deps: V8: backport 76c3ac5 from upstream
This fixes a bug in the CPU profiler where some ticks were attributed
to the wrong file.
Original commit message:
[cpu-profiler] Fix script name when recording inlining info
Use the script name from the shared function info to create an
inline entry. Otherwise functions are attributed to the wrong file
in the CpuProfileNode.
See https://github.com/GoogleCloudPlatform/cloud-profiler-nodejs/issues/89
Bug: v8:7203, v8:7241
Change-Id: I8ea31943741770e6611275a9c93375922b934547
Reviewed-on: https://chromium-review.googlesource.com/848093
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50339}
Refs: 76c3ac58b0
PR-URL: https://github.com/nodejs/node/pull/18298
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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@ -27,7 +27,7 @@
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# Reset this number to 0 on major V8 upgrades.
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# Increment by one for each non-official patch applied to deps/v8.
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'v8_embedder_string': '-node.8',
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'v8_embedder_string': '-node.9',
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# Enable disassembler for `--print-code` v8 options
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'v8_enable_disassembler': 1,
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17
deps/v8/src/profiler/profiler-listener.cc
vendored
17
deps/v8/src/profiler/profiler-listener.cc
vendored
@ -230,11 +230,18 @@ void ProfilerListener::RecordInliningInfo(CodeEntry* entry,
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SharedFunctionInfo* shared_info = SharedFunctionInfo::cast(
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deopt_input_data->LiteralArray()->get(shared_info_id));
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if (!depth++) continue; // Skip the current function itself.
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CodeEntry* inline_entry = new CodeEntry(
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entry->tag(), GetFunctionName(shared_info->DebugName()),
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CodeEntry::kEmptyNamePrefix, entry->resource_name(),
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CpuProfileNode::kNoLineNumberInfo,
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CpuProfileNode::kNoColumnNumberInfo, NULL, code->instruction_start());
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const char* resource_name =
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(shared_info->script()->IsScript() &&
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Script::cast(shared_info->script())->name()->IsName())
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? GetName(Name::cast(Script::cast(shared_info->script())->name()))
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: CodeEntry::kEmptyResourceName;
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CodeEntry* inline_entry =
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new CodeEntry(entry->tag(), GetFunctionName(shared_info->DebugName()),
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CodeEntry::kEmptyNamePrefix, resource_name,
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CpuProfileNode::kNoLineNumberInfo,
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CpuProfileNode::kNoColumnNumberInfo, nullptr,
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code->instruction_start());
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inline_entry->FillFunctionInfo(shared_info);
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inline_stack.push_back(inline_entry);
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}
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79
deps/v8/test/cctest/test-cpu-profiler.cc
vendored
79
deps/v8/test/cctest/test-cpu-profiler.cc
vendored
@ -1738,6 +1738,85 @@ TEST(FunctionDetails) {
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script_a->GetUnboundScript()->GetId(), 5, 14);
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}
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TEST(FunctionDetailsInlining) {
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if (!CcTest::i_isolate()->use_optimizer() || i::FLAG_always_opt) return;
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i::FLAG_allow_natives_syntax = true;
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v8::HandleScope scope(CcTest::isolate());
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v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
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v8::Context::Scope context_scope(env);
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ProfilerHelper helper(env);
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// alpha is in a_script, beta in b_script. beta is
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// inlined in alpha, but it should be attributed to b_script.
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v8::Local<v8::Script> script_b = CompileWithOrigin(
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"function beta(k) {\n"
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" let sum = 2;\n"
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" for(let i = 0; i < k; i ++) {\n"
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" sum += i;\n"
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" sum = sum + 'a';\n"
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" }\n"
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" return sum;\n"
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"}\n"
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"\n",
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"script_b");
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v8::Local<v8::Script> script_a = CompileWithOrigin(
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"function alpha(p) {\n"
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" let res = beta(p);\n"
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" res = res + res;\n"
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" return res;\n"
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"}\n"
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"let p = 2;\n"
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"\n"
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"\n"
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"// Warm up before profiling or the inlining doesn't happen.\n"
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"p = alpha(p);\n"
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"p = alpha(p);\n"
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"%OptimizeFunctionOnNextCall(alpha);\n"
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"p = alpha(p);\n"
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"\n"
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"\n"
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"startProfiling();\n"
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"for(let i = 0; i < 10000; i++) {\n"
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" p = alpha(p);\n"
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"}\n"
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"stopProfiling();\n"
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"\n"
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"\n",
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"script_a");
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script_b->Run(env).ToLocalChecked();
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script_a->Run(env).ToLocalChecked();
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const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
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const v8::CpuProfileNode* current = profile->GetTopDownRoot();
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reinterpret_cast<ProfileNode*>(const_cast<v8::CpuProfileNode*>(current))
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->Print(0);
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// The tree should look like this:
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// 0 (root) 0 #1
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// 5 (program) 0 #6
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// 2 14 #2 script_a:1
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// ;;; deopted at script_id: 14 position: 299 with reason 'Insufficient
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// type feedback for call'.
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// 1 alpha 14 #4 script_a:1
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// 9 beta 13 #5 script_b:0
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// 0 startProfiling 0 #3
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const v8::CpuProfileNode* root = profile->GetTopDownRoot();
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const v8::CpuProfileNode* script = GetChild(env, root, "");
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CheckFunctionDetails(env->GetIsolate(), script, "", "script_a",
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script_a->GetUnboundScript()->GetId(), 1, 1);
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const v8::CpuProfileNode* alpha = FindChild(env, script, "alpha");
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// Return early if profiling didn't sample alpha.
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if (!alpha) return;
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CheckFunctionDetails(env->GetIsolate(), alpha, "alpha", "script_a",
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script_a->GetUnboundScript()->GetId(), 1, 15);
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const v8::CpuProfileNode* beta = FindChild(env, alpha, "beta");
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if (!beta) return;
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CheckFunctionDetails(env->GetIsolate(), beta, "beta", "script_b",
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script_b->GetUnboundScript()->GetId(), 0, 0);
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}
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TEST(DontStopOnFinishedProfileDelete) {
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v8::HandleScope scope(CcTest::isolate());
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