JezK
Edit File: test-threads.cc
// 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 "v8.h" #include "platform.h" #include "isolate.h" #include "cctest.h" TEST(Preemption) { v8::Locker locker; v8::V8::Initialize(); v8::HandleScope scope; v8::Context::Scope context_scope(v8::Context::New()); v8::Locker::StartPreemption(100); v8::Handle<v8::Script> script = v8::Script::Compile( v8::String::New("var count = 0; var obj = new Object(); count++;\n")); script->Run(); v8::Locker::StopPreemption(); v8::internal::OS::Sleep(500); // Make sure the timer fires. script->Run(); } enum Turn { FILL_CACHE, CLEAN_CACHE, SECOND_TIME_FILL_CACHE, DONE }; static Turn turn = FILL_CACHE; class ThreadA : public v8::internal::Thread { public: ThreadA() : Thread("ThreadA") { } void Run() { v8::Locker locker; v8::HandleScope scope; v8::Context::Scope context_scope(v8::Context::New()); CHECK_EQ(FILL_CACHE, turn); // Fill String.search cache. v8::Handle<v8::Script> script = v8::Script::Compile( v8::String::New( "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; Thread::YieldCPU(); } } while (turn != SECOND_TIME_FILL_CACHE); // Rerun the script. CHECK(script->Run()->IsTrue()); turn = DONE; } }; class ThreadB : public v8::internal::Thread { public: ThreadB() : Thread("ThreadB") { } void Run() { do { { v8::Locker locker; if (turn == CLEAN_CACHE) { v8::HandleScope scope; v8::Context::Scope context_scope(v8::Context::New()); // Clear the caches by forcing major GC. HEAP->CollectAllGarbage(v8::internal::Heap::kNoGCFlags); turn = SECOND_TIME_FILL_CACHE; break; } } Thread::YieldCPU(); } while (true); } }; TEST(JSFunctionResultCachesInTwoThreads) { v8::V8::Initialize(); ThreadA threadA; ThreadB threadB; threadA.Start(); threadB.Start(); threadA.Join(); threadB.Join(); CHECK_EQ(DONE, turn); } class ThreadIdValidationThread : public v8::internal::Thread { public: ThreadIdValidationThread(i::Thread* thread_to_start, i::List<i::ThreadId>* refs, unsigned int thread_no, i::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_; i::Thread* thread_to_start_; i::Semaphore* semaphore_; }; TEST(ThreadIdValidation) { const int kNThreads = 100; i::List<ThreadIdValidationThread*> threads(kNThreads); i::List<i::ThreadId> refs(kNThreads); i::Semaphore* semaphore = i::OS::CreateSemaphore(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::internal::Thread { public: ThreadC() : Thread("ThreadC") { } void Run() { Join(); } }; TEST(ThreadJoinSelf) { ThreadC thread; thread.Start(); thread.Join(); }