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v8/test/cctest/test-profile-generator.cc
Corentin Pescheloche e155881f24 Reland "[profiler] Surface VM & Embedder State" 
This is a reland of 2d087f237e

The changes are :
* Fix redundant reinterpret_cast in test file for MSVC failure
https://crbug.com/v8/12476
* Fix flaky test
https://crbug.com/v8/12475
If a sample is captured during a GC, no embedder context is obtained
defaulting to EMPTY. This is the expected behavior, made it in clear
in implementation and in test.
* Synchronized the embedder context filter behavior with existing
native context filter.

Original change's description:

> Add APIs to surface VMState and new EmbedderState to CpuProfile samples.
>
> EmbedderState:
> * An EmbedderState is defined as a value uint8_t and a v8::context used
> for filtering.
> * EmbedderStates are stack allocated by the embedder, construction and
> destruction set/unset the state to the isolate thread local top.
> * A v8::context is used to filter states that are added to a CpuProfile,
> if the CpuProfile do not have a ContextFilter set or if contexts do not
> match, state defaults to Empty.
>
> * v8:StateTag is already propagated all the way to a Sample, simply add
> an API to surface it.
>
> VMState:
> Change-Id: I7eed08907360b99b0ad20ddcff59c95c7076c85e
> Bug: chromium:1263871
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3188072
> Auto-Submit: Corentin Pescheloche <cpescheloche@fb.com>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78250}

Bug: chromium:1263871
Change-Id: Ief891b05da99c695e9fb70f94ed7ebdecc6c3b7b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3320037
Auto-Submit: Corentin Pescheloche <cpescheloche@fb.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78281}
2021-12-07 19:00:07 +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 "include/v8-function.h"
#include "include/v8-profiler.h"
#include "src/api/api-inl.h"
#include "src/base/strings.h"
#include "src/init/v8.h"
#include "src/logging/log.h"
#include "src/objects/objects-inl.h"
#include "src/profiler/cpu-profiler.h"
#include "src/profiler/profile-generator-inl.h"
#include "src/profiler/symbolizer.h"
#include "test/cctest/cctest.h"
#include "test/cctest/profiler-extension.h"
namespace v8 {
namespace internal {
namespace test_profile_generator {
TEST(ProfileNodeFindOrAddChild) {
CcTest::InitializeVM();
ProfileTree tree(CcTest::i_isolate());
ProfileNode* node = tree.root();
CodeEntry entry1(i::CodeEventListener::FUNCTION_TAG, "aaa");
ProfileNode* childNode1 = node->FindOrAddChild(&entry1);
CHECK(childNode1);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry1));
CodeEntry entry2(i::CodeEventListener::FUNCTION_TAG, "bbb");
ProfileNode* childNode2 = node->FindOrAddChild(&entry2);
CHECK(childNode2);
CHECK_NE(childNode1, childNode2);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry1));
CHECK_EQ(childNode2, node->FindOrAddChild(&entry2));
CodeEntry entry3(i::CodeEventListener::FUNCTION_TAG, "ccc");
ProfileNode* childNode3 = node->FindOrAddChild(&entry3);
CHECK(childNode3);
CHECK_NE(childNode1, childNode3);
CHECK_NE(childNode2, childNode3);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry1));
CHECK_EQ(childNode2, node->FindOrAddChild(&entry2));
CHECK_EQ(childNode3, node->FindOrAddChild(&entry3));
}
TEST(ProfileNodeFindOrAddChildWithLineNumber) {
CcTest::InitializeVM();
ProfileTree tree(CcTest::i_isolate());
ProfileNode* root = tree.root();
CodeEntry a(i::CodeEventListener::FUNCTION_TAG, "a");
ProfileNode* a_node = root->FindOrAddChild(&a, -1);
// a --(22)--> child1
// --(23)--> child1
CodeEntry child1(i::CodeEventListener::FUNCTION_TAG, "child1");
ProfileNode* child1_node = a_node->FindOrAddChild(&child1, 22);
CHECK(child1_node);
CHECK_EQ(child1_node, a_node->FindOrAddChild(&child1, 22));
ProfileNode* child2_node = a_node->FindOrAddChild(&child1, 23);
CHECK(child2_node);
CHECK_NE(child1_node, child2_node);
}
TEST(ProfileNodeFindOrAddChildForSameFunction) {
CcTest::InitializeVM();
const char* aaa = "aaa";
ProfileTree tree(CcTest::i_isolate());
ProfileNode* node = tree.root();
CodeEntry entry1(i::CodeEventListener::FUNCTION_TAG, aaa);
ProfileNode* childNode1 = node->FindOrAddChild(&entry1);
CHECK(childNode1);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry1));
// The same function again.
CodeEntry entry2(i::CodeEventListener::FUNCTION_TAG, aaa);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry2));
// Now with a different security token.
CodeEntry entry3(i::CodeEventListener::FUNCTION_TAG, aaa);
CHECK_EQ(childNode1, node->FindOrAddChild(&entry3));
}
namespace {
class ProfileTreeTestHelper {
public:
explicit ProfileTreeTestHelper(const ProfileTree* tree)
: tree_(tree) { }
ProfileNode* Walk(CodeEntry* entry1, CodeEntry* entry2 = nullptr,
CodeEntry* entry3 = nullptr) {
ProfileNode* node = tree_->root();
node = node->FindChild(entry1);
if (node == nullptr) return nullptr;
if (entry2 != nullptr) {
node = node->FindChild(entry2);
if (node == nullptr) return nullptr;
}
if (entry3 != nullptr) {
node = node->FindChild(entry3);
}
return node;
}
private:
const ProfileTree* tree_;
};
} // namespace
TEST(ProfileTreeAddPathFromEnd) {
CcTest::InitializeVM();
CodeEntry entry1(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry entry2(i::CodeEventListener::FUNCTION_TAG, "bbb");
CodeEntry entry3(i::CodeEventListener::FUNCTION_TAG, "ccc");
ProfileTree tree(CcTest::i_isolate());
ProfileTreeTestHelper helper(&tree);
CHECK(!helper.Walk(&entry1));
CHECK(!helper.Walk(&entry2));
CHECK(!helper.Walk(&entry3));
CodeEntry* path[] = {nullptr, &entry3, nullptr, &entry2,
nullptr, nullptr, &entry1, nullptr};
std::vector<CodeEntry*> path_vec(path, path + arraysize(path));
tree.AddPathFromEnd(path_vec);
CHECK(!helper.Walk(&entry2));
CHECK(!helper.Walk(&entry3));
ProfileNode* node1 = helper.Walk(&entry1);
CHECK(node1);
CHECK_EQ(0u, node1->self_ticks());
CHECK(!helper.Walk(&entry1, &entry1));
CHECK(!helper.Walk(&entry1, &entry3));
ProfileNode* node2 = helper.Walk(&entry1, &entry2);
CHECK(node2);
CHECK_NE(node1, node2);
CHECK_EQ(0u, node2->self_ticks());
CHECK(!helper.Walk(&entry1, &entry2, &entry1));
CHECK(!helper.Walk(&entry1, &entry2, &entry2));
ProfileNode* node3 = helper.Walk(&entry1, &entry2, &entry3);
CHECK(node3);
CHECK_NE(node1, node3);
CHECK_NE(node2, node3);
CHECK_EQ(1u, node3->self_ticks());
tree.AddPathFromEnd(path_vec);
CHECK_EQ(node1, helper.Walk(&entry1));
CHECK_EQ(node2, helper.Walk(&entry1, &entry2));
CHECK_EQ(node3, helper.Walk(&entry1, &entry2, &entry3));
CHECK_EQ(0u, node1->self_ticks());
CHECK_EQ(0u, node2->self_ticks());
CHECK_EQ(2u, node3->self_ticks());
CodeEntry* path2[] = {&entry2, &entry2, &entry1};
std::vector<CodeEntry*> path2_vec(path2, path2 + arraysize(path2));
tree.AddPathFromEnd(path2_vec);
CHECK(!helper.Walk(&entry2));
CHECK(!helper.Walk(&entry3));
CHECK_EQ(node1, helper.Walk(&entry1));
CHECK(!helper.Walk(&entry1, &entry1));
CHECK(!helper.Walk(&entry1, &entry3));
CHECK_EQ(node2, helper.Walk(&entry1, &entry2));
CHECK(!helper.Walk(&entry1, &entry2, &entry1));
CHECK_EQ(node3, helper.Walk(&entry1, &entry2, &entry3));
CHECK_EQ(2u, node3->self_ticks());
ProfileNode* node4 = helper.Walk(&entry1, &entry2, &entry2);
CHECK(node4);
CHECK_NE(node3, node4);
CHECK_EQ(1u, node4->self_ticks());
}
TEST(ProfileTreeAddPathFromEndWithLineNumbers) {
CcTest::InitializeVM();
CodeEntry a(i::CodeEventListener::FUNCTION_TAG, "a");
CodeEntry b(i::CodeEventListener::FUNCTION_TAG, "b");
CodeEntry c(i::CodeEventListener::FUNCTION_TAG, "c");
ProfileTree tree(CcTest::i_isolate());
ProfileTreeTestHelper helper(&tree);
ProfileStackTrace path = {{&c, 5}, {&b, 3}, {&a, 1}};
tree.AddPathFromEnd(path, v8::CpuProfileNode::kNoLineNumberInfo, true,
v8::CpuProfilingMode::kCallerLineNumbers);
ProfileNode* a_node =
tree.root()->FindChild(&a, v8::CpuProfileNode::kNoLineNumberInfo);
tree.Print();
CHECK(a_node);
ProfileNode* b_node = a_node->FindChild(&b, 1);
CHECK(b_node);
ProfileNode* c_node = b_node->FindChild(&c, 3);
CHECK(c_node);
}
TEST(ProfileTreeCalculateTotalTicks) {
CcTest::InitializeVM();
ProfileTree empty_tree(CcTest::i_isolate());
CHECK_EQ(0u, empty_tree.root()->self_ticks());
empty_tree.root()->IncrementSelfTicks();
CHECK_EQ(1u, empty_tree.root()->self_ticks());
CodeEntry entry1(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* e1_path[] = {&entry1};
std::vector<CodeEntry*> e1_path_vec(e1_path, e1_path + arraysize(e1_path));
ProfileTree single_child_tree(CcTest::i_isolate());
single_child_tree.AddPathFromEnd(e1_path_vec);
single_child_tree.root()->IncrementSelfTicks();
CHECK_EQ(1u, single_child_tree.root()->self_ticks());
ProfileTreeTestHelper single_child_helper(&single_child_tree);
ProfileNode* node1 = single_child_helper.Walk(&entry1);
CHECK(node1);
CHECK_EQ(1u, single_child_tree.root()->self_ticks());
CHECK_EQ(1u, node1->self_ticks());
CodeEntry entry2(i::CodeEventListener::FUNCTION_TAG, "bbb");
CodeEntry* e2_e1_path[] = {&entry2, &entry1};
std::vector<CodeEntry*> e2_e1_path_vec(e2_e1_path,
e2_e1_path + arraysize(e2_e1_path));
ProfileTree flat_tree(CcTest::i_isolate());
ProfileTreeTestHelper flat_helper(&flat_tree);
flat_tree.AddPathFromEnd(e1_path_vec);
flat_tree.AddPathFromEnd(e1_path_vec);
flat_tree.AddPathFromEnd(e2_e1_path_vec);
flat_tree.AddPathFromEnd(e2_e1_path_vec);
flat_tree.AddPathFromEnd(e2_e1_path_vec);
// Results in {root,0,0} -> {entry1,0,2} -> {entry2,0,3}
CHECK_EQ(0u, flat_tree.root()->self_ticks());
node1 = flat_helper.Walk(&entry1);
CHECK(node1);
CHECK_EQ(2u, node1->self_ticks());
ProfileNode* node2 = flat_helper.Walk(&entry1, &entry2);
CHECK(node2);
CHECK_EQ(3u, node2->self_ticks());
// Must calculate {root,5,0} -> {entry1,5,2} -> {entry2,3,3}
CHECK_EQ(0u, flat_tree.root()->self_ticks());
CHECK_EQ(2u, node1->self_ticks());
CodeEntry* e2_path[] = {&entry2};
std::vector<CodeEntry*> e2_path_vec(e2_path, e2_path + arraysize(e2_path));
CodeEntry entry3(i::CodeEventListener::FUNCTION_TAG, "ccc");
CodeEntry* e3_path[] = {&entry3};
std::vector<CodeEntry*> e3_path_vec(e3_path, e3_path + arraysize(e3_path));
ProfileTree wide_tree(CcTest::i_isolate());
ProfileTreeTestHelper wide_helper(&wide_tree);
wide_tree.AddPathFromEnd(e1_path_vec);
wide_tree.AddPathFromEnd(e1_path_vec);
wide_tree.AddPathFromEnd(e2_e1_path_vec);
wide_tree.AddPathFromEnd(e2_path_vec);
wide_tree.AddPathFromEnd(e2_path_vec);
wide_tree.AddPathFromEnd(e2_path_vec);
wide_tree.AddPathFromEnd(e3_path_vec);
wide_tree.AddPathFromEnd(e3_path_vec);
wide_tree.AddPathFromEnd(e3_path_vec);
wide_tree.AddPathFromEnd(e3_path_vec);
// Results in -> {entry1,0,2} -> {entry2,0,1}
// {root,0,0} -> {entry2,0,3}
// -> {entry3,0,4}
CHECK_EQ(0u, wide_tree.root()->self_ticks());
node1 = wide_helper.Walk(&entry1);
CHECK(node1);
CHECK_EQ(2u, node1->self_ticks());
ProfileNode* node1_2 = wide_helper.Walk(&entry1, &entry2);
CHECK(node1_2);
CHECK_EQ(1u, node1_2->self_ticks());
node2 = wide_helper.Walk(&entry2);
CHECK(node2);
CHECK_EQ(3u, node2->self_ticks());
ProfileNode* node3 = wide_helper.Walk(&entry3);
CHECK(node3);
CHECK_EQ(4u, node3->self_ticks());
// Calculates -> {entry1,3,2} -> {entry2,1,1}
// {root,10,0} -> {entry2,3,3}
// -> {entry3,4,4}
CHECK_EQ(0u, wide_tree.root()->self_ticks());
CHECK_EQ(2u, node1->self_ticks());
CHECK_EQ(1u, node1_2->self_ticks());
CHECK_EQ(3u, node2->self_ticks());
CHECK_EQ(4u, node3->self_ticks());
}
static inline i::Address ToAddress(int n) { return static_cast<i::Address>(n); }
static inline void* ToPointer(int n) { return reinterpret_cast<void*>(n); }
TEST(CodeMapAddCode) {
CodeEntryStorage storage;
CodeMap code_map(storage);
CodeEntry* entry1 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* entry2 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "bbb");
CodeEntry* entry3 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "ccc");
CodeEntry* entry4 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "ddd");
code_map.AddCode(ToAddress(0x1500), entry1, 0x200);
code_map.AddCode(ToAddress(0x1700), entry2, 0x100);
code_map.AddCode(ToAddress(0x1900), entry3, 0x50);
code_map.AddCode(ToAddress(0x1950), entry4, 0x10);
CHECK(!code_map.FindEntry(0));
CHECK(!code_map.FindEntry(ToAddress(0x1500 - 1)));
CHECK_EQ(entry1, code_map.FindEntry(ToAddress(0x1500)));
CHECK_EQ(entry1, code_map.FindEntry(ToAddress(0x1500 + 0x100)));
CHECK_EQ(entry1, code_map.FindEntry(ToAddress(0x1500 + 0x200 - 1)));
CHECK_EQ(entry2, code_map.FindEntry(ToAddress(0x1700)));
CHECK_EQ(entry2, code_map.FindEntry(ToAddress(0x1700 + 0x50)));
CHECK_EQ(entry2, code_map.FindEntry(ToAddress(0x1700 + 0x100 - 1)));
CHECK(!code_map.FindEntry(ToAddress(0x1700 + 0x100)));
CHECK(!code_map.FindEntry(ToAddress(0x1900 - 1)));
CHECK_EQ(entry3, code_map.FindEntry(ToAddress(0x1900)));
CHECK_EQ(entry3, code_map.FindEntry(ToAddress(0x1900 + 0x28)));
CHECK_EQ(entry4, code_map.FindEntry(ToAddress(0x1950)));
CHECK_EQ(entry4, code_map.FindEntry(ToAddress(0x1950 + 0x7)));
CHECK_EQ(entry4, code_map.FindEntry(ToAddress(0x1950 + 0x10 - 1)));
CHECK(!code_map.FindEntry(ToAddress(0x1950 + 0x10)));
CHECK(!code_map.FindEntry(ToAddress(0xFFFFFFFF)));
}
TEST(CodeMapMoveAndDeleteCode) {
CodeEntryStorage storage;
CodeMap code_map(storage);
CodeEntry* entry1 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* entry2 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "bbb");
code_map.AddCode(ToAddress(0x1500), entry1, 0x200);
code_map.AddCode(ToAddress(0x1700), entry2, 0x100);
CHECK_EQ(entry1, code_map.FindEntry(ToAddress(0x1500)));
CHECK_EQ(entry2, code_map.FindEntry(ToAddress(0x1700)));
code_map.MoveCode(ToAddress(0x1500), ToAddress(0x1700)); // Deprecate bbb.
CHECK(!code_map.FindEntry(ToAddress(0x1500)));
CHECK_EQ(entry1, code_map.FindEntry(ToAddress(0x1700)));
}
TEST(CodeMapClear) {
CodeEntryStorage storage;
CodeMap code_map(storage);
CodeEntry* entry1 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* entry2 = storage.Create(i::CodeEventListener::FUNCTION_TAG, "bbb");
code_map.AddCode(ToAddress(0x1500), entry1, 0x200);
code_map.AddCode(ToAddress(0x1700), entry2, 0x100);
code_map.Clear();
CHECK(!code_map.FindEntry(ToAddress(0x1500)));
CHECK(!code_map.FindEntry(ToAddress(0x1700)));
// Check that Clear() doesn't cause issues if called twice.
code_map.Clear();
}
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
TEST(SymbolizeTickSample) {
TestSetup test_setup;
CodeEntryStorage storage;
CodeMap code_map(storage);
Symbolizer symbolizer(&code_map);
CodeEntry* entry1 = storage.Create(i::Logger::FUNCTION_TAG, "aaa");
CodeEntry* entry2 = storage.Create(i::Logger::FUNCTION_TAG, "bbb");
CodeEntry* entry3 = storage.Create(i::Logger::FUNCTION_TAG, "ccc");
symbolizer.code_map()->AddCode(ToAddress(0x1500), entry1, 0x200);
symbolizer.code_map()->AddCode(ToAddress(0x1700), entry2, 0x100);
symbolizer.code_map()->AddCode(ToAddress(0x1900), entry3, 0x50);
// We are building the following calls tree:
// -> aaa - sample1
// aaa -> bbb -> ccc - sample2
// -> ccc -> aaa - sample3
TickSample sample1;
sample1.pc = ToPointer(0x1600);
sample1.tos = ToPointer(0x1500);
sample1.stack[0] = ToPointer(0x1510);
sample1.frames_count = 1;
Symbolizer::SymbolizedSample symbolized =
symbolizer.SymbolizeTickSample(sample1);
ProfileStackTrace& stack_trace = symbolized.stack_trace;
CHECK_EQ(2, stack_trace.size());
CHECK_EQ(entry1, stack_trace[0].code_entry);
CHECK_EQ(entry1, stack_trace[1].code_entry);
TickSample sample2;
sample2.pc = ToPointer(0x1925);
sample2.tos = ToPointer(0x1900);
sample2.stack[0] = ToPointer(0x1780);
sample2.stack[1] = ToPointer(0x10000); // non-existent.
sample2.stack[2] = ToPointer(0x1620);
sample2.frames_count = 3;
symbolized = symbolizer.SymbolizeTickSample(sample2);
stack_trace = symbolized.stack_trace;
CHECK_EQ(4, stack_trace.size());
CHECK_EQ(entry3, stack_trace[0].code_entry);
CHECK_EQ(entry2, stack_trace[1].code_entry);
CHECK_EQ(nullptr, stack_trace[2].code_entry);
CHECK_EQ(entry1, stack_trace[3].code_entry);
TickSample sample3;
sample3.pc = ToPointer(0x1510);
sample3.tos = ToPointer(0x1500);
sample3.stack[0] = ToPointer(0x1910);
sample3.stack[1] = ToPointer(0x1610);
sample3.frames_count = 2;
symbolized = symbolizer.SymbolizeTickSample(sample3);
stack_trace = symbolized.stack_trace;
CHECK_EQ(3, stack_trace.size());
CHECK_EQ(entry1, stack_trace[0].code_entry);
CHECK_EQ(entry3, stack_trace[1].code_entry);
CHECK_EQ(entry1, stack_trace[2].code_entry);
}
static void CheckNodeIds(const ProfileNode* node, unsigned* expectedId) {
CHECK_EQ((*expectedId)++, node->id());
for (const ProfileNode* child : *node->children()) {
CheckNodeIds(child, expectedId);
}
}
TEST(SampleIds) {
TestSetup test_setup;
i::Isolate* isolate = CcTest::i_isolate();
CpuProfiler profiler(isolate);
CpuProfilesCollection profiles(isolate);
profiles.set_cpu_profiler(&profiler);
profiles.StartProfiling("", {CpuProfilingMode::kLeafNodeLineNumbers});
CodeEntryStorage storage;
CodeMap code_map(storage);
Symbolizer symbolizer(&code_map);
CodeEntry* entry1 = storage.Create(i::Logger::FUNCTION_TAG, "aaa");
CodeEntry* entry2 = storage.Create(i::Logger::FUNCTION_TAG, "bbb");
CodeEntry* entry3 = storage.Create(i::Logger::FUNCTION_TAG, "ccc");
symbolizer.code_map()->AddCode(ToAddress(0x1500), entry1, 0x200);
symbolizer.code_map()->AddCode(ToAddress(0x1700), entry2, 0x100);
symbolizer.code_map()->AddCode(ToAddress(0x1900), entry3, 0x50);
// We are building the following calls tree:
// -> aaa #3 - sample1
// (root)#1 -> aaa #2 -> bbb #4 -> ccc #5 - sample2
// -> ccc #6 -> aaa #7 - sample3
TickSample sample1;
sample1.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample1.pc = ToPointer(0x1600);
sample1.stack[0] = ToPointer(0x1510);
sample1.frames_count = 1;
auto symbolized = symbolizer.SymbolizeTickSample(sample1);
profiles.AddPathToCurrentProfiles(
sample1.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
TickSample sample2;
sample2.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample2.pc = ToPointer(0x1925);
sample2.stack[0] = ToPointer(0x1780);
sample2.stack[1] = ToPointer(0x10000); // non-existent.
sample2.stack[2] = ToPointer(0x1620);
sample2.frames_count = 3;
symbolized = symbolizer.SymbolizeTickSample(sample2);
profiles.AddPathToCurrentProfiles(
sample2.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
TickSample sample3;
sample3.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample3.pc = ToPointer(0x1510);
sample3.stack[0] = ToPointer(0x1910);
sample3.stack[1] = ToPointer(0x1610);
sample3.frames_count = 2;
symbolized = symbolizer.SymbolizeTickSample(sample3);
profiles.AddPathToCurrentProfiles(
sample3.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
CpuProfile* profile = profiles.StopProfiling("");
unsigned nodeId = 1;
CheckNodeIds(profile->top_down()->root(), &nodeId);
CHECK_EQ(7u, nodeId - 1);
CHECK_EQ(3, profile->samples_count());
unsigned expected_id[] = {3, 5, 7};
for (int i = 0; i < 3; i++) {
CHECK_EQ(expected_id[i], profile->sample(i).node->id());
}
}
namespace {
class DiscardedSamplesDelegateImpl : public v8::DiscardedSamplesDelegate {
public:
DiscardedSamplesDelegateImpl() : DiscardedSamplesDelegate() {}
void Notify() override {}
};
class MockPlatform : public TestPlatform {
public:
MockPlatform()
: old_platform_(i::V8::GetCurrentPlatform()),
mock_task_runner_(new MockTaskRunner()) {
// Now that it's completely constructed, make this the current platform.
i::V8::SetPlatformForTesting(this);
}
// When done, explicitly revert to old_platform_.
~MockPlatform() override { i::V8::SetPlatformForTesting(old_platform_); }
std::shared_ptr<v8::TaskRunner> GetForegroundTaskRunner(
v8::Isolate*) override {
return mock_task_runner_;
}
int posted_count() { return mock_task_runner_->posted_count(); }
private:
class MockTaskRunner : public v8::TaskRunner {
public:
void PostTask(std::unique_ptr<v8::Task> task) override {
task->Run();
posted_count_++;
}
void PostDelayedTask(std::unique_ptr<Task> task,
double delay_in_seconds) override {
task_ = std::move(task);
delay_ = delay_in_seconds;
}
void PostIdleTask(std::unique_ptr<IdleTask> task) override {
UNREACHABLE();
}
bool IdleTasksEnabled() override { return false; }
int posted_count() { return posted_count_; }
private:
int posted_count_ = 0;
double delay_ = -1;
std::unique_ptr<Task> task_;
};
v8::Platform* old_platform_;
std::shared_ptr<MockTaskRunner> mock_task_runner_;
};
} // namespace
TEST(MaxSamplesCallback) {
i::Isolate* isolate = CcTest::i_isolate();
CpuProfilesCollection profiles(isolate);
CpuProfiler profiler(isolate);
profiles.set_cpu_profiler(&profiler);
MockPlatform* mock_platform = new MockPlatform();
std::unique_ptr<DiscardedSamplesDelegateImpl> impl =
std::make_unique<DiscardedSamplesDelegateImpl>(
DiscardedSamplesDelegateImpl());
profiles.StartProfiling("",
{v8::CpuProfilingMode::kLeafNodeLineNumbers, 1, 1,
MaybeLocal<v8::Context>()},
std::move(impl));
CodeEntryStorage storage;
CodeMap code_map(storage);
Symbolizer symbolizer(&code_map);
TickSample sample1;
sample1.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample1.pc = ToPointer(0x1600);
sample1.stack[0] = ToPointer(0x1510);
sample1.frames_count = 1;
auto symbolized = symbolizer.SymbolizeTickSample(sample1);
profiles.AddPathToCurrentProfiles(
sample1.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
CHECK_EQ(0, mock_platform->posted_count());
TickSample sample2;
sample2.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample2.pc = ToPointer(0x1925);
sample2.stack[0] = ToPointer(0x1780);
sample2.frames_count = 2;
symbolized = symbolizer.SymbolizeTickSample(sample2);
profiles.AddPathToCurrentProfiles(
sample2.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
CHECK_EQ(1, mock_platform->posted_count());
TickSample sample3;
sample3.timestamp = v8::base::TimeTicks::HighResolutionNow();
sample3.pc = ToPointer(0x1510);
sample3.frames_count = 3;
symbolized = symbolizer.SymbolizeTickSample(sample3);
profiles.AddPathToCurrentProfiles(
sample3.timestamp, symbolized.stack_trace, symbolized.src_line, true,
base::TimeDelta(), StateTag::JS, EmbedderStateTag::EMPTY);
CHECK_EQ(1, mock_platform->posted_count());
// Teardown
profiles.StopProfiling("");
delete mock_platform;
}
TEST(NoSamples) {
TestSetup test_setup;
i::Isolate* isolate = CcTest::i_isolate();
CpuProfiler profiler(isolate);
CpuProfilesCollection profiles(isolate);
profiles.set_cpu_profiler(&profiler);
profiles.StartProfiling("");
CodeEntryStorage storage;
CodeMap code_map(storage);
Symbolizer symbolizer(&code_map);
CodeEntry* entry1 = storage.Create(i::Logger::FUNCTION_TAG, "aaa");
symbolizer.code_map()->AddCode(ToAddress(0x1500), entry1, 0x200);
// We are building the following calls tree:
// (root)#1 -> aaa #2 -> aaa #3 - sample1
TickSample sample1;
sample1.pc = ToPointer(0x1600);
sample1.stack[0] = ToPointer(0x1510);
sample1.frames_count = 1;
auto symbolized = symbolizer.SymbolizeTickSample(sample1);
profiles.AddPathToCurrentProfiles(v8::base::TimeTicks::HighResolutionNow(),
symbolized.stack_trace, symbolized.src_line,
true, base::TimeDelta(), StateTag::JS,
EmbedderStateTag::EMPTY);
CpuProfile* profile = profiles.StopProfiling("");
unsigned nodeId = 1;
CheckNodeIds(profile->top_down()->root(), &nodeId);
CHECK_EQ(3u, nodeId - 1);
CHECK_EQ(1, profile->samples_count());
}
static const ProfileNode* PickChild(const ProfileNode* parent,
const char* name) {
for (const ProfileNode* child : *parent->children()) {
if (strcmp(child->entry()->name(), name) == 0) return child;
}
return nullptr;
}
TEST(RecordStackTraceAtStartProfiling) {
// This test does not pass with inlining enabled since inlined functions
// don't appear in the stack trace.
i::FLAG_turbo_inlining = false;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext({PROFILER_EXTENSION_ID});
v8::Context::Scope context_scope(env);
std::unique_ptr<i::CpuProfiler> iprofiler(
new i::CpuProfiler(CcTest::i_isolate()));
i::ProfilerExtension::set_profiler(iprofiler.get());
CompileRun(
"function c() { startProfiling(); }\n"
"function b() { c(); }\n"
"function a() { b(); }\n"
"a();\n"
"stopProfiling();");
CHECK_EQ(1, iprofiler->GetProfilesCount());
CpuProfile* profile = iprofiler->GetProfile(0);
const ProfileTree* topDown = profile->top_down();
const ProfileNode* current = topDown->root();
const_cast<ProfileNode*>(current)->Print(0);
// The tree should look like this:
// (root)
// ""
// a
// b
// c
// There can also be:
// startProfiling
// if the sampler managed to get a tick.
current = PickChild(current, "");
CHECK(const_cast<ProfileNode*>(current));
current = PickChild(current, "a");
CHECK(const_cast<ProfileNode*>(current));
current = PickChild(current, "b");
CHECK(const_cast<ProfileNode*>(current));
current = PickChild(current, "c");
CHECK(const_cast<ProfileNode*>(current));
CHECK(current->children()->empty() || current->children()->size() == 1);
if (current->children()->size() == 1) {
current = PickChild(current, "startProfiling");
CHECK(current->children()->empty());
}
}
TEST(Issue51919) {
CpuProfilesCollection collection(CcTest::i_isolate());
CpuProfiler profiler(CcTest::i_isolate());
collection.set_cpu_profiler(&profiler);
base::EmbeddedVector<char*, CpuProfilesCollection::kMaxSimultaneousProfiles>
titles;
for (int i = 0; i < CpuProfilesCollection::kMaxSimultaneousProfiles; ++i) {
base::Vector<char> title = v8::base::Vector<char>::New(16);
base::SNPrintF(title, "%d", i);
CHECK_EQ(CpuProfilingStatus::kStarted,
collection.StartProfiling(title.begin()));
titles[i] = title.begin();
}
CHECK_EQ(CpuProfilingStatus::kErrorTooManyProfilers,
collection.StartProfiling("maximum"));
for (int i = 0; i < CpuProfilesCollection::kMaxSimultaneousProfiles; ++i)
i::DeleteArray(titles[i]);
}
static const v8::CpuProfileNode* PickChild(const v8::CpuProfileNode* parent,
const char* name) {
for (int i = 0; i < parent->GetChildrenCount(); ++i) {
const v8::CpuProfileNode* child = parent->GetChild(i);
v8::String::Utf8Value function_name(CcTest::isolate(),
child->GetFunctionName());
if (strcmp(*function_name, name) == 0) return child;
}
return nullptr;
}
TEST(ProfileNodeScriptId) {
// This test does not pass with inlining enabled since inlined functions
// don't appear in the stack trace.
i::FLAG_turbo_inlining = false;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext({PROFILER_EXTENSION_ID});
v8::Context::Scope context_scope(env);
std::unique_ptr<CpuProfiler> iprofiler(new CpuProfiler(CcTest::i_isolate()));
i::ProfilerExtension::set_profiler(iprofiler.get());
v8::Local<v8::Script> script_a =
v8_compile(v8_str("function a() { startProfiling(); }\n"));
script_a->Run(env).ToLocalChecked();
v8::Local<v8::Script> script_b =
v8_compile(v8_str("function b() { a(); }\n"
"b();\n"
"stopProfiling();\n"));
script_b->Run(env).ToLocalChecked();
CHECK_EQ(1, iprofiler->GetProfilesCount());
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:
// (root)
// ""
// b
// a
// There can also be:
// startProfiling
// if the sampler managed to get a tick.
current = PickChild(current, "");
CHECK(const_cast<v8::CpuProfileNode*>(current));
current = PickChild(current, "b");
CHECK(const_cast<v8::CpuProfileNode*>(current));
CHECK_EQ(script_b->GetUnboundScript()->GetId(), current->GetScriptId());
current = PickChild(current, "a");
CHECK(const_cast<v8::CpuProfileNode*>(current));
CHECK_EQ(script_a->GetUnboundScript()->GetId(), current->GetScriptId());
}
static const char* line_number_test_source_existing_functions =
"function foo_at_the_first_line() {\n"
"}\n"
"foo_at_the_first_line();\n"
"function lazy_func_at_forth_line() {}\n";
static const char* line_number_test_source_profile_time_functions =
"// Empty first line\n"
"function bar_at_the_second_line() {\n"
" foo_at_the_first_line();\n"
"}\n"
"bar_at_the_second_line();\n"
"function lazy_func_at_6th_line() {}";
int GetFunctionLineNumber(CpuProfiler* profiler, LocalContext* env,
i::Isolate* isolate, const char* name) {
CodeMap* code_map = profiler->symbolizer()->code_map();
i::Handle<i::JSFunction> func = i::Handle<i::JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
(*env)->Global()->Get(env->local(), v8_str(name)).ToLocalChecked())));
CodeEntry* func_entry =
code_map->FindEntry(func->abstract_code(isolate).InstructionStart());
if (!func_entry) FATAL("%s", name);
return func_entry->line_number();
}
TEST(LineNumber) {
CcTest::InitializeVM();
LocalContext env;
i::Isolate* isolate = CcTest::i_isolate();
TestSetup test_setup;
i::HandleScope scope(isolate);
CompileRun(line_number_test_source_existing_functions);
CpuProfiler profiler(isolate);
profiler.StartProfiling("LineNumber");
CompileRun(line_number_test_source_profile_time_functions);
profiler.processor()->StopSynchronously();
bool is_lazy = i::FLAG_lazy;
CHECK_EQ(1, GetFunctionLineNumber(&profiler, &env, isolate,
"foo_at_the_first_line"));
CHECK_EQ(is_lazy ? 0 : 4, GetFunctionLineNumber(&profiler, &env, isolate,
"lazy_func_at_forth_line"));
CHECK_EQ(2, GetFunctionLineNumber(&profiler, &env, isolate,
"bar_at_the_second_line"));
CHECK_EQ(is_lazy ? 0 : 6, GetFunctionLineNumber(&profiler, &env, isolate,
"lazy_func_at_6th_line"));
profiler.StopProfiling("LineNumber");
}
TEST(BailoutReason) {
#ifndef V8_LITE_MODE
i::FLAG_allow_natives_syntax = true;
i::FLAG_always_opt = false;
i::FLAG_opt = true;
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> env = CcTest::NewContext({PROFILER_EXTENSION_ID});
v8::Context::Scope context_scope(env);
std::unique_ptr<CpuProfiler> iprofiler(new CpuProfiler(CcTest::i_isolate()));
i::ProfilerExtension::set_profiler(iprofiler.get());
CHECK_EQ(0, iprofiler->GetProfilesCount());
v8::Local<v8::Function> function = CompileRun(
"function Debugger() {\n"
" startProfiling();\n"
"}"
"Debugger")
.As<v8::Function>();
i::Handle<i::JSFunction> i_function =
i::Handle<i::JSFunction>::cast(v8::Utils::OpenHandle(*function));
USE(i_function);
CompileRun(
"%PrepareFunctionForOptimization(Debugger);"
"%OptimizeFunctionOnNextCall(Debugger);"
"%NeverOptimizeFunction(Debugger);"
"Debugger();"
"stopProfiling()");
CHECK_EQ(1, iprofiler->GetProfilesCount());
const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
CHECK(profile);
const v8::CpuProfileNode* current = profile->GetTopDownRoot();
reinterpret_cast<ProfileNode*>(
const_cast<v8::CpuProfileNode*>(current))->Print(0);
// The tree should look like this:
// (root)
// ""
// kOptimizationDisabledForTest
current = PickChild(current, "");
CHECK(const_cast<v8::CpuProfileNode*>(current));
current = PickChild(current, "Debugger");
CHECK(const_cast<v8::CpuProfileNode*>(current));
CHECK(
!strcmp("Optimization is always disabled", current->GetBailoutReason()));
#endif // V8_LITE_MODE
}
TEST(NodeSourceTypes) {
ProfileTree tree(CcTest::i_isolate());
CodeEntry function_entry(CodeEventListener::FUNCTION_TAG, "function");
tree.AddPathFromEnd({&function_entry});
CodeEntry builtin_entry(CodeEventListener::BUILTIN_TAG, "builtin");
tree.AddPathFromEnd({&builtin_entry});
CodeEntry callback_entry(CodeEventListener::CALLBACK_TAG, "callback");
tree.AddPathFromEnd({&callback_entry});
CodeEntry regex_entry(CodeEventListener::REG_EXP_TAG, "regex");
tree.AddPathFromEnd({&regex_entry});
CodeEntry stub_entry(CodeEventListener::STUB_TAG, "stub");
tree.AddPathFromEnd({&stub_entry});
tree.AddPathFromEnd({CodeEntry::gc_entry()});
tree.AddPathFromEnd({CodeEntry::idle_entry()});
tree.AddPathFromEnd({CodeEntry::program_entry()});
tree.AddPathFromEnd({CodeEntry::unresolved_entry()});
auto* root = tree.root();
CHECK(root);
CHECK_EQ(root->source_type(), v8::CpuProfileNode::kInternal);
auto* function_node = PickChild(root, "function");
CHECK(function_node);
CHECK_EQ(function_node->source_type(), v8::CpuProfileNode::kScript);
auto* builtin_node = PickChild(root, "builtin");
CHECK(builtin_node);
CHECK_EQ(builtin_node->source_type(), v8::CpuProfileNode::kBuiltin);
auto* callback_node = PickChild(root, "callback");
CHECK(callback_node);
CHECK_EQ(callback_node->source_type(), v8::CpuProfileNode::kCallback);
auto* regex_node = PickChild(root, "regex");
CHECK(regex_node);
CHECK_EQ(regex_node->source_type(), v8::CpuProfileNode::kInternal);
auto* stub_node = PickChild(root, "stub");
CHECK(stub_node);
CHECK_EQ(stub_node->source_type(), v8::CpuProfileNode::kInternal);
auto* gc_node = PickChild(root, "(garbage collector)");
CHECK(gc_node);
CHECK_EQ(gc_node->source_type(), v8::CpuProfileNode::kInternal);
auto* idle_node = PickChild(root, "(idle)");
CHECK(idle_node);
CHECK_EQ(idle_node->source_type(), v8::CpuProfileNode::kInternal);
auto* program_node = PickChild(root, "(program)");
CHECK(program_node);
CHECK_EQ(program_node->source_type(), v8::CpuProfileNode::kInternal);
auto* unresolved_node = PickChild(root, "(unresolved function)");
CHECK(unresolved_node);
CHECK_EQ(unresolved_node->source_type(), v8::CpuProfileNode::kUnresolved);
}
TEST(CodeMapRemoveCode) {
CodeEntryStorage storage;
CodeMap code_map(storage);
CodeEntry* entry = storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
code_map.AddCode(ToAddress(0x1000), entry, 0x100);
CHECK(code_map.RemoveCode(entry));
CHECK(!code_map.FindEntry(ToAddress(0x1000)));
// Test that when two entries share the same address, we remove only the
// entry that we desired to.
CodeEntry* colliding_entry1 =
storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* colliding_entry2 =
storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
code_map.AddCode(ToAddress(0x1000), colliding_entry1, 0x100);
code_map.AddCode(ToAddress(0x1000), colliding_entry2, 0x100);
CHECK(code_map.RemoveCode(colliding_entry1));
CHECK_EQ(code_map.FindEntry(ToAddress(0x1000)), colliding_entry2);
CHECK(code_map.RemoveCode(colliding_entry2));
CHECK(!code_map.FindEntry(ToAddress(0x1000)));
}
TEST(CodeMapMoveOverlappingCode) {
CodeEntryStorage storage;
CodeMap code_map(storage);
CodeEntry* colliding_entry1 =
storage.Create(i::CodeEventListener::FUNCTION_TAG, "aaa");
CodeEntry* colliding_entry2 =
storage.Create(i::CodeEventListener::FUNCTION_TAG, "bbb");
CodeEntry* after_entry =
storage.Create(i::CodeEventListener::FUNCTION_TAG, "ccc");
code_map.AddCode(ToAddress(0x1400), colliding_entry1, 0x200);
code_map.AddCode(ToAddress(0x1400), colliding_entry2, 0x200);
code_map.AddCode(ToAddress(0x1800), after_entry, 0x200);
CHECK_EQ(colliding_entry1->instruction_start(), ToAddress(0x1400));
CHECK_EQ(colliding_entry2->instruction_start(), ToAddress(0x1400));
CHECK_EQ(after_entry->instruction_start(), ToAddress(0x1800));
CHECK(code_map.FindEntry(ToAddress(0x1400)));
CHECK_EQ(code_map.FindEntry(ToAddress(0x1800)), after_entry);
code_map.MoveCode(ToAddress(0x1400), ToAddress(0x1600));
CHECK(!code_map.FindEntry(ToAddress(0x1400)));
CHECK(code_map.FindEntry(ToAddress(0x1600)));
CHECK_EQ(code_map.FindEntry(ToAddress(0x1800)), after_entry);
CHECK_EQ(colliding_entry1->instruction_start(), ToAddress(0x1600));
CHECK_EQ(colliding_entry2->instruction_start(), ToAddress(0x1600));
CHECK_EQ(after_entry->instruction_start(), ToAddress(0x1800));
}
} // namespace test_profile_generator
} // namespace internal
} // namespace v8
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