// Copyright 2009 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 "src/v8.h"
#include "test/cctest/cctest.h"
#include "src/base/platform/platform.h"
v8::base::Semaphore* semaphore = NULL;
void Signal(const v8::FunctionCallbackInfo<v8::Value>& args) {
semaphore->Signal();
}
void TerminateCurrentThread(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(!args.GetIsolate()->IsExecutionTerminating());
args.GetIsolate()->TerminateExecution();
}
void Fail(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(false);
}
void Loop(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(!args.GetIsolate()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(args.GetIsolate()->GetCurrentContext(),
"try { doloop(); fail(); } catch(e) { fail(); }");
CHECK(result.IsEmpty());
CHECK(args.GetIsolate()->IsExecutionTerminating());
}
void DoLoop(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
CHECK(!args.GetIsolate()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(args.GetIsolate()->GetCurrentContext(),
"function f() {"
" var term = true;"
" try {"
" while(true) {"
" if (term) terminate();"
" term = false;"
" }"
" fail();"
" } catch(e) {"
" fail();"
" }"
"}"
"f()");
CHECK(result.IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(args.GetIsolate()->IsExecutionTerminating());
}
void DoLoopNoCall(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
CHECK(!args.GetIsolate()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(args.GetIsolate()->GetCurrentContext(),
"var term = true;"
"while(true) {"
" if (term) terminate();"
" term = false;"
"}");
CHECK(result.IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(args.GetIsolate()->IsExecutionTerminating());
}
v8::Local<v8::ObjectTemplate> CreateGlobalTemplate(
v8::Isolate* isolate, v8::FunctionCallback terminate,
v8::FunctionCallback doloop) {
v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(v8_str("terminate"),
v8::FunctionTemplate::New(isolate, terminate));
global->Set(v8_str("fail"), v8::FunctionTemplate::New(isolate, Fail));
global->Set(v8_str("loop"), v8::FunctionTemplate::New(isolate, Loop));
global->Set(v8_str("doloop"), v8::FunctionTemplate::New(isolate, doloop));
return global;
}
// Test that a single thread of JavaScript execution can terminate
// itself.
TEST(TerminateOnlyV8ThreadFromThreadItself) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), TerminateCurrentThread, DoLoop);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
// Run a loop that will be infinite if thread termination does not work.
v8::MaybeLocal<v8::Value> result =
CompileRun(CcTest::isolate()->GetCurrentContext(),
"try { loop(); fail(); } catch(e) { fail(); }");
CHECK(result.IsEmpty());
// Test that we can run the code again after thread termination.
CHECK(!CcTest::isolate()->IsExecutionTerminating());
result = CompileRun(CcTest::isolate()->GetCurrentContext(),
"try { loop(); fail(); } catch(e) { fail(); }");
CHECK(result.IsEmpty());
}
// Test that a single thread of JavaScript execution can terminate
// itself in a loop that performs no calls.
TEST(TerminateOnlyV8ThreadFromThreadItselfNoLoop) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::ObjectTemplate> global = CreateGlobalTemplate(
CcTest::isolate(), TerminateCurrentThread, DoLoopNoCall);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
// Run a loop that will be infinite if thread termination does not work.
static const char* source = "try { loop(); fail(); } catch(e) { fail(); }";
v8::MaybeLocal<v8::Value> result =
CompileRun(CcTest::isolate()->GetCurrentContext(), source);
CHECK(result.IsEmpty());
CHECK(!CcTest::isolate()->IsExecutionTerminating());
// Test that we can run the code again after thread termination.
result = CompileRun(CcTest::isolate()->GetCurrentContext(), source);
CHECK(result.IsEmpty());
}
class TerminatorThread : public v8::base::Thread {
public:
explicit TerminatorThread(i::Isolate* isolate)
: Thread(Options("TerminatorThread")),
isolate_(reinterpret_cast<v8::Isolate*>(isolate)) {}
void Run() {
semaphore->Wait();
CHECK(!isolate_->IsExecutionTerminating());
isolate_->TerminateExecution();
}
private:
v8::Isolate* isolate_;
};
// Test that a single thread of JavaScript execution can be terminated
// from the side by another thread.
TEST(TerminateOnlyV8ThreadFromOtherThread) {
semaphore = new v8::base::Semaphore(0);
TerminatorThread thread(CcTest::i_isolate());
thread.Start();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), Signal, DoLoop);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
// Run a loop that will be infinite if thread termination does not work.
v8::MaybeLocal<v8::Value> result =
CompileRun(CcTest::isolate()->GetCurrentContext(),
"try { loop(); fail(); } catch(e) { fail(); }");
CHECK(result.IsEmpty());
thread.Join();
delete semaphore;
semaphore = NULL;
}
// Test that execution can be terminated from within JSON.stringify.
TEST(TerminateJsonStringify) {
semaphore = new v8::base::Semaphore(0);
TerminatorThread thread(CcTest::i_isolate());
thread.Start();
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), Signal, DoLoop);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(CcTest::isolate()->GetCurrentContext(),
"var x = [];"
"x[2**31]=1;"
"terminate();"
"JSON.stringify(x);"
"fail();");
CHECK(result.IsEmpty());
thread.Join();
delete semaphore;
semaphore = NULL;
}
int call_count = 0;
void TerminateOrReturnObject(const v8::FunctionCallbackInfo<v8::Value>& args) {
if (++call_count == 10) {
CHECK(!args.GetIsolate()->IsExecutionTerminating());
args.GetIsolate()->TerminateExecution();
return;
}
v8::Local<v8::Object> result = v8::Object::New(args.GetIsolate());
v8::Maybe<bool> val =
result->Set(args.GetIsolate()->GetCurrentContext(), v8_str("x"),
v8::Integer::New(args.GetIsolate(), 42));
CHECK(val.FromJust());
args.GetReturnValue().Set(result);
}
void LoopGetProperty(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
CHECK(!args.GetIsolate()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(args.GetIsolate()->GetCurrentContext(),
"function f() {"
" try {"
" while(true) {"
" terminate_or_return_object().x;"
" }"
" fail();"
" } catch(e) {"
" (function() {})();" // trigger stack check.
" fail();"
" }"
"}"
"f()");
CHECK(result.IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(args.GetIsolate()->IsExecutionTerminating());
}
// Test that we correctly handle termination exceptions if they are
// triggered by the creation of error objects in connection with ICs.
TEST(TerminateLoadICException) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(v8_str("terminate_or_return_object"),
v8::FunctionTemplate::New(isolate, TerminateOrReturnObject));
global->Set(v8_str("fail"), v8::FunctionTemplate::New(isolate, Fail));
global->Set(v8_str("loop"),
v8::FunctionTemplate::New(isolate, LoopGetProperty));
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!isolate->IsExecutionTerminating());
// Run a loop that will be infinite if thread termination does not work.
static const char* source = "try { loop(); fail(); } catch(e) { fail(); }";
call_count = 0;
v8::MaybeLocal<v8::Value> result =
CompileRun(isolate->GetCurrentContext(), source);
CHECK(result.IsEmpty());
// Test that we can run the code again after thread termination.
CHECK(!isolate->IsExecutionTerminating());
call_count = 0;
result = CompileRun(isolate->GetCurrentContext(), source);
CHECK(result.IsEmpty());
}
v8::Persistent<v8::String> reenter_script_1;
v8::Persistent<v8::String> reenter_script_2;
void ReenterAfterTermination(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
v8::Isolate* isolate = args.GetIsolate();
CHECK(!isolate->IsExecutionTerminating());
v8::Local<v8::String> script =
v8::Local<v8::String>::New(isolate, reenter_script_1);
v8::MaybeLocal<v8::Value> result = CompileRun(script);
CHECK(result.IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(isolate->IsExecutionTerminating());
script = v8::Local<v8::String>::New(isolate, reenter_script_2);
v8::MaybeLocal<v8::Script> compiled_script =
v8::Script::Compile(isolate->GetCurrentContext(), script);
CHECK(compiled_script.IsEmpty());
}
// Test that reentry into V8 while the termination exception is still pending
// (has not yet unwound the 0-level JS frame) does not crash.
TEST(TerminateAndReenterFromThreadItself) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global = CreateGlobalTemplate(
isolate, TerminateCurrentThread, ReenterAfterTermination);
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::Isolate::GetCurrent()->IsExecutionTerminating());
// Create script strings upfront as it won't work when terminating.
reenter_script_1.Reset(isolate, v8_str(
"function f() {"
" var term = true;"
" try {"
" while(true) {"
" if (term) terminate();"
" term = false;"
" }"
" fail();"
" } catch(e) {"
" fail();"
" }"
"}"
"f()"));
reenter_script_2.Reset(isolate, v8_str("function f() { fail(); } f()"));
CompileRun("try { loop(); fail(); } catch(e) { fail(); }");
CHECK(!isolate->IsExecutionTerminating());
// Check we can run JS again after termination.
CHECK(CompileRun("function f() { return true; } f()")->IsTrue());
reenter_script_1.Reset();
reenter_script_2.Reset();
}
void DoLoopCancelTerminate(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
CHECK(!v8::Isolate::GetCurrent()->IsExecutionTerminating());
v8::MaybeLocal<v8::Value> result =
CompileRun(args.GetIsolate()->GetCurrentContext(),
"var term = true;"
"while(true) {"
" if (term) terminate();"
" term = false;"
"}"
"fail();");
CHECK(result.IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::Isolate::GetCurrent()->IsExecutionTerminating());
CHECK(try_catch.HasTerminated());
CcTest::isolate()->CancelTerminateExecution();
CHECK(!v8::Isolate::GetCurrent()->IsExecutionTerminating());
}
// Test that a single thread of JavaScript execution can terminate
// itself and then resume execution.
TEST(TerminateCancelTerminateFromThreadItself) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global = CreateGlobalTemplate(
isolate, TerminateCurrentThread, DoLoopCancelTerminate);
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
// Check that execution completed with correct return value.
v8::Local<v8::Value> result =
CompileRun(isolate->GetCurrentContext(),
"try { doloop(); } catch(e) { fail(); } 'completed';")
.ToLocalChecked();
CHECK(result->Equals(isolate->GetCurrentContext(), v8_str("completed"))
.FromJust());
}
void MicrotaskShouldNotRun(const v8::FunctionCallbackInfo<v8::Value>& info) {
CHECK(false);
}
void MicrotaskLoopForever(const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::HandleScope scope(isolate);
// Enqueue another should-not-run task to ensure we clean out the queue
// when we terminate.
isolate->EnqueueMicrotask(
v8::Function::New(isolate->GetCurrentContext(), MicrotaskShouldNotRun)
.ToLocalChecked());
CompileRun("terminate(); while (true) { }");
CHECK(v8::Isolate::GetCurrent()->IsExecutionTerminating());
}
TEST(TerminateFromOtherThreadWhileMicrotaskRunning) {
semaphore = new v8::base::Semaphore(0);
TerminatorThread thread(CcTest::i_isolate());
thread.Start();
v8::Isolate* isolate = CcTest::isolate();
isolate->SetMicrotasksPolicy(v8::MicrotasksPolicy::kExplicit);
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), Signal, DoLoop);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
isolate->EnqueueMicrotask(
v8::Function::New(isolate->GetCurrentContext(), MicrotaskLoopForever)
.ToLocalChecked());
// The second task should never be run because we bail out if we're
// terminating.
isolate->EnqueueMicrotask(
v8::Function::New(isolate->GetCurrentContext(), MicrotaskShouldNotRun)
.ToLocalChecked());
isolate->RunMicrotasks();
isolate->CancelTerminateExecution();
isolate->RunMicrotasks(); // should not run MicrotaskShouldNotRun
thread.Join();
delete semaphore;
semaphore = NULL;
}
static int callback_counter = 0;
static void CounterCallback(v8::Isolate* isolate, void* data) {
callback_counter++;
}
TEST(PostponeTerminateException) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), TerminateCurrentThread, DoLoop);
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
v8::TryCatch try_catch(isolate);
static const char* terminate_and_loop =
"terminate(); for (var i = 0; i < 10000; i++);";
{ // Postpone terminate execution interrupts.
i::PostponeInterruptsScope p1(CcTest::i_isolate(),
i::StackGuard::TERMINATE_EXECUTION);
// API interrupts should still be triggered.
CcTest::isolate()->RequestInterrupt(&CounterCallback, NULL);
CHECK_EQ(0, callback_counter);
CompileRun(terminate_and_loop);
CHECK(!try_catch.HasTerminated());
CHECK_EQ(1, callback_counter);
{ // Postpone API interrupts as well.
i::PostponeInterruptsScope p2(CcTest::i_isolate(),
i::StackGuard::API_INTERRUPT);
// None of the two interrupts should trigger.
CcTest::isolate()->RequestInterrupt(&CounterCallback, NULL);
CompileRun(terminate_and_loop);
CHECK(!try_catch.HasTerminated());
CHECK_EQ(1, callback_counter);
}
// Now the previously requested API interrupt should trigger.
CompileRun(terminate_and_loop);
CHECK(!try_catch.HasTerminated());
CHECK_EQ(2, callback_counter);
}
// Now the previously requested terminate execution interrupt should trigger.
CompileRun("for (var i = 0; i < 10000; i++);");
CHECK(try_catch.HasTerminated());
CHECK_EQ(2, callback_counter);
}
TEST(ErrorObjectAfterTermination) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = v8::Context::New(CcTest::isolate());
v8::Context::Scope context_scope(context);
isolate->TerminateExecution();
v8::Local<v8::Value> error = v8::Exception::Error(v8_str("error"));
// TODO(yangguo): crbug/403509. Check for empty handle instead.
CHECK(error->IsUndefined());
}
void InnerTryCallTerminate(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(!args.GetIsolate()->IsExecutionTerminating());
v8::Local<v8::Object> global = CcTest::global();
v8::Local<v8::Function> loop = v8::Local<v8::Function>::Cast(
global->Get(CcTest::isolate()->GetCurrentContext(), v8_str("loop"))
.ToLocalChecked());
i::MaybeHandle<i::Object> result =
i::Execution::TryCall(CcTest::i_isolate(), v8::Utils::OpenHandle((*loop)),
v8::Utils::OpenHandle((*global)), 0, NULL, NULL);
CHECK(result.is_null());
// TryCall ignores terminate execution, but rerequests the interrupt.
CHECK(!args.GetIsolate()->IsExecutionTerminating());
CHECK(CompileRun("1 + 1;").IsEmpty());
}
TEST(TerminationInInnerTryCall) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global_template = CreateGlobalTemplate(
CcTest::isolate(), TerminateCurrentThread, DoLoopNoCall);
global_template->Set(
v8_str("inner_try_call_terminate"),
v8::FunctionTemplate::New(isolate, InnerTryCallTerminate));
v8::Local<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global_template);
v8::Context::Scope context_scope(context);
{
v8::TryCatch try_catch(isolate);
CompileRun("inner_try_call_terminate()");
CHECK(try_catch.HasTerminated());
}
v8::Maybe<int32_t> result = CompileRun("2 + 2")->Int32Value(
v8::Isolate::GetCurrent()->GetCurrentContext());
CHECK_EQ(4, result.FromJust());
CHECK(!v8::Isolate::GetCurrent()->IsExecutionTerminating());
}
TEST(TerminateAndTryCall) {
i::FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global = CreateGlobalTemplate(
isolate, TerminateCurrentThread, DoLoopCancelTerminate);
v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!isolate->IsExecutionTerminating());
v8::TryCatch try_catch(isolate);
CHECK(!isolate->IsExecutionTerminating());
// Terminate execution has been triggered inside TryCall, but re-requested
// to trigger later.
CHECK(CompileRun("terminate(); reference_error();").IsEmpty());
CHECK(try_catch.HasCaught());
CHECK(!isolate->IsExecutionTerminating());
v8::Local<v8::Value> value =
CcTest::global()
->Get(isolate->GetCurrentContext(), v8_str("terminate"))
.ToLocalChecked();
CHECK(value->IsFunction());
// The first stack check after terminate has been re-requested fails.
CHECK(CompileRun("1 + 1").IsEmpty());
CHECK(!isolate->IsExecutionTerminating());
// V8 then recovers.
v8::Maybe<int32_t> result = CompileRun("2 + 2")->Int32Value(
v8::Isolate::GetCurrent()->GetCurrentContext());
CHECK_EQ(4, result.FromJust());
CHECK(!isolate->IsExecutionTerminating());
}