8e7241fdde
Rebuilding (after touching certain files) is crazy slow because includes are out of control. Many of these files we need to rebuild are cctests which pull in more includes than they need. BUG=v8:5294 Review-Url: https://codereview.chromium.org/2304553002 Cr-Commit-Position: refs/heads/master@{#39080}
142 lines
4.2 KiB
C++
142 lines
4.2 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Tests of sampler functionalities.
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#include "src/libsampler/sampler.h"
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#include "src/base/platform/platform.h"
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#include "src/base/platform/time.h"
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#include "test/cctest/cctest.h"
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namespace v8 {
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namespace sampler {
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namespace {
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class TestSamplingThread : public base::Thread {
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public:
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static const int kSamplerThreadStackSize = 64 * 1024;
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explicit TestSamplingThread(Sampler* sampler)
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: Thread(base::Thread::Options("TestSamplingThread",
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kSamplerThreadStackSize)),
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sampler_(sampler) {}
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// Implement Thread::Run().
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void Run() override {
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while (sampler_->IsProfiling()) {
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sampler_->DoSample();
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base::OS::Sleep(base::TimeDelta::FromMilliseconds(1));
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}
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}
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private:
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Sampler* sampler_;
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};
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class TestSampler : public Sampler {
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public:
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explicit TestSampler(Isolate* isolate) : Sampler(isolate) {}
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void SampleStack(const v8::RegisterState& regs) override {
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void* frames[kMaxFramesCount];
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SampleInfo sample_info;
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isolate()->GetStackSample(regs, frames, kMaxFramesCount, &sample_info);
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if (is_counting_samples_) {
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if (sample_info.vm_state == JS) ++js_sample_count_;
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if (sample_info.vm_state == EXTERNAL) ++external_sample_count_;
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}
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}
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};
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class TestApiCallbacks {
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public:
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TestApiCallbacks() {}
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static void Getter(v8::Local<v8::String> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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}
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static void Setter(v8::Local<v8::String> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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}
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};
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static void RunSampler(v8::Local<v8::Context> env,
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v8::Local<v8::Function> function,
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v8::Local<v8::Value> argv[], int argc,
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unsigned min_js_samples = 0,
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unsigned min_external_samples = 0) {
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Sampler::SetUp();
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TestSampler* sampler = new TestSampler(env->GetIsolate());
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TestSamplingThread* thread = new TestSamplingThread(sampler);
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sampler->IncreaseProfilingDepth();
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sampler->Start();
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sampler->StartCountingSamples();
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thread->StartSynchronously();
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do {
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function->Call(env, env->Global(), argc, argv).ToLocalChecked();
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} while (sampler->js_sample_count() < min_js_samples ||
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sampler->external_sample_count() < min_external_samples);
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sampler->Stop();
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sampler->DecreaseProfilingDepth();
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thread->Join();
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delete thread;
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delete sampler;
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Sampler::TearDown();
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}
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} // namespace
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static const char* sampler_test_source = "function start(count) {\n"
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" for (var i = 0; i < count; i++) {\n"
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" var o = instance.foo;\n"
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" instance.foo = o + 1;\n"
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" }\n"
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"}\n";
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static v8::Local<v8::Function> GetFunction(v8::Local<v8::Context> env,
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const char* name) {
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return v8::Local<v8::Function>::Cast(
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env->Global()->Get(env, v8_str(name)).ToLocalChecked());
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}
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TEST(LibSamplerCollectSample) {
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LocalContext env;
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v8::Isolate* isolate = env->GetIsolate();
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v8::HandleScope scope(isolate);
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v8::Local<v8::FunctionTemplate> func_template =
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v8::FunctionTemplate::New(isolate);
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v8::Local<v8::ObjectTemplate> instance_template =
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func_template->InstanceTemplate();
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TestApiCallbacks accessors;
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v8::Local<v8::External> data =
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v8::External::New(isolate, &accessors);
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instance_template->SetAccessor(v8_str("foo"), &TestApiCallbacks::Getter,
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&TestApiCallbacks::Setter, data);
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v8::Local<v8::Function> func =
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func_template->GetFunction(env.local()).ToLocalChecked();
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v8::Local<v8::Object> instance =
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func->NewInstance(env.local()).ToLocalChecked();
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env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust();
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CompileRun(sampler_test_source);
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v8::Local<v8::Function> function = GetFunction(env.local(), "start");
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int32_t repeat_count = 100;
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v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};
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RunSampler(env.local(), function, args, arraysize(args), 100, 100);
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}
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} // namespace sampler
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} // namespace v8
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