v8/test/cctest/test-lockers.cc

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// Copyright 2007-2011 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 <limits.h>
#include "v8.h"
#include "api.h"
#include "isolate.h"
#include "compilation-cache.h"
#include "execution.h"
#include "snapshot.h"
#include "platform.h"
#include "utils.h"
#include "cctest.h"
#include "parser.h"
#include "unicode-inl.h"
using ::v8::AccessorInfo;
using ::v8::Context;
using ::v8::Extension;
using ::v8::Function;
using ::v8::HandleScope;
using ::v8::Local;
using ::v8::Object;
using ::v8::ObjectTemplate;
using ::v8::Persistent;
using ::v8::Script;
using ::v8::String;
using ::v8::Value;
using ::v8::V8;
namespace i = ::i;
// Migrating an isolate
class KangarooThread : public v8::internal::Thread {
public:
KangarooThread(v8::Isolate* isolate,
v8::Handle<v8::Context> context, int value)
: Thread("KangarooThread"),
isolate_(isolate), context_(context), value_(value) {
}
void Run() {
{
v8::Locker locker(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
CHECK_EQ(isolate_, v8::internal::Isolate::Current());
v8::HandleScope scope;
v8::Context::Scope context_scope(context_);
Local<Value> v = CompileRun("getValue()");
CHECK(v->IsNumber());
CHECK_EQ(30, static_cast<int>(v->NumberValue()));
}
{
v8::Locker locker(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::Context::Scope context_scope(context_);
v8::HandleScope scope;
Local<Value> v = CompileRun("getValue()");
CHECK(v->IsNumber());
CHECK_EQ(30, static_cast<int>(v->NumberValue()));
}
isolate_->Dispose();
}
private:
v8::Isolate* isolate_;
Persistent<v8::Context> context_;
int value_;
};
// Migrates an isolate from one thread to another
TEST(KangarooIsolates) {
v8::Isolate* isolate = v8::Isolate::New();
Persistent<v8::Context> context;
{
v8::Locker locker(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope;
context = v8::Context::New();
v8::Context::Scope context_scope(context);
CHECK_EQ(isolate, v8::internal::Isolate::Current());
CompileRun("function getValue() { return 30; }");
}
KangarooThread thread1(isolate, context, 1);
thread1.Start();
thread1.Join();
}
static void CalcFibAndCheck() {
Local<Value> v = CompileRun("function fib(n) {"
" if (n <= 2) return 1;"
" return fib(n-1) + fib(n-2);"
"}"
"fib(10)");
CHECK(v->IsNumber());
CHECK_EQ(55, static_cast<int>(v->NumberValue()));
}
class JoinableThread {
public:
explicit JoinableThread(const char* name)
: name_(name),
semaphore_(i::OS::CreateSemaphore(0)),
thread_(this) {
}
virtual ~JoinableThread() {
delete semaphore_;
}
void Start() {
thread_.Start();
}
void Join() {
semaphore_->Wait();
}
virtual void Run() = 0;
private:
class ThreadWithSemaphore : public i::Thread {
public:
explicit ThreadWithSemaphore(JoinableThread* joinable_thread)
: Thread(joinable_thread->name_),
joinable_thread_(joinable_thread) {
}
virtual void Run() {
joinable_thread_->Run();
joinable_thread_->semaphore_->Signal();
}
private:
JoinableThread* joinable_thread_;
};
const char* name_;
i::Semaphore* semaphore_;
ThreadWithSemaphore thread_;
friend class ThreadWithSemaphore;
DISALLOW_COPY_AND_ASSIGN(JoinableThread);
};
class IsolateLockingThreadWithLocalContext : public JoinableThread {
public:
explicit IsolateLockingThreadWithLocalContext(v8::Isolate* isolate)
: JoinableThread("IsolateLockingThread"),
isolate_(isolate) {
}
virtual void Run() {
v8::Locker locker(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
LocalContext local_context;
CHECK_EQ(isolate_, v8::internal::Isolate::Current());
CalcFibAndCheck();
}
private:
v8::Isolate* isolate_;
};
static void StartJoinAndDeleteThreads(const i::List<JoinableThread*>& threads) {
for (int i = 0; i < threads.length(); i++) {
threads[i]->Start();
}
for (int i = 0; i < threads.length(); i++) {
threads[i]->Join();
}
for (int i = 0; i < threads.length(); i++) {
delete threads[i];
}
}
// Run many threads all locking on the same isolate
TEST(IsolateLockingStress) {
const int kNThreads = 100;
i::List<JoinableThread*> threads(kNThreads);
v8::Isolate* isolate = v8::Isolate::New();
for (int i = 0; i < kNThreads; i++) {
threads.Add(new IsolateLockingThreadWithLocalContext(isolate));
}
StartJoinAndDeleteThreads(threads);
isolate->Dispose();
}
class IsolateNonlockingThread : public JoinableThread {
public:
explicit IsolateNonlockingThread()
: JoinableThread("IsolateNonlockingThread") {
}
virtual void Run() {
v8::Isolate* isolate = v8::Isolate::New();
{
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope;
v8::Handle<v8::Context> context = v8::Context::New();
v8::Context::Scope context_scope(context);
CHECK_EQ(isolate, v8::internal::Isolate::Current());
CalcFibAndCheck();
}
isolate->Dispose();
}
private:
};
// Run many threads each accessing its own isolate without locking
TEST(MultithreadedParallelIsolates) {
#ifdef V8_TARGET_ARCH_ARM
const int kNThreads = 10;
#else
const int kNThreads = 50;
#endif
i::List<JoinableThread*> threads(kNThreads);
for (int i = 0; i < kNThreads; i++) {
threads.Add(new IsolateNonlockingThread());
}
StartJoinAndDeleteThreads(threads);
}
class IsolateNestedLockingThread : public JoinableThread {
public:
explicit IsolateNestedLockingThread(v8::Isolate* isolate)
: JoinableThread("IsolateNestedLocking"), isolate_(isolate) {
}
virtual void Run() {
v8::Locker lock(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
LocalContext local_context;
{
v8::Locker another_lock(isolate_);
CalcFibAndCheck();
}
{
v8::Locker another_lock(isolate_);
CalcFibAndCheck();
}
}
private:
v8::Isolate* isolate_;
};
// Run many threads with nested locks
TEST(IsolateNestedLocking) {
const int kNThreads = 100;
v8::Isolate* isolate = v8::Isolate::New();
i::List<JoinableThread*> threads(kNThreads);
for (int i = 0; i < kNThreads; i++) {
threads.Add(new IsolateNestedLockingThread(isolate));
}
StartJoinAndDeleteThreads(threads);
}
class SeparateIsolatesLocksNonexclusiveThread : public JoinableThread {
public:
SeparateIsolatesLocksNonexclusiveThread(v8::Isolate* isolate1,
v8::Isolate* isolate2)
: JoinableThread("SeparateIsolatesLocksNonexclusiveThread"),
isolate1_(isolate1), isolate2_(isolate2) {
}
virtual void Run() {
v8::Locker lock(isolate1_);
v8::Isolate::Scope isolate_scope(isolate1_);
v8::HandleScope handle_scope;
LocalContext local_context;
IsolateLockingThreadWithLocalContext threadB(isolate2_);
threadB.Start();
CalcFibAndCheck();
threadB.Join();
}
private:
v8::Isolate* isolate1_;
v8::Isolate* isolate2_;
};
// Run parallel threads that lock and access different isolates in parallel
TEST(SeparateIsolatesLocksNonexclusive) {
const int kNThreads = 100;
v8::Isolate* isolate1 = v8::Isolate::New();
v8::Isolate* isolate2 = v8::Isolate::New();
i::List<JoinableThread*> threads(kNThreads);
for (int i = 0; i < kNThreads; i++) {
threads.Add(new SeparateIsolatesLocksNonexclusiveThread(isolate1,
isolate2));
}
StartJoinAndDeleteThreads(threads);
isolate2->Dispose();
isolate1->Dispose();
}
class LockIsolateAndCalculateFibSharedContextThread : public JoinableThread {
public:
explicit LockIsolateAndCalculateFibSharedContextThread(
v8::Isolate* isolate, v8::Handle<v8::Context> context)
: JoinableThread("LockIsolateAndCalculateFibThread"),
isolate_(isolate),
context_(context) {
}
virtual void Run() {
v8::Locker lock(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
HandleScope handle_scope;
v8::Context::Scope context_scope(context_);
CalcFibAndCheck();
}
private:
v8::Isolate* isolate_;
Persistent<v8::Context> context_;
};
class LockerUnlockerThread : public JoinableThread {
public:
explicit LockerUnlockerThread(v8::Isolate* isolate)
: JoinableThread("LockerUnlockerThread"),
isolate_(isolate) {
}
virtual void Run() {
v8::Locker lock(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
v8::Handle<v8::Context> context = v8::Context::New();
{
v8::Context::Scope context_scope(context);
CalcFibAndCheck();
}
{
isolate_->Exit();
v8::Unlocker unlocker(isolate_);
LockIsolateAndCalculateFibSharedContextThread thread(isolate_, context);
thread.Start();
thread.Join();
}
isolate_->Enter();
{
v8::Context::Scope context_scope(context);
CalcFibAndCheck();
}
}
private:
v8::Isolate* isolate_;
};
// Use unlocker inside of a Locker, multiple threads.
TEST(LockerUnlocker) {
const int kNThreads = 100;
i::List<JoinableThread*> threads(kNThreads);
v8::Isolate* isolate = v8::Isolate::New();
for (int i = 0; i < kNThreads; i++) {
threads.Add(new LockerUnlockerThread(isolate));
}
StartJoinAndDeleteThreads(threads);
isolate->Dispose();
}
class LockTwiceAndUnlockThread : public JoinableThread {
public:
explicit LockTwiceAndUnlockThread(v8::Isolate* isolate)
: JoinableThread("LockTwiceAndUnlockThread"),
isolate_(isolate) {
}
virtual void Run() {
v8::Locker lock(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
v8::Handle<v8::Context> context = v8::Context::New();
{
v8::Context::Scope context_scope(context);
CalcFibAndCheck();
}
{
v8::Locker second_lock(isolate_);
{
isolate_->Exit();
v8::Unlocker unlocker(isolate_);
LockIsolateAndCalculateFibSharedContextThread thread(isolate_, context);
thread.Start();
thread.Join();
}
}
isolate_->Enter();
{
v8::Context::Scope context_scope(context);
CalcFibAndCheck();
}
}
private:
v8::Isolate* isolate_;
};
// Use Unlocker inside two Lockers.
TEST(LockTwiceAndUnlock) {
const int kNThreads = 100;
i::List<JoinableThread*> threads(kNThreads);
v8::Isolate* isolate = v8::Isolate::New();
for (int i = 0; i < kNThreads; i++) {
threads.Add(new LockTwiceAndUnlockThread(isolate));
}
StartJoinAndDeleteThreads(threads);
isolate->Dispose();
}
class LockAndUnlockDifferentIsolatesThread : public JoinableThread {
public:
LockAndUnlockDifferentIsolatesThread(v8::Isolate* isolate1,
v8::Isolate* isolate2)
: JoinableThread("LockAndUnlockDifferentIsolatesThread"),
isolate1_(isolate1),
isolate2_(isolate2) {
}
virtual void Run() {
Persistent<v8::Context> context1;
Persistent<v8::Context> context2;
v8::Locker lock1(isolate1_);
CHECK(v8::Locker::IsLocked(isolate1_));
CHECK(!v8::Locker::IsLocked(isolate2_));
{
v8::Isolate::Scope isolate_scope(isolate1_);
v8::HandleScope handle_scope;
context1 = v8::Context::New();
{
v8::Context::Scope context_scope(context1);
CalcFibAndCheck();
}
}
v8::Locker lock2(isolate2_);
CHECK(v8::Locker::IsLocked(isolate1_));
CHECK(v8::Locker::IsLocked(isolate2_));
{
v8::Isolate::Scope isolate_scope(isolate2_);
v8::HandleScope handle_scope;
context2 = v8::Context::New();
{
v8::Context::Scope context_scope(context2);
CalcFibAndCheck();
}
}
{
v8::Unlocker unlock1(isolate1_);
CHECK(!v8::Locker::IsLocked(isolate1_));
CHECK(v8::Locker::IsLocked(isolate2_));
v8::Isolate::Scope isolate_scope(isolate2_);
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(context2);
LockIsolateAndCalculateFibSharedContextThread thread(isolate1_, context1);
thread.Start();
CalcFibAndCheck();
thread.Join();
}
}
private:
v8::Isolate* isolate1_;
v8::Isolate* isolate2_;
};
// Lock two isolates and unlock one of them.
TEST(LockAndUnlockDifferentIsolates) {
v8::Isolate* isolate1 = v8::Isolate::New();
v8::Isolate* isolate2 = v8::Isolate::New();
LockAndUnlockDifferentIsolatesThread thread(isolate1, isolate2);
thread.Start();
thread.Join();
isolate2->Dispose();
isolate1->Dispose();
}
class LockUnlockLockThread : public JoinableThread {
public:
LockUnlockLockThread(v8::Isolate* isolate, v8::Handle<v8::Context> context)
: JoinableThread("LockUnlockLockThread"),
isolate_(isolate),
context_(context) {
}
virtual void Run() {
v8::Locker lock1(isolate_);
CHECK(v8::Locker::IsLocked(isolate_));
CHECK(!v8::Locker::IsLocked());
{
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(context_);
CalcFibAndCheck();
}
{
v8::Unlocker unlock1(isolate_);
CHECK(!v8::Locker::IsLocked(isolate_));
CHECK(!v8::Locker::IsLocked());
{
v8::Locker lock2(isolate_);
v8::Isolate::Scope isolate_scope(isolate_);
v8::HandleScope handle_scope;
CHECK(v8::Locker::IsLocked(isolate_));
CHECK(!v8::Locker::IsLocked());
v8::Context::Scope context_scope(context_);
CalcFibAndCheck();
}
}
}
private:
v8::Isolate* isolate_;
v8::Persistent<v8::Context> context_;
};
// Locker inside an Unlocker inside a Locker.
TEST(LockUnlockLockMultithreaded) {
const int kNThreads = 100;
v8::Isolate* isolate = v8::Isolate::New();
Persistent<v8::Context> context;
{
v8::Locker locker_(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope;
context = v8::Context::New();
}
i::List<JoinableThread*> threads(kNThreads);
for (int i = 0; i < kNThreads; i++) {
threads.Add(new LockUnlockLockThread(isolate, context));
}
StartJoinAndDeleteThreads(threads);
}
class LockUnlockLockDefaultIsolateThread : public JoinableThread {
public:
explicit LockUnlockLockDefaultIsolateThread(v8::Handle<v8::Context> context)
: JoinableThread("LockUnlockLockDefaultIsolateThread"),
context_(context) {
}
virtual void Run() {
v8::Locker lock1;
{
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(context_);
CalcFibAndCheck();
}
{
v8::Unlocker unlock1;
{
v8::Locker lock2;
v8::HandleScope handle_scope;
v8::Context::Scope context_scope(context_);
CalcFibAndCheck();
}
}
}
private:
v8::Persistent<v8::Context> context_;
};
// Locker inside an Unlocker inside a Locker for default isolate.
TEST(LockUnlockLockDefaultIsolateMultithreaded) {
const int kNThreads = 100;
Persistent<v8::Context> context;
{
v8::Locker locker_;
v8::HandleScope handle_scope;
context = v8::Context::New();
}
i::List<JoinableThread*> threads(kNThreads);
for (int i = 0; i < kNThreads; i++) {
threads.Add(new LockUnlockLockDefaultIsolateThread(context));
}
StartJoinAndDeleteThreads(threads);
}
TEST(Regress1433) {
for (int i = 0; i < 10; i++) {
v8::Isolate* isolate = v8::Isolate::New();
{
v8::Locker lock(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope;
v8::Persistent<Context> context = v8::Context::New();
v8::Context::Scope context_scope(context);
v8::Handle<String> source = v8::String::New("1+1");
v8::Handle<Script> script = v8::Script::Compile(source);
v8::Handle<Value> result = script->Run();
v8::String::AsciiValue ascii(result);
context.Dispose();
}
isolate->Dispose();
}
}