite::BuiltinOpResolver resolver;
InterpreterBuilder builder(*model, resolver);
std::unique_ptr<Interpreter> interpreter;
TFLITE_ENSURE(builder(&interpreter));
interpreter->SetNumThreads(-1);
nnfw::tflite::InterpreterSession sess(interpreter.get());
LiteActivity act{sess};
runBenchmark(env, thisObj, act);
}
static void runNNAPIBenchmark(JNIEnv *env, jobject thisObj, jobject model_buffer)
{
auto model = loadModel(env, thisObj, model_buffer);
assert(model != nullptr);
nnfw::tflite::BuiltinOpResolver resolver;
InterpreterBuilder builder(*model, resolver);
std::unique_ptr<Interpreter> interpreter;
TFLITE_ENSURE(builder(&interpreter));
nnfw::tflite::NNAPISession sess(interpreter.get());
LiteActivity act{sess};
runBenchmark(env, thisObj, act);
}
JNIEXPORT void JNICALL Java_com_ndk_tflbench_MainActivity_runNNAPIBenchmark(JNIEnv *env,
jobject thisObj,
jobject model_buffer)
{
setTitle(env, thisObj, "Running NNAPI Benchmark");
try
{
runNNAPIBenchmark(env, thisObj, model_buffer);
}
catch (const std::exception &ex)
{
std::stringstream ss;
ss << "Caught an exception " << ex.what();
setText(env, thisObj, ss);
}
}
JNIEXPORT jstring JNICALL Java_com_ndk_tflbench_MainActivity_getModelName(JNIEnv *env,
jobject thisObj)
{
return env->NewStringUTF(MODEL_NAME);
}
#define TF_ENSURE(e) \
{ \
if (!(e).ok()) \
{ \
throw std::runtime_error{"'" #e "' FAILED"}; \
} \
}
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