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2fb919f4b7
v8/test/cctest/test-cpu-profiler.cc
Peter Marshall 2fb919f4b7 [cpu-profiler] Add a basic test for multiple isolates profiling 
We don't have any tests which run multiple isolates concurrently and
starts a profiler in each of them. This test is a basic starting point
so that we can check for flakiness caused by races or interrupts.

The profiling mechanisms should be totally separate for two isolates,
so this should (theoretically) not cause any problems.

A use case for multiple isolates is for workers or in Node via cloud
functions, so we should get some more coverage here.

Change-Id: I0ca6d1296bc7bae7238c51b4487259d09e38d690
Reviewed-on: https://chromium-review.googlesource.com/c/1309823
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57207}
2018-11-02 10:35:24 +00:00

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// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Tests of profiles generator and utilities.
#include <limits>
#include <memory>
#include "src/v8.h"
#include "include/v8-profiler.h"
#include "src/api-inl.h"
#include "src/base/platform/platform.h"
#include "src/deoptimizer.h"
#include "src/libplatform/default-platform.h"
#include "src/objects-inl.h"
#include "src/profiler/cpu-profiler-inl.h"
#include "src/profiler/profiler-listener.h"
#include "src/utils.h"
#include "test/cctest/cctest.h"
#include "test/cctest/profiler-extension.h"
#include "include/libplatform/v8-tracing.h"
#include "src/tracing/trace-event.h"
namespace v8 {
namespace internal {
namespace test_cpu_profiler {
// Helper methods
static v8::Local<v8::Function> GetFunction(v8::Local<v8::Context> env,
const char* name) {
return v8::Local<v8::Function>::Cast(
env->Global()->Get(env, v8_str(name)).ToLocalChecked());
}
static size_t offset(const char* src, const char* substring) {
const char* it = strstr(src, substring);
CHECK(it);
return static_cast<size_t>(it - src);
}
template <typename A, typename B>
static int dist(A a, B b) {
return abs(static_cast<int>(a) - static_cast<int>(b));
}
static const char* reason(const i::DeoptimizeReason reason) {
return i::DeoptimizeReasonToString(reason);
}
TEST(StartStop) {
i::Isolate* isolate = CcTest::i_isolate();
CpuProfilesCollection profiles(isolate);
ProfileGenerator generator(&profiles);
std::unique_ptr<ProfilerEventsProcessor> processor(
new SamplingEventsProcessor(isolate, &generator,
v8::base::TimeDelta::FromMicroseconds(100)));
processor->Start();
processor->StopSynchronously();
}
static void EnqueueTickSampleEvent(ProfilerEventsProcessor* proc,
i::Address frame1,
i::Address frame2 = kNullAddress,
i::Address frame3 = kNullAddress) {
v8::internal::TickSample sample;
sample.pc = reinterpret_cast<void*>(frame1);
sample.tos = reinterpret_cast<void*>(frame1);
sample.frames_count = 0;
if (frame2 != kNullAddress) {
sample.stack[0] = reinterpret_cast<void*>(frame2);
sample.frames_count = 1;
}
if (frame3 != kNullAddress) {
sample.stack[1] = reinterpret_cast<void*>(frame3);
sample.frames_count = 2;
}
sample.timestamp = base::TimeTicks::HighResolutionNow();
proc->AddSample(sample);
}
namespace {
class TestSetup {
public:
TestSetup()
: old_flag_prof_browser_mode_(i::FLAG_prof_browser_mode) {
i::FLAG_prof_browser_mode = false;
}
~TestSetup() {
i::FLAG_prof_browser_mode = old_flag_prof_browser_mode_;
}
private:
bool old_flag_prof_browser_mode_;
};
} // namespace
i::AbstractCode* CreateCode(LocalContext* env) {
static int counter = 0;
i::EmbeddedVector<char, 256> script;
i::EmbeddedVector<char, 32> name;
i::SNPrintF(name, "function_%d", ++counter);
const char* name_start = name.start();
i::SNPrintF(script,
"function %s() {\n"
"var counter = 0;\n"
"for (var i = 0; i < %d; ++i) counter += i;\n"
"return '%s_' + counter;\n"
"}\n"
"%s();\n", name_start, counter, name_start, name_start);
CompileRun(script.start());
i::Handle<i::JSFunction> fun = i::Handle<i::JSFunction>::cast(
v8::Utils::OpenHandle(*GetFunction(env->local(), name_start)));
return fun->abstract_code();
}
TEST(CodeEvents) {
CcTest::InitializeVM();
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
i::Factory* factory = isolate->factory();
TestSetup test_setup;
i::HandleScope scope(isolate);
i::AbstractCode* aaa_code = CreateCode(&env);
i::AbstractCode* comment_code = CreateCode(&env);
i::AbstractCode* comment2_code = CreateCode(&env);
i::AbstractCode* moved_code = CreateCode(&env);
CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate);
ProfileGenerator* generator = new ProfileGenerator(profiles);
ProfilerEventsProcessor* processor = new SamplingEventsProcessor(
isolate, generator, v8::base::TimeDelta::FromMicroseconds(100));
processor->Start();
ProfilerListener profiler_listener(isolate, processor);
isolate->logger()->AddCodeEventListener(&profiler_listener);
// Enqueue code creation events.
const char* aaa_str = "aaa";
i::Handle<i::String> aaa_name = factory->NewStringFromAsciiChecked(aaa_str);
profiler_listener.CodeCreateEvent(i::Logger::FUNCTION_TAG, aaa_code,
*aaa_name);
profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, comment_code,
"comment");
profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, comment2_code,
"comment2");
profiler_listener.CodeMoveEvent(comment2_code, moved_code);
// Enqueue a tick event to enable code events processing.
EnqueueTickSampleEvent(processor, aaa_code->InstructionStart());
isolate->logger()->RemoveCodeEventListener(&profiler_listener);
processor->StopSynchronously();
// Check the state of profile generator.
CodeEntry* aaa =
generator->code_map()->FindEntry(aaa_code->InstructionStart());
CHECK(aaa);
CHECK_EQ(0, strcmp(aaa_str, aaa->name()));
CodeEntry* comment =
generator->code_map()->FindEntry(comment_code->InstructionStart());
CHECK(comment);
CHECK_EQ(0, strcmp("comment", comment->name()));
CHECK(!generator->code_map()->FindEntry(comment2_code->InstructionStart()));
CodeEntry* comment2 =
generator->code_map()->FindEntry(moved_code->InstructionStart());
CHECK(comment2);
CHECK_EQ(0, strcmp("comment2", comment2->name()));
}
template<typename T>
static int CompareProfileNodes(const T* p1, const T* p2) {
return strcmp((*p1)->entry()->name(), (*p2)->entry()->name());
}
TEST(TickEvents) {
TestSetup test_setup;
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
i::HandleScope scope(isolate);
i::AbstractCode* frame1_code = CreateCode(&env);
i::AbstractCode* frame2_code = CreateCode(&env);
i::AbstractCode* frame3_code = CreateCode(&env);
CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate);
ProfileGenerator* generator = new ProfileGenerator(profiles);
ProfilerEventsProcessor* processor =
new SamplingEventsProcessor(CcTest::i_isolate(), generator,
v8::base::TimeDelta::FromMicroseconds(100));
CpuProfiler profiler(isolate, profiles, generator, processor);
profiles->StartProfiling("", false);
processor->Start();
ProfilerListener profiler_listener(isolate, processor);
isolate->logger()->AddCodeEventListener(&profiler_listener);
profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, frame1_code, "bbb");
profiler_listener.CodeCreateEvent(i::Logger::STUB_TAG, frame2_code, "ccc");
profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, frame3_code, "ddd");
EnqueueTickSampleEvent(processor, frame1_code->raw_instruction_start());
EnqueueTickSampleEvent(
processor,
frame2_code->raw_instruction_start() + frame2_code->ExecutableSize() / 2,
frame1_code->raw_instruction_start() + frame1_code->ExecutableSize() / 2);
EnqueueTickSampleEvent(processor, frame3_code->raw_instruction_end() - 1,
frame2_code->raw_instruction_end() - 1,
frame1_code->raw_instruction_end() - 1);
isolate->logger()->RemoveCodeEventListener(&profiler_listener);
processor->StopSynchronously();
CpuProfile* profile = profiles->StopProfiling("");
CHECK(profile);
// Check call trees.
const std::vector<ProfileNode*>* top_down_root_children =
profile->top_down()->root()->children();
CHECK_EQ(1, top_down_root_children->size());
CHECK_EQ(0, strcmp("bbb", top_down_root_children->back()->entry()->name()));
const std::vector<ProfileNode*>* top_down_bbb_children =
top_down_root_children->back()->children();
CHECK_EQ(1, top_down_bbb_children->size());
CHECK_EQ(0, strcmp("ccc", top_down_bbb_children->back()->entry()->name()));
const std::vector<ProfileNode*>* top_down_stub_children =
top_down_bbb_children->back()->children();
CHECK_EQ(1, top_down_stub_children->size());
CHECK_EQ(0, strcmp("ddd", top_down_stub_children->back()->entry()->name()));
const std::vector<ProfileNode*>* top_down_ddd_children =
top_down_stub_children->back()->children();
CHECK(top_down_ddd_children->empty());
}
// http://crbug/51594
// This test must not crash.
TEST(CrashIfStoppingLastNonExistentProfile) {
CcTest::InitializeVM();
TestSetup test_setup;
std::unique_ptr<CpuProfiler> profiler(new CpuProfiler(CcTest::i_isolate()));
profiler->StartProfiling("1");
profiler->StopProfiling("2");
profiler->StartProfiling("1");
profiler->StopProfiling("");
}
// http://code.google.com/p/v8/issues/detail?id=1398
// Long stacks (exceeding max frames limit) must not be erased.
TEST(Issue1398) {
TestSetup test_setup;
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
i::HandleScope scope(isolate);
i::AbstractCode* code = CreateCode(&env);
CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate);
ProfileGenerator* generator = new ProfileGenerator(profiles);
ProfilerEventsProcessor* processor =
new SamplingEventsProcessor(CcTest::i_isolate(), generator,
v8::base::TimeDelta::FromMicroseconds(100));
CpuProfiler profiler(isolate, profiles, generator, processor);
profiles->StartProfiling("", false);
processor->Start();
ProfilerListener profiler_listener(isolate, processor);
profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, code, "bbb");
v8::internal::TickSample sample;
sample.pc = reinterpret_cast<void*>(code->InstructionStart());
sample.tos = nullptr;
sample.frames_count = v8::TickSample::kMaxFramesCount;
for (unsigned i = 0; i < sample.frames_count; ++i) {
sample.stack[i] = reinterpret_cast<void*>(code->InstructionStart());
}
sample.timestamp = base::TimeTicks::HighResolutionNow();
processor->AddSample(sample);
processor->StopSynchronously();
CpuProfile* profile = profiles->StopProfiling("");
CHECK(profile);
unsigned actual_depth = 0;
const ProfileNode* node = profile->top_down()->root();
while (!node->children()->empty()) {
node = node->children()->back();
++actual_depth;
}
CHECK_EQ(1 + v8::TickSample::kMaxFramesCount, actual_depth); // +1 for PC.
}
TEST(DeleteAllCpuProfiles) {
CcTest::InitializeVM();
TestSetup test_setup;
std::unique_ptr<CpuProfiler> profiler(new CpuProfiler(CcTest::i_isolate()));
CHECK_EQ(0, profiler->GetProfilesCount());
profiler->DeleteAllProfiles();
CHECK_EQ(0, profiler->GetProfilesCount());
profiler->StartProfiling("1");
profiler->StopProfiling("1");
CHECK_EQ(1, profiler->GetProfilesCount());
profiler->DeleteAllProfiles();
CHECK_EQ(0, profiler->GetProfilesCount());
profiler->StartProfiling("1");
profiler->StartProfiling("2");
profiler->StopProfiling("2");
profiler->StopProfiling("1");
CHECK_EQ(2, profiler->GetProfilesCount());
profiler->DeleteAllProfiles();
CHECK_EQ(0, profiler->GetProfilesCount());
// Test profiling cancellation by the 'delete' command.
profiler->StartProfiling("1");
profiler->StartProfiling("2");
CHECK_EQ(0, profiler->GetProfilesCount());
profiler->DeleteAllProfiles();
CHECK_EQ(0, profiler->GetProfilesCount());
}
static bool FindCpuProfile(v8::CpuProfiler* v8profiler,
const v8::CpuProfile* v8profile) {
i::CpuProfiler* profiler = reinterpret_cast<i::CpuProfiler*>(v8profiler);
const i::CpuProfile* profile =
reinterpret_cast<const i::CpuProfile*>(v8profile);
int length = profiler->GetProfilesCount();
for (int i = 0; i < length; i++) {
if (profile == profiler->GetProfile(i))
return true;
}
return false;
}
TEST(DeleteCpuProfile) {
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate());
i::CpuProfiler* iprofiler = reinterpret_cast<i::CpuProfiler*>(cpu_profiler);
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::Local<v8::String> name1 = v8_str("1");
cpu_profiler->StartProfiling(name1);
v8::CpuProfile* p1 = cpu_profiler->StopProfiling(name1);
CHECK(p1);
CHECK_EQ(1, iprofiler->GetProfilesCount());
CHECK(FindCpuProfile(cpu_profiler, p1));
p1->Delete();
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::Local<v8::String> name2 = v8_str("2");
cpu_profiler->StartProfiling(name2);
v8::CpuProfile* p2 = cpu_profiler->StopProfiling(name2);
CHECK(p2);
CHECK_EQ(1, iprofiler->GetProfilesCount());
CHECK(FindCpuProfile(cpu_profiler, p2));
v8::Local<v8::String> name3 = v8_str("3");
cpu_profiler->StartProfiling(name3);
v8::CpuProfile* p3 = cpu_profiler->StopProfiling(name3);
CHECK(p3);
CHECK_EQ(2, iprofiler->GetProfilesCount());
CHECK_NE(p2, p3);
CHECK(FindCpuProfile(cpu_profiler, p3));
CHECK(FindCpuProfile(cpu_profiler, p2));
p2->Delete();
CHECK_EQ(1, iprofiler->GetProfilesCount());
CHECK(!FindCpuProfile(cpu_profiler, p2));
CHECK(FindCpuProfile(cpu_profiler, p3));
p3->Delete();
CHECK_EQ(0, iprofiler->GetProfilesCount());
cpu_profiler->Dispose();
}
TEST(ProfileStartEndTime) {
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate());
v8::Local<v8::String> profile_name = v8_str("test");
cpu_profiler->StartProfiling(profile_name);
const v8::CpuProfile* profile = cpu_profiler->StopProfiling(profile_name);
CHECK(profile->GetStartTime() <= profile->GetEndTime());
cpu_profiler->Dispose();
}
class ProfilerHelper {
public:
explicit ProfilerHelper(const v8::Local<v8::Context>& context)
: context_(context),
profiler_(v8::CpuProfiler::New(context->GetIsolate())) {
i::ProfilerExtension::set_profiler(profiler_);
}
~ProfilerHelper() {
i::ProfilerExtension::set_profiler(static_cast<CpuProfiler*>(nullptr));
profiler_->Dispose();
}
typedef v8::CpuProfilingMode ProfilingMode;
v8::CpuProfile* Run(v8::Local<v8::Function> function,
v8::Local<v8::Value> argv[], int argc,
unsigned min_js_samples = 0,
unsigned min_external_samples = 0,
bool collect_samples = false,
ProfilingMode mode = ProfilingMode::kLeafNodeLineNumbers);
v8::CpuProfiler* profiler() { return profiler_; }
private:
v8::Local<v8::Context> context_;
v8::CpuProfiler* profiler_;
};
v8::CpuProfile* ProfilerHelper::Run(v8::Local<v8::Function> function,
v8::Local<v8::Value> argv[], int argc,
unsigned min_js_samples,
unsigned min_external_samples,
bool collect_samples, ProfilingMode mode) {
v8::Local<v8::String> profile_name = v8_str("my_profile");
profiler_->SetSamplingInterval(100);
profiler_->StartProfiling(profile_name, mode, collect_samples);
v8::internal::CpuProfiler* iprofiler =
reinterpret_cast<v8::internal::CpuProfiler*>(profiler_);
v8::sampler::Sampler* sampler =
reinterpret_cast<i::SamplingEventsProcessor*>(iprofiler->processor())
->sampler();
sampler->StartCountingSamples();
do {
function->Call(context_, context_->Global(), argc, argv).ToLocalChecked();
} while (sampler->js_sample_count() < min_js_samples ||
sampler->external_sample_count() < min_external_samples);
v8::CpuProfile* profile = profiler_->StopProfiling(profile_name);
CHECK(profile);
// Dump collected profile to have a better diagnostic in case of failure.
reinterpret_cast<i::CpuProfile*>(profile)->Print();
return profile;
}
static unsigned TotalHitCount(const v8::CpuProfileNode* node) {
unsigned hit_count = node->GetHitCount();
for (int i = 0, count = node->GetChildrenCount(); i < count; ++i)
hit_count += TotalHitCount(node->GetChild(i));
return hit_count;
}
static const v8::CpuProfileNode* FindChild(v8::Local<v8::Context> context,
const v8::CpuProfileNode* node,
const char* name) {
int count = node->GetChildrenCount();
v8::Local<v8::String> name_handle = v8_str(name);
for (int i = 0; i < count; i++) {
const v8::CpuProfileNode* child = node->GetChild(i);
if (name_handle->Equals(context, child->GetFunctionName()).FromJust()) {
return child;
}
}
return nullptr;
}
static const v8::CpuProfileNode* FindChild(const v8::CpuProfileNode* node,
const char* name) {
for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
const v8::CpuProfileNode* child = node->GetChild(i);
if (strcmp(child->GetFunctionNameStr(), name) == 0) {
return child;
}
}
return nullptr;
}
static const v8::CpuProfileNode* GetChild(v8::Local<v8::Context> context,
const v8::CpuProfileNode* node,
const char* name) {
const v8::CpuProfileNode* result = FindChild(context, node, name);
if (!result) FATAL("Failed to GetChild: %s", name);
return result;
}
static void CheckSimpleBranch(v8::Local<v8::Context> context,
const v8::CpuProfileNode* node,
const char* names[], int length) {
for (int i = 0; i < length; i++) {
const char* name = names[i];
node = GetChild(context, node, name);
}
}
static const ProfileNode* GetSimpleBranch(v8::Local<v8::Context> context,
v8::CpuProfile* profile,
const char* names[], int length) {
const v8::CpuProfileNode* node = profile->GetTopDownRoot();
for (int i = 0; i < length; i++) {
node = GetChild(context, node, names[i]);
}
return reinterpret_cast<const ProfileNode*>(node);
}
struct NameLinePair {
const char* name;
int line_number;
};
static const v8::CpuProfileNode* FindChild(const v8::CpuProfileNode* node,
NameLinePair pair) {
for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
const v8::CpuProfileNode* child = node->GetChild(i);
// The name and line number must match, or if the requested line number was
// -1, then match any function of the same name.
if (strcmp(child->GetFunctionNameStr(), pair.name) == 0 &&
(child->GetLineNumber() == pair.line_number ||
pair.line_number == -1)) {
return child;
}
}
return nullptr;
}
static const v8::CpuProfileNode* GetChild(const v8::CpuProfileNode* node,
NameLinePair pair) {
const v8::CpuProfileNode* result = FindChild(node, pair);
if (!result) FATAL("Failed to GetChild: %s:%d", pair.name, pair.line_number);
return result;
}
static void CheckBranch(const v8::CpuProfileNode* node, NameLinePair path[],
int length) {
for (int i = 0; i < length; i++) {
NameLinePair pair = path[i];
node = GetChild(node, pair);
}
}
static const char* cpu_profiler_test_source =
"%NeverOptimizeFunction(loop);\n"
"%NeverOptimizeFunction(delay);\n"
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(baz);\n"
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(start);\n"
"function loop(timeout) {\n"
" this.mmm = 0;\n"
" var start = Date.now();\n"
" do {\n"
" var n = 1000;\n"
" while(n > 1) {\n"
" n--;\n"
" this.mmm += n * n * n;\n"
" }\n"
" } while (Date.now() - start < timeout);\n"
"}\n"
"function delay() { loop(10); }\n"
"function bar() { delay(); }\n"
"function baz() { delay(); }\n"
"function foo() {\n"
" delay();\n"
" bar();\n"
" delay();\n"
" baz();\n"
"}\n"
"function start(duration) {\n"
" var start = Date.now();\n"
" do {\n"
" foo();\n"
" } while (Date.now() - start < duration);\n"
"}\n";
// Check that the profile tree for the script above will look like the
// following:
//
// [Top down]:
// 1062 0 (root) [-1]
// 1054 0 start [-1]
// 1054 1 foo [-1]
// 265 0 baz [-1]
// 265 1 delay [-1]
// 264 264 loop [-1]
// 525 3 delay [-1]
// 522 522 loop [-1]
// 263 0 bar [-1]
// 263 1 delay [-1]
// 262 262 loop [-1]
// 2 2 (program) [-1]
// 6 6 (garbage collector) [-1]
TEST(CollectCpuProfile) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(cpu_profiler_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
int32_t profiling_interval_ms = 200;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), profiling_interval_ms)};
ProfilerHelper helper(env.local());
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
const v8::CpuProfileNode* foo_node = GetChild(env.local(), start_node, "foo");
const char* bar_branch[] = {"bar", "delay", "loop"};
CheckSimpleBranch(env.local(), foo_node, bar_branch, arraysize(bar_branch));
const char* baz_branch[] = {"baz", "delay", "loop"};
CheckSimpleBranch(env.local(), foo_node, baz_branch, arraysize(baz_branch));
const char* delay_branch[] = {"delay", "loop"};
CheckSimpleBranch(env.local(), foo_node, delay_branch,
arraysize(delay_branch));
profile->Delete();
}
TEST(CollectCpuProfileCallerLineNumbers) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(cpu_profiler_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
int32_t profiling_interval_ms = 200;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), profiling_interval_ms)};
ProfilerHelper helper(env.local());
helper.Run(function, args, arraysize(args), 1000, 0, false,
v8::CpuProfilingMode::kCallerLineNumbers);
v8::CpuProfile* profile =
helper.Run(function, args, arraysize(args), 1000, 0, false,
v8::CpuProfilingMode::kCallerLineNumbers);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(root, {"start", 27});
const v8::CpuProfileNode* foo_node = GetChild(start_node, {"foo", 30});
NameLinePair bar_branch[] = {{"bar", 23}, {"delay", 19}, {"loop", 18}};
CheckBranch(foo_node, bar_branch, arraysize(bar_branch));
NameLinePair baz_branch[] = {{"baz", 25}, {"delay", 20}, {"loop", 18}};
CheckBranch(foo_node, baz_branch, arraysize(baz_branch));
NameLinePair delay_at22_branch[] = {{"delay", 22}, {"loop", 18}};
CheckBranch(foo_node, delay_at22_branch, arraysize(delay_at22_branch));
NameLinePair delay_at24_branch[] = {{"delay", 24}, {"loop", 18}};
CheckBranch(foo_node, delay_at24_branch, arraysize(delay_at24_branch));
profile->Delete();
}
static const char* hot_deopt_no_frame_entry_test_source =
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(start);\n"
"function foo(a, b) {\n"
" return a + b;\n"
"}\n"
"function start(timeout) {\n"
" var start = Date.now();\n"
" do {\n"
" for (var i = 1; i < 1000; ++i) foo(1, i);\n"
" var duration = Date.now() - start;\n"
" } while (duration < timeout);\n"
" return duration;\n"
"}\n";
// Check that the profile tree for the script above will look like the
// following:
//
// [Top down]:
// 1062 0 (root) [-1]
// 1054 0 start [-1]
// 1054 1 foo [-1]
// 2 2 (program) [-1]
// 6 6 (garbage collector) [-1]
//
// The test checks no FP ranges are present in a deoptimized function.
// If 'foo' has no ranges the samples falling into the prologue will miss the
// 'start' function on the stack, so 'foo' will be attached to the (root).
TEST(HotDeoptNoFrameEntry) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(hot_deopt_no_frame_entry_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
int32_t profiling_interval_ms = 200;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), profiling_interval_ms)};
ProfilerHelper helper(env.local());
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000);
function->Call(env.local(), env->Global(), arraysize(args), args)
.ToLocalChecked();
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "foo");
profile->Delete();
}
TEST(CollectCpuProfileSamples) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(cpu_profiler_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
int32_t profiling_interval_ms = 200;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), profiling_interval_ms)};
ProfilerHelper helper(env.local());
v8::CpuProfile* profile =
helper.Run(function, args, arraysize(args), 1000, 0, true);
CHECK_LE(200, profile->GetSamplesCount());
uint64_t end_time = profile->GetEndTime();
uint64_t current_time = profile->GetStartTime();
CHECK_LE(current_time, end_time);
for (int i = 0; i < profile->GetSamplesCount(); i++) {
CHECK(profile->GetSample(i));
uint64_t timestamp = profile->GetSampleTimestamp(i);
CHECK_LE(current_time, timestamp);
CHECK_LE(timestamp, end_time);
current_time = timestamp;
}
profile->Delete();
}
static const char* cpu_profiler_test_source2 =
"%NeverOptimizeFunction(loop);\n"
"%NeverOptimizeFunction(delay);\n"
"%NeverOptimizeFunction(start);\n"
"function loop() {}\n"
"function delay() { loop(); }\n"
"function start(duration) {\n"
" var start = Date.now();\n"
" do {\n"
" for (var i = 0; i < 10000; ++i) delay();\n"
" } while (Date.now() - start < duration);\n"
"}";
// Check that the profile tree doesn't contain unexpected traces:
// - 'loop' can be called only by 'delay'
// - 'delay' may be called only by 'start'
// The profile will look like the following:
//
// [Top down]:
// 135 0 (root) [-1] #1
// 121 72 start [-1] #3
// 49 33 delay [-1] #4
// 16 16 loop [-1] #5
// 14 14 (program) [-1] #2
TEST(SampleWhenFrameIsNotSetup) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(cpu_profiler_test_source2);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
int32_t duration_ms = 100;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), duration_ms)};
ProfilerHelper helper(env.local());
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
const v8::CpuProfileNode* delay_node =
GetChild(env.local(), start_node, "delay");
GetChild(env.local(), delay_node, "loop");
profile->Delete();
}
static const char* native_accessor_test_source = "function start(count) {\n"
" for (var i = 0; i < count; i++) {\n"
" var o = instance.foo;\n"
" instance.foo = o + 1;\n"
" }\n"
"}\n";
class TestApiCallbacks {
public:
explicit TestApiCallbacks(int min_duration_ms)
: min_duration_ms_(min_duration_ms),
is_warming_up_(false) {}
static void Getter(v8::Local<v8::String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
TestApiCallbacks* data = FromInfo(info);
data->Wait();
}
static void Setter(v8::Local<v8::String> name,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info) {
TestApiCallbacks* data = FromInfo(info);
data->Wait();
}
static void Callback(const v8::FunctionCallbackInfo<v8::Value>& info) {
TestApiCallbacks* data = FromInfo(info);
data->Wait();
}
void set_warming_up(bool value) { is_warming_up_ = value; }
private:
void Wait() {
if (is_warming_up_) return;
v8::Platform* platform = v8::internal::V8::GetCurrentPlatform();
double start = platform->CurrentClockTimeMillis();
double duration = 0;
while (duration < min_duration_ms_) {
v8::base::OS::Sleep(v8::base::TimeDelta::FromMilliseconds(1));
duration = platform->CurrentClockTimeMillis() - start;
}
}
template <typename T>
static TestApiCallbacks* FromInfo(const T& info) {
void* data = v8::External::Cast(*info.Data())->Value();
return reinterpret_cast<TestApiCallbacks*>(data);
}
int min_duration_ms_;
bool is_warming_up_;
};
// Test that native accessors are properly reported in the CPU profile.
// This test checks the case when the long-running accessors are called
// only once and the optimizer doesn't have chance to change the invocation
// code.
TEST(NativeAccessorUninitializedIC) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(isolate);
v8::Local<v8::ObjectTemplate> instance_template =
func_template->InstanceTemplate();
TestApiCallbacks accessors(100);
v8::Local<v8::External> data = v8::External::New(isolate, &accessors);
instance_template->SetAccessor(v8_str("foo"), &TestApiCallbacks::Getter,
&TestApiCallbacks::Setter, data);
v8::Local<v8::Function> func =
func_template->GetFunction(env.local()).ToLocalChecked();
v8::Local<v8::Object> instance =
func->NewInstance(env.local()).ToLocalChecked();
env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust();
CompileRun(native_accessor_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
ProfilerHelper helper(env.local());
int32_t repeat_count = 1;
v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "get foo");
GetChild(env.local(), start_node, "set foo");
profile->Delete();
}
// Test that native accessors are properly reported in the CPU profile.
// This test makes sure that the accessors are called enough times to become
// hot and to trigger optimizations.
TEST(NativeAccessorMonomorphicIC) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(isolate);
v8::Local<v8::ObjectTemplate> instance_template =
func_template->InstanceTemplate();
TestApiCallbacks accessors(1);
v8::Local<v8::External> data =
v8::External::New(isolate, &accessors);
instance_template->SetAccessor(v8_str("foo"), &TestApiCallbacks::Getter,
&TestApiCallbacks::Setter, data);
v8::Local<v8::Function> func =
func_template->GetFunction(env.local()).ToLocalChecked();
v8::Local<v8::Object> instance =
func->NewInstance(env.local()).ToLocalChecked();
env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust();
CompileRun(native_accessor_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
{
// Make sure accessors ICs are in monomorphic state before starting
// profiling.
accessors.set_warming_up(true);
int32_t warm_up_iterations = 3;
v8::Local<v8::Value> args[] = {
v8::Integer::New(isolate, warm_up_iterations)};
function->Call(env.local(), env->Global(), arraysize(args), args)
.ToLocalChecked();
accessors.set_warming_up(false);
}
int32_t repeat_count = 100;
v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};
ProfilerHelper helper(env.local());
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "get foo");
GetChild(env.local(), start_node, "set foo");
profile->Delete();
}
static const char* native_method_test_source = "function start(count) {\n"
" for (var i = 0; i < count; i++) {\n"
" instance.fooMethod();\n"
" }\n"
"}\n";
TEST(NativeMethodUninitializedIC) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
TestApiCallbacks callbacks(100);
v8::Local<v8::External> data = v8::External::New(isolate, &callbacks);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(isolate);
func_template->SetClassName(v8_str("Test_InstanceConstructor"));
v8::Local<v8::ObjectTemplate> proto_template =
func_template->PrototypeTemplate();
v8::Local<v8::Signature> signature =
v8::Signature::New(isolate, func_template);
proto_template->Set(
v8_str("fooMethod"),
v8::FunctionTemplate::New(isolate, &TestApiCallbacks::Callback, data,
signature, 0));
v8::Local<v8::Function> func =
func_template->GetFunction(env.local()).ToLocalChecked();
v8::Local<v8::Object> instance =
func->NewInstance(env.local()).ToLocalChecked();
env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust();
CompileRun(native_method_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
ProfilerHelper helper(env.local());
int32_t repeat_count = 1;
v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 100);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "fooMethod");
profile->Delete();
}
TEST(NativeMethodMonomorphicIC) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
TestApiCallbacks callbacks(1);
v8::Local<v8::External> data =
v8::External::New(isolate, &callbacks);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(isolate);
func_template->SetClassName(v8_str("Test_InstanceCostructor"));
v8::Local<v8::ObjectTemplate> proto_template =
func_template->PrototypeTemplate();
v8::Local<v8::Signature> signature =
v8::Signature::New(isolate, func_template);
proto_template->Set(
v8_str("fooMethod"),
v8::FunctionTemplate::New(isolate, &TestApiCallbacks::Callback, data,
signature, 0));
v8::Local<v8::Function> func =
func_template->GetFunction(env.local()).ToLocalChecked();
v8::Local<v8::Object> instance =
func->NewInstance(env.local()).ToLocalChecked();
env->Global()->Set(env.local(), v8_str("instance"), instance).FromJust();
CompileRun(native_method_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
{
// Make sure method ICs are in monomorphic state before starting
// profiling.
callbacks.set_warming_up(true);
int32_t warm_up_iterations = 3;
v8::Local<v8::Value> args[] = {
v8::Integer::New(isolate, warm_up_iterations)};
function->Call(env.local(), env->Global(), arraysize(args), args)
.ToLocalChecked();
callbacks.set_warming_up(false);
}
ProfilerHelper helper(env.local());
int32_t repeat_count = 100;
v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 0, 200);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
GetChild(env.local(), root, "start");
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "fooMethod");
profile->Delete();
}
static const char* bound_function_test_source =
"function foo() {\n"
" startProfiling('my_profile');\n"
"}\n"
"function start() {\n"
" var callback = foo.bind(this);\n"
" callback();\n"
"}";
TEST(BoundFunctionCall) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
CompileRun(bound_function_test_source);
v8::Local<v8::Function> function = GetFunction(env, "start");
ProfilerHelper helper(env);
v8::CpuProfile* profile = helper.Run(function, nullptr, 0);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
GetChild(env, start_node, "foo");
profile->Delete();
}
// This tests checks distribution of the samples through the source lines.
static void TickLines(bool optimize) {
#ifndef V8_LITE_MODE
FLAG_opt = optimize;
#endif // V8_LITE_MODE
CcTest::InitializeVM();
LocalContext env;
i::FLAG_allow_natives_syntax = true;
i::Isolate* isolate = CcTest::i_isolate();
i::Factory* factory = isolate->factory();
i::HandleScope scope(isolate);
i::EmbeddedVector<char, 512> script;
i::EmbeddedVector<char, 64> optimize_call;
const char* func_name = "func";
if (optimize) {
i::SNPrintF(optimize_call, "%%OptimizeFunctionOnNextCall(%s);\n",
func_name);
} else {
optimize_call[0] = '\0';
}
i::SNPrintF(script,
"function %s() {\n"
" var n = 0;\n"
" var m = 100*100;\n"
" while (m > 1) {\n"
" m--;\n"
" n += m * m * m;\n"
" }\n"
"}\n"
"%s();\n"
"%s"
"%s();\n",
func_name, func_name, optimize_call.start(), func_name);
CompileRun(script.start());
i::Handle<i::JSFunction> func = i::Handle<i::JSFunction>::cast(
v8::Utils::OpenHandle(*GetFunction(env.local(), func_name)));
CHECK(func->shared());
CHECK(func->shared()->abstract_code());
CHECK(!optimize || func->IsOptimized() ||
!CcTest::i_isolate()->use_optimizer());
i::AbstractCode* code = func->abstract_code();
CHECK(code);
i::Address code_address = code->raw_instruction_start();
CHECK(code_address);
CpuProfilesCollection* profiles = new CpuProfilesCollection(isolate);
ProfileGenerator* generator = new ProfileGenerator(profiles);
ProfilerEventsProcessor* processor =
new SamplingEventsProcessor(CcTest::i_isolate(), generator,
v8::base::TimeDelta::FromMicroseconds(100));
CpuProfiler profiler(isolate, profiles, generator, processor);
profiles->StartProfiling("", false);
processor->Start();
ProfilerListener profiler_listener(isolate, processor);
// Enqueue code creation events.
i::Handle<i::String> str = factory->NewStringFromAsciiChecked(func_name);
int line = 1;
int column = 1;
profiler_listener.CodeCreateEvent(i::Logger::FUNCTION_TAG, code,
func->shared(), *str, line, column);
// Enqueue a tick event to enable code events processing.
EnqueueTickSampleEvent(processor, code_address);
processor->StopSynchronously();
CpuProfile* profile = profiles->StopProfiling("");
CHECK(profile);
// Check the state of profile generator.
CodeEntry* func_entry = generator->code_map()->FindEntry(code_address);
CHECK(func_entry);
CHECK_EQ(0, strcmp(func_name, func_entry->name()));
const i::SourcePositionTable* line_info = func_entry->line_info();
CHECK(line_info);
CHECK_NE(v8::CpuProfileNode::kNoLineNumberInfo,
line_info->GetSourceLineNumber(100));
// Check the hit source lines using V8 Public APIs.
const i::ProfileTree* tree = profile->top_down();
ProfileNode* root = tree->root();
CHECK(root);
ProfileNode* func_node = root->FindChild(func_entry);
CHECK(func_node);
// Add 10 faked ticks to source line #5.
int hit_line = 5;
int hit_count = 10;
for (int i = 0; i < hit_count; i++) func_node->IncrementLineTicks(hit_line);
unsigned int line_count = func_node->GetHitLineCount();
CHECK_EQ(2u, line_count); // Expect two hit source lines - #1 and #5.
ScopedVector<v8::CpuProfileNode::LineTick> entries(line_count);
CHECK(func_node->GetLineTicks(&entries[0], line_count));
int value = 0;
for (int i = 0; i < entries.length(); i++)
if (entries[i].line == hit_line) {
value = entries[i].hit_count;
break;
}
CHECK_EQ(hit_count, value);
}
TEST(TickLinesBaseline) { TickLines(false); }
TEST(TickLinesOptimized) { TickLines(true); }
static const char* call_function_test_source =
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(start);\n"
"function bar(n) {\n"
" var s = 0;\n"
" for (var i = 0; i < n; i++) s += i * i * i;\n"
" return s;\n"
"}\n"
"function start(duration) {\n"
" var start = Date.now();\n"
" do {\n"
" for (var i = 0; i < 100; ++i)\n"
" bar.call(this, 1000);\n"
" } while (Date.now() - start < duration);\n"
"}";
// Test that if we sampled thread when it was inside FunctionCall buitin then
// its caller frame will be '(unresolved function)' as we have no reliable way
// to resolve it.
//
// [Top down]:
// 96 0 (root) [-1] #1
// 1 1 (garbage collector) [-1] #4
// 5 0 (unresolved function) [-1] #5
// 5 5 call [-1] #6
// 71 70 start [-1] #3
// 1 1 bar [-1] #7
// 19 19 (program) [-1] #2
TEST(FunctionCallSample) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Collect garbage that might have be generated while installing
// extensions.
CcTest::CollectAllGarbage();
CompileRun(call_function_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
ProfilerHelper helper(env.local());
int32_t duration_ms = 100;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), duration_ms)};
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "bar");
const v8::CpuProfileNode* unresolved_node =
FindChild(env.local(), root, i::CodeEntry::kUnresolvedFunctionName);
CHECK(!unresolved_node || GetChild(env.local(), unresolved_node, "call"));
profile->Delete();
}
static const char* function_apply_test_source =
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(test);\n"
"%NeverOptimizeFunction(start);\n"
"function bar(n) {\n"
" var s = 0;\n"
" for (var i = 0; i < n; i++) s += i * i * i;\n"
" return s;\n"
"}\n"
"function test() {\n"
" bar.apply(this, [1000]);\n"
"}\n"
"function start(duration) {\n"
" var start = Date.now();\n"
" do {\n"
" for (var i = 0; i < 100; ++i) test();\n"
" } while (Date.now() - start < duration);\n"
"}";
// [Top down]:
// 94 0 (root) [-1] #0 1
// 2 2 (garbage collector) [-1] #0 7
// 82 49 start [-1] #16 3
// 1 0 (unresolved function) [-1] #0 8
// 1 1 apply [-1] #0 9
// 32 21 test [-1] #16 4
// 2 2 bar [-1] #16 6
// 10 10 (program) [-1] #0 2
TEST(FunctionApplySample) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(function_apply_test_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
ProfilerHelper helper(env.local());
int32_t duration_ms = 100;
v8::Local<v8::Value> args[] = {
v8::Integer::New(env->GetIsolate(), duration_ms)};
v8::CpuProfile* profile = helper.Run(function, args, arraysize(args), 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
const v8::CpuProfileNode* test_node =
GetChild(env.local(), start_node, "test");
GetChild(env.local(), test_node, "bar");
const v8::CpuProfileNode* unresolved_node =
FindChild(env.local(), start_node, CodeEntry::kUnresolvedFunctionName);
CHECK(!unresolved_node || GetChild(env.local(), unresolved_node, "apply"));
profile->Delete();
}
static const char* cpu_profiler_deep_stack_test_source =
"function foo(n) {\n"
" if (n)\n"
" foo(n - 1);\n"
" else\n"
" collectSample();\n"
"}\n"
"function start() {\n"
" startProfiling('my_profile');\n"
" foo(250);\n"
"}\n";
// Check a deep stack
//
// [Top down]:
// 0 (root) 0 #1
// 2 (program) 0 #2
// 0 start 21 #3 no reason
// 0 foo 21 #4 no reason
// 0 foo 21 #5 no reason
// ....
// 0 foo 21 #254 no reason
TEST(CpuProfileDeepStack) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
CompileRun(cpu_profiler_deep_stack_test_source);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::Local<v8::String> profile_name = v8_str("my_profile");
function->Call(env, env->Global(), 0, nullptr).ToLocalChecked();
v8::CpuProfile* profile = helper.profiler()->StopProfiling(profile_name);
CHECK(profile);
// Dump collected profile to have a better diagnostic in case of failure.
reinterpret_cast<i::CpuProfile*>(profile)->Print();
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* node = GetChild(env, root, "start");
for (int i = 0; i <= 250; ++i) {
node = GetChild(env, node, "foo");
}
CHECK(!FindChild(env, node, "foo"));
profile->Delete();
}
static const char* js_native_js_test_source =
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(start);\n"
"function foo(n) {\n"
" var s = 0;\n"
" for (var i = 0; i < n; i++) s += i * i * i;\n"
" return s;\n"
"}\n"
"function bar() {\n"
" foo(1000);\n"
"}\n"
"function start() {\n"
" CallJsFunction(bar);\n"
"}";
static void CallJsFunction(const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::Local<v8::Function> function = info[0].As<v8::Function>();
v8::Local<v8::Value> argv[] = {info[1]};
function->Call(info.GetIsolate()->GetCurrentContext(), info.This(),
arraysize(argv), argv)
.ToLocalChecked();
}
// [Top down]:
// 58 0 (root) #0 1
// 2 2 (program) #0 2
// 56 1 start #16 3
// 55 0 CallJsFunction #0 4
// 55 1 bar #16 5
// 54 54 foo #16 6
TEST(JsNativeJsSample) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::Local<v8::FunctionTemplate> func_template = v8::FunctionTemplate::New(
env->GetIsolate(), CallJsFunction);
v8::Local<v8::Function> func =
func_template->GetFunction(env).ToLocalChecked();
func->SetName(v8_str("CallJsFunction"));
env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust();
CompileRun(js_native_js_test_source);
v8::Local<v8::Function> function = GetFunction(env, "start");
ProfilerHelper helper(env);
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
const v8::CpuProfileNode* native_node =
GetChild(env, start_node, "CallJsFunction");
const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar");
GetChild(env, bar_node, "foo");
profile->Delete();
}
static const char* js_native_js_runtime_js_test_source =
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(start);\n"
"function foo(n) {\n"
" var s = 0;\n"
" for (var i = 0; i < n; i++) s += i * i * i;\n"
" return s;\n"
"}\n"
"var bound = foo.bind(this);\n"
"function bar() {\n"
" bound(1000);\n"
"}\n"
"function start() {\n"
" CallJsFunction(bar);\n"
"}";
// [Top down]:
// 57 0 (root) #0 1
// 55 1 start #16 3
// 54 0 CallJsFunction #0 4
// 54 3 bar #16 5
// 51 51 foo #16 6
// 2 2 (program) #0 2
TEST(JsNativeJsRuntimeJsSample) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::Local<v8::FunctionTemplate> func_template = v8::FunctionTemplate::New(
env->GetIsolate(), CallJsFunction);
v8::Local<v8::Function> func =
func_template->GetFunction(env).ToLocalChecked();
func->SetName(v8_str("CallJsFunction"));
env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust();
CompileRun(js_native_js_runtime_js_test_source);
ProfilerHelper helper(env);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
const v8::CpuProfileNode* native_node =
GetChild(env, start_node, "CallJsFunction");
const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar");
GetChild(env, bar_node, "foo");
profile->Delete();
}
static void CallJsFunction2(const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::base::OS::Print("In CallJsFunction2\n");
CallJsFunction(info);
}
static const char* js_native1_js_native2_js_test_source =
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(start);\n"
"function foo() {\n"
" var s = 0;\n"
" for (var i = 0; i < 1000; i++) s += i * i * i;\n"
" return s;\n"
"}\n"
"function bar() {\n"
" CallJsFunction2(foo);\n"
"}\n"
"function start() {\n"
" CallJsFunction1(bar);\n"
"}";
// [Top down]:
// 57 0 (root) #0 1
// 55 1 start #16 3
// 54 0 CallJsFunction1 #0 4
// 54 0 bar #16 5
// 54 0 CallJsFunction2 #0 6
// 54 54 foo #16 7
// 2 2 (program) #0 2
TEST(JsNative1JsNative2JsSample) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::Local<v8::Function> func1 =
v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction)
->GetFunction(env)
.ToLocalChecked();
func1->SetName(v8_str("CallJsFunction1"));
env->Global()->Set(env, v8_str("CallJsFunction1"), func1).FromJust();
v8::Local<v8::Function> func2 =
v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction2)
->GetFunction(env)
.ToLocalChecked();
func2->SetName(v8_str("CallJsFunction2"));
env->Global()->Set(env, v8_str("CallJsFunction2"), func2).FromJust();
CompileRun(js_native1_js_native2_js_test_source);
ProfilerHelper helper(env);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 1000);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
const v8::CpuProfileNode* native_node1 =
GetChild(env, start_node, "CallJsFunction1");
const v8::CpuProfileNode* bar_node = GetChild(env, native_node1, "bar");
const v8::CpuProfileNode* native_node2 =
GetChild(env, bar_node, "CallJsFunction2");
GetChild(env, native_node2, "foo");
profile->Delete();
}
static const char* js_force_collect_sample_source =
"function start() {\n"
" CallCollectSample();\n"
"}";
static void CallCollectSample(const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::CpuProfiler::CollectSample(info.GetIsolate());
}
TEST(CollectSampleAPI) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(env->GetIsolate(), CallCollectSample);
v8::Local<v8::Function> func =
func_template->GetFunction(env).ToLocalChecked();
func->SetName(v8_str("CallCollectSample"));
env->Global()->Set(env, v8_str("CallCollectSample"), func).FromJust();
CompileRun(js_force_collect_sample_source);
ProfilerHelper helper(env);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 0);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
CHECK_LE(1, start_node->GetChildrenCount());
GetChild(env, start_node, "CallCollectSample");
profile->Delete();
}
static const char* js_native_js_runtime_multiple_test_source =
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(bar);\n"
"%NeverOptimizeFunction(start);\n"
"function foo() {\n"
" return Math.sin(Math.random());\n"
"}\n"
"var bound = foo.bind(this);\n"
"function bar() {\n"
" return bound();\n"
"}\n"
"function start() {\n"
" startProfiling('my_profile');\n"
" var startTime = Date.now();\n"
" do {\n"
" CallJsFunction(bar);\n"
" } while (Date.now() - startTime < 200);\n"
"}";
// The test check multiple entrances/exits between JS and native code.
//
// [Top down]:
// (root) #0 1
// start #16 3
// CallJsFunction #0 4
// bar #16 5
// foo #16 6
// (program) #0 2
TEST(JsNativeJsRuntimeJsSampleMultiple) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(env->GetIsolate(), CallJsFunction);
v8::Local<v8::Function> func =
func_template->GetFunction(env).ToLocalChecked();
func->SetName(v8_str("CallJsFunction"));
env->Global()->Set(env, v8_str("CallJsFunction"), func).FromJust();
CompileRun(js_native_js_runtime_multiple_test_source);
ProfilerHelper helper(env);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 500, 500);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
const v8::CpuProfileNode* native_node =
GetChild(env, start_node, "CallJsFunction");
const v8::CpuProfileNode* bar_node = GetChild(env, native_node, "bar");
GetChild(env, bar_node, "foo");
profile->Delete();
}
static const char* inlining_test_source =
"%NeverOptimizeFunction(action);\n"
"%NeverOptimizeFunction(start);\n"
"level1();\n"
"%OptimizeFunctionOnNextCall(level1);\n"
"%OptimizeFunctionOnNextCall(level2);\n"
"%OptimizeFunctionOnNextCall(level3);\n"
"var finish = false;\n"
"function action(n) {\n"
" var s = 0;\n"
" for (var i = 0; i < n; ++i) s += i*i*i;\n"
" if (finish)\n"
" startProfiling('my_profile');\n"
" return s;\n"
"}\n"
"function level3() { return action(100); }\n"
"function level2() { return level3() * 2; }\n"
"function level1() { return level2(); }\n"
"function start() {\n"
" var n = 100;\n"
" while (--n)\n"
" level1();\n"
" finish = true;\n"
" level1();\n"
"}";
// The test check multiple entrances/exits between JS and native code.
//
// [Top down]:
// (root) #0 1
// start #16 3
// level1 #0 4
// level2 #16 5
// level3 #16 6
// action #16 7
// (program) #0 2
TEST(Inlining) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
CompileRun(inlining_test_source);
v8::Local<v8::Function> function = GetFunction(env, "start");
v8::Local<v8::String> profile_name = v8_str("my_profile");
function->Call(env, env->Global(), 0, nullptr).ToLocalChecked();
v8::CpuProfile* profile = helper.profiler()->StopProfiling(profile_name);
CHECK(profile);
// Dump collected profile to have a better diagnostic in case of failure.
reinterpret_cast<i::CpuProfile*>(profile)->Print();
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env, root, "start");
const v8::CpuProfileNode* level1_node = GetChild(env, start_node, "level1");
const v8::CpuProfileNode* level2_node = GetChild(env, level1_node, "level2");
const v8::CpuProfileNode* level3_node = GetChild(env, level2_node, "level3");
GetChild(env, level3_node, "action");
profile->Delete();
}
// [Top down]:
// 0 (root) #0 1
// 2 (program) #0 2
// 3 (idle) #0 3
TEST(IdleTime) {
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate());
v8::Local<v8::String> profile_name = v8_str("my_profile");
cpu_profiler->StartProfiling(profile_name);
i::Isolate* isolate = CcTest::i_isolate();
i::ProfilerEventsProcessor* processor =
reinterpret_cast<i::CpuProfiler*>(cpu_profiler)->processor();
processor->AddCurrentStack(true);
isolate->SetIdle(true);
for (int i = 0; i < 3; i++) {
processor->AddCurrentStack(true);
}
isolate->SetIdle(false);
processor->AddCurrentStack(true);
v8::CpuProfile* profile = cpu_profiler->StopProfiling(profile_name);
CHECK(profile);
// Dump collected profile to have a better diagnostic in case of failure.
reinterpret_cast<i::CpuProfile*>(profile)->Print();
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* program_node =
GetChild(env.local(), root, CodeEntry::kProgramEntryName);
CHECK_EQ(0, program_node->GetChildrenCount());
CHECK_GE(program_node->GetHitCount(), 2u);
const v8::CpuProfileNode* idle_node =
GetChild(env.local(), root, CodeEntry::kIdleEntryName);
CHECK_EQ(0, idle_node->GetChildrenCount());
CHECK_GE(idle_node->GetHitCount(), 3u);
profile->Delete();
cpu_profiler->Dispose();
}
static void CheckFunctionDetails(v8::Isolate* isolate,
const v8::CpuProfileNode* node,
const char* name, const char* script_name,
int script_id, int line, int column) {
v8::Local<v8::Context> context = isolate->GetCurrentContext();
CHECK(v8_str(name)->Equals(context, node->GetFunctionName()).FromJust());
CHECK_EQ(0, strcmp(name, node->GetFunctionNameStr()));
CHECK(v8_str(script_name)
->Equals(context, node->GetScriptResourceName())
.FromJust());
CHECK_EQ(0, strcmp(script_name, node->GetScriptResourceNameStr()));
CHECK_EQ(script_id, node->GetScriptId());
CHECK_EQ(line, node->GetLineNumber());
CHECK_EQ(column, node->GetColumnNumber());
}
TEST(FunctionDetails) {
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
v8::Local<v8::Script> script_a = CompileWithOrigin(
"%NeverOptimizeFunction(foo);\n"
"%NeverOptimizeFunction(bar);\n"
" function foo\n() { bar(); }\n"
" function bar() { startProfiling(); }\n",
"script_a");
script_a->Run(env).ToLocalChecked();
v8::Local<v8::Script> script_b = CompileWithOrigin(
"%NeverOptimizeFunction(baz);"
"\n\n function baz() { foo(); }\n"
"\n\nbaz();\n"
"stopProfiling();\n",
"script_b");
script_b->Run(env).ToLocalChecked();
const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
const v8::CpuProfileNode* current = profile->GetTopDownRoot();
reinterpret_cast<ProfileNode*>(
const_cast<v8::CpuProfileNode*>(current))->Print(0);
// The tree should look like this:
// 0 (root) 0 #1
// 0 "" 19 #2 no reason script_b:1
// 0 baz 19 #3 TryCatchStatement script_b:3
// 0 foo 18 #4 TryCatchStatement script_a:2
// 1 bar 18 #5 no reason script_a:3
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* script = GetChild(env, root, "");
CheckFunctionDetails(env->GetIsolate(), script, "", "script_b",
script_b->GetUnboundScript()->GetId(), 1, 1);
const v8::CpuProfileNode* baz = GetChild(env, script, "baz");
CheckFunctionDetails(env->GetIsolate(), baz, "baz", "script_b",
script_b->GetUnboundScript()->GetId(), 3, 16);
const v8::CpuProfileNode* foo = GetChild(env, baz, "foo");
CheckFunctionDetails(env->GetIsolate(), foo, "foo", "script_a",
script_a->GetUnboundScript()->GetId(), 4, 1);
const v8::CpuProfileNode* bar = GetChild(env, foo, "bar");
CheckFunctionDetails(env->GetIsolate(), bar, "bar", "script_a",
script_a->GetUnboundScript()->GetId(), 5, 14);
}
TEST(FunctionDetailsInlining) {
if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
// alpha is in a_script, beta in b_script. beta is
// inlined in alpha, but it should be attributed to b_script.
v8::Local<v8::Script> script_b = CompileWithOrigin(
"function beta(k) {\n"
" let sum = 2;\n"
" for(let i = 0; i < k; i ++) {\n"
" sum += i;\n"
" sum = sum + 'a';\n"
" }\n"
" return sum;\n"
"}\n"
"\n",
"script_b");
v8::Local<v8::Script> script_a = CompileWithOrigin(
"function alpha(p) {\n"
" let res = beta(p);\n"
" res = res + res;\n"
" return res;\n"
"}\n"
"let p = 2;\n"
"\n"
"\n"
"// Warm up before profiling or the inlining doesn't happen.\n"
"p = alpha(p);\n"
"p = alpha(p);\n"
"%OptimizeFunctionOnNextCall(alpha);\n"
"p = alpha(p);\n"
"\n"
"\n"
"startProfiling();\n"
"for(let i = 0; i < 10000; i++) {\n"
" p = alpha(p);\n"
"}\n"
"stopProfiling();\n"
"\n"
"\n",
"script_a");
script_b->Run(env).ToLocalChecked();
script_a->Run(env).ToLocalChecked();
const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
const v8::CpuProfileNode* current = profile->GetTopDownRoot();
reinterpret_cast<ProfileNode*>(const_cast<v8::CpuProfileNode*>(current))
->Print(0);
// The tree should look like this:
// 0 (root) 0 #1
// 5 (program) 0 #6
// 2 14 #2 script_a:1
// ;;; deopted at script_id: 14 position: 299 with reason 'Insufficient
// type feedback for call'.
// 1 alpha 14 #4 script_a:1
// 9 beta 13 #5 script_b:0
// 0 startProfiling 0 #3
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* script = GetChild(env, root, "");
CheckFunctionDetails(env->GetIsolate(), script, "", "script_a",
script_a->GetUnboundScript()->GetId(), 1, 1);
const v8::CpuProfileNode* alpha = FindChild(env, script, "alpha");
// Return early if profiling didn't sample alpha.
if (!alpha) return;
CheckFunctionDetails(env->GetIsolate(), alpha, "alpha", "script_a",
script_a->GetUnboundScript()->GetId(), 1, 15);
const v8::CpuProfileNode* beta = FindChild(env, alpha, "beta");
if (!beta) return;
CheckFunctionDetails(env->GetIsolate(), beta, "beta", "script_b",
script_b->GetUnboundScript()->GetId(), 0, 0);
}
TEST(DontStopOnFinishedProfileDelete) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
v8::CpuProfiler* profiler = v8::CpuProfiler::New(env->GetIsolate());
i::CpuProfiler* iprofiler = reinterpret_cast<i::CpuProfiler*>(profiler);
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::Local<v8::String> outer = v8_str("outer");
profiler->StartProfiling(outer);
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::Local<v8::String> inner = v8_str("inner");
profiler->StartProfiling(inner);
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::CpuProfile* inner_profile = profiler->StopProfiling(inner);
CHECK(inner_profile);
CHECK_EQ(1, iprofiler->GetProfilesCount());
inner_profile->Delete();
inner_profile = nullptr;
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::CpuProfile* outer_profile = profiler->StopProfiling(outer);
CHECK(outer_profile);
CHECK_EQ(1, iprofiler->GetProfilesCount());
outer_profile->Delete();
outer_profile = nullptr;
CHECK_EQ(0, iprofiler->GetProfilesCount());
profiler->Dispose();
}
const char* GetBranchDeoptReason(v8::Local<v8::Context> context,
i::CpuProfile* iprofile, const char* branch[],
int length) {
v8::CpuProfile* profile = reinterpret_cast<v8::CpuProfile*>(iprofile);
const ProfileNode* iopt_function = nullptr;
iopt_function = GetSimpleBranch(context, profile, branch, length);
CHECK_EQ(1U, iopt_function->deopt_infos().size());
return iopt_function->deopt_infos()[0].deopt_reason;
}
// deopt at top function
TEST(CollectDeoptEvents) {
if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
i::CpuProfiler* iprofiler =
reinterpret_cast<i::CpuProfiler*>(helper.profiler());
const char opt_source[] =
"function opt_function%d(value, depth) {\n"
" if (depth) return opt_function%d(value, depth - 1);\n"
"\n"
" return 10 / value;\n"
"}\n"
"\n";
for (int i = 0; i < 3; ++i) {
i::EmbeddedVector<char, sizeof(opt_source) + 100> buffer;
i::SNPrintF(buffer, opt_source, i, i);
v8::Script::Compile(env, v8_str(buffer.start()))
.ToLocalChecked()
->Run(env)
.ToLocalChecked();
}
const char* source =
"startProfiling();\n"
"\n"
"opt_function0(1, 1);\n"
"\n"
"%OptimizeFunctionOnNextCall(opt_function0)\n"
"\n"
"opt_function0(1, 1);\n"
"\n"
"opt_function0(undefined, 1);\n"
"\n"
"opt_function1(1, 1);\n"
"\n"
"%OptimizeFunctionOnNextCall(opt_function1)\n"
"\n"
"opt_function1(1, 1);\n"
"\n"
"opt_function1(NaN, 1);\n"
"\n"
"opt_function2(1, 1);\n"
"\n"
"%OptimizeFunctionOnNextCall(opt_function2)\n"
"\n"
"opt_function2(1, 1);\n"
"\n"
"opt_function2(0, 1);\n"
"\n"
"stopProfiling();\n"
"\n";
v8::Script::Compile(env, v8_str(source))
.ToLocalChecked()
->Run(env)
.ToLocalChecked();
i::CpuProfile* iprofile = iprofiler->GetProfile(0);
iprofile->Print();
/* The expected profile
[Top down]:
0 (root) 0 #1
23 32 #2
1 opt_function2 31 #7
1 opt_function2 31 #8
;;; deopted at script_id: 31 position: 106 with reason
'division by zero'.
2 opt_function0 29 #3
4 opt_function0 29 #4
;;; deopted at script_id: 29 position: 108 with reason 'not a
heap number'.
0 opt_function1 30 #5
1 opt_function1 30 #6
;;; deopted at script_id: 30 position: 108 with reason 'lost
precision or NaN'.
*/
{
const char* branch[] = {"", "opt_function0", "opt_function0"};
const char* deopt_reason =
GetBranchDeoptReason(env, iprofile, branch, arraysize(branch));
if (deopt_reason != reason(i::DeoptimizeReason::kNotAHeapNumber) &&
deopt_reason != reason(i::DeoptimizeReason::kNotASmi)) {
FATAL("%s", deopt_reason);
}
}
{
const char* branch[] = {"", "opt_function1", "opt_function1"};
const char* deopt_reason =
GetBranchDeoptReason(env, iprofile, branch, arraysize(branch));
if (deopt_reason != reason(i::DeoptimizeReason::kNaN) &&
deopt_reason != reason(i::DeoptimizeReason::kLostPrecisionOrNaN) &&
deopt_reason != reason(i::DeoptimizeReason::kNotASmi)) {
FATAL("%s", deopt_reason);
}
}
{
const char* branch[] = {"", "opt_function2", "opt_function2"};
CHECK_EQ(reason(i::DeoptimizeReason::kDivisionByZero),
GetBranchDeoptReason(env, iprofile, branch, arraysize(branch)));
}
iprofiler->DeleteProfile(iprofile);
}
TEST(SourceLocation) {
i::FLAG_always_opt = true;
LocalContext env;
v8::HandleScope scope(CcTest::isolate());
const char* source =
"function CompareStatementWithThis() {\n"
" if (this === 1) {}\n"
"}\n"
"CompareStatementWithThis();\n";
v8::Script::Compile(env.local(), v8_str(source))
.ToLocalChecked()
->Run(env.local())
.ToLocalChecked();
}
static const char* inlined_source =
"function opt_function(left, right) { var k = left*right; return k + 1; "
"}\n";
// 0.........1.........2.........3.........4....*....5.........6......*..7
// deopt at the first level inlined function
TEST(DeoptAtFirstLevelInlinedSource) {
if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
i::CpuProfiler* iprofiler =
reinterpret_cast<i::CpuProfiler*>(helper.profiler());
// 0.........1.........2.........3.........4.........5.........6.........7
const char* source =
"function test(left, right) { return opt_function(left, right); }\n"
"\n"
"startProfiling();\n"
"\n"
"test(10, 10);\n"
"\n"
"%OptimizeFunctionOnNextCall(test)\n"
"\n"
"test(10, 10);\n"
"\n"
"test(undefined, 1e9);\n"
"\n"
"stopProfiling();\n"
"\n";
v8::Local<v8::Script> inlined_script = v8_compile(inlined_source);
inlined_script->Run(env).ToLocalChecked();
int inlined_script_id = inlined_script->GetUnboundScript()->GetId();
v8::Local<v8::Script> script = v8_compile(source);
script->Run(env).ToLocalChecked();
int script_id = script->GetUnboundScript()->GetId();
i::CpuProfile* iprofile = iprofiler->GetProfile(0);
iprofile->Print();
/* The expected profile output
[Top down]:
0 (root) 0 #1
10 30 #2
1 test 30 #3
;;; deopted at script_id: 29 position: 45 with reason 'not a
heap number'.
;;; Inline point: script_id 30 position: 36.
4 opt_function 29 #4
*/
v8::CpuProfile* profile = reinterpret_cast<v8::CpuProfile*>(iprofile);
const char* branch[] = {"", "test"};
const ProfileNode* itest_node =
GetSimpleBranch(env, profile, branch, arraysize(branch));
const std::vector<v8::CpuProfileDeoptInfo>& deopt_infos =
itest_node->deopt_infos();
CHECK_EQ(1U, deopt_infos.size());
const v8::CpuProfileDeoptInfo& info = deopt_infos[0];
CHECK(reason(i::DeoptimizeReason::kNotASmi) == info.deopt_reason ||
reason(i::DeoptimizeReason::kNotAHeapNumber) == info.deopt_reason);
CHECK_EQ(2U, info.stack.size());
CHECK_EQ(inlined_script_id, info.stack[0].script_id);
CHECK_LE(dist(offset(inlined_source, "*right"), info.stack[0].position), 1);
CHECK_EQ(script_id, info.stack[1].script_id);
CHECK_EQ(offset(source, "opt_function(left,"), info.stack[1].position);
iprofiler->DeleteProfile(iprofile);
}
// deopt at the second level inlined function
TEST(DeoptAtSecondLevelInlinedSource) {
if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
i::CpuProfiler* iprofiler =
reinterpret_cast<i::CpuProfiler*>(helper.profiler());
// 0.........1.........2.........3.........4.........5.........6.........7
const char* source =
"function test2(left, right) { return opt_function(left, right); }\n"
"function test1(left, right) { return test2(left, right); } \n"
"\n"
"startProfiling();\n"
"\n"
"test1(10, 10);\n"
"\n"
"%OptimizeFunctionOnNextCall(test1)\n"
"\n"
"test1(10, 10);\n"
"\n"
"test1(undefined, 1e9);\n"
"\n"
"stopProfiling();\n"
"\n";
v8::Local<v8::Script> inlined_script = v8_compile(inlined_source);
inlined_script->Run(env).ToLocalChecked();
int inlined_script_id = inlined_script->GetUnboundScript()->GetId();
v8::Local<v8::Script> script = v8_compile(source);
script->Run(env).ToLocalChecked();
int script_id = script->GetUnboundScript()->GetId();
i::CpuProfile* iprofile = iprofiler->GetProfile(0);
iprofile->Print();
/* The expected profile output
[Top down]:
0 (root) 0 #1
11 30 #2
1 test1 30 #3
;;; deopted at script_id: 29 position: 45 with reason 'not a
heap number'.
;;; Inline point: script_id 30 position: 37.
;;; Inline point: script_id 30 position: 103.
1 test2 30 #4
3 opt_function 29 #5
*/
v8::CpuProfile* profile = reinterpret_cast<v8::CpuProfile*>(iprofile);
const char* branch[] = {"", "test1"};
const ProfileNode* itest_node =
GetSimpleBranch(env, profile, branch, arraysize(branch));
const std::vector<v8::CpuProfileDeoptInfo>& deopt_infos =
itest_node->deopt_infos();
CHECK_EQ(1U, deopt_infos.size());
const v8::CpuProfileDeoptInfo info = deopt_infos[0];
CHECK(reason(i::DeoptimizeReason::kNotASmi) == info.deopt_reason ||
reason(i::DeoptimizeReason::kNotAHeapNumber) == info.deopt_reason);
CHECK_EQ(3U, info.stack.size());
CHECK_EQ(inlined_script_id, info.stack[0].script_id);
CHECK_LE(dist(offset(inlined_source, "*right"), info.stack[0].position), 1);
CHECK_EQ(script_id, info.stack[1].script_id);
CHECK_EQ(offset(source, "opt_function(left,"), info.stack[1].position);
CHECK_EQ(offset(source, "test2(left, right);"), info.stack[2].position);
iprofiler->DeleteProfile(iprofile);
}
// deopt in untracked function
TEST(DeoptUntrackedFunction) {
if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
i::FLAG_allow_natives_syntax = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
ProfilerHelper helper(env);
i::CpuProfiler* iprofiler =
reinterpret_cast<i::CpuProfiler*>(helper.profiler());
// 0.........1.........2.........3.........4.........5.........6.........7
const char* source =
"function test(left, right) { return opt_function(left, right); }\n"
"\n"
"test(10, 10);\n"
"\n"
"%OptimizeFunctionOnNextCall(test)\n"
"\n"
"test(10, 10);\n"
"\n"
"startProfiling();\n" // profiler started after compilation.
"\n"
"test(undefined, 10);\n"
"\n"
"stopProfiling();\n"
"\n";
v8::Local<v8::Script> inlined_script = v8_compile(inlined_source);
inlined_script->Run(env).ToLocalChecked();
v8::Local<v8::Script> script = v8_compile(source);
script->Run(env).ToLocalChecked();
i::CpuProfile* iprofile = iprofiler->GetProfile(0);
iprofile->Print();
v8::CpuProfile* profile = reinterpret_cast<v8::CpuProfile*>(iprofile);
const char* branch[] = {"", "test"};
const ProfileNode* itest_node =
GetSimpleBranch(env, profile, branch, arraysize(branch));
CHECK_EQ(0U, itest_node->deopt_infos().size());
iprofiler->DeleteProfile(iprofile);
}
using v8::platform::tracing::TraceBuffer;
using v8::platform::tracing::TraceConfig;
using v8::platform::tracing::TraceObject;
namespace {
class CpuProfileEventChecker : public v8::platform::tracing::TraceWriter {
public:
void AppendTraceEvent(TraceObject* trace_event) override {
if (trace_event->name() != std::string("Profile") &&
trace_event->name() != std::string("ProfileChunk"))
return;
CHECK(!profile_id_ || trace_event->id() == profile_id_);
CHECK_EQ(1, trace_event->num_args());
CHECK_EQ(TRACE_VALUE_TYPE_CONVERTABLE, trace_event->arg_types()[0]);
profile_id_ = trace_event->id();
v8::ConvertableToTraceFormat* arg =
trace_event->arg_convertables()[0].get();
arg->AppendAsTraceFormat(&result_json_);
}
void Flush() override {}
std::string result_json() const { return result_json_; }
private:
std::string result_json_;
uint64_t profile_id_ = 0;
};
} // namespace
TEST(TracingCpuProfiler) {
v8::Platform* old_platform = i::V8::GetCurrentPlatform();
std::unique_ptr<v8::Platform> default_platform =
v8::platform::NewDefaultPlatform();
i::V8::SetPlatformForTesting(default_platform.get());
auto tracing = base::make_unique<v8::platform::tracing::TracingController>();
v8::platform::tracing::TracingController* tracing_controller = tracing.get();
static_cast<v8::platform::DefaultPlatform*>(default_platform.get())
->SetTracingController(std::move(tracing));
CpuProfileEventChecker* event_checker = new CpuProfileEventChecker();
TraceBuffer* ring_buffer =
TraceBuffer::CreateTraceBufferRingBuffer(1, event_checker);
tracing_controller->Initialize(ring_buffer);
TraceConfig* trace_config = new TraceConfig();
trace_config->AddIncludedCategory(
TRACE_DISABLED_BY_DEFAULT("v8.cpu_profiler"));
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
{
tracing_controller->StartTracing(trace_config);
CompileRun("function foo() { } foo();");
tracing_controller->StopTracing();
CompileRun("function bar() { } bar();");
}
const char* profile_checker =
"function checkProfile(profile) {\n"
" if (typeof profile['startTime'] !== 'number') return 'startTime';\n"
" return '';\n"
"}\n"
"checkProfile(";
std::string profile_json = event_checker->result_json();
CHECK_LT(0u, profile_json.length());
printf("Profile JSON: %s\n", profile_json.c_str());
std::string code = profile_checker + profile_json + ")";
v8::Local<v8::Value> result =
CompileRunChecked(CcTest::isolate(), code.c_str());
v8::String::Utf8Value value(CcTest::isolate(), result);
printf("Check result: %*s\n", value.length(), *value);
CHECK_EQ(0, value.length());
i::V8::SetPlatformForTesting(old_platform);
}
TEST(Issue763073) {
class AllowNativesSyntax {
public:
AllowNativesSyntax()
: allow_natives_syntax_(i::FLAG_allow_natives_syntax),
trace_deopt_(i::FLAG_trace_deopt) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_trace_deopt = true;
}
~AllowNativesSyntax() {
i::FLAG_allow_natives_syntax = allow_natives_syntax_;
i::FLAG_trace_deopt = trace_deopt_;
}
private:
bool allow_natives_syntax_;
bool trace_deopt_;
};
AllowNativesSyntax allow_natives_syntax_scope;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
CompileRun(
"function f() { return function g(x) { }; }"
// Create first closure, optimize it, and deoptimize it.
"var g = f();"
"g(1);"
"%OptimizeFunctionOnNextCall(g);"
"g(1);"
"%DeoptimizeFunction(g);"
// Create second closure, and optimize it. This will create another
// optimized code object and put in the (shared) type feedback vector.
"var h = f();"
"h(1);"
"%OptimizeFunctionOnNextCall(h);"
"h(1);");
// Start profiling.
v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate());
v8::Local<v8::String> profile_name = v8_str("test");
// Here we test that the heap iteration upon profiling start is not
// confused by having a deoptimized code object for a closure while
// having a different optimized code object in the type feedback vector.
cpu_profiler->StartProfiling(profile_name);
v8::CpuProfile* p = cpu_profiler->StopProfiling(profile_name);
p->Delete();
cpu_profiler->Dispose();
}
static const char* js_collect_sample_api_source =
"%NeverOptimizeFunction(start);\n"
"function start() {\n"
" CallStaticCollectSample();\n"
"}";
static void CallStaticCollectSample(
const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::CpuProfiler::CollectSample(info.GetIsolate());
}
TEST(StaticCollectSampleAPI) {
i::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::FunctionTemplate> func_template =
v8::FunctionTemplate::New(env->GetIsolate(), CallStaticCollectSample);
v8::Local<v8::Function> func =
func_template->GetFunction(env.local()).ToLocalChecked();
func->SetName(v8_str("CallStaticCollectSample"));
env->Global()
->Set(env.local(), v8_str("CallStaticCollectSample"), func)
.FromJust();
CompileRun(js_collect_sample_api_source);
v8::Local<v8::Function> function = GetFunction(env.local(), "start");
ProfilerHelper helper(env.local());
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 100);
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* start_node = GetChild(env.local(), root, "start");
GetChild(env.local(), start_node, "CallStaticCollectSample");
profile->Delete();
}
TEST(CodeEntriesMemoryLeak) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
std::string source = "function start() {}\n";
for (int i = 0; i < 1000; ++i) {
source += "function foo" + std::to_string(i) + "() { return " +
std::to_string(i) +
"; }\n"
"foo" +
std::to_string(i) + "();\n";
}
CompileRun(source.c_str());
v8::Local<v8::Function> function = GetFunction(env, "start");
ProfilerHelper helper(env);
for (int j = 0; j < 100; ++j) {
v8::CpuProfile* profile = helper.Run(function, nullptr, 0);
profile->Delete();
}
i::CpuProfiler* profiler =
reinterpret_cast<i::CpuProfiler*>(helper.profiler());
CHECK(!profiler->profiler_listener_for_test());
}
TEST(NativeFrameStackTrace) {
// A test for issue https://crbug.com/768540
// When a sample lands in a native function which has not EXIT frame
// stack frame iterator used to bail out and produce an empty stack trace.
// The source code below makes v8 call the
// v8::internal::StringTable::LookupStringIfExists_NoAllocate native function
// without producing an EXIT frame.
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
v8::Context::Scope context_scope(env);
const char* source = R"(
function jsFunction() {
var s = {};
for (var i = 0; i < 1e4; ++i) {
for (var j = 0; j < 100; j++) {
s['item' + j] = 'alph';
}
}
})";
CompileRun(source);
v8::Local<v8::Function> function = GetFunction(env, "jsFunction");
ProfilerHelper helper(env);
v8::CpuProfile* profile = helper.Run(function, nullptr, 0, 100, 0, true);
// Count the fraction of samples landing in 'jsFunction' (valid stack)
// vs '(program)' (no stack captured).
const v8::CpuProfileNode* root = profile->GetTopDownRoot();
const v8::CpuProfileNode* js_function = FindChild(root, "jsFunction");
const v8::CpuProfileNode* program = FindChild(root, "(program)");
if (program) {
unsigned js_function_samples = TotalHitCount(js_function);
unsigned program_samples = TotalHitCount(program);
double valid_samples_ratio =
1. * js_function_samples / (js_function_samples + program_samples);
i::PrintF("Ratio: %f\n", valid_samples_ratio);
// TODO(alph): Investigate other causes of dropped frames. The ratio
// should be close to 99%.
CHECK_GE(valid_samples_ratio, 0.3);
}
profile->Delete();
}
TEST(SourcePositionTable) {
i::SourcePositionTable info;
// Newly created tables should return NoLineNumberInfo for any lookup.
int no_info = v8::CpuProfileNode::kNoLineNumberInfo;
CHECK_EQ(no_info, info.GetSourceLineNumber(std::numeric_limits<int>::min()));
CHECK_EQ(no_info, info.GetSourceLineNumber(0));
CHECK_EQ(no_info, info.GetSourceLineNumber(1));
CHECK_EQ(no_info, info.GetSourceLineNumber(9));
CHECK_EQ(no_info, info.GetSourceLineNumber(10));
CHECK_EQ(no_info, info.GetSourceLineNumber(11));
CHECK_EQ(no_info, info.GetSourceLineNumber(19));
CHECK_EQ(no_info, info.GetSourceLineNumber(20));
CHECK_EQ(no_info, info.GetSourceLineNumber(21));
CHECK_EQ(no_info, info.GetSourceLineNumber(100));
CHECK_EQ(no_info, info.GetSourceLineNumber(std::numeric_limits<int>::max()));
info.SetPosition(10, 1);
info.SetPosition(20, 2);
// The only valid return values are 1 or 2 - every pc maps to a line number.
CHECK_EQ(1, info.GetSourceLineNumber(std::numeric_limits<int>::min()));
CHECK_EQ(1, info.GetSourceLineNumber(0));
CHECK_EQ(1, info.GetSourceLineNumber(1));
CHECK_EQ(1, info.GetSourceLineNumber(9));
CHECK_EQ(1, info.GetSourceLineNumber(10));
CHECK_EQ(1, info.GetSourceLineNumber(11));
CHECK_EQ(1, info.GetSourceLineNumber(19));
CHECK_EQ(2, info.GetSourceLineNumber(20));
CHECK_EQ(2, info.GetSourceLineNumber(21));
CHECK_EQ(2, info.GetSourceLineNumber(100));
CHECK_EQ(2, info.GetSourceLineNumber(std::numeric_limits<int>::max()));
// Test SetPosition behavior.
info.SetPosition(25, 3);
CHECK_EQ(2, info.GetSourceLineNumber(21));
CHECK_EQ(3, info.GetSourceLineNumber(100));
CHECK_EQ(3, info.GetSourceLineNumber(std::numeric_limits<int>::max()));
}
TEST(MultipleProfilers) {
std::unique_ptr<CpuProfiler> profiler1(new CpuProfiler(CcTest::i_isolate()));
std::unique_ptr<CpuProfiler> profiler2(new CpuProfiler(CcTest::i_isolate()));
profiler1->StartProfiling("1");
profiler2->StartProfiling("2");
profiler1->StopProfiling("1");
profiler2->StopProfiling("2");
}
void ProfileSomeCode(v8::Isolate* isolate) {
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope scope(isolate);
LocalContext context(isolate);
v8::CpuProfiler* profiler = v8::CpuProfiler::New(isolate);
v8::Local<v8::String> profile_name = v8_str("1");
profiler->StartProfiling(profile_name);
const char* source = R"(
function foo() {
var s = {};
for (var i = 0; i < 1e4; ++i) {
for (var j = 0; j < 100; j++) {
s['item' + j] = 'bar';
}
}
}
foo();
)";
CompileRun(source);
profiler->StopProfiling(profile_name);
profiler->Dispose();
}
class IsolateThread : public v8::base::Thread {
public:
IsolateThread() : Thread(Options("IsolateThread")) {}
void Run() override {
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
ProfileSomeCode(isolate);
isolate->Dispose();
}
};
// Checking for crashes and TSAN issues with multiple isolates profiling.
TEST(MultipleIsolates) {
IsolateThread thread1;
IsolateThread thread2;
thread1.Start();
thread2.Start();
thread1.Join();
thread2.Join();
}
} // namespace test_cpu_profiler
} // namespace internal
} // namespace v8
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