v8/test/cctest/test-threads.cc

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// Copyright 2008 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"
#include "src/isolate.h"
enum Turn {
FILL_CACHE,
CLEAN_CACHE,
SECOND_TIME_FILL_CACHE,
DONE
};
static Turn turn = FILL_CACHE;
class ThreadA : public v8::base::Thread {
public:
ThreadA() : Thread("ThreadA") { }
void Run() {
v8::Isolate* isolate = CcTest::isolate();
v8::Locker locker(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope scope(isolate);
v8::Handle<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
CHECK_EQ(FILL_CACHE, turn);
// Fill String.search cache.
v8::Handle<v8::Script> script = v8::Script::Compile(
v8::String::NewFromUtf8(
isolate,
"for (var i = 0; i < 3; i++) {"
" var result = \"a\".search(\"a\");"
" if (result != 0) throw \"result: \" + result + \" @\" + i;"
"};"
"true"));
CHECK(script->Run()->IsTrue());
turn = CLEAN_CACHE;
do {
{
v8::Unlocker unlocker(CcTest::isolate());
Thread::YieldCPU();
}
} while (turn != SECOND_TIME_FILL_CACHE);
// Rerun the script.
CHECK(script->Run()->IsTrue());
turn = DONE;
}
};
class ThreadB : public v8::base::Thread {
public:
ThreadB() : Thread("ThreadB") { }
void Run() {
do {
{
v8::Isolate* isolate = CcTest::isolate();
v8::Locker locker(isolate);
v8::Isolate::Scope isolate_scope(isolate);
if (turn == CLEAN_CACHE) {
v8::HandleScope scope(isolate);
v8::Handle<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
// Clear the caches by forcing major GC.
CcTest::heap()->CollectAllGarbage(v8::internal::Heap::kNoGCFlags);
turn = SECOND_TIME_FILL_CACHE;
break;
}
}
Thread::YieldCPU();
} while (true);
}
};
TEST(JSFunctionResultCachesInTwoThreads) {
ThreadA threadA;
ThreadB threadB;
threadA.Start();
threadB.Start();
threadA.Join();
threadB.Join();
CHECK_EQ(DONE, turn);
}
class ThreadIdValidationThread : public v8::base::Thread {
public:
ThreadIdValidationThread(v8::base::Thread* thread_to_start,
i::List<i::ThreadId>* refs,
unsigned int thread_no,
v8::base::Semaphore* semaphore)
: Thread("ThreadRefValidationThread"),
refs_(refs), thread_no_(thread_no), thread_to_start_(thread_to_start),
semaphore_(semaphore) {
}
void Run() {
i::ThreadId thread_id = i::ThreadId::Current();
for (int i = 0; i < thread_no_; i++) {
CHECK(!(*refs_)[i].Equals(thread_id));
}
CHECK(thread_id.IsValid());
(*refs_)[thread_no_] = thread_id;
if (thread_to_start_ != NULL) {
thread_to_start_->Start();
}
semaphore_->Signal();
}
private:
i::List<i::ThreadId>* refs_;
int thread_no_;
v8::base::Thread* thread_to_start_;
v8::base::Semaphore* semaphore_;
};
TEST(ThreadIdValidation) {
const int kNThreads = 100;
i::List<ThreadIdValidationThread*> threads(kNThreads);
i::List<i::ThreadId> refs(kNThreads);
v8::base::Semaphore semaphore(0);
ThreadIdValidationThread* prev = NULL;
for (int i = kNThreads - 1; i >= 0; i--) {
ThreadIdValidationThread* newThread =
new ThreadIdValidationThread(prev, &refs, i, &semaphore);
threads.Add(newThread);
prev = newThread;
refs.Add(i::ThreadId::Invalid());
}
prev->Start();
for (int i = 0; i < kNThreads; i++) {
semaphore.Wait();
}
for (int i = 0; i < kNThreads; i++) {
delete threads[i];
}
}
class ThreadC : public v8::base::Thread {
public:
ThreadC() : Thread("ThreadC") { }
void Run() {
Join();
}
};
TEST(ThreadJoinSelf) {
ThreadC thread;
thread.Start();
thread.Join();
}