// Copyright 2012 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. #include <stdlib.h> #include <wchar.h> #include <memory> #include "include/v8-profiler.h" #include "include/v8.h" #include "src/api/api-inl.h" #include "src/codegen/compilation-cache.h" #include "src/codegen/compiler.h" #include "src/codegen/script-details.h" #include "src/diagnostics/disasm.h" #include "src/heap/factory.h" #include "src/heap/spaces.h" #include "src/init/v8.h" #include "src/interpreter/interpreter.h" #include "src/objects/allocation-site-inl.h" #include "src/objects/objects-inl.h" #include "src/objects/shared-function-info.h" #include "test/cctest/cctest.h" namespace v8 { namespace internal { static Handle<Object> GetGlobalProperty(const char* name) { Isolate* isolate = CcTest::i_isolate(); return JSReceiver::GetProperty(isolate, isolate->global_object(), name) .ToHandleChecked(); } static void SetGlobalProperty(const char* name, Object value) { Isolate* isolate = CcTest::i_isolate(); Handle<Object> object(value, isolate); Handle<String> internalized_name = isolate->factory()->InternalizeUtf8String(name); Handle<JSObject> global(isolate->context().global_object(), isolate); Runtime::SetObjectProperty(isolate, global, internalized_name, object, StoreOrigin::kMaybeKeyed, Just(kDontThrow)) .Check(); } static Handle<JSFunction> Compile(const char* source) { Isolate* isolate = CcTest::i_isolate(); Handle<String> source_code = isolate->factory() ->NewStringFromUtf8(base::CStrVector(source)) .ToHandleChecked(); Handle<SharedFunctionInfo> shared = Compiler::GetSharedFunctionInfoForScript( isolate, source_code, ScriptDetails(), nullptr, nullptr, v8::ScriptCompiler::kNoCompileOptions, ScriptCompiler::kNoCacheNoReason, NOT_NATIVES_CODE) .ToHandleChecked(); return Factory::JSFunctionBuilder{isolate, shared, isolate->native_context()} .Build(); } static double Inc(Isolate* isolate, int x) { const char* source = "result = %d + 1;"; base::EmbeddedVector<char, 512> buffer; SNPrintF(buffer, source, x); Handle<JSFunction> fun = Compile(buffer.begin()); if (fun.is_null()) return -1; Handle<JSObject> global(isolate->context().global_object(), isolate); Execution::Call(isolate, fun, global, 0, nullptr).Check(); return GetGlobalProperty("result")->Number(); } TEST(Inc) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); CHECK_EQ(4.0, Inc(CcTest::i_isolate(), 3)); } static double Add(Isolate* isolate, int x, int y) { Handle<JSFunction> fun = Compile("result = x + y;"); if (fun.is_null()) return -1; SetGlobalProperty("x", Smi::FromInt(x)); SetGlobalProperty("y", Smi::FromInt(y)); Handle<JSObject> global(isolate->context().global_object(), isolate); Execution::Call(isolate, fun, global, 0, nullptr).Check(); return GetGlobalProperty("result")->Number(); } TEST(Add) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); CHECK_EQ(5.0, Add(CcTest::i_isolate(), 2, 3)); } static double Abs(Isolate* isolate, int x) { Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;"); if (fun.is_null()) return -1; SetGlobalProperty("x", Smi::FromInt(x)); Handle<JSObject> global(isolate->context().global_object(), isolate); Execution::Call(isolate, fun, global, 0, nullptr).Check(); return GetGlobalProperty("result")->Number(); } TEST(Abs) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); CHECK_EQ(3.0, Abs(CcTest::i_isolate(), -3)); } static double Sum(Isolate* isolate, int n) { Handle<JSFunction> fun = Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;"); if (fun.is_null()) return -1; SetGlobalProperty("n", Smi::FromInt(n)); Handle<JSObject> global(isolate->context().global_object(), isolate); Execution::Call(isolate, fun, global, 0, nullptr).Check(); return GetGlobalProperty("result")->Number(); } TEST(Sum) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); CHECK_EQ(5050.0, Sum(CcTest::i_isolate(), 100)); } TEST(Print) { v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::Context> context = CcTest::NewContext({PRINT_EXTENSION_ID}); v8::Context::Scope context_scope(context); const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);"; Handle<JSFunction> fun = Compile(source); if (fun.is_null()) return; Handle<JSObject> global(CcTest::i_isolate()->context().global_object(), fun->GetIsolate()); Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check(); } // The following test method stems from my coding efforts today. It // tests all the functionality I have added to the compiler today TEST(Stuff) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); const char* source = "r = 0;\n" "a = new Object;\n" "if (a == a) r+=1;\n" // 1 "if (a != new Object()) r+=2;\n" // 2 "a.x = 42;\n" "if (a.x == 42) r+=4;\n" // 4 "function foo() { var x = 87; return x; }\n" "if (foo() == 87) r+=8;\n" // 8 "function bar() { var x; x = 99; return x; }\n" "if (bar() == 99) r+=16;\n" // 16 "function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n" "if (baz() == 6) r+=32;\n" // 32 "function Cons0() { this.x = 42; this.y = 87; }\n" "if (new Cons0().x == 42) r+=64;\n" // 64 "if (new Cons0().y == 87) r+=128;\n" // 128 "function Cons2(x, y) { this.sum = x + y; }\n" "if (new Cons2(3,4).sum == 7) r+=256;"; // 256 Handle<JSFunction> fun = Compile(source); CHECK(!fun.is_null()); Handle<JSObject> global(CcTest::i_isolate()->context().global_object(), fun->GetIsolate()); Execution::Call(CcTest::i_isolate(), fun, global, 0, nullptr).Check(); CHECK_EQ(511.0, GetGlobalProperty("r")->Number()); } TEST(UncaughtThrow) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); const char* source = "throw 42;"; Handle<JSFunction> fun = Compile(source); CHECK(!fun.is_null()); Isolate* isolate = fun->GetIsolate(); Handle<JSObject> global(isolate->context().global_object(), isolate); CHECK(Execution::Call(isolate, fun, global, 0, nullptr).is_null()); CHECK_EQ(42.0, isolate->pending_exception().Number()); } // Tests calling a builtin function from C/C++ code, and the builtin function // performs GC. It creates a stack frame looks like following: // | C (PerformGC) | // | JS-to-C | // | JS | // | C-to-JS | TEST(C2JSFrames) { FLAG_expose_gc = true; v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::Context> context = CcTest::NewContext({PRINT_EXTENSION_ID, GC_EXTENSION_ID}); v8::Context::Scope context_scope(context); const char* source = "function foo(a) { gc(), print(a); }"; Handle<JSFunction> fun0 = Compile(source); CHECK(!fun0.is_null()); Isolate* isolate = fun0->GetIsolate(); // Run the generated code to populate the global object with 'foo'. Handle<JSObject> global(isolate->context().global_object(), isolate); Execution::Call(isolate, fun0, global, 0, nullptr).Check(); Handle<Object> fun1 = JSReceiver::GetProperty(isolate, isolate->global_object(), "foo") .ToHandleChecked(); CHECK(fun1->IsJSFunction()); Handle<Object> argv[] = { isolate->factory()->InternalizeString(base::StaticCharVector("hello"))}; Execution::Call(isolate, Handle<JSFunction>::cast(fun1), global, arraysize(argv), argv).Check(); } // Regression 236. Calling InitLineEnds on a Script with undefined // source resulted in crash. TEST(Regression236) { CcTest::InitializeVM(); Isolate* isolate = CcTest::i_isolate(); Factory* factory = isolate->factory(); v8::HandleScope scope(CcTest::isolate()); Handle<Script> script = factory->NewScript(factory->empty_string()); script->set_source(ReadOnlyRoots(CcTest::heap()).undefined_value()); CHECK_EQ(-1, Script::GetLineNumber(script, 0)); CHECK_EQ(-1, Script::GetLineNumber(script, 100)); CHECK_EQ(-1, Script::GetLineNumber(script, -1)); } TEST(GetScriptLineNumber) { LocalContext context; v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); v8::ScriptOrigin origin = v8::ScriptOrigin(isolate, v8_str("test")); const char function_f[] = "function f() {}"; const int max_rows = 1000; const int buffer_size = max_rows + sizeof(function_f); base::ScopedVector<char> buffer(buffer_size); memset(buffer.begin(), '\n', buffer_size - 1); buffer[buffer_size - 1] = '\0'; for (int i = 0; i < max_rows; ++i) { if (i > 0) buffer[i - 1] = '\n'; MemCopy(&buffer[i], function_f, sizeof(function_f) - 1); v8::Local<v8::String> script_body = v8_str(buffer.begin()); v8::Script::Compile(context.local(), script_body, &origin) .ToLocalChecked() ->Run(context.local()) .ToLocalChecked(); v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast( context->Global()->Get(context.local(), v8_str("f")).ToLocalChecked()); CHECK_EQ(i, f->GetScriptLineNumber()); } } TEST(FeedbackVectorPreservedAcrossRecompiles) { if (i::FLAG_always_opt || !i::FLAG_opt) return; i::FLAG_allow_natives_syntax = true; CcTest::InitializeVM(); if (!CcTest::i_isolate()->use_optimizer()) return; v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext(); // Make sure function f has a call that uses a type feedback slot. CompileRun( "function fun() {};" "fun1 = fun;" "%PrepareFunctionForOptimization(f);" "function f(a) { a(); } f(fun1);"); Handle<JSFunction> f = Handle<JSFunction>::cast( v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast( CcTest::global()->Get(context, v8_str("f")).ToLocalChecked()))); // Verify that we gathered feedback. Handle<FeedbackVector> feedback_vector(f->feedback_vector(), f->GetIsolate()); CHECK(!feedback_vector->is_empty()); FeedbackSlot slot_for_a(0); MaybeObject object = feedback_vector->Get(slot_for_a); { HeapObject heap_object; CHECK(object->GetHeapObjectIfWeak(&heap_object)); CHECK(heap_object.IsJSFunction()); } CompileRun("%OptimizeFunctionOnNextCall(f); f(fun1);"); // Verify that the feedback is still "gathered" despite a recompilation // of the full code. CHECK(f->HasAttachedOptimizedCode()); object = f->feedback_vector().Get(slot_for_a); { HeapObject heap_object; CHECK(object->GetHeapObjectIfWeak(&heap_object)); CHECK(heap_object.IsJSFunction()); } } TEST(FeedbackVectorUnaffectedByScopeChanges) { if (i::FLAG_always_opt || !i::FLAG_lazy || i::FLAG_lite_mode) { return; } CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext(); CompileRun("function builder() {" " call_target = function() { return 3; };" " return (function() {" " eval('');" " return function() {" " 'use strict';" " call_target();" " }" " })();" "}" "morphing_call = builder();"); Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle( *v8::Local<v8::Function>::Cast(CcTest::global() ->Get(context, v8_str("morphing_call")) .ToLocalChecked()))); // If we are compiling lazily then it should not be compiled, and so no // feedback vector allocated yet. CHECK(!f->shared().is_compiled()); CompileRun("morphing_call();"); // Now a feedback vector / closure feedback cell array is allocated. CHECK(f->shared().is_compiled()); CHECK(f->has_feedback_vector() || f->has_closure_feedback_cell_array()); } // Test that optimized code for different closures is actually shared. TEST(OptimizedCodeSharing1) { FLAG_stress_compaction = false; FLAG_allow_natives_syntax = true; CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); for (int i = 0; i < 3; i++) { LocalContext env; env->Global() ->Set(env.local(), v8_str("x"), v8::Integer::New(CcTest::isolate(), i)) .FromJust(); CompileRun( "function MakeClosure() {" " return function() { return x; };" "}" "var closure0 = MakeClosure();" "var closure1 = MakeClosure();" // We only share optimized code // if there are at least two closures. "%PrepareFunctionForOptimization(closure0);" "%DebugPrint(closure0());" "%OptimizeFunctionOnNextCall(closure0);" "%DebugPrint(closure0());" "closure1();" "var closure2 = MakeClosure(); closure2();"); Handle<JSFunction> fun1 = Handle<JSFunction>::cast( v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast( env->Global() ->Get(env.local(), v8_str("closure1")) .ToLocalChecked()))); Handle<JSFunction> fun2 = Handle<JSFunction>::cast( v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast( env->Global() ->Get(env.local(), v8_str("closure2")) .ToLocalChecked()))); CHECK(fun1->HasAttachedOptimizedCode() || !CcTest::i_isolate()->use_optimizer()); CHECK(fun2->HasAttachedOptimizedCode() || !CcTest::i_isolate()->use_optimizer()); CHECK_EQ(fun1->code(), fun2->code()); } } TEST(CompileFunctionInContext) { if (i::FLAG_always_opt) return; CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; CompileRun("var r = 10;"); v8::Local<v8::Object> math = v8::Local<v8::Object>::Cast( env->Global()->Get(env.local(), v8_str("Math")).ToLocalChecked()); v8::ScriptCompiler::Source script_source(v8_str( "a = PI * r * r;" "x = r * cos(PI);" "y = r * sin(PI / 2);")); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source, 0, nullptr, 1, &math) .ToLocalChecked(); CHECK(!fun.IsEmpty()); i::DisallowCompilation no_compile(CcTest::i_isolate()); fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked(); CHECK(env->Global()->Has(env.local(), v8_str("a")).FromJust()); v8::Local<v8::Value> a = env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked(); CHECK(a->IsNumber()); CHECK(env->Global()->Has(env.local(), v8_str("x")).FromJust()); v8::Local<v8::Value> x = env->Global()->Get(env.local(), v8_str("x")).ToLocalChecked(); CHECK(x->IsNumber()); CHECK(env->Global()->Has(env.local(), v8_str("y")).FromJust()); v8::Local<v8::Value> y = env->Global()->Get(env.local(), v8_str("y")).ToLocalChecked(); CHECK(y->IsNumber()); CHECK_EQ(314.1592653589793, a->NumberValue(env.local()).FromJust()); CHECK_EQ(-10.0, x->NumberValue(env.local()).FromJust()); CHECK_EQ(10.0, y->NumberValue(env.local()).FromJust()); } TEST(CompileFunctionInContextComplex) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; CompileRun( "var x = 1;" "var y = 2;" "var z = 4;" "var a = {x: 8, y: 16};" "var b = {x: 32};"); v8::Local<v8::Object> ext[2]; ext[0] = v8::Local<v8::Object>::Cast( env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked()); ext[1] = v8::Local<v8::Object>::Cast( env->Global()->Get(env.local(), v8_str("b")).ToLocalChecked()); v8::ScriptCompiler::Source script_source(v8_str("result = x + y + z")); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source, 0, nullptr, 2, ext) .ToLocalChecked(); CHECK(!fun.IsEmpty()); fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked(); CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust()); v8::Local<v8::Value> result = env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked(); CHECK(result->IsNumber()); CHECK_EQ(52.0, result->NumberValue(env.local()).FromJust()); } TEST(CompileFunctionInContextArgs) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; CompileRun("var a = {x: 23};"); v8::Local<v8::Object> ext[1]; ext[0] = v8::Local<v8::Object>::Cast( env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked()); v8::ScriptCompiler::Source script_source(v8_str("result = x + abc")); v8::Local<v8::String> arg = v8_str("abc"); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source, 1, &arg, 1, ext) .ToLocalChecked(); CHECK_EQ(1, fun->Get(env.local(), v8_str("length")) .ToLocalChecked() ->ToInt32(env.local()) .ToLocalChecked() ->Value()); v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0); fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked(); CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust()); v8::Local<v8::Value> result = env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked(); CHECK(result->IsNumber()); CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust()); } TEST(CompileFunctionInContextComments) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; CompileRun("var a = {x: 23, y: 1, z: 2};"); v8::Local<v8::Object> ext[1]; ext[0] = v8::Local<v8::Object>::Cast( env->Global()->Get(env.local(), v8_str("a")).ToLocalChecked()); v8::Local<v8::String> source = CompileRun("'result = /* y + */ x + a\\u4e00 // + z'").As<v8::String>(); v8::ScriptCompiler::Source script_source(source); v8::Local<v8::String> arg = CompileRun("'a\\u4e00'").As<v8::String>(); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext(env.local(), &script_source, 1, &arg, 1, ext) .ToLocalChecked(); CHECK(!fun.IsEmpty()); v8::Local<v8::Value> arg_value = v8::Number::New(CcTest::isolate(), 42.0); fun->Call(env.local(), env->Global(), 1, &arg_value).ToLocalChecked(); CHECK(env->Global()->Has(env.local(), v8_str("result")).FromJust()); v8::Local<v8::Value> result = env->Global()->Get(env.local(), v8_str("result")).ToLocalChecked(); CHECK(result->IsNumber()); CHECK_EQ(65.0, result->NumberValue(env.local()).FromJust()); } TEST(CompileFunctionInContextNonIdentifierArgs) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; v8::ScriptCompiler::Source script_source(v8_str("result = 1")); v8::Local<v8::String> arg = v8_str("b }"); CHECK(v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 1, &arg, 0, nullptr) .IsEmpty()); } TEST(CompileFunctionInContextRenderCallSite) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; static const char* source1 = "try {" " var a = [];" " a[0]();" "} catch (e) {" " return e.toString();" "}"; static const char* expect1 = "TypeError: a[0] is not a function"; static const char* source2 = "try {" " (function() {" " var a = [];" " a[0]();" " })()" "} catch (e) {" " return e.toString();" "}"; static const char* expect2 = "TypeError: a[0] is not a function"; { v8::ScriptCompiler::Source script_source(v8_str(source1)); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr) .ToLocalChecked(); CHECK(!fun.IsEmpty()); v8::Local<v8::Value> result = fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked(); CHECK(result->IsString()); CHECK(v8::Local<v8::String>::Cast(result) ->Equals(env.local(), v8_str(expect1)) .FromJust()); } { v8::ScriptCompiler::Source script_source(v8_str(source2)); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr) .ToLocalChecked(); v8::Local<v8::Value> result = fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked(); CHECK(result->IsString()); CHECK(v8::Local<v8::String>::Cast(result) ->Equals(env.local(), v8_str(expect2)) .FromJust()); } } TEST(CompileFunctionInContextQuirks) { CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); LocalContext env; { static const char* source = "[x, y] = ['ab', 'cd'];" "return x + y"; static const char* expect = "abcd"; v8::ScriptCompiler::Source script_source(v8_str(source)); v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr) .ToLocalChecked(); v8::Local<v8::Value> result = fun->Call(env.local(), env->Global(), 0, nullptr).ToLocalChecked(); CHECK(result->IsString()); CHECK(v8::Local<v8::String>::Cast(result) ->Equals(env.local(), v8_str(expect)) .FromJust()); } { static const char* source = "'use strict'; var a = 077"; v8::ScriptCompiler::Source script_source(v8_str(source)); v8::TryCatch try_catch(CcTest::isolate()); CHECK(v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr) .IsEmpty()); CHECK(try_catch.HasCaught()); } { static const char* source = "{ let x; { var x } }"; v8::ScriptCompiler::Source script_source(v8_str(source)); v8::TryCatch try_catch(CcTest::isolate()); CHECK(v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr) .IsEmpty()); CHECK(try_catch.HasCaught()); } } TEST(CompileFunctionInContextScriptOrigin) { CcTest::InitializeVM(); v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); LocalContext env; v8::ScriptOrigin origin(isolate, v8_str("test"), 22, 41); v8::ScriptCompiler::Source script_source(v8_str("throw new Error()"), origin); Local<ScriptOrModule> script; v8::Local<v8::Function> fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr, v8::ScriptCompiler::CompileOptions::kNoCompileOptions, v8::ScriptCompiler::NoCacheReason::kNoCacheNoReason, &script) .ToLocalChecked(); CHECK(!fun.IsEmpty()); CHECK(!script.IsEmpty()); CHECK(script->GetResourceName()->StrictEquals(v8_str("test"))); v8::TryCatch try_catch(CcTest::isolate()); CcTest::isolate()->SetCaptureStackTraceForUncaughtExceptions(true); CHECK(fun->Call(env.local(), env->Global(), 0, nullptr).IsEmpty()); CHECK(try_catch.HasCaught()); CHECK(!try_catch.Exception().IsEmpty()); v8::Local<v8::StackTrace> stack = v8::Exception::GetStackTrace(try_catch.Exception()); CHECK(!stack.IsEmpty()); CHECK_GT(stack->GetFrameCount(), 0); v8::Local<v8::StackFrame> frame = stack->GetFrame(CcTest::isolate(), 0); CHECK_EQ(23, frame->GetLineNumber()); CHECK_EQ(42 + strlen("throw "), static_cast<unsigned>(frame->GetColumn())); } void TestCompileFunctionInContextToStringImpl() { #define CHECK_NOT_CAUGHT(__local_context__, try_catch, __op__) \ do { \ const char* op = (__op__); \ v8::Local<v8::Context> context = (__local_context__); \ if (try_catch.HasCaught()) { \ v8::String::Utf8Value error( \ CcTest::isolate(), \ try_catch.Exception()->ToString(context).ToLocalChecked()); \ FATAL("Unexpected exception thrown during %s:\n\t%s\n", op, *error); \ } \ } while (false) { CcTest::InitializeVM(); v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); LocalContext env; // Regression test for v8:6190 { v8::ScriptOrigin origin(isolate, v8_str("test"), 22, 41); v8::ScriptCompiler::Source script_source(v8_str("return event"), origin); v8::Local<v8::String> params[] = {v8_str("event")}; v8::TryCatch try_catch(CcTest::isolate()); v8::MaybeLocal<v8::Function> maybe_fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, arraysize(params), params, 0, nullptr); CHECK_NOT_CAUGHT(env.local(), try_catch, "v8::ScriptCompiler::CompileFunctionInContext"); v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked(); CHECK(!fun.IsEmpty()); CHECK(!try_catch.HasCaught()); v8::Local<v8::String> result = fun->ToString(env.local()).ToLocalChecked(); v8::Local<v8::String> expected = v8_str( "function (event) {\n" "return event\n" "}"); CHECK(expected->Equals(env.local(), result).FromJust()); } // With no parameters: { v8::ScriptOrigin origin(isolate, v8_str("test"), 17, 31); v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin); v8::TryCatch try_catch(CcTest::isolate()); v8::MaybeLocal<v8::Function> maybe_fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr); CHECK_NOT_CAUGHT(env.local(), try_catch, "v8::ScriptCompiler::CompileFunctionInContext"); v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked(); CHECK(!fun.IsEmpty()); CHECK(!try_catch.HasCaught()); v8::Local<v8::String> result = fun->ToString(env.local()).ToLocalChecked(); v8::Local<v8::String> expected = v8_str( "function () {\n" "return 0\n" "}"); CHECK(expected->Equals(env.local(), result).FromJust()); } // With a name: { v8::ScriptOrigin origin(isolate, v8_str("test"), 17, 31); v8::ScriptCompiler::Source script_source(v8_str("return 0"), origin); v8::TryCatch try_catch(CcTest::isolate()); v8::MaybeLocal<v8::Function> maybe_fun = v8::ScriptCompiler::CompileFunctionInContext( env.local(), &script_source, 0, nullptr, 0, nullptr); CHECK_NOT_CAUGHT(env.local(), try_catch, "v8::ScriptCompiler::CompileFunctionInContext"); v8::Local<v8::Function> fun = maybe_fun.ToLocalChecked(); CHECK(!fun.IsEmpty()); CHECK(!try_catch.HasCaught()); fun->SetName(v8_str("onclick")); v8::Local<v8::String> result = fun->ToString(env.local()).ToLocalChecked(); v8::Local<v8::String> expected = v8_str( "function onclick() {\n" "return 0\n" "}"); CHECK(expected->Equals(env.local(), result).FromJust()); } } #undef CHECK_NOT_CAUGHT } TEST(CompileFunctionInContextFunctionToString) { TestCompileFunctionInContextToStringImpl(); } TEST(InvocationCount) { if (FLAG_lite_mode) return; FLAG_allow_natives_syntax = true; FLAG_always_opt = false; CcTest::InitializeVM(); v8::HandleScope scope(CcTest::isolate()); CompileRun( "function bar() {};" "%EnsureFeedbackVectorForFunction(bar);" "function foo() { return bar(); };" "%EnsureFeedbackVectorForFunction(foo);" "foo();"); Handle<JSFunction> foo = Handle<JSFunction>::cast(GetGlobalProperty("foo")); CHECK_EQ(1, foo->feedback_vector().invocation_count()); CompileRun("foo()"); CHECK_EQ(2, foo->feedback_vector().invocation_count()); CompileRun("bar()"); CHECK_EQ(2, foo->feedback_vector().invocation_count()); CompileRun("foo(); foo()"); CHECK_EQ(4, foo->feedback_vector().invocation_count()); } TEST(ShallowEagerCompilation) { i::FLAG_always_opt = false; CcTest::InitializeVM(); LocalContext env; i::Isolate* isolate = CcTest::i_isolate(); v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::String> source = v8_str( "function f(x) {" " return x + x;" "}" "f(2)"); v8::ScriptCompiler::Source script_source(source); v8::Local<v8::Script> script = v8::ScriptCompiler::Compile(env.local(), &script_source, v8::ScriptCompiler::kEagerCompile) .ToLocalChecked(); { v8::internal::DisallowCompilation no_compile_expected(isolate); v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked(); CHECK_EQ(4, result->Int32Value(env.local()).FromJust()); } } TEST(DeepEagerCompilation) { i::FLAG_always_opt = false; CcTest::InitializeVM(); LocalContext env; i::Isolate* isolate = CcTest::i_isolate(); v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::String> source = v8_str( "function f(x) {" " function g(x) {" " function h(x) {" " return x ** x;" " }" " return h(x) * h(x);" " }" " return g(x) + g(x);" "}" "f(2)"); v8::ScriptCompiler::Source script_source(source); v8::Local<v8::Script> script = v8::ScriptCompiler::Compile(env.local(), &script_source, v8::ScriptCompiler::kEagerCompile) .ToLocalChecked(); { v8::internal::DisallowCompilation no_compile_expected(isolate); v8::Local<v8::Value> result = script->Run(env.local()).ToLocalChecked(); CHECK_EQ(32, result->Int32Value(env.local()).FromJust()); } } TEST(DeepEagerCompilationPeakMemory) { i::FLAG_always_opt = false; CcTest::InitializeVM(); LocalContext env; v8::HandleScope scope(CcTest::isolate()); v8::Local<v8::String> source = v8_str( "function f() {" " function g1() {" " function h1() {" " function i1() {}" " function i2() {}" " }" " function h2() {" " function i1() {}" " function i2() {}" " }" " }" " function g2() {" " function h1() {" " function i1() {}" " function i2() {}" " }" " function h2() {" " function i1() {}" " function i2() {}" " }" " }" "}"); v8::ScriptCompiler::Source script_source(source); CcTest::i_isolate()->compilation_cache()->DisableScriptAndEval(); v8::HeapStatistics heap_statistics; CcTest::isolate()->GetHeapStatistics(&heap_statistics); size_t peak_mem_1 = heap_statistics.peak_malloced_memory(); printf("peak memory after init: %8zu\n", peak_mem_1); v8::ScriptCompiler::Compile(env.local(), &script_source, v8::ScriptCompiler::kNoCompileOptions) .ToLocalChecked(); CcTest::isolate()->GetHeapStatistics(&heap_statistics); size_t peak_mem_2 = heap_statistics.peak_malloced_memory(); printf("peak memory after lazy compile: %8zu\n", peak_mem_2); v8::ScriptCompiler::Compile(env.local(), &script_source, v8::ScriptCompiler::kNoCompileOptions) .ToLocalChecked(); CcTest::isolate()->GetHeapStatistics(&heap_statistics); size_t peak_mem_3 = heap_statistics.peak_malloced_memory(); printf("peak memory after lazy compile: %8zu\n", peak_mem_3); v8::ScriptCompiler::Compile(env.local(), &script_source, v8::ScriptCompiler::kEagerCompile) .ToLocalChecked(); CcTest::isolate()->GetHeapStatistics(&heap_statistics); size_t peak_mem_4 = heap_statistics.peak_malloced_memory(); printf("peak memory after eager compile: %8zu\n", peak_mem_4); CHECK_LE(peak_mem_1, peak_mem_2); CHECK_EQ(peak_mem_2, peak_mem_3); CHECK_LE(peak_mem_3, peak_mem_4); // Check that eager compilation does not cause significantly higher (+100%) // peak memory than lazy compilation. CHECK_LE(peak_mem_4 - peak_mem_3, peak_mem_3); } namespace { // Dummy external source stream which returns the whole source in one go. class DummySourceStream : public v8::ScriptCompiler::ExternalSourceStream { public: explicit DummySourceStream(const char* source) : done_(false) { source_length_ = static_cast<int>(strlen(source)); source_buffer_ = source; } size_t GetMoreData(const uint8_t** dest) override { if (done_) { return 0; } uint8_t* buf = new uint8_t[source_length_ + 1]; memcpy(buf, source_buffer_, source_length_ + 1); *dest = buf; done_ = true; return source_length_; } private: int source_length_; const char* source_buffer_; bool done_; }; } // namespace // Tests that doing something that causes source positions to need to be // collected after a background compilation task has started does result in // source positions being collected. TEST(ProfilerEnabledDuringBackgroundCompile) { CcTest::InitializeVM(); v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); const char* source = "var a = 0;"; v8::ScriptCompiler::StreamedSource streamed_source( std::make_unique<DummySourceStream>(source), v8::ScriptCompiler::StreamedSource::UTF8); std::unique_ptr<v8::ScriptCompiler::ScriptStreamingTask> task( v8::ScriptCompiler::StartStreaming(isolate, &streamed_source)); // Run the background compilation task on the main thread. task->Run(); // Enable the CPU profiler. auto* cpu_profiler = v8::CpuProfiler::New(isolate, v8::kStandardNaming); v8::Local<v8::String> profile = v8_str("profile"); cpu_profiler->StartProfiling(profile); // Finalize the background compilation task ensuring it completed // successfully. v8::Local<v8::Script> script = v8::ScriptCompiler::Compile(isolate->GetCurrentContext(), &streamed_source, v8_str(source), v8::ScriptOrigin(isolate, v8_str("foo"))) .ToLocalChecked(); i::Handle<i::Object> obj = Utils::OpenHandle(*script); CHECK(i::JSFunction::cast(*obj).shared().AreSourcePositionsAvailable( CcTest::i_isolate())); cpu_profiler->StopProfiling(profile); } } // namespace internal } // namespace v8