// 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 "src/platform.h"
#include "test/cctest/cctest.h"
v8::internal::Semaphore* semaphore = NULL;
void Signal(const v8::FunctionCallbackInfo<v8::Value>& args) {
semaphore->Signal();
}
void TerminateCurrentThread(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::V8::TerminateExecution(args.GetIsolate());
}
void Fail(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(false);
}
void Loop(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
args.GetIsolate(), "try { doloop(); fail(); } catch(e) { fail(); }");
v8::Handle<v8::Value> result = v8::Script::Compile(source)->Run();
CHECK(result.IsEmpty());
CHECK(v8::V8::IsExecutionTerminating(args.GetIsolate()));
}
void DoLoop(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch;
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Script::Compile(v8::String::NewFromUtf8(args.GetIsolate(),
"function f() {"
" var term = true;"
" try {"
" while(true) {"
" if (term) terminate();"
" term = false;"
" }"
" fail();"
" } catch(e) {"
" fail();"
" }"
"}"
"f()"))->Run();
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::V8::IsExecutionTerminating(args.GetIsolate()));
}
void DoLoopNoCall(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch;
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Script::Compile(v8::String::NewFromUtf8(args.GetIsolate(),
"var term = true;"
"while(true) {"
" if (term) terminate();"
" term = false;"
"}"))->Run();
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::V8::IsExecutionTerminating(args.GetIsolate()));
}
v8::Handle<v8::ObjectTemplate> CreateGlobalTemplate(
v8::Isolate* isolate,
v8::FunctionCallback terminate,
v8::FunctionCallback doloop) {
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(v8::String::NewFromUtf8(isolate, "terminate"),
v8::FunctionTemplate::New(isolate, terminate));
global->Set(v8::String::NewFromUtf8(isolate, "fail"),
v8::FunctionTemplate::New(isolate, Fail));
global->Set(v8::String::NewFromUtf8(isolate, "loop"),
v8::FunctionTemplate::New(isolate, Loop));
global->Set(v8::String::NewFromUtf8(isolate, "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::Handle<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), TerminateCurrentThread, DoLoop);
v8::Handle<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
// Run a loop that will be infinite if thread termination does not work.
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
CcTest::isolate(), "try { loop(); fail(); } catch(e) { fail(); }");
v8::Script::Compile(source)->Run();
// Test that we can run the code again after thread termination.
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
v8::Script::Compile(source)->Run();
}
// 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::Handle<v8::ObjectTemplate> global = CreateGlobalTemplate(
CcTest::isolate(), TerminateCurrentThread, DoLoopNoCall);
v8::Handle<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
// Run a loop that will be infinite if thread termination does not work.
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
CcTest::isolate(), "try { loop(); fail(); } catch(e) { fail(); }");
v8::Script::Compile(source)->Run();
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
// Test that we can run the code again after thread termination.
v8::Script::Compile(source)->Run();
}
class TerminatorThread : public v8::internal::Thread {
public:
explicit TerminatorThread(i::Isolate* isolate)
: Thread("TerminatorThread"),
isolate_(reinterpret_cast<v8::Isolate*>(isolate)) { }
void Run() {
semaphore->Wait();
CHECK(!v8::V8::IsExecutionTerminating(isolate_));
v8::V8::TerminateExecution(isolate_);
}
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::internal::Semaphore(0);
TerminatorThread thread(CcTest::i_isolate());
thread.Start();
v8::HandleScope scope(CcTest::isolate());
v8::Handle<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), Signal, DoLoop);
v8::Handle<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
// Run a loop that will be infinite if thread termination does not work.
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
CcTest::isolate(), "try { loop(); fail(); } catch(e) { fail(); }");
v8::Script::Compile(source)->Run();
thread.Join();
delete semaphore;
semaphore = NULL;
}
int call_count = 0;
void TerminateOrReturnObject(const v8::FunctionCallbackInfo<v8::Value>& args) {
if (++call_count == 10) {
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::V8::TerminateExecution(args.GetIsolate());
return;
}
v8::Local<v8::Object> result = v8::Object::New(args.GetIsolate());
result->Set(v8::String::NewFromUtf8(args.GetIsolate(), "x"),
v8::Integer::New(args.GetIsolate(), 42));
args.GetReturnValue().Set(result);
}
void LoopGetProperty(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch;
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Script::Compile(
v8::String::NewFromUtf8(args.GetIsolate(),
"function f() {"
" try {"
" while(true) {"
" terminate_or_return_object().x;"
" }"
" fail();"
" } catch(e) {"
" fail();"
" }"
"}"
"f()"))->Run();
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::V8::IsExecutionTerminating(args.GetIsolate()));
}
// 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::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
global->Set(
v8::String::NewFromUtf8(isolate, "terminate_or_return_object"),
v8::FunctionTemplate::New(isolate, TerminateOrReturnObject));
global->Set(v8::String::NewFromUtf8(isolate, "fail"),
v8::FunctionTemplate::New(isolate, Fail));
global->Set(v8::String::NewFromUtf8(isolate, "loop"),
v8::FunctionTemplate::New(isolate, LoopGetProperty));
v8::Handle<v8::Context> context =
v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating(isolate));
// Run a loop that will be infinite if thread termination does not work.
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
isolate, "try { loop(); fail(); } catch(e) { fail(); }");
call_count = 0;
v8::Script::Compile(source)->Run();
// Test that we can run the code again after thread termination.
CHECK(!v8::V8::IsExecutionTerminating(isolate));
call_count = 0;
v8::Script::Compile(source)->Run();
}
void ReenterAfterTermination(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch;
CHECK(!v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Script::Compile(v8::String::NewFromUtf8(args.GetIsolate(),
"function f() {"
" var term = true;"
" try {"
" while(true) {"
" if (term) terminate();"
" term = false;"
" }"
" fail();"
" } catch(e) {"
" fail();"
" }"
"}"
"f()"))->Run();
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::V8::IsExecutionTerminating(args.GetIsolate()));
v8::Script::Compile(v8::String::NewFromUtf8(args.GetIsolate(),
"function f() { fail(); } f()"))
->Run();
}
// 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::Handle<v8::ObjectTemplate> global = CreateGlobalTemplate(
isolate, TerminateCurrentThread, ReenterAfterTermination);
v8::Handle<v8::Context> context =
v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating());
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
isolate, "try { loop(); fail(); } catch(e) { fail(); }");
v8::Script::Compile(source)->Run();
CHECK(!v8::V8::IsExecutionTerminating(isolate));
// Check we can run JS again after termination.
CHECK(v8::Script::Compile(
v8::String::NewFromUtf8(isolate,
"function f() { return true; }"
"f()"))
->Run()
->IsTrue());
}
void DoLoopCancelTerminate(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch;
CHECK(!v8::V8::IsExecutionTerminating());
v8::Script::Compile(v8::String::NewFromUtf8(args.GetIsolate(),
"var term = true;"
"while(true) {"
" if (term) terminate();"
" term = false;"
"}"
"fail();"))->Run();
CHECK(try_catch.HasCaught());
CHECK(try_catch.Exception()->IsNull());
CHECK(try_catch.Message().IsEmpty());
CHECK(!try_catch.CanContinue());
CHECK(v8::V8::IsExecutionTerminating());
CHECK(try_catch.HasTerminated());
v8::V8::CancelTerminateExecution(CcTest::isolate());
CHECK(!v8::V8::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::Handle<v8::ObjectTemplate> global = CreateGlobalTemplate(
isolate, TerminateCurrentThread, DoLoopCancelTerminate);
v8::Handle<v8::Context> context = v8::Context::New(isolate, NULL, global);
v8::Context::Scope context_scope(context);
CHECK(!v8::V8::IsExecutionTerminating(CcTest::isolate()));
v8::Handle<v8::String> source = v8::String::NewFromUtf8(
isolate, "try { doloop(); } catch(e) { fail(); } 'completed';");
// Check that execution completed with correct return value.
CHECK(v8::Script::Compile(source)->Run()->Equals(v8_str("completed")));
}
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, MicrotaskShouldNotRun));
CompileRun("terminate(); while (true) { }");
CHECK(v8::V8::IsExecutionTerminating());
}
TEST(TerminateFromOtherThreadWhileMicrotaskRunning) {
semaphore = new v8::internal::Semaphore(0);
TerminatorThread thread(CcTest::i_isolate());
thread.Start();
v8::Isolate* isolate = CcTest::isolate();
isolate->SetAutorunMicrotasks(false);
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> global =
CreateGlobalTemplate(CcTest::isolate(), Signal, DoLoop);
v8::Handle<v8::Context> context =
v8::Context::New(CcTest::isolate(), NULL, global);
v8::Context::Scope context_scope(context);
isolate->EnqueueMicrotask(v8::Function::New(isolate, MicrotaskLoopForever));
// The second task should never be run because we bail out if we're
// terminating.
isolate->EnqueueMicrotask(v8::Function::New(isolate, MicrotaskShouldNotRun));
isolate->RunMicrotasks();
v8::V8::CancelTerminateExecution(isolate);
isolate->RunMicrotasks(); // should not run MicrotaskShouldNotRun
thread.Join();
delete semaphore;
semaphore = NULL;
}